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-rw-r--r--src/org/jivesoftware/smack/filter/AndFilter.java91
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diff --git a/src/org/jivesoftware/smack/filter/AndFilter.java b/src/org/jivesoftware/smack/filter/AndFilter.java
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+/**
+ * $RCSfile$
+ * $Revision$
+ * $Date$
+ *
+ * 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();
+ }
+}