| /** |
| * $RCSfile$ |
| * $Revision$ |
| * $Date$ |
| * |
| * Copyright 2003-2007 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; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| /** |
| * Implements the logical AND operation over two or more packet filters. |
| * In other words, packets pass this filter if they pass <b>all</b> of the filters. |
| * |
| * @author Matt Tucker |
| */ |
| public class AndFilter implements PacketFilter { |
| |
| /** |
| * The list of filters. |
| */ |
| private List<PacketFilter> filters = new ArrayList<PacketFilter>(); |
| |
| /** |
| * Creates an empty AND filter. Filters should be added using the |
| * {@link #addFilter(PacketFilter)} method. |
| */ |
| public AndFilter() { |
| |
| } |
| |
| /** |
| * Creates an AND filter using the specified filters. |
| * |
| * @param filters the filters to add. |
| */ |
| public AndFilter(PacketFilter... filters) { |
| if (filters == null) { |
| throw new IllegalArgumentException("Parameter cannot be null."); |
| } |
| for(PacketFilter filter : filters) { |
| if(filter == null) { |
| throw new IllegalArgumentException("Parameter cannot be null."); |
| } |
| this.filters.add(filter); |
| } |
| } |
| |
| /** |
| * Adds a filter to the filter list for the AND operation. A packet |
| * will pass the filter if all of the filters in the list accept it. |
| * |
| * @param filter a filter to add to the filter list. |
| */ |
| public void addFilter(PacketFilter filter) { |
| if (filter == null) { |
| throw new IllegalArgumentException("Parameter cannot be null."); |
| } |
| filters.add(filter); |
| } |
| |
| public boolean accept(Packet packet) { |
| for (PacketFilter filter : filters) { |
| if (!filter.accept(packet)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public String toString() { |
| return filters.toString(); |
| } |
| } |