package org.hl7.fhir.r4.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 Tue, May 12, 2020 07:26+1000 for FHIR v4.0.1
import java.util.ArrayList;
import java.util.List;

import org.hl7.fhir.exceptions.FHIRException;
import org.hl7.fhir.instance.model.api.IBaseElement;
import org.hl7.fhir.instance.model.api.IBaseHasExtensions;
import org.hl7.fhir.utilities.Utilities;

import ca.uhn.fhir.model.api.annotation.Child;
import ca.uhn.fhir.model.api.annotation.Description;

/**
 * Base definition for all elements in a resource.
 */
public abstract class Element extends Base implements IBaseHasExtensions, IBaseElement {

  /**
   * Unique id for the element within a resource (for internal references). This
   * may be any string value that does not contain spaces.
   */
  @Child(name = "id", type = { StringType.class }, order = 0, min = 0, max = 1, modifier = false, summary = false)
  @Description(shortDefinition = "Unique id for inter-element referencing", formalDefinition = "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.")
  protected StringType id;

  /**
   * May be used to represent additional information that is not part of the basic
   * definition of the element. To make the use of extensions safe and manageable,
   * there is a strict set of governance applied to the definition and use of
   * extensions. Though any implementer can define an extension, there is a set of
   * requirements that SHALL be met as part of the definition of the extension.
   */
  @Child(name = "extension", type = {
      Extension.class }, order = 1, min = 0, max = Child.MAX_UNLIMITED, modifier = false, summary = false)
  @Description(shortDefinition = "Additional content defined by implementations", formalDefinition = "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.")
  protected List<Extension> extension;

  private static final long serialVersionUID = -1452745816L;

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

  /**
   * @return {@link #id} (Unique id for the element within a resource (for
   *         internal references). This may be any string value that does not
   *         contain spaces.). This is the underlying object with id, value and
   *         extensions. The accessor "getId" gives direct access to the value
   */
  public StringType getIdElement() {
    if (this.id == null)
      if (Configuration.errorOnAutoCreate())
        throw new Error("Attempt to auto-create Element.id");
      else if (Configuration.doAutoCreate())
        this.id = new StringType(); // bb
    return this.id;
  }

  public boolean hasIdElement() {
    return this.id != null && !this.id.isEmpty();
  }

  public boolean hasId() {
    return this.id != null && !this.id.isEmpty();
  }

  /**
   * @param value {@link #id} (Unique id for the element within a resource (for
   *              internal references). This may be any string value that does not
   *              contain spaces.). This is the underlying object with id, value
   *              and extensions. The accessor "getId" gives direct access to the
   *              value
   */
  public Element setIdElement(StringType value) {
    this.id = value;
    return this;
  }

  /**
   * @return Unique id for the element within a resource (for internal
   *         references). This may be any string value that does not contain
   *         spaces.
   */
  public String getId() {
    return this.id == null ? null : this.id.getValue();
  }

  /**
   * @param value Unique id for the element within a resource (for internal
   *              references). This may be any string value that does not contain
   *              spaces.
   */
  public Element setId(String value) {
    if (Utilities.noString(value))
      this.id = null;
    else {
      if (this.id == null)
        this.id = new StringType();
      this.id.setValue(value);
    }
    return this;
  }

  /**
   * @return {@link #extension} (May be used to represent additional information
   *         that is not part of the basic definition of the element. To make the
   *         use of extensions safe and manageable, there is a strict set of
   *         governance applied to the definition and use of extensions. Though
   *         any implementer can define an extension, there is a set of
   *         requirements that SHALL be met as part of the definition of the
   *         extension.)
   */
  public List<Extension> getExtension() {
    if (this.extension == null)
      this.extension = new ArrayList<Extension>();
    return this.extension;
  }

  /**
   * @return Returns a reference to <code>this</code> for easy method chaining
   */
  public Element setExtension(List<Extension> theExtension) {
    this.extension = theExtension;
    return this;
  }

  public boolean hasExtension() {
    if (this.extension == null)
      return false;
    for (Extension item : this.extension)
      if (!item.isEmpty())
        return true;
    return false;
  }

  public Extension addExtension() { // 3
    Extension t = new Extension();
    if (this.extension == null)
      this.extension = new ArrayList<Extension>();
    this.extension.add(t);
    return t;
  }

  public Element addExtension(Extension t) { // 3
    if (t == null)
      return this;
    if (this.extension == null)
      this.extension = new ArrayList<Extension>();
    this.extension.add(t);
    return this;
  }

  /**
   * @return The first repetition of repeating field {@link #extension}, creating
   *         it if it does not already exist
   */
  public Extension getExtensionFirstRep() {
    if (getExtension().isEmpty()) {
      addExtension();
    }
    return getExtension().get(0);
  }

