package org.hl7.fhir.dstu3.model;



/*
  Copyright (c) 2011+, HL7, Inc.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
     list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright notice, 
     this list of conditions and the following disclaimer in the documentation 
     and/or other materials provided with the distribution.
   * Neither the name of HL7 nor the names of its contributors may be used to 
     endorse or promote products derived from this software without specific 
     prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
  POSSIBILITY OF SUCH DAMAGE.
  
*/

// Generated on Fri, Mar 16, 2018 15:21+1100 for FHIR v3.0.x
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.hl7.fhir.dstu3.model.Enumerations.PublicationStatus;
import org.hl7.fhir.dstu3.model.Enumerations.PublicationStatusEnumFactory;
import org.hl7.fhir.dstu3.model.Enumerations.SearchParamType;
import org.hl7.fhir.dstu3.model.Enumerations.SearchParamTypeEnumFactory;
import org.hl7.fhir.exceptions.FHIRException;
import org.hl7.fhir.instance.model.api.IBaseBackboneElement;
import org.hl7.fhir.utilities.Utilities;

import ca.uhn.fhir.model.api.annotation.Block;
import ca.uhn.fhir.model.api.annotation.Child;
import ca.uhn.fhir.model.api.annotation.ChildOrder;
import ca.uhn.fhir.model.api.annotation.Description;
import ca.uhn.fhir.model.api.annotation.ResourceDef;
import ca.uhn.fhir.model.api.annotation.SearchParamDefinition;
/**
 * A search parameter that defines a named search item that can be used to search/filter on a resource.
 */
@ResourceDef(name="SearchParameter", profile="http://hl7.org/fhir/Profile/SearchParameter")
@ChildOrder(names={"url", "version", "name", "status", "experimental", "date", "publisher", "contact", "useContext", "jurisdiction", "purpose", "code", "base", "type", "derivedFrom", "description", "expression", "xpath", "xpathUsage", "target", "comparator", "modifier", "chain", "component"})
public class SearchParameter extends MetadataResource {

    public enum XPathUsageType {
        /**
         * The search parameter is derived directly from the selected nodes based on the type definitions.
         */
        NORMAL, 
        /**
         * The search parameter is derived by a phonetic transform from the selected nodes.
         */
        PHONETIC, 
        /**
         * The search parameter is based on a spatial transform of the selected nodes.
         */
        NEARBY, 
        /**
         * The search parameter is based on a spatial transform of the selected nodes, using physical distance from the middle.
         */
        DISTANCE, 
        /**
         * The interpretation of the xpath statement is unknown (and can't be automated).
         */
        OTHER, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static XPathUsageType fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("normal".equals(codeString))
          return NORMAL;
        if ("phonetic".equals(codeString))
          return PHONETIC;
        if ("nearby".equals(codeString))
          return NEARBY;
        if ("distance".equals(codeString))
          return DISTANCE;
        if ("other".equals(codeString))
          return OTHER;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown XPathUsageType code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case NORMAL: return "normal";
            case PHONETIC: return "phonetic";
            case NEARBY: return "nearby";
            case DISTANCE: return "distance";
            case OTHER: return "other";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case NORMAL: return "http://hl7.org/fhir/search-xpath-usage";
            case PHONETIC: return "http://hl7.org/fhir/search-xpath-usage";
            case NEARBY: return "http://hl7.org/fhir/search-xpath-usage";
            case DISTANCE: return "http://hl7.org/fhir/search-xpath-usage";
            case OTHER: return "http://hl7.org/fhir/search-xpath-usage";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case NORMAL: return "The search parameter is derived directly from the selected nodes based on the type definitions.";
            case PHONETIC: return "The search parameter is derived by a phonetic transform from the selected nodes.";
            case NEARBY: return "The search parameter is based on a spatial transform of the selected nodes.";
            case DISTANCE: return "The search parameter is based on a spatial transform of the selected nodes, using physical distance from the middle.";
            case OTHER: return "The interpretation of the xpath statement is unknown (and can't be automated).";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case NORMAL: return "Normal";
            case PHONETIC: return "Phonetic";
            case NEARBY: return "Nearby";
            case DISTANCE: return "Distance";
            case OTHER: return "Other";
            case NULL: return null;
            default: return "?";
          }
        }
    }

  public static class XPathUsageTypeEnumFactory implements EnumFactory<XPathUsageType> {
    public XPathUsageType fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("normal".equals(codeString))
          return XPathUsageType.NORMAL;
        if ("phonetic".equals(codeString))
          return XPathUsageType.PHONETIC;
        if ("nearby".equals(codeString))
          return XPathUsageType.NEARBY;
        if ("distance".equals(codeString))
          return XPathUsageType.DISTANCE;
        if ("other".equals(codeString))
          return XPathUsageType.OTHER;
        throw new IllegalArgumentException("Unknown XPathUsageType code '"+codeString+"'");
        }
        public Enumeration<XPathUsageType> fromType(PrimitiveType<?> code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<XPathUsageType>(this);
          String codeString = code.asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("normal".equals(codeString))
          return new Enumeration<XPathUsageType>(this, XPathUsageType.NORMAL);
        if ("phonetic".equals(codeString))
          return new Enumeration<XPathUsageType>(this, XPathUsageType.PHONETIC);
        if ("nearby".equals(codeString))
          return new Enumeration<XPathUsageType>(this, XPathUsageType.NEARBY);
        if ("distance".equals(codeString))
          return new Enumeration<XPathUsageType>(this, XPathUsageType.DISTANCE);
        if ("other".equals(codeString))
          return new Enumeration<XPathUsageType>(this, XPathUsageType.OTHER);
        throw new FHIRException("Unknown XPathUsageType code '"+codeString+"'");
        }
    public String toCode(XPathUsageType code) {
       if (code == XPathUsageType.NULL)
           return null;
       if (code == XPathUsageType.NORMAL)
        return "normal";
      if (code == XPathUsageType.PHONETIC)
        return "phonetic";
      if (code == XPathUsageType.NEARBY)
        return "nearby";
      if (code == XPathUsageType.DISTANCE)
        return "distance";
      if (code == XPathUsageType.OTHER)
        return "other";
      return "?";
   }
    public String toSystem(XPathUsageType code) {
      return code.getSystem();
      }
    }

    public enum SearchComparator {
        /**
         * the value for the parameter in the resource is equal to the provided value
         */
        EQ, 
        /**
         * the value for the parameter in the resource is not equal to the provided value
         */
        NE, 
        /**
         * the value for the parameter in the resource is greater than the provided value
         */
        GT, 
        /**
         * the value for the parameter in the resource is less than the provided value
         */
        LT, 
        /**
         * the value for the parameter in the resource is greater or equal to the provided value
         */
        GE, 
        /**
         * the value for the parameter in the resource is less or equal to the provided value
         */
        LE, 
        /**
         * the value for the parameter in the resource starts after the provided value
         */
        SA, 
        /**
         * the value for the parameter in the resource ends before the provided value
         */
        EB, 
        /**
         * the value for the parameter in the resource is approximately the same to the provided value.
         */
        AP, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static SearchComparator fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("eq".equals(codeString))
          return EQ;
        if ("ne".equals(codeString))
          return NE;
        if ("gt".equals(codeString))
          return GT;
        if ("lt".equals(codeString))
          return LT;
        if ("ge".equals(codeString))
          return GE;
        if ("le".equals(codeString))
          return LE;
        if ("sa".equals(codeString))
          return SA;
        if ("eb".equals(codeString))
          return EB;
        if ("ap".equals(codeString))
          return AP;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown SearchComparator code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case EQ: return "eq";
            case NE: return "ne";
            case GT: return "gt";
            case LT: return "lt";
            case GE: return "ge";
            case LE: return "le";
            case SA: return "sa";
            case EB: return "eb";
            case AP: return "ap";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case EQ: return "http://hl7.org/fhir/search-comparator";
            case NE: return "http://hl7.org/fhir/search-comparator";
            case GT: return "http://hl7.org/fhir/search-comparator";
            case LT: return "http://hl7.org/fhir/search-comparator";
            case GE: return "http://hl7.org/fhir/search-comparator";
            case LE: return "http://hl7.org/fhir/search-comparator";
            case SA: return "http://hl7.org/fhir/search-comparator";
            case EB: return "http://hl7.org/fhir/search-comparator";
            case AP: return "http://hl7.org/fhir/search-comparator";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case EQ: return "the value for the parameter in the resource is equal to the provided value";
            case NE: return "the value for the parameter in the resource is not equal to the provided value";
            case GT: return "the value for the parameter in the resource is greater than the provided value";
            case LT: return "the value for the parameter in the resource is less than the provided value";
            case GE: return "the value for the parameter in the resource is greater or equal to the provided value";
            case LE: return "the value for the parameter in the resource is less or equal to the provided value";
            case SA: return "the value for the parameter in the resource starts after the provided value";
            case EB: return "the value for the parameter in the resource ends before the provided value";
            case AP: return "the value for the parameter in the resource is approximately the same to the provided value.";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case EQ: return "Equals";
            case NE: return "Not Equals";
            case GT: return "Greater Than";
            case LT: return "Less Then";
            case GE: return "Greater or Equals";
            case LE: return "Less of Equal";
            case SA: return "Starts After";
            case EB: return "Ends Before";
            case AP: return "Approximately";
            case NULL: return null;
            default: return "?";
          }
        }
    }

  public static class SearchComparatorEnumFactory implements EnumFactory<SearchComparator> {
    public SearchComparator fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("eq".equals(codeString))
          return SearchComparator.EQ;
        if ("ne".equals(codeString))
          return SearchComparator.NE;
        if ("gt".equals(codeString))
          return SearchComparator.GT;
        if ("lt".equals(codeString))
          return SearchComparator.LT;
        if ("ge".equals(codeString))
          return SearchComparator.GE;
        if ("le".equals(codeString))
          return SearchComparator.LE;
        if ("sa".equals(codeString))
          return SearchComparator.SA;
        if ("eb".equals(codeString))
          return SearchComparator.EB;
        if ("ap".equals(codeString))
          return SearchComparator.AP;
        throw new IllegalArgumentException("Unknown SearchComparator code '"+codeString+"'");
        }
        public Enumeration<SearchComparator> fromType(PrimitiveType<?> code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<SearchComparator>(this);
          String codeString = code.asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("eq".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.EQ);
        if ("ne".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.NE);
        if ("gt".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.GT);
        if ("lt".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.LT);
        if ("ge".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.GE);
        if ("le".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.LE);
        if ("sa".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.SA);
        if ("eb".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.EB);
        if ("ap".equals(codeString))
          return new Enumeration<SearchComparator>(this, SearchComparator.AP);
        throw new FHIRException("Unknown SearchComparator code '"+codeString+"'");
        }
    public String toCode(SearchComparator code) {
       if (code == SearchComparator.NULL)
           return null;
       if (code == SearchComparator.EQ)
        return "eq";
      if (code == SearchComparator.NE)
        return "ne";
      if (code == SearchComparator.GT)
        return "gt";
      if (code == SearchComparator.LT)
        return "lt";
      if (code == SearchComparator.GE)
        return "ge";
      if (code == SearchComparator.LE)
        return "le";
      if (code == SearchComparator.SA)
        return "sa";
      if (code == SearchComparator.EB)
        return "eb";
      if (code == SearchComparator.AP)
        return "ap";
      return "?";
   }
    public String toSystem(SearchComparator code) {
      return code.getSystem();
      }
    }

