home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

ActiveMQ example source code file (DestinationFilter.java)

This example ActiveMQ source code file (DestinationFilter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

any_child, any_descendent, booleanexpression, destinationfilter, destinationfilter, io, ioexception, jmsexception, jmsexception, object, object, simpledestinationfilter, string, string, wildcarddestinationfilter

The ActiveMQ DestinationFilter.java source code

/**
 * 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 java.io.IOException;

import javax.jms.JMSException;

import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.util.JMSExceptionSupport;

/**
 * Represents a filter which only operates on Destinations
 * 
 * 
 */
public abstract class DestinationFilter implements BooleanExpression {

    public static final String ANY_DESCENDENT = ">";
    public static final String ANY_CHILD = "*";

    public Object evaluate(MessageEvaluationContext message) throws JMSException {
        return matches(message) ? Boolean.TRUE : Boolean.FALSE;
    }

    public boolean matches(MessageEvaluationContext message) throws JMSException {
        try {
            if (message.isDropped()) {
                return false;
            }
            return matches(message.getMessage().getDestination());
        } catch (IOException e) {
            throw JMSExceptionSupport.create(e);
        }
    }

    public abstract boolean matches(ActiveMQDestination destination);

    public static DestinationFilter parseFilter(ActiveMQDestination destination) {
        if (destination.isComposite()) {
            return new CompositeDestinationFilter(destination);
        }
        String[] paths = DestinationPath.getDestinationPaths(destination);
        int idx = paths.length - 1;
        if (idx >= 0) {
            String lastPath = paths[idx];
            if (lastPath.equals(ANY_DESCENDENT)) {
                return new PrefixDestinationFilter(paths, destination.getDestinationType());
            } else {
                while (idx >= 0) {
                    lastPath = paths[idx--];
                    if (lastPath.equals(ANY_CHILD)) {
                        return new WildcardDestinationFilter(paths, destination.getDestinationType());
                    }
                }
            }
        }

        // if none of the paths contain a wildcard then use equality
        return new SimpleDestinationFilter(destination);
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ DestinationFilter.java source code file:

new blog posts

 

Copyright 1998-2016 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.