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.similarity;
021
022import ca.uhn.fhir.context.FhirContext;
023import ca.uhn.fhir.context.phonetic.NumericEncoder;
024import ca.uhn.fhir.mdm.rules.matcher.util.StringMatcherUtils;
025import info.debatty.java.stringsimilarity.interfaces.NormalizedStringSimilarity;
026import org.hl7.fhir.instance.model.api.IBase;
027import org.hl7.fhir.instance.model.api.IPrimitiveType;
028
029public class HapiNumericSimilarity extends HapiStringSimilarity {
030        private final NumericEncoder encoder = new NumericEncoder();
031
032        public HapiNumericSimilarity(NormalizedStringSimilarity theStringSimilarity) {
033                super(theStringSimilarity);
034        }
035
036        @Override
037        public double similarity(FhirContext theFhirContext, IBase theLeftBase, IBase theRightBase, boolean theExact) {
038
039                if (theLeftBase instanceof IPrimitiveType && theRightBase instanceof IPrimitiveType) {
040                        String leftString =
041                                        encoder.encode(StringMatcherUtils.extractString((IPrimitiveType<?>) theLeftBase, theExact));
042                        String rightString =
043                                        encoder.encode(StringMatcherUtils.extractString((IPrimitiveType<?>) theRightBase, theExact));
044
045                        return myStringSimilarity.similarity(leftString, rightString);
046                }
047                return 0.0;
048        }
049}