    public enum SearchModifierCode {
        /**
         * The search parameter returns resources that have a value or not.
         */
        MISSING, 
        /**
         * The search parameter returns resources that have a value that exactly matches the supplied parameter (the whole string, including casing and accents).
         */
        EXACT, 
        /**
         * The search parameter returns resources that include the supplied parameter value anywhere within the field being searched.
         */
        CONTAINS, 
        /**
         * The search parameter returns resources that do not contain a match.
         */
        NOT, 
        /**
         * The search parameter is processed as a string that searches text associated with the code/value - either CodeableConcept.text, Coding.display, or Identifier.type.text.
         */
        TEXT, 
        /**
         * The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is in the specified value set.
         */
        IN, 
        /**
         * The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is not in the specified value set.
         */
        NOTIN, 
        /**
         * The search parameter tests whether the value in a resource is subsumed by the specified value (is-a, or hierarchical relationships).
         */
        BELOW, 
        /**
         * The search parameter tests whether the value in a resource subsumes the specified value (is-a, or hierarchical relationships).
         */
        ABOVE, 
        /**
         * The search parameter only applies to the Resource Type specified as a modifier (e.g. the modifier is not actually :type, but :Patient etc.).
         */
        TYPE, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static SearchModifierCode fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("missing".equals(codeString))
          return MISSING;
        if ("exact".equals(codeString))
          return EXACT;
        if ("contains".equals(codeString))
          return CONTAINS;
        if ("not".equals(codeString))
          return NOT;
        if ("text".equals(codeString))
          return TEXT;
        if ("in".equals(codeString))
          return IN;
        if ("not-in".equals(codeString))
          return NOTIN;
        if ("below".equals(codeString))
          return BELOW;
        if ("above".equals(codeString))
          return ABOVE;
        if ("type".equals(codeString))
          return TYPE;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown SearchModifierCode code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case MISSING: return "missing";
            case EXACT: return "exact";
            case CONTAINS: return "contains";
            case NOT: return "not";
            case TEXT: return "text";
            case IN: return "in";
            case NOTIN: return "not-in";
            case BELOW: return "below";
            case ABOVE: return "above";
            case TYPE: return "type";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case MISSING: return "http://hl7.org/fhir/search-modifier-code";
            case EXACT: return "http://hl7.org/fhir/search-modifier-code";
            case CONTAINS: return "http://hl7.org/fhir/search-modifier-code";
            case NOT: return "http://hl7.org/fhir/search-modifier-code";
            case TEXT: return "http://hl7.org/fhir/search-modifier-code";
            case IN: return "http://hl7.org/fhir/search-modifier-code";
            case NOTIN: return "http://hl7.org/fhir/search-modifier-code";
            case BELOW: return "http://hl7.org/fhir/search-modifier-code";
            case ABOVE: return "http://hl7.org/fhir/search-modifier-code";
            case TYPE: return "http://hl7.org/fhir/search-modifier-code";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case MISSING: return "The search parameter returns resources that have a value or not.";
            case EXACT: return "The search parameter returns resources that have a value that exactly matches the supplied parameter (the whole string, including casing and accents).";
            case CONTAINS: return "The search parameter returns resources that include the supplied parameter value anywhere within the field being searched.";
            case NOT: return "The search parameter returns resources that do not contain a match.";
            case TEXT: return "The search parameter is processed as a string that searches text associated with the code/value - either CodeableConcept.text, Coding.display, or Identifier.type.text.";
            case IN: return "The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is in the specified value set.";
            case NOTIN: return "The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is not in the specified value set.";
            case BELOW: return "The search parameter tests whether the value in a resource is subsumed by the specified value (is-a, or hierarchical relationships).";
            case ABOVE: return "The search parameter tests whether the value in a resource subsumes the specified value (is-a, or hierarchical relationships).";
            case TYPE: return "The search parameter only applies to the Resource Type specified as a modifier (e.g. the modifier is not actually :type, but :Patient etc.).";
            case NULL: return null;
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case MISSING: return "Missing";
            case EXACT: return "Exact";
            case CONTAINS: return "Contains";
            case NOT: return "Not";
            case TEXT: return "Text";
            case IN: return "In";
            case NOTIN: return "Not In";
            case BELOW: return "Below";
            case ABOVE: return "Above";
            case TYPE: return "Type";
            case NULL: return null;
            default: return "?";
          }
        }
    }

  public static class SearchModifierCodeEnumFactory implements EnumFactory<SearchModifierCode> {
    public SearchModifierCode fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("missing".equals(codeString))
          return SearchModifierCode.MISSING;
        if ("exact".equals(codeString))
          return SearchModifierCode.EXACT;
        if ("contains".equals(codeString))
          return SearchModifierCode.CONTAINS;
        if ("not".equals(codeString))
          return SearchModifierCode.NOT;
        if ("text".equals(codeString))
          return SearchModifierCode.TEXT;
        if ("in".equals(codeString))
          return SearchModifierCode.IN;
        if ("not-in".equals(codeString))
          return SearchModifierCode.NOTIN;
        if ("below".equals(codeString))
          return SearchModifierCode.BELOW;
        if ("above".equals(codeString))
          return SearchModifierCode.ABOVE;
        if ("type".equals(codeString))
          return SearchModifierCode.TYPE;
        throw new IllegalArgumentException("Unknown SearchModifierCode code '"+codeString+"'");
        }
        public Enumeration<SearchModifierCode> fromType(PrimitiveType<?> code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<SearchModifierCode>(this);
          String codeString = code.asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("missing".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.MISSING);
        if ("exact".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.EXACT);
        if ("contains".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.CONTAINS);
        if ("not".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.NOT);
        if ("text".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.TEXT);
        if ("in".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.IN);
        if ("not-in".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.NOTIN);
        if ("below".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.BELOW);
        if ("above".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.ABOVE);
        if ("type".equals(codeString))
          return new Enumeration<SearchModifierCode>(this, SearchModifierCode.TYPE);
        throw new FHIRException("Unknown SearchModifierCode code '"+codeString+"'");
        }
    public String toCode(SearchModifierCode code) {
       if (code == SearchModifierCode.NULL)
           return null;
       if (code == SearchModifierCode.MISSING)
        return "missing";
      if (code == SearchModifierCode.EXACT)
        return "exact";
      if (code == SearchModifierCode.CONTAINS)
        return "contains";
      if (code == SearchModifierCode.NOT)
        return "not";
      if (code == SearchModifierCode.TEXT)
        return "text";
      if (code == SearchModifierCode.IN)
        return "in";
      if (code == SearchModifierCode.NOTIN)
        return "not-in";
      if (code == SearchModifierCode.BELOW)
        return "below";
      if (code == SearchModifierCode.ABOVE)
        return "above";
      if (code == SearchModifierCode.TYPE)
        return "type";
      return "?";
   }
    public String toSystem(SearchModifierCode code) {
      return code.getSystem();
      }
    }

    @Block()
    public static class SearchParameterComponentComponent extends BackboneElement implements IBaseBackboneElement {
        /**
         * The definition of the search parameter that describes this part.
         */
        @Child(name = "definition", type = {SearchParameter.class}, order=1, min=1, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Defines how the part works", formalDefinition="The definition of the search parameter that describes this part." )
        protected Reference definition;

        /**
         * The actual object that is the target of the reference (The definition of the search parameter that describes this part.)
         */
        protected SearchParameter definitionTarget;

        /**
         * A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.
         */
        @Child(name = "expression", type = {StringType.class}, order=2, min=1, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Subexpression relative to main expression", formalDefinition="A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression." )
        protected StringType expression;

        private static final long serialVersionUID = -1105563614L;

    /**
     * Constructor
     */
      public SearchParameterComponentComponent() {
        super();
      }

    /**
     * Constructor
     */
      public SearchParameterComponentComponent(Reference definition, StringType expression) {
        super();
        this.definition = definition;
        this.expression = expression;
      }

        /**
         * @return {@link #definition} (The definition of the search parameter that describes this part.)
         */
        public Reference getDefinition() { 
          if (this.definition == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create SearchParameterComponentComponent.definition");
            else if (Configuration.doAutoCreate())
              this.definition = new Reference(); // cc
          return this.definition;
        }

        public boolean hasDefinition() { 
          return this.definition != null && !this.definition.isEmpty();
        }

        /**
         * @param value {@link #definition} (The definition of the search parameter that describes this part.)
         */
        public SearchParameterComponentComponent setDefinition(Reference value)  { 
          this.definition = value;
          return this;
        }

        /**
         * @return {@link #definition} The actual object that is the target of the reference. The reference library doesn't populate this, but you can use it to hold the resource if you resolve it. (The definition of the search parameter that describes this part.)
         */
        public SearchParameter getDefinitionTarget() { 
          if (this.definitionTarget == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create SearchParameterComponentComponent.definition");
            else if (Configuration.doAutoCreate())
              this.definitionTarget = new SearchParameter(); // aa
          return this.definitionTarget;
        }

        /**
         * @param value {@link #definition} The actual object that is the target of the reference. The reference library doesn't use these, but you can use it to hold the resource if you resolve it. (The definition of the search parameter that describes this part.)
         */
        public SearchParameterComponentComponent setDefinitionTarget(SearchParameter value) { 
          this.definitionTarget = value;
          return this;
        }

        /**
         * @return {@link #expression} (A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
         */
        public StringType getExpressionElement() { 
          if (this.expression == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create SearchParameterComponentComponent.expression");
            else if (Configuration.doAutoCreate())
              this.expression = new StringType(); // bb
          return this.expression;
        }

        public boolean hasExpressionElement() { 
          return this.expression != null && !this.expression.isEmpty();
        }

        public boolean hasExpression() { 
          return this.expression != null && !this.expression.isEmpty();
        }

        /**
         * @param value {@link #expression} (A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
         */
        public SearchParameterComponentComponent setExpressionElement(StringType value) { 
          this.expression = value;
          return this;
        }

        /**
         * @return A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.
         */
        public String getExpression() { 
          return this.expression == null ? null : this.expression.getValue();
        }

        /**
         * @param value A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.
         */
        public SearchParameterComponentComponent setExpression(String value) { 
            if (this.expression == null)
              this.expression = new StringType();
            this.expression.setValue(value);
          return this;
        }

        protected void listChildren(List<Property> children) {
          super.listChildren(children);
          children.add(new Property("definition", "Reference(SearchParameter)", "The definition of the search parameter that describes this part.", 0, 1, definition));
          children.add(new Property("expression", "string", "A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.", 0, 1, expression));
        }

        @Override
        public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
          switch (_hash) {
          case -1014418093: /*definition*/  return new Property("definition", "Reference(SearchParameter)", "The definition of the search parameter that describes this part.", 0, 1, definition);
          case -1795452264: /*expression*/  return new Property("expression", "string", "A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expression.", 0, 1, expression);
          default: return super.getNamedProperty(_hash, _name, _checkValid);
          }

