001package ca.uhn.fhir.mdm.rules.matcher;
002
003/*-
004 * #%L
005 * HAPI FHIR - 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.context.FhirContext;
024import org.hl7.fhir.instance.model.api.IBase;
025
026public class EmptyFieldMatcher implements IMdmFieldMatcher {
027
028        public EmptyFieldMatcher() {
029        }
030
031        @Override
032        public boolean matches(FhirContext theFhirContext, IBase theLeftBase, IBase theRightBase, boolean theExact, String theIdentifierSystem) {
033                for (IBase b : new IBase[] {theLeftBase, theRightBase}) {
034                        if (b != null && !b.isEmpty()) {
035                                return false;
036                        }
037                }
038                return true;
039        }
040}