PacketExtensionFilter


1   /**
2    * $RCSfile$
3    * $Revision: 2408 $
4    * $Date: 2004-11-02 20:53:30 -0300 (Tue, 02 Nov 2004) $
5    *
6    * Copyright 2003-2004 Jive Software.
7    *
8    * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
9    * you may not use this file except in compliance with the License.
10   * You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.jivesoftware.smack.filter;
22  
23  import org.jivesoftware.smack.packet.Packet;
24  
25  /**
26   * Filters for packets with a particular type of packet extension.
27   *
28   * @author Matt Tucker
29   */
30  public class PacketExtensionFilter implements PacketFilter {
31  
32      private String   elementName;
33      private String   namespace;
34  
35      /**
36       * Creates a new packet extension filter. Packets will pass the filter if
37       * they have a packet extension that matches the specified element name
38       * and namespace.
39       *
40       * @param elementName the XML element name of the packet extension.
41       * @param namespace the XML namespace of the packet extension.
42       */
43      public PacketExtensionFilter(String   elementName, String   namespace) {
44          this.elementName = elementName;
45          this.namespace = namespace;
46      }
47  
48      public boolean accept(Packet packet) {
49          return packet.getExtension(elementName, namespace) != null;
50      }
51  }
52

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