001/*-
002 * #%L
003 * HAPI FHIR - Master Data Management
004 * %%
005 * Copyright (C) 2014 - 2024 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.mdm.rules.matcher.fieldmatchers;
021
022import ca.uhn.fhir.mdm.rules.json.MdmMatcherJson;
023import ca.uhn.fhir.mdm.rules.matcher.models.IMdmFieldMatcher;
024import org.hl7.fhir.instance.model.api.IBase;
025
026public class EmptyFieldMatcher implements IMdmFieldMatcher {
027
028        public EmptyFieldMatcher() {}
029
030        @Override
031        public boolean matches(IBase theLeftBase, IBase theRightBase, MdmMatcherJson theParams) {
032                for (IBase b : new IBase[] {theLeftBase, theRightBase}) {
033                        if (b != null && !b.isEmpty()) {
034                                return false;
035                        }
036                }
037                return true;
038        }
039
040        @Override
041        public boolean isMatchingEmptyFields() {
042                return true;
043        }
044}