        }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case -1014418093: /*definition*/ return this.definition == null ? new Base[0] : new Base[] {this.definition}; // Reference
        case -1795452264: /*expression*/ return this.expression == null ? new Base[0] : new Base[] {this.expression}; // StringType
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case -1014418093: // definition
          this.definition = castToReference(value); // Reference
          return value;
        case -1795452264: // expression
          this.expression = castToString(value); // StringType
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("definition")) {
          this.definition = castToReference(value); // Reference
        } else if (name.equals("expression")) {
          this.expression = castToString(value); // StringType
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1014418093:  return getDefinition(); 
        case -1795452264:  return getExpressionElement();
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1014418093: /*definition*/ return new String[] {"Reference"};
        case -1795452264: /*expression*/ return new String[] {"string"};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("definition")) {
          this.definition = new Reference();
          return this.definition;
        }
        else if (name.equals("expression")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.expression");
        }
        else
          return super.addChild(name);
      }

      public SearchParameterComponentComponent copy() {
        SearchParameterComponentComponent dst = new SearchParameterComponentComponent();
        copyValues(dst);
        dst.definition = definition == null ? null : definition.copy();
        dst.expression = expression == null ? null : expression.copy();
        return dst;
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof SearchParameterComponentComponent))
          return false;
        SearchParameterComponentComponent o = (SearchParameterComponentComponent) other_;
        return compareDeep(definition, o.definition, true) && compareDeep(expression, o.expression, true)
          ;
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof SearchParameterComponentComponent))
          return false;
        SearchParameterComponentComponent o = (SearchParameterComponentComponent) other_;
        return compareValues(expression, o.expression, true);
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(definition, expression);
      }

  public String fhirType() {
    return "SearchParameter.component";

  }

  }

    /**
     * Explaination of why this search parameter is needed and why it has been designed as it has.
     */
    @Child(name = "purpose", type = {MarkdownType.class}, order=0, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Why this search parameter is defined", formalDefinition="Explaination of why this search parameter is needed and why it has been designed as it has." )
    protected MarkdownType purpose;

    /**
     * The code used in the URL or the parameter name in a parameters resource for this search parameter.
     */
    @Child(name = "code", type = {CodeType.class}, order=1, min=1, max=1, modifier=false, summary=true)
    @Description(shortDefinition="Code used in URL", formalDefinition="The code used in the URL or the parameter name in a parameters resource for this search parameter." )
    protected CodeType code;

    /**
     * The base resource type(s) that this search parameter can be used against.
     */
    @Child(name = "base", type = {CodeType.class}, order=2, min=1, max=Child.MAX_UNLIMITED, modifier=false, summary=true)
    @Description(shortDefinition="The resource type(s) this search parameter applies to", formalDefinition="The base resource type(s) that this search parameter can be used against." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/resource-types")
    protected List<CodeType> base;

    /**
     * The type of value a search parameter refers to, and how the content is interpreted.
     */
    @Child(name = "type", type = {CodeType.class}, order=3, min=1, max=1, modifier=false, summary=true)
    @Description(shortDefinition="number | date | string | token | reference | composite | quantity | uri", formalDefinition="The type of value a search parameter refers to, and how the content is interpreted." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/search-param-type")
    protected Enumeration<SearchParamType> type;

    /**
     * Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.
     */
    @Child(name = "derivedFrom", type = {UriType.class}, order=4, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Original Definition for the search parameter", formalDefinition="Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter." )
    protected UriType derivedFrom;

    /**
     * A FHIRPath expression that returns a set of elements for the search parameter.
     */
    @Child(name = "expression", type = {StringType.class}, order=5, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="FHIRPath expression that extracts the values", formalDefinition="A FHIRPath expression that returns a set of elements for the search parameter." )
    protected StringType expression;

    /**
     * An XPath expression that returns a set of elements for the search parameter.
     */
    @Child(name = "xpath", type = {StringType.class}, order=6, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="XPath that extracts the values", formalDefinition="An XPath expression that returns a set of elements for the search parameter." )
    protected StringType xpath;

    /**
     * How the search parameter relates to the set of elements returned by evaluating the xpath query.
     */
    @Child(name = "xpathUsage", type = {CodeType.class}, order=7, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="normal | phonetic | nearby | distance | other", formalDefinition="How the search parameter relates to the set of elements returned by evaluating the xpath query." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/search-xpath-usage")
    protected Enumeration<XPathUsageType> xpathUsage;

    /**
     * Types of resource (if a resource is referenced).
     */
    @Child(name = "target", type = {CodeType.class}, order=8, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Types of resource (if a resource reference)", formalDefinition="Types of resource (if a resource is referenced)." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/resource-types")
    protected List<CodeType> target;

    /**
     * Comparators supported for the search parameter.
     */
    @Child(name = "comparator", type = {CodeType.class}, order=9, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="eq | ne | gt | lt | ge | le | sa | eb | ap", formalDefinition="Comparators supported for the search parameter." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/search-comparator")
    protected List<Enumeration<SearchComparator>> comparator;

    /**
     * A modifier supported for the search parameter.
     */
    @Child(name = "modifier", type = {CodeType.class}, order=10, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="missing | exact | contains | not | text | in | not-in | below | above | type", formalDefinition="A modifier supported for the search parameter." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/search-modifier-code")
    protected List<Enumeration<SearchModifierCode>> modifier;

    /**
     * Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.
     */
    @Child(name = "chain", type = {StringType.class}, order=11, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Chained names supported", formalDefinition="Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type." )
    protected List<StringType> chain;

    /**
     * Used to define the parts of a composite search parameter.
     */
    @Child(name = "component", type = {}, order=12, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="For Composite resources to define the parts", formalDefinition="Used to define the parts of a composite search parameter." )
    protected List<SearchParameterComponentComponent> component;

    private static final long serialVersionUID = -769368159L;

  /**
   * Constructor
   */
    public SearchParameter() {
      super();
    }

  /**
   * Constructor
   */
    public SearchParameter(UriType url, StringType name, Enumeration<PublicationStatus> status, CodeType code, Enumeration<SearchParamType> type, MarkdownType description) {
      super();
      this.url = url;
      this.name = name;
      this.status = status;
      this.code = code;
      this.type = type;
      this.description = description;
    }

    /**
     * @return {@link #url} (An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).). This is the underlying object with id, value and extensions. The accessor "getUrl" gives direct access to the value
     */
    public UriType getUrlElement() { 
      if (this.url == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.url");
        else if (Configuration.doAutoCreate())
          this.url = new UriType(); // bb
      return this.url;
    }

    public boolean hasUrlElement() { 
      return this.url != null && !this.url.isEmpty();
    }

    public boolean hasUrl() { 
      return this.url != null && !this.url.isEmpty();
    }

    /**
     * @param value {@link #url} (An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).). This is the underlying object with id, value and extensions. The accessor "getUrl" gives direct access to the value
     */
    public SearchParameter setUrlElement(UriType value) { 
      this.url = value;
      return this;
    }

    /**
     * @return An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).
     */
    public String getUrl() { 
      return this.url == null ? null : this.url.getValue();
    }

    /**
     * @param value An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).
     */
    public SearchParameter setUrl(String value) { 
        if (this.url == null)
          this.url = new UriType();
        this.url.setValue(value);
      return this;
    }

    /**
     * @return {@link #version} (The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.). This is the underlying object with id, value and extensions. The accessor "getVersion" gives direct access to the value
     */
    public StringType getVersionElement() { 
      if (this.version == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.version");
        else if (Configuration.doAutoCreate())
          this.version = new StringType(); // bb
      return this.version;
    }

    public boolean hasVersionElement() { 
      return this.version != null && !this.version.isEmpty();
    }

    public boolean hasVersion() { 
      return this.version != null && !this.version.isEmpty();
    }

    /**
     * @param value {@link #version} (The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.). This is the underlying object with id, value and extensions. The accessor "getVersion" gives direct access to the value
     */
    public SearchParameter setVersionElement(StringType value) { 
      this.version = value;
      return this;
    }

    /**
     * @return The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.
     */
    public String getVersion() { 
      return this.version == null ? null : this.version.getValue();
    }

    /**
     * @param value The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.
     */
    public SearchParameter setVersion(String value) { 
      if (Utilities.noString(value))
        this.version = null;
      else {
        if (this.version == null)
          this.version = new StringType();
        this.version.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #name} (A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
     */
    public StringType getNameElement() { 
      if (this.name == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.name");
        else if (Configuration.doAutoCreate())
          this.name = new StringType(); // bb
      return this.name;
    }

    public boolean hasNameElement() { 
      return this.name != null && !this.name.isEmpty();
    }

    public boolean hasName() { 
      return this.name != null && !this.name.isEmpty();
    }

    /**
     * @param value {@link #name} (A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
     */
    public SearchParameter setNameElement(StringType value) { 
      this.name = value;
      return this;
    }

    /**
     * @return A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.
     */
    public String getName() { 
      return this.name == null ? null : this.name.getValue();
    }

    /**
     * @param value A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.
     */
    public SearchParameter setName(String value) { 
        if (this.name == null)
          this.name = new StringType();
        this.name.setValue(value);
      return this;
    }

    /**
     * @return {@link #status} (The status of this search parameter. Enables tracking the life-cycle of the content.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public Enumeration<PublicationStatus> getStatusElement() { 
      if (this.status == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.status");
        else if (Configuration.doAutoCreate())
          this.status = new Enumeration<PublicationStatus>(new PublicationStatusEnumFactory()); // bb
      return this.status;
    }

    public boolean hasStatusElement() { 
      return this.status != null && !this.status.isEmpty();
    }

    public boolean hasStatus() { 
      return this.status != null && !this.status.isEmpty();
    }

    /**
     * @param value {@link #status} (The status of this search parameter. Enables tracking the life-cycle of the content.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public SearchParameter setStatusElement(Enumeration<PublicationStatus> value) { 
      this.status = value;
      return this;
    }

    /**
     * @return The status of this search parameter. Enables tracking the life-cycle of the content.
     */
    public PublicationStatus getStatus() { 
      return this.status == null ? null : this.status.getValue();
    }

    /**
     * @param value The status of this search parameter. Enables tracking the life-cycle of the content.
     */
    public SearchParameter setStatus(PublicationStatus value) { 
        if (this.status == null)
          this.status = new Enumeration<PublicationStatus>(new PublicationStatusEnumFactory());
        this.status.setValue(value);
      return this;
    }

    /**
     * @return {@link #experimental} (A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.). This is the underlying object with id, value and extensions. The accessor "getExperimental" gives direct access to the value
     */
    public BooleanType getExperimentalElement() { 
      if (this.experimental == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.experimental");
        else if (Configuration.doAutoCreate())
          this.experimental = new BooleanType(); // bb
      return this.experimental;
    }

    public boolean hasExperimentalElement() { 
      return this.experimental != null && !this.experimental.isEmpty();
    }

    public boolean hasExperimental() { 
      return this.experimental != null && !this.experimental.isEmpty();
    }

    /**
     * @param value {@link #experimental} (A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.). This is the underlying object with id, value and extensions. The accessor "getExperimental" gives direct access to the value
     */
    public SearchParameter setExperimentalElement(BooleanType value) { 
      this.experimental = value;
      return this;
    }

