001/*-
002 * #%L
003 * HAPI FHIR JPA Server - Master Data Management
004 * %%
005 * Copyright (C) 2014 - 2023 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.jpa.mdm.broker;
021
022import ca.uhn.fhir.jpa.subscription.api.ISubscriptionMessageKeySvc;
023import ca.uhn.fhir.mdm.model.CanonicalEID;
024import ca.uhn.fhir.mdm.util.EIDHelper;
025import org.hl7.fhir.instance.model.api.IBaseResource;
026import org.springframework.beans.factory.annotation.Autowired;
027import org.springframework.stereotype.Service;
028
029import java.util.List;
030import javax.annotation.Nullable;
031
032@Service
033public class MdmMessageKeySvc implements ISubscriptionMessageKeySvc {
034        @Autowired
035        private EIDHelper myEIDHelper;
036
037        @Nullable
038        @Override
039        public String getMessageKeyOrNull(IBaseResource theTargetResource) {
040                List<CanonicalEID> eidList = myEIDHelper.getExternalEid(theTargetResource);
041                if (eidList.isEmpty()) {
042                        return null;
043                }
044                return eidList.get(0).getValue();
045        }
046}