hermes.Domain.java Source code

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Here is the source code for hermes.Domain.java

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/* 
 * Copyright 2003,2004 Colin Crist
 *
 * 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 hermes;

import hermes.browser.IconCache;

import javax.jms.Destination;
import javax.jms.Queue;
import javax.jms.Topic;
import javax.swing.Icon;
import javax.swing.ImageIcon;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.log4j.Logger;

/**
 * A JMS domain object, i.e. a queue or a topic.
 * 
 * @author colincrist@hermesjms.com
 * @version $Id: Domain.java,v 1.10 2006/04/12 13:44:09 colincrist Exp $
 */
public class Domain {
    private static final Logger log = Logger.getLogger(Domain.class);

    /*
     * Domain information for destinations
     */
    public static final Domain QUEUE = new Domain("Queue", 1, IconCache.getIcon("jms.queue"));
    public static final Domain TOPIC = new Domain("Topic", 2, IconCache.getIcon("jms.topic"));
    public static final Domain UNKNOWN = new Domain("Unknown", 3, IconCache.getIcon("jms.queueOrTopic"));
    public static final Object FOLDER = new Domain("Folder", 4, null);
    private String text;
    private int id;
    private Icon icon;

    /**
     *  
     */
    Domain(String text, int id, ImageIcon icon) {
        super();

        this.text = text;
        this.id = id;
        this.icon = icon;
    }

    public Icon getIcon() {
        return icon;
    }

    public int getId() {
        return id;
    }

    public String toString() {
        return text;
    }

    public int hashCode() {
        return text.hashCode();
    }

    public boolean equals(Object other) {
        if (other instanceof Domain) {
            Domain d = (Domain) other;

            return d.getId() == id;
        }

        return false;
    }

    public static Domain getDomain(Destination destination) {
        if (destination instanceof Queue && destination instanceof Topic) {
            //
            // This is an interesting hack to deal with WebLogic as it implements both domains. If we see the object 
            // is somewhere in the WLS JMS packages then see if we can get the "topic" property. We must do this dynamically
            // as it may be loaded in a different class loader (so instanceof will fail) AND we don't want this part of the
            // Hermes codebase to be coupled to any provider.

            if (destination.getClass().getName().startsWith("weblogic.jms")) {
                try {
                    final Boolean isTopic = (Boolean) PropertyUtils.getProperty(destination, "topic");

                    return isTopic ? Domain.TOPIC : Domain.QUEUE;
                } catch (Throwable e) {
                    log.error(e.getMessage(), e);

                    return Domain.UNKNOWN;
                }
            } else {
                return Domain.UNKNOWN;
            }
        } else if (destination instanceof Queue) {
            return Domain.QUEUE;
        } else {
            return Domain.TOPIC;
        }
    }

    public static Domain getDomain(int encoding) {
        if (encoding == 1) {
            return QUEUE;
        } else if (encoding == 2) {
            return TOPIC;
        } else {
            return UNKNOWN;
        }
    }
}