ca.uhn.fhir.mdm.rules.matcher.fieldmatchers.EmptyFieldMatcher Maven / Gradle / Ivy

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/*-
 * #%L
 * HAPI FHIR - Master Data Management
 * %%
 * Copyright (C) 2014 - 2024 Smile CDR, Inc.
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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 */
package ca.uhn.fhir.mdm.rules.matcher.fieldmatchers;

import ca.uhn.fhir.mdm.rules.json.MdmMatcherJson;
import ca.uhn.fhir.mdm.rules.matcher.models.IMdmFieldMatcher;
import org.hl7.fhir.instance.model.api.IBase;

public class EmptyFieldMatcher implements IMdmFieldMatcher {

	public EmptyFieldMatcher() {}

	@Override
	public boolean matches(IBase theLeftBase, IBase theRightBase, MdmMatcherJson theParams) {
		for (IBase b : new IBase[] {theLeftBase, theRightBase}) {
			if (b != null && !b.isEmpty()) {
				return false;
			}
		}
		return true;
	}

	@Override
	public boolean isMatchingEmptyFields() {
		return true;
	}
}