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The source code/* * Sun Public License Notice * * The contents of this file are subject to the Sun Public License * Version 1.0 (the "License"). You may not use this file except in * compliance with the License. A copy of the License is available at * http://www.sun.com/ * * The Original Code is NetBeans. The Initial Developer of the Original * Code is Sun Microsystems, Inc. Portions Copyright 1997-2001 Sun * Microsystems, Inc. All Rights Reserved. */ package org.netbeans.lib.jmi.query; import java.util.Comparator; /** Filters all objects in Query which equals to value. Compers either bu equals() * or by comparator. * * @author Petr Hrebejk */ public class ValueFilter extends FilterQuery { private final Object VALUE; private final Comparator COMPARATOR; /** Only values for which value.equals( object ) == true are included */ public ValueFilter( Query query, Object value ) { this( query, value, null ); } /** Includes objects for which the comaprator.comapre( value, object ) == 0 */ public ValueFilter( Query query, Object value, Comparator comparator ) { super( query ); this.VALUE = value; this.COMPARATOR = comparator; } protected boolean accept( Object object ) { if ( COMPARATOR != null ) { return COMPARATOR.compare( VALUE, object ) == 0; } else { if ( VALUE == null ) { if ( object == null ) { return true; } else { return false; } } else { return VALUE.equals( object ); } } } } |
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