  /**
   * Returns an unmodifiable list containing all extensions on this element which
   * match the given URL.
   * 
   * @param theUrl The URL. Must not be blank or null.
   * @return an unmodifiable list containing all extensions on this element which
   *         match the given URL
   */
  public List<Extension> getExtensionsByUrl(String theUrl) {
    org.apache.commons.lang3.Validate.notBlank(theUrl, "theUrl must not be blank or null");
    ArrayList<Extension> retVal = new ArrayList<Extension>();
    for (Extension next : getExtension()) {
      if (theUrl.equals(next.getUrl())) {
        retVal.add(next);
      }
    }
    return java.util.Collections.unmodifiableList(retVal);
  }

  public boolean hasExtension(String theUrl) {
    return !getExtensionsByUrl(theUrl).isEmpty();
  }

  public String getExtensionString(String theUrl) throws FHIRException {
    List<Extension> ext = getExtensionsByUrl(theUrl);
    if (ext.isEmpty())
      return null;
    if (ext.size() > 1)
      throw new FHIRException("Multiple matching extensions found");
    if (!ext.get(0).getValue().isPrimitive())
      throw new FHIRException("Extension could not be converted to a string");
    return ext.get(0).getValue().primitiveValue();
  }

  protected void listChildren(List<Property> children) {
    children.add(new Property("id", "string",
        "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        0, 1, id));
    children.add(new Property("extension", "Extension",
        "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        0, java.lang.Integer.MAX_VALUE, extension));
  }

  @Override
  public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
    switch (_hash) {
    case 3355:
      /* id */ return new Property("id", "string",
          "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
          0, 1, id);
    case -612557761:
      /* extension */ return new Property("extension", "Extension",
          "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
          0, java.lang.Integer.MAX_VALUE, extension);
    default:
      return super.getNamedProperty(_hash, _name, _checkValid);
    }

  }

  @Override
  public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
    switch (hash) {
    case 3355:
      /* id */ return this.id == null ? new Base[0] : new Base[] { this.id }; // StringType
    case -612557761:
      /* extension */ return this.extension == null ? new Base[0]
          : this.extension.toArray(new Base[this.extension.size()]); // Extension
    default:
      return super.getProperty(hash, name, checkValid);
    }

  }

  @Override
  public Base setProperty(int hash, String name, Base value) throws FHIRException {
    switch (hash) {
    case 3355: // id
      this.id = castToString(value); // StringType
      return value;
    case -612557761: // extension
      this.getExtension().add(castToExtension(value)); // Extension
      return value;
    default:
      return super.setProperty(hash, name, value);
    }

  }

  @Override
  public Base setProperty(String name, Base value) throws FHIRException {
    if (name.equals("id")) {
      this.id = castToString(value); // StringType
    } else if (name.equals("extension")) {
      this.getExtension().add(castToExtension(value));
    } else
      return super.setProperty(name, value);
    return value;
  }

  @Override
  public Base makeProperty(int hash, String name) throws FHIRException {
    switch (hash) {
    case 3355:
      return getIdElement();
    case -612557761:
      return addExtension();
    default:
      return super.makeProperty(hash, name);
    }

  }

  @Override
  public String[] getTypesForProperty(int hash, String name) throws FHIRException {
    switch (hash) {
    case 3355:
      /* id */ return new String[] { "string" };
    case -612557761:
      /* extension */ return new String[] { "Extension" };
    default:
      return super.getTypesForProperty(hash, name);
    }

  }

  @Override
  public Base addChild(String name) throws FHIRException {
    if (name.equals("id")) {
      throw new FHIRException("Cannot call addChild on a singleton property Element.id");
    } else if (name.equals("extension")) {
      return addExtension();
    } else
      return super.addChild(name);
  }

  public String fhirType() {
    return "Element";

  }

  public abstract Element copy();

  public void copyValues(Element dst) {
    dst.id = id == null ? null : id.copy();
    if (extension != null) {
      dst.extension = new ArrayList<Extension>();
      for (Extension i : extension)
        dst.extension.add(i.copy());
    }
    ;
  }

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

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

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

  @Override
  public String getIdBase() {
    return getId();
  }

  @Override
  public void setIdBase(String value) {
    setId(value);
  }

// added from java-adornments.txt:
  public void addExtension(String url, Type value) {
    if (disallowExtensions)
      throw new Error("Extensions are not allowed in this context");
    Extension ex = new Extension();
    ex.setUrl(url);
    ex.setValue(value);
    getExtension().add(ex);
  }

  public Extension getExtensionByUrl(String theUrl) {
    org.apache.commons.lang3.Validate.notBlank(theUrl, "theUrl must not be blank or null");
    ArrayList<Extension> retVal = new ArrayList<Extension>();
    for (Extension next : getExtension()) {
      if (theUrl.equals(next.getUrl())) {
        retVal.add(next);
      }
    }
    if (retVal.size() == 0)
      return null;
    else {
      org.apache.commons.lang3.Validate.isTrue(retVal.size() == 1, "Url " + theUrl + " must have only one match");
      return retVal.get(0);
    }
  }

  public void removeExtension(String theUrl) {
    for (int i = getExtension().size() - 1; i >= 0; i--) {
      if (theUrl.equals(getExtension().get(i).getUrl()))
        getExtension().remove(i);
    }
  }

  /**
   * This is used in the FHIRPath engine to record that no extensions are allowed
   * for this item in the context in which it is used. todo: enforce this....
   */
  private boolean disallowExtensions;

  public boolean isDisallowExtensions() {
    return disallowExtensions;
  }

  public Element setDisallowExtensions(boolean disallowExtensions) {
    this.disallowExtensions = disallowExtensions;
    return this;
  }

  public Element noExtensions() {
    this.disallowExtensions = true;
    return this;
  }

// end addition

}