    /**
     * @return A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.
     */
    public boolean getExperimental() { 
      return this.experimental == null || this.experimental.isEmpty() ? false : this.experimental.getValue();
    }

    /**
     * @param value A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.
     */
    public SearchParameter setExperimental(boolean value) { 
        if (this.experimental == null)
          this.experimental = new BooleanType();
        this.experimental.setValue(value);
      return this;
    }

    /**
     * @return {@link #date} (The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.). This is the underlying object with id, value and extensions. The accessor "getDate" gives direct access to the value
     */
    public DateTimeType getDateElement() { 
      if (this.date == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.date");
        else if (Configuration.doAutoCreate())
          this.date = new DateTimeType(); // bb
      return this.date;
    }

    public boolean hasDateElement() { 
      return this.date != null && !this.date.isEmpty();
    }

    public boolean hasDate() { 
      return this.date != null && !this.date.isEmpty();
    }

    /**
     * @param value {@link #date} (The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.). This is the underlying object with id, value and extensions. The accessor "getDate" gives direct access to the value
     */
    public SearchParameter setDateElement(DateTimeType value) { 
      this.date = value;
      return this;
    }

    /**
     * @return The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.
     */
    public Date getDate() { 
      return this.date == null ? null : this.date.getValue();
    }

    /**
     * @param value The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.
     */
    public SearchParameter setDate(Date value) { 
      if (value == null)
        this.date = null;
      else {
        if (this.date == null)
          this.date = new DateTimeType();
        this.date.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #publisher} (The name of the individual or organization that published the search parameter.). This is the underlying object with id, value and extensions. The accessor "getPublisher" gives direct access to the value
     */
    public StringType getPublisherElement() { 
      if (this.publisher == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.publisher");
        else if (Configuration.doAutoCreate())
          this.publisher = new StringType(); // bb
      return this.publisher;
    }

    public boolean hasPublisherElement() { 
      return this.publisher != null && !this.publisher.isEmpty();
    }

    public boolean hasPublisher() { 
      return this.publisher != null && !this.publisher.isEmpty();
    }

    /**
     * @param value {@link #publisher} (The name of the individual or organization that published the search parameter.). This is the underlying object with id, value and extensions. The accessor "getPublisher" gives direct access to the value
     */
    public SearchParameter setPublisherElement(StringType value) { 
      this.publisher = value;
      return this;
    }

    /**
     * @return The name of the individual or organization that published the search parameter.
     */
    public String getPublisher() { 
      return this.publisher == null ? null : this.publisher.getValue();
    }

    /**
     * @param value The name of the individual or organization that published the search parameter.
     */
    public SearchParameter setPublisher(String value) { 
      if (Utilities.noString(value))
        this.publisher = null;
      else {
        if (this.publisher == null)
          this.publisher = new StringType();
        this.publisher.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #contact} (Contact details to assist a user in finding and communicating with the publisher.)
     */
    public List<ContactDetail> getContact() { 
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      return this.contact;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setContact(List<ContactDetail> theContact) { 
      this.contact = theContact;
      return this;
    }

    public boolean hasContact() { 
      if (this.contact == null)
        return false;
      for (ContactDetail item : this.contact)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public ContactDetail addContact() { //3
      ContactDetail t = new ContactDetail();
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      this.contact.add(t);
      return t;
    }

    public SearchParameter addContact(ContactDetail t) { //3
      if (t == null)
        return this;
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      this.contact.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #contact}, creating it if it does not already exist
     */
    public ContactDetail getContactFirstRep() { 
      if (getContact().isEmpty()) {
        addContact();
      }
      return getContact().get(0);
    }

    /**
     * @return {@link #useContext} (The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate search parameter instances.)
     */
    public List<UsageContext> getUseContext() { 
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      return this.useContext;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setUseContext(List<UsageContext> theUseContext) { 
      this.useContext = theUseContext;
      return this;
    }

    public boolean hasUseContext() { 
      if (this.useContext == null)
        return false;
      for (UsageContext item : this.useContext)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public UsageContext addUseContext() { //3
      UsageContext t = new UsageContext();
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      this.useContext.add(t);
      return t;
    }

    public SearchParameter addUseContext(UsageContext t) { //3
      if (t == null)
        return this;
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      this.useContext.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #useContext}, creating it if it does not already exist
     */
    public UsageContext getUseContextFirstRep() { 
      if (getUseContext().isEmpty()) {
        addUseContext();
      }
      return getUseContext().get(0);
    }

    /**
     * @return {@link #jurisdiction} (A legal or geographic region in which the search parameter is intended to be used.)
     */
    public List<CodeableConcept> getJurisdiction() { 
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      return this.jurisdiction;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setJurisdiction(List<CodeableConcept> theJurisdiction) { 
      this.jurisdiction = theJurisdiction;
      return this;
    }

    public boolean hasJurisdiction() { 
      if (this.jurisdiction == null)
        return false;
      for (CodeableConcept item : this.jurisdiction)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public CodeableConcept addJurisdiction() { //3
      CodeableConcept t = new CodeableConcept();
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      this.jurisdiction.add(t);
      return t;
    }

    public SearchParameter addJurisdiction(CodeableConcept t) { //3
      if (t == null)
        return this;
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      this.jurisdiction.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #jurisdiction}, creating it if it does not already exist
     */
    public CodeableConcept getJurisdictionFirstRep() { 
      if (getJurisdiction().isEmpty()) {
        addJurisdiction();
      }
      return getJurisdiction().get(0);
    }

    /**
     * @return {@link #purpose} (Explaination of why this search parameter is needed and why it has been designed as it has.). This is the underlying object with id, value and extensions. The accessor "getPurpose" gives direct access to the value
     */
    public MarkdownType getPurposeElement() { 
      if (this.purpose == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.purpose");
        else if (Configuration.doAutoCreate())
          this.purpose = new MarkdownType(); // bb
      return this.purpose;
    }

    public boolean hasPurposeElement() { 
      return this.purpose != null && !this.purpose.isEmpty();
    }

    public boolean hasPurpose() { 
      return this.purpose != null && !this.purpose.isEmpty();
    }

    /**
     * @param value {@link #purpose} (Explaination of why this search parameter is needed and why it has been designed as it has.). This is the underlying object with id, value and extensions. The accessor "getPurpose" gives direct access to the value
     */
    public SearchParameter setPurposeElement(MarkdownType value) { 
      this.purpose = value;
      return this;
    }

    /**
     * @return Explaination of why this search parameter is needed and why it has been designed as it has.
     */
    public String getPurpose() { 
      return this.purpose == null ? null : this.purpose.getValue();
    }

    /**
     * @param value Explaination of why this search parameter is needed and why it has been designed as it has.
     */
    public SearchParameter setPurpose(String value) { 
      if (value == null)
        this.purpose = null;
      else {
        if (this.purpose == null)
          this.purpose = new MarkdownType();
        this.purpose.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #code} (The code used in the URL or the parameter name in a parameters resource for this search parameter.). This is the underlying object with id, value and extensions. The accessor "getCode" gives direct access to the value
     */
    public CodeType getCodeElement() { 
      if (this.code == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.code");
        else if (Configuration.doAutoCreate())
          this.code = new CodeType(); // bb
      return this.code;
    }

    public boolean hasCodeElement() { 
      return this.code != null && !this.code.isEmpty();
    }

    public boolean hasCode() { 
      return this.code != null && !this.code.isEmpty();
    }

    /**
     * @param value {@link #code} (The code used in the URL or the parameter name in a parameters resource for this search parameter.). This is the underlying object with id, value and extensions. The accessor "getCode" gives direct access to the value
     */
    public SearchParameter setCodeElement(CodeType value) { 
      this.code = value;
      return this;
    }

    /**
     * @return The code used in the URL or the parameter name in a parameters resource for this search parameter.
     */
    public String getCode() { 
      return this.code == null ? null : this.code.getValue();
    }

    /**
     * @param value The code used in the URL or the parameter name in a parameters resource for this search parameter.
     */
    public SearchParameter setCode(String value) { 
        if (this.code == null)
          this.code = new CodeType();
        this.code.setValue(value);
      return this;
    }

    /**
     * @return {@link #base} (The base resource type(s) that this search parameter can be used against.)
     */
    public List<CodeType> getBase() { 
      if (this.base == null)
        this.base = new ArrayList<CodeType>();
      return this.base;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setBase(List<CodeType> theBase) { 
      this.base = theBase;
      return this;
    }

    public boolean hasBase() { 
      if (this.base == null)
        return false;
      for (CodeType item : this.base)
        if (!item.isEmpty())
          return true;
      return false;
    }

    /**
     * @return {@link #base} (The base resource type(s) that this search parameter can be used against.)
     */
    public CodeType addBaseElement() {//2 
      CodeType t = new CodeType();
      if (this.base == null)
        this.base = new ArrayList<CodeType>();
      this.base.add(t);
      return t;
    }

    /**
     * @param value {@link #base} (The base resource type(s) that this search parameter can be used against.)
     */
    public SearchParameter addBase(String value) { //1
      CodeType t = new CodeType();
      t.setValue(value);
      if (this.base == null)
        this.base = new ArrayList<CodeType>();
      this.base.add(t);
      return this;
    }

    /**
     * @param value {@link #base} (The base resource type(s) that this search parameter can be used against.)
     */
    public boolean hasBase(String value) { 
      if (this.base == null)
        return false;
      for (CodeType v : this.base)
        if (v.getValue().equals(value)) // code
          return true;
      return false;
    }

    /**
     * @return {@link #type} (The type of value a search parameter refers to, and how the content is interpreted.). This is the underlying object with id, value and extensions. The accessor "getType" gives direct access to the value
     */
    public Enumeration<SearchParamType> getTypeElement() { 
      if (this.type == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.type");
        else if (Configuration.doAutoCreate())
          this.type = new Enumeration<SearchParamType>(new SearchParamTypeEnumFactory()); // bb
      return this.type;
    }

    public boolean hasTypeElement() { 
      return this.type != null && !this.type.isEmpty();
    }

    public boolean hasType() { 
      return this.type != null && !this.type.isEmpty();
    }

    /**
     * @param value {@link #type} (The type of value a search parameter refers to, and how the content is interpreted.). This is the underlying object with id, value and extensions. The accessor "getType" gives direct access to the value
     */
    public SearchParameter setTypeElement(Enumeration<SearchParamType> value) { 
      this.type = value;
      return this;
    }

    /**
     * @return The type of value a search parameter refers to, and how the content is interpreted.
     */
    public SearchParamType getType() { 
      return this.type == null ? null : this.type.getValue();
    }

    /**
     * @param value The type of value a search parameter refers to, and how the content is interpreted.
     */
    public SearchParameter setType(SearchParamType value) { 
        if (this.type == null)
          this.type = new Enumeration<SearchParamType>(new SearchParamTypeEnumFactory());
        this.type.setValue(value);
      return this;
    }

