
001package org.hl7.fhir.r5.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 032import java.io.ByteArrayInputStream; 033import java.io.ByteArrayOutputStream; 034import java.io.IOException; 035import java.util.ArrayList; 036import java.util.List; 037 038import org.hl7.fhir.exceptions.FHIRException; 039import org.hl7.fhir.r5.conformance.profile.ProfileUtilities; 040import org.hl7.fhir.r5.conformance.profile.ProfileUtilities.SourcedChildDefinitions; 041import org.hl7.fhir.r5.context.IWorkerContext; 042import org.hl7.fhir.r5.elementmodel.ParserBase.NamedElement; 043import org.hl7.fhir.r5.formats.IParser.OutputStyle; 044import org.hl7.fhir.r5.model.Base; 045import org.hl7.fhir.r5.model.CodeableConcept; 046import org.hl7.fhir.r5.model.Coding; 047import org.hl7.fhir.r5.model.DataType; 048import org.hl7.fhir.r5.model.ElementDefinition; 049import org.hl7.fhir.r5.model.Factory; 050import org.hl7.fhir.r5.model.Identifier; 051import org.hl7.fhir.r5.model.PrimitiveType; 052import org.hl7.fhir.r5.model.Reference; 053import org.hl7.fhir.r5.model.Resource; 054import org.hl7.fhir.r5.model.StructureDefinition; 055import org.hl7.fhir.r5.model.StructureDefinition.StructureDefinitionKind; 056 057 058public class ObjectConverter { 059 060 private IWorkerContext context; 061 private ProfileUtilities profileUtilities; 062 063 public ObjectConverter(IWorkerContext context) { 064 this.context = context; 065 profileUtilities = new ProfileUtilities(context, null, null); 066 } 067 068 public Element convert(Resource ig) throws IOException, FHIRException { 069 if (ig == null) 070 return null; 071 ByteArrayOutputStream bs = new ByteArrayOutputStream(); 072 org.hl7.fhir.r5.formats.JsonParser jp = new org.hl7.fhir.r5.formats.JsonParser(); 073 jp.compose(bs, ig); 074 ByteArrayInputStream bi = new ByteArrayInputStream(bs.toByteArray()); 075 List<NamedElement> list = new JsonParser(context).parse(bi); 076 if (list.size() != 1) { 077 throw new FHIRException("Unable to convert because the source contains multieple resources"); 078 } 079 return list.get(0).getElement(); 080 } 081 082 public Element convert(Property property, DataType type) throws FHIRException { 083 return convertElement(property, type); 084 } 085 086 private Element convertElement(Property property, Base base) throws FHIRException { 087 if (base == null) 088 return null; 089 String tn = base.fhirType(); 090 StructureDefinition sd = context.fetchResource(StructureDefinition.class, ProfileUtilities.sdNs(tn, null)); 091 if (sd == null) 092 throw new FHIRException("Unable to find definition for type "+tn); 093 Element res = new Element(property.getName(), property); 094 if (sd.getKind() == StructureDefinitionKind.PRIMITIVETYPE) 095 res.setValue(((PrimitiveType) base).asStringValue()); 096 097 SourcedChildDefinitions children = profileUtilities.getChildMap(sd, sd.getSnapshot().getElementFirstRep()); 098 for (ElementDefinition child : children.getList()) { 099 String n = tail(child.getPath()); 100 if (sd.getKind() != StructureDefinitionKind.PRIMITIVETYPE || !"value".equals(n)) { 101 Base[] values = base.getProperty(n.hashCode(), n, false); 102 if (values != null) 103 for (Base value : values) { 104 res.getChildren().add(convertElement(new Property(context, child, sd), value)); 105 } 106 } 107 } 108 return res; 109 } 110 111 private String tail(String path) { 112 if (path.contains(".")) 113 return path.substring(path.lastIndexOf('.')+1); 114 else 115 return path; 116 } 117 118 public DataType convertToType(Element element) throws FHIRException { 119 DataType b = new Factory().create(element.fhirType()); 120 if (b instanceof PrimitiveType) { 121 ((PrimitiveType) b).setValueAsString(element.primitiveValue()); 122 } else { 123 for (Element child : element.getChildren()) { 124 b.setProperty(child.getName(), convertToType(child)); 125 } 126 } 127 return b; 128 } 129 130 public Resource convert(Element element) throws FHIRException { 131 ByteArrayOutputStream bo = new ByteArrayOutputStream(); 132 try { 133 new JsonParser(context).compose(element, bo, OutputStyle.NORMAL, null); 134 return new org.hl7.fhir.r5.formats.JsonParser().parse(bo.toByteArray()); 135 } catch (IOException e) { 136 // won't happen 137 throw new FHIRException(e); 138 } 139 140 } 141 142 public static CodeableConcept readAsCodeableConcept(Element element) { 143 if (element == null) { 144 return null; 145 } 146 CodeableConcept cc = new CodeableConcept(); 147 List<Element> list = new ArrayList<Element>(); 148 element.getNamedChildren("coding", list); 149 for (Element item : list) 150 cc.addCoding(readAsCoding(item)); 151 cc.setText(element.getNamedChildValue("text")); 152 return cc; 153 } 154 155 public static Coding readAsCoding(Element item) { 156 Coding c = new Coding(); 157 c.setSystem(item.getNamedChildValue("system")); 158 c.setVersion(item.getNamedChildValue("version")); 159 c.setCode(item.getNamedChildValue("code")); 160 c.setDisplay(item.getNamedChildValue("display")); 161 return c; 162 } 163 164 public static Identifier readAsIdentifier(Element item) { 165 Identifier r = new Identifier(); 166 r.setSystem(item.getNamedChildValue("system")); 167 r.setValue(item.getNamedChildValue("value")); 168 return r; 169 } 170 171 public static Reference readAsReference(Element item) { 172 Reference r = new Reference(); 173 r.setDisplay(item.getNamedChildValue("display")); 174 r.setReference(item.getNamedChildValue("reference")); 175 r.setType(item.getNamedChildValue("type")); 176 if (!r.hasType()) { 177 Element ext = item.getExtension("http://hl7.org/fhir/4.0/StructureDefinition/extension-Reference.type"); 178 if (ext != null) { 179 r.setType(ext.getChildValue("valueUri")); 180 } 181 } 182 List<Element> identifier = item.getChildrenByName("identifier"); 183 if (identifier.isEmpty() == false) { 184 r.setIdentifier(readAsIdentifier(identifier.get(0))); 185 } 186 return r; 187 } 188 189}