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;
025import org.hl7.fhir.instance.model.api.IPrimitiveType;
026
027/**
028 * Similarity measure for two IBase fields whose similarity can be measured by their String representations.
029 */
030public class HapiStringMatcher extends BaseHapiStringMetric implements IMdmFieldMatcher {
031        private final IMdmStringMatcher myStringMatcher;
032
033        public HapiStringMatcher(IMdmStringMatcher theStringMatcher) {
034                myStringMatcher = theStringMatcher;
035        }
036
037        public HapiStringMatcher() {
038                myStringMatcher = String::equals;
039        }
040
041        @Override
042        public boolean matches(FhirContext theFhirContext, IBase theLeftBase, IBase theRightBase, boolean theExact, String theIdentifierSystem) {
043                if (theLeftBase instanceof IPrimitiveType && theRightBase instanceof IPrimitiveType) {
044                        String leftString = extractString((IPrimitiveType<?>) theLeftBase, theExact);
045                        String rightString = extractString((IPrimitiveType<?>) theRightBase, theExact);
046
047                        return myStringMatcher.matches(leftString, rightString);
048                }
049                return false;
050        }
051}