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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright 2003-2004 Jive Software.
*
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smack.filter;
import org.jivesoftware.smack.packet.Packet;
/**
* Filters for packets of a particular type. The type is given as a Class object, so
* example types would:
* <ul>
* <li><tt>Message.class</tt>
* <li><tt>IQ.class</tt>
* <li><tt>Presence.class</tt>
* </ul>
*
* @author Matt Tucker
*/
public class PacketTypeFilter implements PacketFilter {
Class packetType;
/**
* Creates a new packet type filter that will filter for packets that are the
* same type as <tt>packetType</tt>.
*
* @param packetType the Class type.
*/
public PacketTypeFilter(Class packetType) {
// Ensure the packet type is a sub-class of Packet.
if (!Packet.class.isAssignableFrom(packetType)) {
throw new IllegalArgumentException("Packet type must be a sub-class of Packet.");
}
this.packetType = packetType;
}
public boolean accept(Packet packet) {
return packetType.isInstance(packet);
}
}
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