001package org.hl7.fhir.r4.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.r4.conformance.ProfileUtilities; 040import org.hl7.fhir.r4.context.IWorkerContext; 041import org.hl7.fhir.r4.formats.IParser.OutputStyle; 042import org.hl7.fhir.r4.model.Base; 043import org.hl7.fhir.r4.model.CodeableConcept; 044import org.hl7.fhir.r4.model.Coding; 045import org.hl7.fhir.r4.model.ElementDefinition; 046import org.hl7.fhir.r4.model.Factory; 047import org.hl7.fhir.r4.model.Identifier; 048import org.hl7.fhir.r4.model.PrimitiveType; 049import org.hl7.fhir.r4.model.Reference; 050import org.hl7.fhir.r4.model.Resource; 051import org.hl7.fhir.r4.model.StructureDefinition; 052import org.hl7.fhir.r4.model.StructureDefinition.StructureDefinitionKind; 053import org.hl7.fhir.r4.model.Type; 054 055public class ObjectConverter { 056 057 private IWorkerContext context; 058 059 public ObjectConverter(IWorkerContext context) { 060 this.context = context; 061 } 062 063 public Element convert(Resource ig) throws IOException, FHIRException { 064 if (ig == null) 065 return null; 066 ByteArrayOutputStream bs = new ByteArrayOutputStream(); 067 org.hl7.fhir.r4.formats.JsonParser jp = new org.hl7.fhir.r4.formats.JsonParser(); 068 jp.compose(bs, ig); 069 ByteArrayInputStream bi = new ByteArrayInputStream(bs.toByteArray()); 070 return new JsonParser(context).parse(bi); 071 } 072 073 public Element convert(Property property, Type type) throws FHIRException { 074 return convertElement(property, type); 075 } 076 077 private Element convertElement(Property property, Base base) throws FHIRException { 078 if (base == null) 079 return null; 080 String tn = base.fhirType(); 081 StructureDefinition sd = context.fetchResource(StructureDefinition.class, 082 ProfileUtilities.sdNs(tn, context.getOverrideVersionNs())); 083 if (sd == null) 084 throw new FHIRException("Unable to find definition for type " + tn); 085 Element res = new Element(property.getName(), property); 086 if (sd.getKind() == StructureDefinitionKind.PRIMITIVETYPE) 087 res.setValue(((PrimitiveType) base).asStringValue()); 088 089 List<ElementDefinition> children = ProfileUtilities.getChildMap(sd, sd.getSnapshot().getElementFirstRep()); 090 for (ElementDefinition child : children) { 091 String n = tail(child.getPath()); 092 if (sd.getKind() != StructureDefinitionKind.PRIMITIVETYPE || !"value".equals(n)) { 093 Base[] values = base.getProperty(n.hashCode(), n, false); 094 if (values != null) 095 for (Base value : values) { 096 res.getChildren().add(convertElement(new Property(context, child, sd), value)); 097 } 098 } 099 } 100 return res; 101 } 102 103 private String tail(String path) { 104 if (path.contains(".")) 105 return path.substring(path.lastIndexOf('.') + 1); 106 else 107 return path; 108 } 109 110 public Type convertToType(Element element) throws FHIRException { 111 Type b = new Factory().create(element.fhirType()); 112 if (b instanceof PrimitiveType) { 113 ((PrimitiveType) b).setValueAsString(element.primitiveValue()); 114 } else { 115 for (Element child : element.getChildren()) { 116 b.setProperty(child.getName(), convertToType(child)); 117 } 118 } 119 return b; 120 } 121 122 public Resource convert(Element element) throws FHIRException { 123 ByteArrayOutputStream bo = new ByteArrayOutputStream(); 124 try { 125 new JsonParser(context).compose(element, bo, OutputStyle.NORMAL, null); 126// TextFile.bytesToFile(bo.toByteArray(), Utilities.path("[tmp]", "json.json"); 127 return new org.hl7.fhir.r4.formats.JsonParser().parse(bo.toByteArray()); 128 } catch (IOException e) { 129 // won't happen 130 throw new FHIRException(e); 131 } 132 133 } 134 135 public static CodeableConcept readAsCodeableConcept(Element element) { 136 CodeableConcept cc = new CodeableConcept(); 137 List<Element> list = new ArrayList<Element>(); 138 element.getNamedChildren("coding", list); 139 for (Element item : list) 140 cc.addCoding(readAsCoding(item)); 141 cc.setText(element.getNamedChildValue("text")); 142 return cc; 143 } 144 145 public static Coding readAsCoding(Element item) { 146 Coding c = new Coding(); 147 c.setSystem(item.getNamedChildValue("system")); 148 c.setVersion(item.getNamedChildValue("version")); 149 c.setCode(item.getNamedChildValue("code")); 150 c.setDisplay(item.getNamedChildValue("display")); 151 return c; 152 } 153 154 public static Identifier readAsIdentifier(Element item) { 155 Identifier r = new Identifier(); 156 r.setSystem(item.getNamedChildValue("system")); 157 r.setValue(item.getNamedChildValue("value")); 158 return r; 159 } 160 161 public static Reference readAsReference(Element item) { 162 Reference r = new Reference(); 163 r.setDisplay(item.getNamedChildValue("display")); 164 r.setReference(item.getNamedChildValue("reference")); 165 r.setType(item.getNamedChildValue("type")); 166 List<Element> identifier = item.getChildrenByName("identifier"); 167 if (identifier.isEmpty() == false) { 168 r.setIdentifier(readAsIdentifier(identifier.get(0))); 169 } 170 return r; 171 } 172 173}