001package ca.uhn.fhir.jpa.mdm.broker;
002
003/*-
004 * #%L
005 * HAPI FHIR JPA Server - Master Data Management
006 * %%
007 * Copyright (C) 2014 - 2022 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.jpa.subscription.api.ISubscriptionMessageKeySvc;
024import ca.uhn.fhir.mdm.model.CanonicalEID;
025import ca.uhn.fhir.mdm.util.EIDHelper;
026import org.hl7.fhir.instance.model.api.IBaseResource;
027import org.springframework.beans.factory.annotation.Autowired;
028import org.springframework.stereotype.Service;
029
030import javax.annotation.Nullable;
031import java.util.List;
032
033@Service
034public class MdmMessageKeySvc implements ISubscriptionMessageKeySvc {
035        @Autowired
036        private EIDHelper myEIDHelper;
037
038        @Nullable
039        @Override
040        public String getMessageKeyOrNull(IBaseResource theTargetResource) {
041                List<CanonicalEID> eidList = myEIDHelper.getExternalEid(theTargetResource);
042                if (eidList.isEmpty()) {
043                        return null;
044                }
045                return eidList.get(0).getValue();
046        }
047}