Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /** |
| 2 | * $RCSfile$ |
| 3 | * $Revision$ |
| 4 | * $Date$ |
| 5 | * |
| 6 | * Copyright 2003-2007 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 | /** |
| 49 | * Creates a new packet extension filter. Packets will pass the filter if they have a packet |
| 50 | * extension that matches the specified namespace. |
| 51 | * |
| 52 | * @param namespace the XML namespace of the packet extension. |
| 53 | */ |
| 54 | public PacketExtensionFilter(String namespace) { |
| 55 | this(null, namespace); |
| 56 | } |
| 57 | |
| 58 | public boolean accept(Packet packet) { |
| 59 | return packet.getExtension(elementName, namespace) != null; |
| 60 | } |
| 61 | } |