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Basic useful filter implementations.

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7031 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
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PSp..om 2011-03-19 03:00:06 +00:00
parent fd62579bf3
commit 8fc15d2ecf
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157
engine/src/networking/com/jme3/network/Filters.java Normal file
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@ -0,0 +1,157 @@
/*
* Copyright (c) 2011 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.network;
import java.util.*;
/**
* Static utility methods pertaining to Filter instances.
*
* @version $Revision$
* @author Paul Speed
*/
public class Filters
{
/**
* Creates a filter that returns true for any value in the specified
* list of values and false for all other cases.
*/
public <T> Filter<T> in( T... values )
{
return in( new HashSet<T>(Arrays.asList(values)) );
}
/**
* Creates a filter that returns true for any value in the specified
* collection and false for all other cases.
*/
public <T> Filter<T> in( Collection<? extends T> collection )
{
return new InFilter<T>(collection);
}
/**
* Creates a filter that returns true for any value NOT in the specified
* list of values and false for all other cases. This is the equivalent
* of calling not(in(values)).
*/
public <T> Filter<T> notIn( T... values )
{
return not( in( values ) );
}
/**
* Creates a filter that returns true for any value NOT in the specified
* collection and false for all other cases. This is the equivalent
* of calling not(in(collection)).
*/
public <T> Filter<T> notIn( Collection<? extends T> collection )
{
return not( in( collection ) );
}
/**
* Creates a filter that returns true for inputs that are .equals()
* equivalent to the specified value.
*/
public <T> Filter<T> equalTo( T value )
{
return new EqualToFilter<T>(value);
}
/**
* Creates a filter that returns true for inputs that are NOT .equals()
* equivalent to the specified value. This is the equivalent of calling
* not(equalTo(value)).
*/
public <T> Filter<T> notEqualTo( T value )
{
return not(equalTo(value));
}
/**
* Creates a filter that returns true when the specified delegate filter
* returns false, and vice versa.
*/
public <T> Filter<T> not( Filter<T> f )
{
return new NotFilter<T>(f);
}
private static class EqualToFilter<T> implements Filter<T>
{
private T value;
public EqualToFilter( T value )
{
this.value = value;
}
public boolean apply( T input )
{
return value == input || (value != null && value.equals(input));
}
}
private static class InFilter<T> implements Filter<T>
{
private Collection<? extends T> collection;
public InFilter( Collection<? extends T> collection )
{
this.collection = collection;
}
public boolean apply( T input )
{
return collection.contains(input);
}
}
private static class NotFilter<T> implements Filter<T>
{
private Filter<T> delegate;
public NotFilter( Filter<T> delegate )
{
this.delegate = delegate;
}
public boolean apply( T input )
{
return !delegate.apply(input);
}
}
}

8
engine/src/networking/com/jme3/network/Server.java
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@ -53,6 +53,14 @@ public interface Server
* the filter. If no filter is specified then this is the same as * the filter. If no filter is specified then this is the same as
* calling broadcast(message) and the message will be delivered to * calling broadcast(message) and the message will be delivered to
* all connections. * all connections.
* <p>Examples:</p>
* <pre>
* // Broadcast to connections: conn1, conn2, and conn3
* server.broadcast( Filters.in( conn1, conn2, conn3 ), message );
*
* // Broadcast to all connections exception source
* server.broadcast( Filters.notEqualTo( source ), message );
* </pre>
*/ */
public void broadcast( Filter<? super HostedConnection> filter, Message message ); public void broadcast( Filter<? super HostedConnection> filter, Message message );