    /**
     * @return {@link #derivedFrom} (Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.). This is the underlying object with id, value and extensions. The accessor "getDerivedFrom" gives direct access to the value
     */
    public UriType getDerivedFromElement() { 
      if (this.derivedFrom == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.derivedFrom");
        else if (Configuration.doAutoCreate())
          this.derivedFrom = new UriType(); // bb
      return this.derivedFrom;
    }

    public boolean hasDerivedFromElement() { 
      return this.derivedFrom != null && !this.derivedFrom.isEmpty();
    }

    public boolean hasDerivedFrom() { 
      return this.derivedFrom != null && !this.derivedFrom.isEmpty();
    }

    /**
     * @param value {@link #derivedFrom} (Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.). This is the underlying object with id, value and extensions. The accessor "getDerivedFrom" gives direct access to the value
     */
    public SearchParameter setDerivedFromElement(UriType value) { 
      this.derivedFrom = value;
      return this;
    }

    /**
     * @return Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.
     */
    public String getDerivedFrom() { 
      return this.derivedFrom == null ? null : this.derivedFrom.getValue();
    }

    /**
     * @param value Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.
     */
    public SearchParameter setDerivedFrom(String value) { 
      if (Utilities.noString(value))
        this.derivedFrom = null;
      else {
        if (this.derivedFrom == null)
          this.derivedFrom = new UriType();
        this.derivedFrom.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #description} (A free text natural language description of the search parameter from a consumer's perspective. and how it used.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
     */
    public MarkdownType getDescriptionElement() { 
      if (this.description == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.description");
        else if (Configuration.doAutoCreate())
          this.description = new MarkdownType(); // bb
      return this.description;
    }

    public boolean hasDescriptionElement() { 
      return this.description != null && !this.description.isEmpty();
    }

    public boolean hasDescription() { 
      return this.description != null && !this.description.isEmpty();
    }

    /**
     * @param value {@link #description} (A free text natural language description of the search parameter from a consumer's perspective. and how it used.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
     */
    public SearchParameter setDescriptionElement(MarkdownType value) { 
      this.description = value;
      return this;
    }

    /**
     * @return A free text natural language description of the search parameter from a consumer's perspective. and how it used.
     */
    public String getDescription() { 
      return this.description == null ? null : this.description.getValue();
    }

    /**
     * @param value A free text natural language description of the search parameter from a consumer's perspective. and how it used.
     */
    public SearchParameter setDescription(String value) { 
        if (this.description == null)
          this.description = new MarkdownType();
        this.description.setValue(value);
      return this;
    }

    /**
     * @return {@link #expression} (A FHIRPath expression that returns a set of elements for the search parameter.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
     */
    public StringType getExpressionElement() { 
      if (this.expression == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.expression");
        else if (Configuration.doAutoCreate())
          this.expression = new StringType(); // bb
      return this.expression;
    }

    public boolean hasExpressionElement() { 
      return this.expression != null && !this.expression.isEmpty();
    }

    public boolean hasExpression() { 
      return this.expression != null && !this.expression.isEmpty();
    }

    /**
     * @param value {@link #expression} (A FHIRPath expression that returns a set of elements for the search parameter.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
     */
    public SearchParameter setExpressionElement(StringType value) { 
      this.expression = value;
      return this;
    }

    /**
     * @return A FHIRPath expression that returns a set of elements for the search parameter.
     */
    public String getExpression() { 
      return this.expression == null ? null : this.expression.getValue();
    }

    /**
     * @param value A FHIRPath expression that returns a set of elements for the search parameter.
     */
    public SearchParameter setExpression(String value) { 
      if (Utilities.noString(value))
        this.expression = null;
      else {
        if (this.expression == null)
          this.expression = new StringType();
        this.expression.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #xpath} (An XPath expression that returns a set of elements for the search parameter.). This is the underlying object with id, value and extensions. The accessor "getXpath" gives direct access to the value
     */
    public StringType getXpathElement() { 
      if (this.xpath == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.xpath");
        else if (Configuration.doAutoCreate())
          this.xpath = new StringType(); // bb
      return this.xpath;
    }

    public boolean hasXpathElement() { 
      return this.xpath != null && !this.xpath.isEmpty();
    }

    public boolean hasXpath() { 
      return this.xpath != null && !this.xpath.isEmpty();
    }

    /**
     * @param value {@link #xpath} (An XPath expression that returns a set of elements for the search parameter.). This is the underlying object with id, value and extensions. The accessor "getXpath" gives direct access to the value
     */
    public SearchParameter setXpathElement(StringType value) { 
      this.xpath = value;
      return this;
    }

    /**
     * @return An XPath expression that returns a set of elements for the search parameter.
     */
    public String getXpath() { 
      return this.xpath == null ? null : this.xpath.getValue();
    }

    /**
     * @param value An XPath expression that returns a set of elements for the search parameter.
     */
    public SearchParameter setXpath(String value) { 
      if (Utilities.noString(value))
        this.xpath = null;
      else {
        if (this.xpath == null)
          this.xpath = new StringType();
        this.xpath.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #xpathUsage} (How the search parameter relates to the set of elements returned by evaluating the xpath query.). This is the underlying object with id, value and extensions. The accessor "getXpathUsage" gives direct access to the value
     */
    public Enumeration<XPathUsageType> getXpathUsageElement() { 
      if (this.xpathUsage == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create SearchParameter.xpathUsage");
        else if (Configuration.doAutoCreate())
          this.xpathUsage = new Enumeration<XPathUsageType>(new XPathUsageTypeEnumFactory()); // bb
      return this.xpathUsage;
    }

    public boolean hasXpathUsageElement() { 
      return this.xpathUsage != null && !this.xpathUsage.isEmpty();
    }

    public boolean hasXpathUsage() { 
      return this.xpathUsage != null && !this.xpathUsage.isEmpty();
    }

    /**
     * @param value {@link #xpathUsage} (How the search parameter relates to the set of elements returned by evaluating the xpath query.). This is the underlying object with id, value and extensions. The accessor "getXpathUsage" gives direct access to the value
     */
    public SearchParameter setXpathUsageElement(Enumeration<XPathUsageType> value) { 
      this.xpathUsage = value;
      return this;
    }

    /**
     * @return How the search parameter relates to the set of elements returned by evaluating the xpath query.
     */
    public XPathUsageType getXpathUsage() { 
      return this.xpathUsage == null ? null : this.xpathUsage.getValue();
    }

    /**
     * @param value How the search parameter relates to the set of elements returned by evaluating the xpath query.
     */
    public SearchParameter setXpathUsage(XPathUsageType value) { 
      if (value == null)
        this.xpathUsage = null;
      else {
        if (this.xpathUsage == null)
          this.xpathUsage = new Enumeration<XPathUsageType>(new XPathUsageTypeEnumFactory());
        this.xpathUsage.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #target} (Types of resource (if a resource is referenced).)
     */
    public List<CodeType> getTarget() { 
      if (this.target == null)
        this.target = new ArrayList<CodeType>();
      return this.target;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setTarget(List<CodeType> theTarget) { 
      this.target = theTarget;
      return this;
    }

    public boolean hasTarget() { 
      if (this.target == null)
        return false;
      for (CodeType item : this.target)
        if (!item.isEmpty())
          return true;
      return false;
    }

    /**
     * @return {@link #target} (Types of resource (if a resource is referenced).)
     */
    public CodeType addTargetElement() {//2 
      CodeType t = new CodeType();
      if (this.target == null)
        this.target = new ArrayList<CodeType>();
      this.target.add(t);
      return t;
    }

    /**
     * @param value {@link #target} (Types of resource (if a resource is referenced).)
     */
    public SearchParameter addTarget(String value) { //1
      CodeType t = new CodeType();
      t.setValue(value);
      if (this.target == null)
        this.target = new ArrayList<CodeType>();
      this.target.add(t);
      return this;
    }

    /**
     * @param value {@link #target} (Types of resource (if a resource is referenced).)
     */
    public boolean hasTarget(String value) { 
      if (this.target == null)
        return false;
      for (CodeType v : this.target)
        if (v.getValue().equals(value)) // code
          return true;
      return false;
    }

    /**
     * @return {@link #comparator} (Comparators supported for the search parameter.)
     */
    public List<Enumeration<SearchComparator>> getComparator() { 
      if (this.comparator == null)
        this.comparator = new ArrayList<Enumeration<SearchComparator>>();
      return this.comparator;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setComparator(List<Enumeration<SearchComparator>> theComparator) { 
      this.comparator = theComparator;
      return this;
    }

    public boolean hasComparator() { 
      if (this.comparator == null)
        return false;
      for (Enumeration<SearchComparator> item : this.comparator)
        if (!item.isEmpty())
          return true;
      return false;
    }

    /**
     * @return {@link #comparator} (Comparators supported for the search parameter.)
     */
    public Enumeration<SearchComparator> addComparatorElement() {//2 
      Enumeration<SearchComparator> t = new Enumeration<SearchComparator>(new SearchComparatorEnumFactory());
      if (this.comparator == null)
        this.comparator = new ArrayList<Enumeration<SearchComparator>>();
      this.comparator.add(t);
      return t;
    }

    /**
     * @param value {@link #comparator} (Comparators supported for the search parameter.)
     */
    public SearchParameter addComparator(SearchComparator value) { //1
      Enumeration<SearchComparator> t = new Enumeration<SearchComparator>(new SearchComparatorEnumFactory());
      t.setValue(value);
      if (this.comparator == null)
        this.comparator = new ArrayList<Enumeration<SearchComparator>>();
      this.comparator.add(t);
      return this;
    }

    /**
     * @param value {@link #comparator} (Comparators supported for the search parameter.)
     */
    public boolean hasComparator(SearchComparator value) { 
      if (this.comparator == null)
        return false;
      for (Enumeration<SearchComparator> v : this.comparator)
        if (v.getValue().equals(value)) // code
          return true;
      return false;
    }

    /**
     * @return {@link #modifier} (A modifier supported for the search parameter.)
     */
    public List<Enumeration<SearchModifierCode>> getModifier() { 
      if (this.modifier == null)
        this.modifier = new ArrayList<Enumeration<SearchModifierCode>>();
      return this.modifier;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setModifier(List<Enumeration<SearchModifierCode>> theModifier) { 
      this.modifier = theModifier;
      return this;
    }

    public boolean hasModifier() { 
      if (this.modifier == null)
        return false;
      for (Enumeration<SearchModifierCode> item : this.modifier)
        if (!item.isEmpty())
          return true;
      return false;
    }

    /**
     * @return {@link #modifier} (A modifier supported for the search parameter.)
     */
    public Enumeration<SearchModifierCode> addModifierElement() {//2 
      Enumeration<SearchModifierCode> t = new Enumeration<SearchModifierCode>(new SearchModifierCodeEnumFactory());
      if (this.modifier == null)
        this.modifier = new ArrayList<Enumeration<SearchModifierCode>>();
      this.modifier.add(t);
      return t;
    }

    /**
     * @param value {@link #modifier} (A modifier supported for the search parameter.)
     */
    public SearchParameter addModifier(SearchModifierCode value) { //1
      Enumeration<SearchModifierCode> t = new Enumeration<SearchModifierCode>(new SearchModifierCodeEnumFactory());
      t.setValue(value);
      if (this.modifier == null)
        this.modifier = new ArrayList<Enumeration<SearchModifierCode>>();
      this.modifier.add(t);
      return this;
    }

