
001package ca.uhn.fhir.util; 002 003/*- 004 * #%L 005 * HAPI FHIR - Core Library 006 * %% 007 * Copyright (C) 2014 - 2023 Smile CDR, Inc. 008 * %% 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 * #L% 021 */ 022 023import ca.uhn.fhir.context.BaseRuntimeChildDefinition; 024import ca.uhn.fhir.context.BaseRuntimeElementDefinition; 025import ca.uhn.fhir.context.FhirContext; 026import ca.uhn.fhir.context.FhirVersionEnum; 027import ca.uhn.fhir.context.RuntimeResourceDefinition; 028import org.hl7.fhir.instance.model.api.IBase; 029import org.hl7.fhir.instance.model.api.IBaseBinary; 030import org.hl7.fhir.instance.model.api.IBaseReference; 031import org.hl7.fhir.instance.model.api.IPrimitiveType; 032 033import java.util.List; 034 035public class BinaryUtil { 036 037 private BinaryUtil() { 038 // non instantiable 039 } 040 041 /** 042 * Fetches the base64Binary value of Binary.data (or Binary.content on versions of 043 * FHIR before R4), creating it if it does not already exist. 044 */ 045 @SuppressWarnings("unchecked") 046 public static IPrimitiveType<byte[]> getOrCreateData(FhirContext theContext, IBaseBinary theBinary) { 047 String elementName = "content"; 048 if (theContext.getVersion().getVersion().isEqualOrNewerThan(FhirVersionEnum.R4)) { 049 elementName = "data"; 050 } 051 052 BaseRuntimeChildDefinition entryChild = AttachmentUtil.getChild(theContext, theBinary, elementName); 053 List<IBase> entries = entryChild.getAccessor().getValues(theBinary); 054 return entries 055 .stream() 056 .map(t -> (IPrimitiveType<byte[]>) t) 057 .findFirst() 058 .orElseGet(() -> { 059 IPrimitiveType<byte[]> binary = AttachmentUtil.newPrimitive(theContext, "base64Binary", null); 060 entryChild.getMutator().setValue(theBinary, binary); 061 return binary; 062 }); 063 } 064 065 066 public static IBaseReference getSecurityContext(FhirContext theCtx, IBaseBinary theBinary) { 067 RuntimeResourceDefinition def = theCtx.getResourceDefinition("Binary"); 068 BaseRuntimeChildDefinition child = def.getChildByName("securityContext"); 069 IBaseReference retVal = null; 070 if (child != null) { 071 List<IBase> values = child.getAccessor().getValues(theBinary); 072 if (values.size() > 0) { 073 retVal = (IBaseReference) values.get(0); 074 } 075 } 076 return retVal; 077 } 078 079 public static IBaseBinary newBinary(FhirContext theCtx) { 080 return (IBaseBinary) theCtx.getResourceDefinition("Binary").newInstance(); 081 } 082 083 public static void setSecurityContext(FhirContext theCtx, IBaseBinary theBinary, String theSecurityContext) { 084 RuntimeResourceDefinition def = theCtx.getResourceDefinition("Binary"); 085 BaseRuntimeChildDefinition child = def.getChildByName("securityContext"); 086 087 BaseRuntimeElementDefinition<?> referenceDef = theCtx.getElementDefinition("reference"); 088 IBaseReference reference = (IBaseReference) referenceDef.newInstance(); 089 child.getMutator().addValue(theBinary, reference); 090 091 reference.setReference(theSecurityContext); 092 } 093 094 public static void setData(FhirContext theCtx, IBaseBinary theBinary, byte[] theBytes, String theContentType) { 095 getOrCreateData(theCtx, theBinary).setValue(theBytes); 096 097 String elementName = "contentType"; 098 BaseRuntimeChildDefinition entryChild = AttachmentUtil.getChild(theCtx, theBinary, elementName); 099 List<IBase> entries = entryChild.getAccessor().getValues(theBinary); 100 IPrimitiveType<String> contentTypeElement = entries 101 .stream() 102 .map(t -> (IPrimitiveType<String>) t) 103 .findFirst() 104 .orElseGet(() -> { 105 IPrimitiveType<String> stringType = AttachmentUtil.newPrimitive(theCtx, "code", null); 106 entryChild.getMutator().setValue(theBinary, stringType); 107 return stringType; 108 }); 109 contentTypeElement.setValue(theContentType); 110 111 } 112}