001package org.hl7.fhir.dstu3.elementmodel;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
010   * Redistributions of source code must retain the above copyright notice, this 
011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
016     endorse or promote products derived from this software without specific 
017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
022  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
024  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
025  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
027  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
028  POSSIBILITY OF SUCH DAMAGE.
029  
030 */
031
032
033
034import java.io.ByteArrayInputStream;
035import java.io.ByteArrayOutputStream;
036import java.io.IOException;
037import java.util.ArrayList;
038import java.util.List;
039
040import org.hl7.fhir.dstu3.conformance.ProfileUtilities;
041import org.hl7.fhir.dstu3.context.IWorkerContext;
042import org.hl7.fhir.dstu3.formats.IParser.OutputStyle;
043import org.hl7.fhir.dstu3.model.Base;
044import org.hl7.fhir.dstu3.model.CodeableConcept;
045import org.hl7.fhir.dstu3.model.Coding;
046import org.hl7.fhir.dstu3.model.ElementDefinition;
047import org.hl7.fhir.dstu3.model.Factory;
048import org.hl7.fhir.dstu3.model.Identifier;
049import org.hl7.fhir.dstu3.model.PrimitiveType;
050import org.hl7.fhir.dstu3.model.Reference;
051import org.hl7.fhir.dstu3.model.Resource;
052import org.hl7.fhir.dstu3.model.StructureDefinition;
053import org.hl7.fhir.dstu3.model.StructureDefinition.StructureDefinitionKind;
054import org.hl7.fhir.dstu3.model.Type;
055import org.hl7.fhir.exceptions.DefinitionException;
056import org.hl7.fhir.exceptions.FHIRException;
057import org.hl7.fhir.exceptions.FHIRFormatError;
058
059
060
061public class ObjectConverter  {
062
063  private IWorkerContext context;
064
065  public ObjectConverter(IWorkerContext context) {
066    this.context = context;
067  }
068
069  public Element convert(Resource ig) throws IOException, FHIRFormatError, DefinitionException {
070    if (ig == null)
071      return null;
072    ByteArrayOutputStream bs = new ByteArrayOutputStream();
073    org.hl7.fhir.dstu3.formats.JsonParser jp = new org.hl7.fhir.dstu3.formats.JsonParser();
074    jp.compose(bs, ig);
075    ByteArrayInputStream bi = new ByteArrayInputStream(bs.toByteArray());
076    return new JsonParser(context).parse(bi);
077  }
078
079  public Element convert(Property property, Type type) throws FHIRException {
080    return convertElement(property, type);
081  }
082  
083  private Element convertElement(Property property, Base base) throws FHIRException {
084    if (base == null)
085      return null;
086    String tn = base.fhirType();
087    StructureDefinition sd = context.fetchTypeDefinition(tn);
088    if (sd == null)
089      throw new FHIRException("Unable to find definition for type "+tn);
090    Element res = new Element(property.getName(), property);
091    if (sd.getKind() == StructureDefinitionKind.PRIMITIVETYPE) 
092      res.setValue(((PrimitiveType) base).asStringValue());
093
094    List<ElementDefinition> children = ProfileUtilities.getChildMap(sd, sd.getSnapshot().getElementFirstRep()); 
095    for (ElementDefinition child : children) {
096      String n = tail(child.getPath());
097      if (sd.getKind() != StructureDefinitionKind.PRIMITIVETYPE || !"value".equals(n)) {
098        Base[] values = base.getProperty(n.hashCode(), n, false);
099        if (values != null)
100          for (Base value : values) {
101            res.getChildren().add(convertElement(new Property(context, child, sd), value));
102          }
103      }
104    }
105    return res;
106  }
107
108  private String tail(String path) {
109    if (path.contains("."))
110      return path.substring(path.lastIndexOf('.')+1);
111    else
112      return path;
113  }
114
115  public Type convertToType(Element element) throws FHIRException {
116    Type b = new Factory().create(element.fhirType());
117    if (b instanceof PrimitiveType) {
118      ((PrimitiveType) b).setValueAsString(element.primitiveValue());
119    } else {
120      for (Element child : element.getChildren()) {
121        b.setProperty(child.getName(), convertToType(child));
122      }
123    }
124    return b;
125  }
126
127  public Resource convert(Element element) throws FHIRException {
128    ByteArrayOutputStream bo = new ByteArrayOutputStream();
129    try {
130      new JsonParser(context).compose(element, bo, OutputStyle.NORMAL, null);
131      return new org.hl7.fhir.dstu3.formats.JsonParser().parse(bo.toByteArray());
132    } catch (IOException e) {
133      // won't happen
134      throw new FHIRException(e);
135    }
136    
137  }
138
139  public static CodeableConcept readAsCodeableConcept(Element element) {
140    CodeableConcept cc = new CodeableConcept();
141    List<Element> list = new ArrayList<Element>();
142    element.getNamedChildren("coding", list);
143    for (Element item : list)
144      cc.addCoding(readAsCoding(item));
145    cc.setText(element.getNamedChildValue("text"));
146    return cc;
147  }
148
149  public static Coding readAsCoding(Element item) {
150    Coding c = new Coding();
151    c.setSystem(item.getNamedChildValue("system"));
152    c.setVersion(item.getNamedChildValue("version"));
153    c.setCode(item.getNamedChildValue("code"));
154    c.setDisplay(item.getNamedChildValue("display"));
155    return c;
156  }
157
158  public static Identifier readAsIdentifier(Element item) {
159    Identifier r = new Identifier();
160    r.setSystem(item.getNamedChildValue("system"));
161    r.setValue(item.getNamedChildValue("value"));
162    return r;
163  }
164
165  public static Reference readAsReference(Element item) {
166    Reference r = new Reference();
167    r.setDisplay(item.getNamedChildValue("display"));
168    r.setReference(item.getNamedChildValue("reference"));
169    List<Element> identifier = item.getChildrenByName("identifier");
170    if (identifier.isEmpty() == false) {
171      r.setIdentifier(readAsIdentifier(identifier.get(0)));
172    }
173    return r;
174  }
175
176}