001 package jcolibri.method.retrieve.NNretrieval.similarity.local; 002 003 import jcolibri.method.retrieve.NNretrieval.similarity.LocalSimilarityFunction; 004 005 006 /** 007 * This function returns 1 if both individuals are equal, otherwise returns 0 008 */ 009 public class Equal implements LocalSimilarityFunction { 010 011 /** 012 * Applies the similarity function. 013 * 014 * @param o1 015 * Object. 016 * @param o2 017 * Object. 018 * @return the result of apply the similarity function. 019 */ 020 public double compute(Object o1, Object o2) throws jcolibri.exception.NoApplicableSimilarityFunctionException{ 021 if ((o1 == null) || (o2 == null)) 022 return 0; 023 return o1.equals(o2) ? 1 : 0; 024 } 025 026 /** Applicable to any class */ 027 public boolean isApplicable(Object o1, Object o2) 028 { 029 return true; 030 } 031 }