001package org.hl7.fhir.convertors.loaders.loaderR4;
002
003import java.io.IOException;
004import java.io.InputStream;
005import java.util.ArrayList;
006import java.util.List;
007import java.util.UUID;
008
009/*
010  Copyright (c) 2011+, HL7, Inc.
011  All rights reserved.
012  
013  Redistribution and use in source and binary forms, with or without modification, 
014  are permitted provided that the following conditions are met:
015    
016   * Redistributions of source code must retain the above copyright notice, this 
017     list of conditions and the following disclaimer.
018   * Redistributions in binary form must reproduce the above copyright notice, 
019     this list of conditions and the following disclaimer in the documentation 
020     and/or other materials provided with the distribution.
021   * Neither the name of HL7 nor the names of its contributors may be used to 
022     endorse or promote products derived from this software without specific 
023     prior written permission.
024  
025  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
026  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
027  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
028  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
029  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
030  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
031  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
032  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
033  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
034  POSSIBILITY OF SUCH DAMAGE.
035  
036 */
037
038
039import org.hl7.fhir.convertors.advisors.impl.BaseAdvisor_30_40;
040import org.hl7.fhir.convertors.factory.VersionConvertorFactory_30_40;
041import org.hl7.fhir.dstu3.formats.JsonParser;
042import org.hl7.fhir.dstu3.formats.XmlParser;
043import org.hl7.fhir.dstu3.model.Resource;
044import org.hl7.fhir.exceptions.FHIRException;
045import org.hl7.fhir.r4.context.SimpleWorkerContext.IContextResourceLoader;
046import org.hl7.fhir.r4.model.Bundle;
047import org.hl7.fhir.r4.model.Bundle.BundleEntryComponent;
048import org.hl7.fhir.r4.model.Bundle.BundleType;
049import org.hl7.fhir.r4.model.CanonicalType;
050import org.hl7.fhir.r4.model.CodeSystem;
051import org.hl7.fhir.r4.model.ElementDefinition;
052import org.hl7.fhir.r4.model.ElementDefinition.TypeRefComponent;
053import org.hl7.fhir.r4.model.MetadataResource;
054import org.hl7.fhir.r4.model.StructureDefinition;
055import org.hl7.fhir.r4.model.StructureDefinition.StructureDefinitionKind;
056import org.hl7.fhir.r5.utils.ToolingExtensions;
057import org.hl7.fhir.r4.model.UriType;
058
059public class R3ToR4Loader extends BaseLoaderR4 implements IContextResourceLoader {
060
061  private final BaseAdvisor_30_40 advisor = new BaseAdvisor_30_40();
062
063  public R3ToR4Loader() {
064    super(new String[0], new NullLoaderKnowledgeProviderR4());
065  }
066
067  @Override
068  public Bundle loadBundle(InputStream stream, boolean isJson) throws FHIRException, IOException {
069    Resource r3 = null;
070    if (isJson)
071      r3 = new JsonParser().parse(stream);
072    else
073      r3 = new XmlParser().parse(stream);
074    org.hl7.fhir.r4.model.Resource r4 = VersionConvertorFactory_30_40.convertResource(r3, advisor);
075
076    Bundle b;
077    if (r4 instanceof Bundle)
078      b = (Bundle) r4;
079    else {
080      b = new Bundle();
081      b.setId(UUID.randomUUID().toString().toLowerCase());
082      b.setType(BundleType.COLLECTION);
083      b.addEntry().setResource(r4).setFullUrl(r4 instanceof MetadataResource ? ((MetadataResource) r4).getUrl() : null);
084    }
085    for (CodeSystem cs : advisor.getCslist()) {
086      BundleEntryComponent be = b.addEntry();
087      be.setFullUrl(cs.getUrl());
088      be.setResource(cs);
089    }
090    if (killPrimitives) {
091      List<BundleEntryComponent> remove = new ArrayList<BundleEntryComponent>();
092      for (BundleEntryComponent be : b.getEntry()) {
093        if (be.hasResource() && be.getResource() instanceof StructureDefinition) {
094          StructureDefinition sd = (StructureDefinition) be.getResource();
095          if (sd.getKind() == StructureDefinitionKind.PRIMITIVETYPE)
096            remove.add(be);
097        }
098      }
099      b.getEntry().removeAll(remove);
100    }
101    if (patchUrls) {
102      for (BundleEntryComponent be : b.getEntry()) {
103        if (be.hasResource() && be.getResource() instanceof StructureDefinition) {
104          StructureDefinition sd = (StructureDefinition) be.getResource();
105          sd.setUrl(sd.getUrl().replace(URL_BASE, URL_DSTU3));
106          sd.addExtension().setUrl(ToolingExtensions.EXT_XML_NAMESPACE).setValue(new UriType(URL_BASE));
107          for (ElementDefinition ed : sd.getSnapshot().getElement())
108            patchUrl(ed);
109          for (ElementDefinition ed : sd.getDifferential().getElement())
110            patchUrl(ed);
111        }
112      }
113    }
114    return b;
115  }
116
117  private void patchUrl(ElementDefinition ed) {
118    for (TypeRefComponent tr : ed.getType()) {
119      for (CanonicalType s : tr.getTargetProfile()) {
120        s.setValue(s.getValue().replace(URL_BASE, URL_DSTU3));
121      }
122      for (CanonicalType s : tr.getProfile()) {
123        s.setValue(s.getValue().replace(URL_BASE, URL_DSTU3));
124      }
125    }
126  }
127}