159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/* 259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Copyright (c) 2011 jMonkeyEngine 359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * All rights reserved. 459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Redistribution and use in source and binary forms, with or without 659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * modification, are permitted provided that the following conditions are 759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * met: 859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions of source code must retain the above copyright 1059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer. 1159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions in binary form must reproduce the above copyright 1359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer in the 1459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * documentation and/or other materials provided with the distribution. 1559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 1759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * may be used to endorse or promote products derived from this software 1859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * without specific prior written permission. 1959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 2059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 2459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 2759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 2859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 2959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 3259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapackage com.jme3.network; 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.util.Arrays; 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.util.Collection; 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.util.HashSet; 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Static utility methods pertaining to Filter instances. 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @version $Revision: 8843 $ 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Paul Speed 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class Filters 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta{ 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for any value in the specified 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * list of values and false for all other cases. 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> in( T... values ) 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in( new HashSet<T>(Arrays.asList(values)) ); 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for any value in the specified 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * collection and false for all other cases. 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> in( Collection<? extends T> collection ) 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new InFilter<T>(collection); 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for any value NOT in the specified 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * list of values and false for all other cases. This is the equivalent 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * of calling not(in(values)). 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> notIn( T... values ) 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return not( in( values ) ); 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for any value NOT in the specified 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * collection and false for all other cases. This is the equivalent 7859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * of calling not(in(collection)). 7959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 8059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> notIn( Collection<? extends T> collection ) 8159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 8259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return not( in( collection ) ); 8359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 8659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for inputs that are .equals() 8759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * equivalent to the specified value. 8859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 8959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> equalTo( T value ) 9059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 9159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new EqualToFilter<T>(value); 9259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 9359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 9559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true for inputs that are NOT .equals() 9659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * equivalent to the specified value. This is the equivalent of calling 9759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * not(equalTo(value)). 9859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 9959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> notEqualTo( T value ) 10059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 10159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return not(equalTo(value)); 10259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 10559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a filter that returns true when the specified delegate filter 10659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * returns false, and vice versa. 10759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 10859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static <T> Filter<T> not( Filter<T> f ) 10959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 11059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return new NotFilter<T>(f); 11159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 11259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 11359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private static class EqualToFilter<T> implements Filter<T> 11459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 11559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private T value; 11659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 11759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public EqualToFilter( T value ) 11859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 11959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.value = value; 12059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public boolean apply( T input ) 12359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 12459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return value == input || (value != null && value.equals(input)); 12559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private static class InFilter<T> implements Filter<T> 12959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 13059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Collection<? extends T> collection; 13159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public InFilter( Collection<? extends T> collection ) 13359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 13459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.collection = collection; 13559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public boolean apply( T input ) 13859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 13959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return collection.contains(input); 14059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private static class NotFilter<T> implements Filter<T> 14459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 14559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Filter<T> delegate; 14659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public NotFilter( Filter<T> delegate ) 14859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 14959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.delegate = delegate; 15059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 15159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public boolean apply( T input ) 15359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta { 15459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return !delegate.apply(input); 15559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 15659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 15759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 15859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 160