1 /* 2 * Copyright 2016 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.openehealth.ipf.commons.ihe.fhir.translation; 18 19 import java.util.Optional; 20 import java.util.function.Supplier; 21 import java.util.stream.Stream; 22 23 /** 24 * <p> 25 * The FHIR Identifier type introduces a new mechanism for conveying the originating system of a particular identifier. 26 * Whereas HL7-based messages identify an assigning organization as a HD or an OID in the 'root' 27 * attribute respectively, HL7 FHIR permits the use of a URI. This requires some configuration on the part of actors 28 * to correctly map a URI to an OID or HD to maintain consistency with other actors which are not implementing the 29 * FHIR specification. 30 * </p> 31 * <p> 32 * The same is basically true for code system identifications. HL7 FHIR permits the use of a URI, whereas 33 * HL7-based messages and requests use HD or OIDs. 34 * </p> 35 * 36 * @author Christian Ohr 37 * @since 3.1 38 */ 39 public interface UriMapper { 40 41 /** 42 * Translates an URI into an OID. If the URI is an (OID) URN, the namespace-specific part should, 43 * be used as the OID. 44 * 45 * @param uri the URI 46 * @return the mapped OID 47 * @throws InvalidUriSyntaxException if the uri string is no valid URI 48 */ 49 Optional<String> uriToOid(String uri); 50 51 /** 52 * Translates an URI into a Namespace. 53 * 54 * @param uri the URI 55 * @return the mapped namespace 56 * @throws InvalidUriSyntaxException if the uri string is no valid URI 57 */ 58 Optional<String> uriToNamespace(String uri); 59 60 /** 61 * Translates an OID into an URI. Instead of a real mapping, an URN can be derived from the OID 62 * (i.e. urn:oid:1.2.3.4), but in general the inverse mapping to {@link #uriToOid(String)} should 63 * be applied. 64 * 65 * @param oid the OID 66 * @return the mapped URI 67 * @throws InvalidUriSyntaxException 68 */ 69 String oidToUri(String oid); 70 71 /** 72 * Translates an Namespace into an URI. Instead of a real mapping, an URN can be derived from the namespace 73 * (i.e. urn:pin:namespace), but in general the inverse mapping to {@link #uriToNamespace(String)} (String)} should 74 * be applied. 75 * 76 * @param namespace the namespace 77 * @return the mapped URI 78 * @throws InvalidUriSyntaxException 79 */ 80 String namespaceToUri(String namespace); 81 82 83 static <T> Optional<T> findFirst(Supplier<Optional<T>>... suppliers) { 84 return Stream.of(suppliers) 85 .map(Supplier::get) 86 .filter(Optional::isPresent) 87 .map(Optional::get) 88 .findFirst(); 89 } 90 91 }