    /**
     * @param value {@link #modifier} (A modifier supported for the search parameter.)
     */
    public boolean hasModifier(SearchModifierCode value) { 
      if (this.modifier == null)
        return false;
      for (Enumeration<SearchModifierCode> v : this.modifier)
        if (v.getValue().equals(value)) // code
          return true;
      return false;
    }

    /**
     * @return {@link #chain} (Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.)
     */
    public List<StringType> getChain() { 
      if (this.chain == null)
        this.chain = new ArrayList<StringType>();
      return this.chain;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setChain(List<StringType> theChain) { 
      this.chain = theChain;
      return this;
    }

    public boolean hasChain() { 
      if (this.chain == null)
        return false;
      for (StringType item : this.chain)
        if (!item.isEmpty())
          return true;
      return false;
    }

    /**
     * @return {@link #chain} (Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.)
     */
    public StringType addChainElement() {//2 
      StringType t = new StringType();
      if (this.chain == null)
        this.chain = new ArrayList<StringType>();
      this.chain.add(t);
      return t;
    }

    /**
     * @param value {@link #chain} (Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.)
     */
    public SearchParameter addChain(String value) { //1
      StringType t = new StringType();
      t.setValue(value);
      if (this.chain == null)
        this.chain = new ArrayList<StringType>();
      this.chain.add(t);
      return this;
    }

    /**
     * @param value {@link #chain} (Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.)
     */
    public boolean hasChain(String value) { 
      if (this.chain == null)
        return false;
      for (StringType v : this.chain)
        if (v.getValue().equals(value)) // string
          return true;
      return false;
    }

    /**
     * @return {@link #component} (Used to define the parts of a composite search parameter.)
     */
    public List<SearchParameterComponentComponent> getComponent() { 
      if (this.component == null)
        this.component = new ArrayList<SearchParameterComponentComponent>();
      return this.component;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public SearchParameter setComponent(List<SearchParameterComponentComponent> theComponent) { 
      this.component = theComponent;
      return this;
    }

    public boolean hasComponent() { 
      if (this.component == null)
        return false;
      for (SearchParameterComponentComponent item : this.component)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public SearchParameterComponentComponent addComponent() { //3
      SearchParameterComponentComponent t = new SearchParameterComponentComponent();
      if (this.component == null)
        this.component = new ArrayList<SearchParameterComponentComponent>();
      this.component.add(t);
      return t;
    }

    public SearchParameter addComponent(SearchParameterComponentComponent t) { //3
      if (t == null)
        return this;
      if (this.component == null)
        this.component = new ArrayList<SearchParameterComponentComponent>();
      this.component.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #component}, creating it if it does not already exist
     */
    public SearchParameterComponentComponent getComponentFirstRep() { 
      if (getComponent().isEmpty()) {
        addComponent();
      }
      return getComponent().get(0);
    }

      protected void listChildren(List<Property> children) {
        super.listChildren(children);
        children.add(new Property("url", "uri", "An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).", 0, 1, url));
        children.add(new Property("version", "string", "The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.", 0, 1, version));
        children.add(new Property("name", "string", "A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.", 0, 1, name));
        children.add(new Property("status", "code", "The status of this search parameter. Enables tracking the life-cycle of the content.", 0, 1, status));
        children.add(new Property("experimental", "boolean", "A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.", 0, 1, experimental));
        children.add(new Property("date", "dateTime", "The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.", 0, 1, date));
        children.add(new Property("publisher", "string", "The name of the individual or organization that published the search parameter.", 0, 1, publisher));
        children.add(new Property("contact", "ContactDetail", "Contact details to assist a user in finding and communicating with the publisher.", 0, java.lang.Integer.MAX_VALUE, contact));
        children.add(new Property("useContext", "UsageContext", "The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate search parameter instances.", 0, java.lang.Integer.MAX_VALUE, useContext));
        children.add(new Property("jurisdiction", "CodeableConcept", "A legal or geographic region in which the search parameter is intended to be used.", 0, java.lang.Integer.MAX_VALUE, jurisdiction));
        children.add(new Property("purpose", "markdown", "Explaination of why this search parameter is needed and why it has been designed as it has.", 0, 1, purpose));
        children.add(new Property("code", "code", "The code used in the URL or the parameter name in a parameters resource for this search parameter.", 0, 1, code));
        children.add(new Property("base", "code", "The base resource type(s) that this search parameter can be used against.", 0, java.lang.Integer.MAX_VALUE, base));
        children.add(new Property("type", "code", "The type of value a search parameter refers to, and how the content is interpreted.", 0, 1, type));
        children.add(new Property("derivedFrom", "uri", "Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.", 0, 1, derivedFrom));
        children.add(new Property("description", "markdown", "A free text natural language description of the search parameter from a consumer's perspective. and how it used.", 0, 1, description));
        children.add(new Property("expression", "string", "A FHIRPath expression that returns a set of elements for the search parameter.", 0, 1, expression));
        children.add(new Property("xpath", "string", "An XPath expression that returns a set of elements for the search parameter.", 0, 1, xpath));
        children.add(new Property("xpathUsage", "code", "How the search parameter relates to the set of elements returned by evaluating the xpath query.", 0, 1, xpathUsage));
        children.add(new Property("target", "code", "Types of resource (if a resource is referenced).", 0, java.lang.Integer.MAX_VALUE, target));
        children.add(new Property("comparator", "code", "Comparators supported for the search parameter.", 0, java.lang.Integer.MAX_VALUE, comparator));
        children.add(new Property("modifier", "code", "A modifier supported for the search parameter.", 0, java.lang.Integer.MAX_VALUE, modifier));
        children.add(new Property("chain", "string", "Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.", 0, java.lang.Integer.MAX_VALUE, chain));
        children.add(new Property("component", "", "Used to define the parts of a composite search parameter.", 0, java.lang.Integer.MAX_VALUE, component));
      }

      @Override
      public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
        switch (_hash) {
        case 116079: /*url*/  return new Property("url", "uri", "An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this search parameter is (or will be) published. The URL SHOULD include the major version of the search parameter. For more information see [Technical and Business Versions](resource.html#versions).", 0, 1, url);
        case 351608024: /*version*/  return new Property("version", "string", "The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.", 0, 1, version);
        case 3373707: /*name*/  return new Property("name", "string", "A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generation.", 0, 1, name);
        case -892481550: /*status*/  return new Property("status", "code", "The status of this search parameter. Enables tracking the life-cycle of the content.", 0, 1, status);
        case -404562712: /*experimental*/  return new Property("experimental", "boolean", "A boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.", 0, 1, experimental);
        case 3076014: /*date*/  return new Property("date", "dateTime", "The date  (and optionally time) when the search parameter was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changes.", 0, 1, date);
        case 1447404028: /*publisher*/  return new Property("publisher", "string", "The name of the individual or organization that published the search parameter.", 0, 1, publisher);
        case 951526432: /*contact*/  return new Property("contact", "ContactDetail", "Contact details to assist a user in finding and communicating with the publisher.", 0, java.lang.Integer.MAX_VALUE, contact);
        case -669707736: /*useContext*/  return new Property("useContext", "UsageContext", "The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate search parameter instances.", 0, java.lang.Integer.MAX_VALUE, useContext);
        case -507075711: /*jurisdiction*/  return new Property("jurisdiction", "CodeableConcept", "A legal or geographic region in which the search parameter is intended to be used.", 0, java.lang.Integer.MAX_VALUE, jurisdiction);
        case -220463842: /*purpose*/  return new Property("purpose", "markdown", "Explaination of why this search parameter is needed and why it has been designed as it has.", 0, 1, purpose);
        case 3059181: /*code*/  return new Property("code", "code", "The code used in the URL or the parameter name in a parameters resource for this search parameter.", 0, 1, code);
        case 3016401: /*base*/  return new Property("base", "code", "The base resource type(s) that this search parameter can be used against.", 0, java.lang.Integer.MAX_VALUE, base);
        case 3575610: /*type*/  return new Property("type", "code", "The type of value a search parameter refers to, and how the content is interpreted.", 0, 1, type);
        case 1077922663: /*derivedFrom*/  return new Property("derivedFrom", "uri", "Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. I.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.", 0, 1, derivedFrom);
        case -1724546052: /*description*/  return new Property("description", "markdown", "A free text natural language description of the search parameter from a consumer's perspective. and how it used.", 0, 1, description);
        case -1795452264: /*expression*/  return new Property("expression", "string", "A FHIRPath expression that returns a set of elements for the search parameter.", 0, 1, expression);
        case 114256029: /*xpath*/  return new Property("xpath", "string", "An XPath expression that returns a set of elements for the search parameter.", 0, 1, xpath);
        case 1801322244: /*xpathUsage*/  return new Property("xpathUsage", "code", "How the search parameter relates to the set of elements returned by evaluating the xpath query.", 0, 1, xpathUsage);
        case -880905839: /*target*/  return new Property("target", "code", "Types of resource (if a resource is referenced).", 0, java.lang.Integer.MAX_VALUE, target);
        case -844673834: /*comparator*/  return new Property("comparator", "code", "Comparators supported for the search parameter.", 0, java.lang.Integer.MAX_VALUE, comparator);
        case -615513385: /*modifier*/  return new Property("modifier", "code", "A modifier supported for the search parameter.", 0, java.lang.Integer.MAX_VALUE, modifier);
        case 94623425: /*chain*/  return new Property("chain", "string", "Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.", 0, java.lang.Integer.MAX_VALUE, chain);
        case -1399907075: /*component*/  return new Property("component", "", "Used to define the parts of a composite search parameter.", 0, java.lang.Integer.MAX_VALUE, component);
        default: return super.getNamedProperty(_hash, _name, _checkValid);
        }

