001 /** 002 * Equal.java 003 * jCOLIBRI2 framework. 004 * @author Juan A. Recio-García. 005 * GAIA - Group for Artificial Intelligence Applications 006 * http://gaia.fdi.ucm.es 007 * 28/10/2007 008 */ 009 package jcolibri.method.retrieve.FilterBasedRetrieval.predicates; 010 011 import jcolibri.exception.NoApplicableFilterPredicateException; 012 013 /** 014 * Predicate that compares if two objects are different. 015 * @author Juan A. Recio-Garcia 016 * @author Developed at University College Cork (Ireland) in collaboration with Derek Bridge. 017 * @version 1.0 018 * @see jcolibri.method.retrieve.FilterBasedRetrieval.FilterBasedRetrievalMethod 019 * @see jcolibri.method.retrieve.FilterBasedRetrieval.FilterConfig 020 */ 021 public class NotEqual implements FilterPredicate 022 { 023 public boolean compute(Object caseObject, Object queryObject) throws NoApplicableFilterPredicateException 024 { 025 if((caseObject == null)&&(queryObject==null)) 026 return false; 027 else if(caseObject == null) 028 return false; 029 else if(queryObject == null) 030 return true; 031 else 032 return !caseObject.equals(queryObject); 033 } 034 035 }