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Diffstat (limited to 'src/org/jivesoftware/smack/filter/AndFilter.java')
-rw-r--r-- | src/org/jivesoftware/smack/filter/AndFilter.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smack/filter/AndFilter.java b/src/org/jivesoftware/smack/filter/AndFilter.java new file mode 100644 index 0000000..847b618 --- /dev/null +++ b/src/org/jivesoftware/smack/filter/AndFilter.java @@ -0,0 +1,91 @@ +/** + * $RCSfile$ + * $Revision$ + * $Date$ + * + * 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(); + } +} |