| /** |
| * |
| * 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.qpid.server.filter; |
| |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.server.queue.AMQMessage; |
| import org.apache.qpid.server.queue.Filterable; |
| |
| // |
| // Based on like named file from r450141 of the Apache ActiveMQ project <http://www.activemq.org/site/home.html> |
| // |
| |
| /** |
| * Used to evaluate an XQuery Expression in a JMS selector. |
| */ |
| public final class XQueryExpression implements BooleanExpression { |
| private final String xpath; |
| |
| XQueryExpression(String xpath) { |
| super(); |
| this.xpath = xpath; |
| } |
| |
| public Object evaluate(Filterable message) throws AMQException { |
| return Boolean.FALSE; |
| } |
| |
| public String toString() { |
| return "XQUERY "+ConstantExpression.encodeString(xpath); |
| } |
| |
| /** |
| * @param message |
| * @return true if the expression evaluates to Boolean.TRUE. |
| * @throws AMQException |
| */ |
| public boolean matches(Filterable message) throws AMQException |
| { |
| Object object = evaluate(message); |
| return object!=null && object==Boolean.TRUE; |
| } |
| |
| } |