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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.activemq.filter;
import org.apache.activemq.command.ActiveMQDestination;
/**
* Matches messages which match a prefix like "A.B.>"
*
*
*/
public class PrefixDestinationFilter extends DestinationFilter {
private String[] prefixes;
private byte destinationType;
/**
* An array of paths, the last path is '>'
*
* @param prefixes
*/
public PrefixDestinationFilter(String[] prefixes, byte destinationType) {
// collapse duplicate '>' at the end of the path
int lastIndex = prefixes.length - 1;
while (lastIndex >= 0 && ANY_DESCENDENT.equals(prefixes[lastIndex])) {
lastIndex--;
}
this.prefixes = new String[lastIndex + 2];
System.arraycopy(prefixes, 0, this.prefixes, 0, this.prefixes.length);
this.destinationType = destinationType;
}
public boolean matches(ActiveMQDestination destination) {
if (destination.getDestinationType() != destinationType) return false;
String[] path = DestinationPath.getDestinationPaths(destination.getPhysicalName());
int length = prefixes.length;
if (path.length >= length) {
int size = length - 1;
for (int i = 0; i < size; i++) {
if (!matches(prefixes[i],path[i])) {
return false;
}
}
return true;
}else{
//want to look for the case where A matches A.>
boolean match = true;
for (int i = 0; (i < path.length && match); i++){
match = matches(prefixes[i], path[i]);
}
//paths get compacted - e.g. A.*.> will be compacted to A.> and by definition - the last element on
//the prefix will be >
if (match && prefixes.length == (path.length + 1)) {
return true;
}
}
return false;
}
private boolean matches(String prefix,String path){
return path.equals(ANY_CHILD) || prefix.equals(ANY_CHILD) || prefix.equals(path);
}
public String getText() {
return DestinationPath.toString(prefixes);
}
public String toString() {
return super.toString() + "[destination: " + getText() + "]";
}
public boolean isWildcard() {
return true;
}
}