FileMessageFactory.java

/* 
 * 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.providers.file;

import hermes.Domain;
import hermes.HermesException;
import hermes.MessageFactory;
import hermes.browser.HermesBrowser;
import hermes.providers.messages.MapMessageImpl;
import hermes.providers.messages.MessageImpl;
import hermes.providers.messages.ObjectMessageImpl;
import hermes.providers.messages.TextMessageImpl;

import java.io.Serializable;

import javax.jms.BytesMessage;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.Message;
import javax.jms.ObjectMessage;
import javax.jms.Queue;
import javax.jms.StreamMessage;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.naming.NamingException;

/**
 * An XML file provider.
 * 
 * @author colincrist@hermesjms.com
 * @version $Id: FileMessageFactory.java,v 1.1 2004/05/01 15:52:35 colincrist
 *          Exp $
 */

public class FileMessageFactory implements MessageFactory {

	private static final String SEPARATOR = System.getProperty("file.separator");

	private String baseDirectory;
	
   
	
	public String getFilename(String file) throws HermesException {
		if (baseDirectory != null) {
			return baseDirectory + SEPARATOR + file;
		} else {
			return HermesBrowser.getBrowser().getConfig().getMessageFilesDir() + SEPARATOR + file;
		}
	}

	public FileMessageFactory(String baseDirectory) {
		this.baseDirectory = baseDirectory;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createBytesMessage()
	 */
	public BytesMessage createBytesMessage() throws JMSException {
		throw new HermesException("BytesMessage not supported");
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createMapMessage()
	 */
	public MapMessage createMapMessage() throws JMSException {
		return new MapMessageImpl();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createObjectMessage()
	 */
	public ObjectMessage createObjectMessage() throws JMSException {
		return new ObjectMessageImpl();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createStreamMessage()
	 */
	public StreamMessage createStreamMessage() throws JMSException {
		throw new HermesException("StreamMessage not supported");
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createTextMessage()
	 */
	public TextMessage createTextMessage() throws JMSException {
		return new TextMessageImpl();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createTextMessage(java.lang.String)
	 */
	public TextMessage createTextMessage(String text) throws JMSException {
		return new TextMessageImpl(text);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createMessage()
	 */
	public Message createMessage() throws JMSException {
		return new MessageImpl();
	}

	public Queue createQueue(String name) throws JMSException {
		return new FileQueue(getFilename(name));
	}

	public Topic createTopic(String topic) throws JMSException {
		return new DummyTopic(topic);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#getDestination(java.lang.String)
	 */
	public Destination getDestination(String name, Domain domain) throws JMSException, NamingException {
		if (domain == Domain.QUEUE) {
			return createQueue(name);
		} else {
			return createTopic(name);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#getDestinationName(javax.jms.Destination)
	 */
	public String getDestinationName(Destination to) throws JMSException {
		if (to instanceof Queue) {
			return ((Queue) to).getQueueName();
		} else {
			return ((Topic) to).getTopicName();
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see hermes.MessageFactory#createObjectMessage(java.io.Serializable)
	 */
	public ObjectMessage createObjectMessage(Serializable object) throws JMSException {
		return new ObjectMessageImpl(object);
	}

}