      }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case 116079: /*url*/ return this.url == null ? new Base[0] : new Base[] {this.url}; // UriType
        case 351608024: /*version*/ return this.version == null ? new Base[0] : new Base[] {this.version}; // StringType
        case 3373707: /*name*/ return this.name == null ? new Base[0] : new Base[] {this.name}; // StringType
        case -892481550: /*status*/ return this.status == null ? new Base[0] : new Base[] {this.status}; // Enumeration<PublicationStatus>
        case -404562712: /*experimental*/ return this.experimental == null ? new Base[0] : new Base[] {this.experimental}; // BooleanType
        case 3076014: /*date*/ return this.date == null ? new Base[0] : new Base[] {this.date}; // DateTimeType
        case 1447404028: /*publisher*/ return this.publisher == null ? new Base[0] : new Base[] {this.publisher}; // StringType
        case 951526432: /*contact*/ return this.contact == null ? new Base[0] : this.contact.toArray(new Base[this.contact.size()]); // ContactDetail
        case -669707736: /*useContext*/ return this.useContext == null ? new Base[0] : this.useContext.toArray(new Base[this.useContext.size()]); // UsageContext
        case -507075711: /*jurisdiction*/ return this.jurisdiction == null ? new Base[0] : this.jurisdiction.toArray(new Base[this.jurisdiction.size()]); // CodeableConcept
        case -220463842: /*purpose*/ return this.purpose == null ? new Base[0] : new Base[] {this.purpose}; // MarkdownType
        case 3059181: /*code*/ return this.code == null ? new Base[0] : new Base[] {this.code}; // CodeType
        case 3016401: /*base*/ return this.base == null ? new Base[0] : this.base.toArray(new Base[this.base.size()]); // CodeType
        case 3575610: /*type*/ return this.type == null ? new Base[0] : new Base[] {this.type}; // Enumeration<SearchParamType>
        case 1077922663: /*derivedFrom*/ return this.derivedFrom == null ? new Base[0] : new Base[] {this.derivedFrom}; // UriType
        case -1724546052: /*description*/ return this.description == null ? new Base[0] : new Base[] {this.description}; // MarkdownType
        case -1795452264: /*expression*/ return this.expression == null ? new Base[0] : new Base[] {this.expression}; // StringType
        case 114256029: /*xpath*/ return this.xpath == null ? new Base[0] : new Base[] {this.xpath}; // StringType
        case 1801322244: /*xpathUsage*/ return this.xpathUsage == null ? new Base[0] : new Base[] {this.xpathUsage}; // Enumeration<XPathUsageType>
        case -880905839: /*target*/ return this.target == null ? new Base[0] : this.target.toArray(new Base[this.target.size()]); // CodeType
        case -844673834: /*comparator*/ return this.comparator == null ? new Base[0] : this.comparator.toArray(new Base[this.comparator.size()]); // Enumeration<SearchComparator>
        case -615513385: /*modifier*/ return this.modifier == null ? new Base[0] : this.modifier.toArray(new Base[this.modifier.size()]); // Enumeration<SearchModifierCode>
        case 94623425: /*chain*/ return this.chain == null ? new Base[0] : this.chain.toArray(new Base[this.chain.size()]); // StringType
        case -1399907075: /*component*/ return this.component == null ? new Base[0] : this.component.toArray(new Base[this.component.size()]); // SearchParameterComponentComponent
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case 116079: // url
          this.url = castToUri(value); // UriType
          return value;
        case 351608024: // version
          this.version = castToString(value); // StringType
          return value;
        case 3373707: // name
          this.name = castToString(value); // StringType
          return value;
        case -892481550: // status
          value = new PublicationStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<PublicationStatus>
          return value;
        case -404562712: // experimental
          this.experimental = castToBoolean(value); // BooleanType
          return value;
        case 3076014: // date
          this.date = castToDateTime(value); // DateTimeType
          return value;
        case 1447404028: // publisher
          this.publisher = castToString(value); // StringType
          return value;
        case 951526432: // contact
          this.getContact().add(castToContactDetail(value)); // ContactDetail
          return value;
        case -669707736: // useContext
          this.getUseContext().add(castToUsageContext(value)); // UsageContext
          return value;
        case -507075711: // jurisdiction
          this.getJurisdiction().add(castToCodeableConcept(value)); // CodeableConcept
          return value;
        case -220463842: // purpose
          this.purpose = castToMarkdown(value); // MarkdownType
          return value;
        case 3059181: // code
          this.code = castToCode(value); // CodeType
          return value;
        case 3016401: // base
          this.getBase().add(castToCode(value)); // CodeType
          return value;
        case 3575610: // type
          value = new SearchParamTypeEnumFactory().fromType(castToCode(value));
          this.type = (Enumeration) value; // Enumeration<SearchParamType>
          return value;
        case 1077922663: // derivedFrom
          this.derivedFrom = castToUri(value); // UriType
          return value;
        case -1724546052: // description
          this.description = castToMarkdown(value); // MarkdownType
          return value;
        case -1795452264: // expression
          this.expression = castToString(value); // StringType
          return value;
        case 114256029: // xpath
          this.xpath = castToString(value); // StringType
          return value;
        case 1801322244: // xpathUsage
          value = new XPathUsageTypeEnumFactory().fromType(castToCode(value));
          this.xpathUsage = (Enumeration) value; // Enumeration<XPathUsageType>
          return value;
        case -880905839: // target
          this.getTarget().add(castToCode(value)); // CodeType
          return value;
        case -844673834: // comparator
          value = new SearchComparatorEnumFactory().fromType(castToCode(value));
          this.getComparator().add((Enumeration) value); // Enumeration<SearchComparator>
          return value;
        case -615513385: // modifier
          value = new SearchModifierCodeEnumFactory().fromType(castToCode(value));
          this.getModifier().add((Enumeration) value); // Enumeration<SearchModifierCode>
          return value;
        case 94623425: // chain
          this.getChain().add(castToString(value)); // StringType
          return value;
        case -1399907075: // component
          this.getComponent().add((SearchParameterComponentComponent) value); // SearchParameterComponentComponent
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("url")) {
          this.url = castToUri(value); // UriType
        } else if (name.equals("version")) {
          this.version = castToString(value); // StringType
        } else if (name.equals("name")) {
          this.name = castToString(value); // StringType
        } else if (name.equals("status")) {
          value = new PublicationStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<PublicationStatus>
        } else if (name.equals("experimental")) {
          this.experimental = castToBoolean(value); // BooleanType
        } else if (name.equals("date")) {
          this.date = castToDateTime(value); // DateTimeType
        } else if (name.equals("publisher")) {
          this.publisher = castToString(value); // StringType
        } else if (name.equals("contact")) {
          this.getContact().add(castToContactDetail(value));
        } else if (name.equals("useContext")) {
          this.getUseContext().add(castToUsageContext(value));
        } else if (name.equals("jurisdiction")) {
          this.getJurisdiction().add(castToCodeableConcept(value));
        } else if (name.equals("purpose")) {
          this.purpose = castToMarkdown(value); // MarkdownType
        } else if (name.equals("code")) {
          this.code = castToCode(value); // CodeType
        } else if (name.equals("base")) {
          this.getBase().add(castToCode(value));
        } else if (name.equals("type")) {
          value = new SearchParamTypeEnumFactory().fromType(castToCode(value));
          this.type = (Enumeration) value; // Enumeration<SearchParamType>
        } else if (name.equals("derivedFrom")) {
          this.derivedFrom = castToUri(value); // UriType
        } else if (name.equals("description")) {
          this.description = castToMarkdown(value); // MarkdownType
        } else if (name.equals("expression")) {
          this.expression = castToString(value); // StringType
        } else if (name.equals("xpath")) {
          this.xpath = castToString(value); // StringType
        } else if (name.equals("xpathUsage")) {
          value = new XPathUsageTypeEnumFactory().fromType(castToCode(value));
          this.xpathUsage = (Enumeration) value; // Enumeration<XPathUsageType>
        } else if (name.equals("target")) {
          this.getTarget().add(castToCode(value));
        } else if (name.equals("comparator")) {
          value = new SearchComparatorEnumFactory().fromType(castToCode(value));
          this.getComparator().add((Enumeration) value);
        } else if (name.equals("modifier")) {
          value = new SearchModifierCodeEnumFactory().fromType(castToCode(value));
          this.getModifier().add((Enumeration) value);
        } else if (name.equals("chain")) {
          this.getChain().add(castToString(value));
        } else if (name.equals("component")) {
          this.getComponent().add((SearchParameterComponentComponent) value);
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case 116079:  return getUrlElement();
        case 351608024:  return getVersionElement();
        case 3373707:  return getNameElement();
        case -892481550:  return getStatusElement();
        case -404562712:  return getExperimentalElement();
        case 3076014:  return getDateElement();
        case 1447404028:  return getPublisherElement();
        case 951526432:  return addContact(); 
        case -669707736:  return addUseContext(); 
        case -507075711:  return addJurisdiction(); 
        case -220463842:  return getPurposeElement();
        case 3059181:  return getCodeElement();
        case 3016401:  return addBaseElement();
        case 3575610:  return getTypeElement();
        case 1077922663:  return getDerivedFromElement();
        case -1724546052:  return getDescriptionElement();
        case -1795452264:  return getExpressionElement();
        case 114256029:  return getXpathElement();
        case 1801322244:  return getXpathUsageElement();
        case -880905839:  return addTargetElement();
        case -844673834:  return addComparatorElement();
        case -615513385:  return addModifierElement();
        case 94623425:  return addChainElement();
        case -1399907075:  return addComponent(); 
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case 116079: /*url*/ return new String[] {"uri"};
        case 351608024: /*version*/ return new String[] {"string"};
        case 3373707: /*name*/ return new String[] {"string"};
        case -892481550: /*status*/ return new String[] {"code"};
        case -404562712: /*experimental*/ return new String[] {"boolean"};
        case 3076014: /*date*/ return new String[] {"dateTime"};
        case 1447404028: /*publisher*/ return new String[] {"string"};
        case 951526432: /*contact*/ return new String[] {"ContactDetail"};
        case -669707736: /*useContext*/ return new String[] {"UsageContext"};
        case -507075711: /*jurisdiction*/ return new String[] {"CodeableConcept"};
        case -220463842: /*purpose*/ return new String[] {"markdown"};
        case 3059181: /*code*/ return new String[] {"code"};
        case 3016401: /*base*/ return new String[] {"code"};
        case 3575610: /*type*/ return new String[] {"code"};
        case 1077922663: /*derivedFrom*/ return new String[] {"uri"};
        case -1724546052: /*description*/ return new String[] {"markdown"};
        case -1795452264: /*expression*/ return new String[] {"string"};
        case 114256029: /*xpath*/ return new String[] {"string"};
        case 1801322244: /*xpathUsage*/ return new String[] {"code"};
        case -880905839: /*target*/ return new String[] {"code"};
        case -844673834: /*comparator*/ return new String[] {"code"};
        case -615513385: /*modifier*/ return new String[] {"code"};
        case 94623425: /*chain*/ return new String[] {"string"};
        case -1399907075: /*component*/ return new String[] {};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("url")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.url");
        }
        else if (name.equals("version")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.version");
        }
        else if (name.equals("name")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.name");
        }
        else if (name.equals("status")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.status");
        }
        else if (name.equals("experimental")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.experimental");
        }
        else if (name.equals("date")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.date");
        }
        else if (name.equals("publisher")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.publisher");
        }
        else if (name.equals("contact")) {
          return addContact();
        }
        else if (name.equals("useContext")) {
          return addUseContext();
        }
        else if (name.equals("jurisdiction")) {
          return addJurisdiction();
        }
        else if (name.equals("purpose")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.purpose");
        }
        else if (name.equals("code")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.code");
        }
        else if (name.equals("base")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.base");
        }
        else if (name.equals("type")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.type");
        }
        else if (name.equals("derivedFrom")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.derivedFrom");
        }
        else if (name.equals("description")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.description");
        }
        else if (name.equals("expression")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.expression");
        }
        else if (name.equals("xpath")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.xpath");
        }
        else if (name.equals("xpathUsage")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.xpathUsage");
        }
        else if (name.equals("target")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.target");
        }
        else if (name.equals("comparator")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.comparator");
        }
        else if (name.equals("modifier")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.modifier");
        }
        else if (name.equals("chain")) {
          throw new FHIRException("Cannot call addChild on a singleton property SearchParameter.chain");
        }
        else if (name.equals("component")) {
          return addComponent();
        }
        else
          return super.addChild(name);
      }

  public String fhirType() {
    return "SearchParameter";

  }

      public SearchParameter copy() {
        SearchParameter dst = new SearchParameter();
        copyValues(dst);
        dst.url = url == null ? null : url.copy();
        dst.version = version == null ? null : version.copy();
        dst.name = name == null ? null : name.copy();
        dst.status = status == null ? null : status.copy();
        dst.experimental = experimental == null ? null : experimental.copy();
        dst.date = date == null ? null : date.copy();
        dst.publisher = publisher == null ? null : publisher.copy();
        if (contact != null) {
          dst.contact = new ArrayList<ContactDetail>();
          for (ContactDetail i : contact)
            dst.contact.add(i.copy());
        };
        if (useContext != null) {
          dst.useContext = new ArrayList<UsageContext>();
          for (UsageContext i : useContext)
            dst.useContext.add(i.copy());
        };
        if (jurisdiction != null) {
          dst.jurisdiction = new ArrayList<CodeableConcept>();
          for (CodeableConcept i : jurisdiction)
            dst.jurisdiction.add(i.copy());
        };
        dst.purpose = purpose == null ? null : purpose.copy();
        dst.code = code == null ? null : code.copy();
        if (base != null) {
          dst.base = new ArrayList<CodeType>();
          for (CodeType i : base)
            dst.base.add(i.copy());
        };
        dst.type = type == null ? null : type.copy();
        dst.derivedFrom = derivedFrom == null ? null : derivedFrom.copy();
        dst.description = description == null ? null : description.copy();
        dst.expression = expression == null ? null : expression.copy();
        dst.xpath = xpath == null ? null : xpath.copy();
        dst.xpathUsage = xpathUsage == null ? null : xpathUsage.copy();
        if (target != null) {
          dst.target = new ArrayList<CodeType>();
          for (CodeType i : target)
            dst.target.add(i.copy());
        };
        if (comparator != null) {
          dst.comparator = new ArrayList<Enumeration<SearchComparator>>();
          for (Enumeration<SearchComparator> i : comparator)
            dst.comparator.add(i.copy());
        };
        if (modifier != null) {
          dst.modifier = new ArrayList<Enumeration<SearchModifierCode>>();
          for (Enumeration<SearchModifierCode> i : modifier)
            dst.modifier.add(i.copy());
        };
        if (chain != null) {
          dst.chain = new ArrayList<StringType>();
          for (StringType i : chain)
            dst.chain.add(i.copy());
        };
        if (component != null) {
          dst.component = new ArrayList<SearchParameterComponentComponent>();
          for (SearchParameterComponentComponent i : component)
            dst.component.add(i.copy());
        };
        return dst;
      }

      protected SearchParameter typedCopy() {
        return copy();
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof SearchParameter))
          return false;
        SearchParameter o = (SearchParameter) other_;
        return compareDeep(purpose, o.purpose, true) && compareDeep(code, o.code, true) && compareDeep(base, o.base, true)
           && compareDeep(type, o.type, true) && compareDeep(derivedFrom, o.derivedFrom, true) && compareDeep(expression, o.expression, true)
           && compareDeep(xpath, o.xpath, true) && compareDeep(xpathUsage, o.xpathUsage, true) && compareDeep(target, o.target, true)
           && compareDeep(comparator, o.comparator, true) && compareDeep(modifier, o.modifier, true) && compareDeep(chain, o.chain, true)
           && compareDeep(component, o.component, true);
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof SearchParameter))
          return false;
        SearchParameter o = (SearchParameter) other_;
        return compareValues(purpose, o.purpose, true) && compareValues(code, o.code, true) && compareValues(base, o.base, true)
           && compareValues(type, o.type, true) && compareValues(derivedFrom, o.derivedFrom, true) && compareValues(expression, o.expression, true)
           && compareValues(xpath, o.xpath, true) && compareValues(xpathUsage, o.xpathUsage, true) && compareValues(target, o.target, true)
           && compareValues(comparator, o.comparator, true) && compareValues(modifier, o.modifier, true) && compareValues(chain, o.chain, true)
          ;
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(purpose, code, base, type
          , derivedFrom, expression, xpath, xpathUsage, target, comparator, modifier, chain
          , component);
      }

  @Override
  public ResourceType getResourceType() {
    return ResourceType.SearchParameter;
   }

 /**
   * Search parameter: <b>date</b>
   * <p>
   * Description: <b>The search parameter publication date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>SearchParameter.date</b><br>
   * </p>
   */
  @SearchParamDefinition(name="date", path="SearchParameter.date", description="The search parameter publication date", type="date" )
  public static final String SP_DATE = "date";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>date</b>
   * <p>
   * Description: <b>The search parameter publication date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>SearchParameter.date</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.DateClientParam DATE = new ca.uhn.fhir.rest.gclient.DateClientParam(SP_DATE);

 /**
   * Search parameter: <b>code</b>
   * <p>
   * Description: <b>Code used in URL</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.code</b><br>
   * </p>
   */
  @SearchParamDefinition(name="code", path="SearchParameter.code", description="Code used in URL", type="token" )
  public static final String SP_CODE = "code";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>code</b>
   * <p>
   * Description: <b>Code used in URL</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.code</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam CODE = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_CODE);

 /**
   * Search parameter: <b>jurisdiction</b>
   * <p>
   * Description: <b>Intended jurisdiction for the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.jurisdiction</b><br>
   * </p>
   */
  @SearchParamDefinition(name="jurisdiction", path="SearchParameter.jurisdiction", description="Intended jurisdiction for the search parameter", type="token" )
  public static final String SP_JURISDICTION = "jurisdiction";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>jurisdiction</b>
   * <p>
   * Description: <b>Intended jurisdiction for the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.jurisdiction</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam JURISDICTION = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_JURISDICTION);

 /**
   * Search parameter: <b>description</b>
   * <p>
   * Description: <b>The description of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.description</b><br>
   * </p>
   */
  @SearchParamDefinition(name="description", path="SearchParameter.description", description="The description of the search parameter", type="string" )
  public static final String SP_DESCRIPTION = "description";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>description</b>
   * <p>
   * Description: <b>The description of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.description</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam DESCRIPTION = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_DESCRIPTION);

 /**
   * Search parameter: <b>derived-from</b>
   * <p>
   * Description: <b>Original Definition for the search parameter</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>SearchParameter.derivedFrom</b><br>
   * </p>
   */
  @SearchParamDefinition(name="derived-from", path="SearchParameter.derivedFrom", description="Original Definition for the search parameter", type="uri" )
  public static final String SP_DERIVED_FROM = "derived-from";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>derived-from</b>
   * <p>
   * Description: <b>Original Definition for the search parameter</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>SearchParameter.derivedFrom</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.UriClientParam DERIVED_FROM = new ca.uhn.fhir.rest.gclient.UriClientParam(SP_DERIVED_FROM);

 /**
   * Search parameter: <b>type</b>
   * <p>
   * Description: <b>number | date | string | token | reference | composite | quantity | uri</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.type</b><br>
   * </p>
   */
  @SearchParamDefinition(name="type", path="SearchParameter.type", description="number | date | string | token | reference | composite | quantity | uri", type="token" )
  public static final String SP_TYPE = "type";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>type</b>
   * <p>
   * Description: <b>number | date | string | token | reference | composite | quantity | uri</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.type</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam TYPE = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_TYPE);

 /**
   * Search parameter: <b>version</b>
   * <p>
   * Description: <b>The business version of the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.version</b><br>
   * </p>
   */
  @SearchParamDefinition(name="version", path="SearchParameter.version", description="The business version of the search parameter", type="token" )
  public static final String SP_VERSION = "version";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>version</b>
   * <p>
   * Description: <b>The business version of the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.version</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam VERSION = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_VERSION);

 /**
   * Search parameter: <b>url</b>
   * <p>
   * Description: <b>The uri that identifies the search parameter</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>SearchParameter.url</b><br>
   * </p>
   */
  @SearchParamDefinition(name="url", path="SearchParameter.url", description="The uri that identifies the search parameter", type="uri" )
  public static final String SP_URL = "url";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>url</b>
   * <p>
   * Description: <b>The uri that identifies the search parameter</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>SearchParameter.url</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.UriClientParam URL = new ca.uhn.fhir.rest.gclient.UriClientParam(SP_URL);

 /**
   * Search parameter: <b>target</b>
   * <p>
   * Description: <b>Types of resource (if a resource reference)</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.target</b><br>
   * </p>
   */
  @SearchParamDefinition(name="target", path="SearchParameter.target", description="Types of resource (if a resource reference)", type="token" )
  public static final String SP_TARGET = "target";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>target</b>
   * <p>
   * Description: <b>Types of resource (if a resource reference)</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.target</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam TARGET = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_TARGET);

 /**
   * Search parameter: <b>component</b>
   * <p>
   * Description: <b>Defines how the part works</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>SearchParameter.component.definition</b><br>
   * </p>
   */
  @SearchParamDefinition(name="component", path="SearchParameter.component.definition", description="Defines how the part works", type="reference", target={SearchParameter.class } )
  public static final String SP_COMPONENT = "component";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>component</b>
   * <p>
   * Description: <b>Defines how the part works</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>SearchParameter.component.definition</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam COMPONENT = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_COMPONENT);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>SearchParameter:component</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_COMPONENT = new ca.uhn.fhir.model.api.Include("SearchParameter:component").toLocked();

 /**
   * Search parameter: <b>name</b>
   * <p>
   * Description: <b>Computationally friendly name of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.name</b><br>
   * </p>
   */
  @SearchParamDefinition(name="name", path="SearchParameter.name", description="Computationally friendly name of the search parameter", type="string" )
  public static final String SP_NAME = "name";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>name</b>
   * <p>
   * Description: <b>Computationally friendly name of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.name</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam NAME = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_NAME);

 /**
   * Search parameter: <b>publisher</b>
   * <p>
   * Description: <b>Name of the publisher of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.publisher</b><br>
   * </p>
   */
  @SearchParamDefinition(name="publisher", path="SearchParameter.publisher", description="Name of the publisher of the search parameter", type="string" )
  public static final String SP_PUBLISHER = "publisher";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>publisher</b>
   * <p>
   * Description: <b>Name of the publisher of the search parameter</b><br>
   * Type: <b>string</b><br>
   * Path: <b>SearchParameter.publisher</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam PUBLISHER = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_PUBLISHER);

 /**
   * Search parameter: <b>status</b>
   * <p>
   * Description: <b>The current status of the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.status</b><br>
   * </p>
   */
  @SearchParamDefinition(name="status", path="SearchParameter.status", description="The current status of the search parameter", type="token" )
  public static final String SP_STATUS = "status";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>status</b>
   * <p>
   * Description: <b>The current status of the search parameter</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.status</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam STATUS = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_STATUS);

 /**
   * Search parameter: <b>base</b>
   * <p>
   * Description: <b>The resource type(s) this search parameter applies to</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.base</b><br>
   * </p>
   */
  @SearchParamDefinition(name="base", path="SearchParameter.base", description="The resource type(s) this search parameter applies to", type="token" )
  public static final String SP_BASE = "base";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>base</b>
   * <p>
   * Description: <b>The resource type(s) this search parameter applies to</b><br>
   * Type: <b>token</b><br>
   * Path: <b>SearchParameter.base</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam BASE = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_BASE);


}