destinationimpl.java

实现了Jms的服务器源码,支持多种适配器,DB,FTP,支持多种数据库

/**
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright
 *    statements and notices.  Redistributions must also contain a
 *    copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the
 *    above copyright notice, this list of conditions and the
 *    following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote
 *    products derived from this Software without prior written
 *    permission of Exoffice Technologies.  For written permission,
 *    please contact [e-mail].
 *
 * 4. Products derived from this Software may not be called "Exolab"
 *    nor may "Exolab" appear in their names without prior written
 *    permission of Exoffice Technologies. Exolab is a registered
 *    trademark of Exoffice Technologies.
 *
 * 5. Due credit should be given to the Exolab Project
 *    (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2000-2003 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: DestinationImpl.java,v 1.7 2003/08/17 01:32:24 tanderson Exp $
 *
 * Date         Author  Changes
 * 02/26/2000   jimm    Created
 */

package org.exolab.jms.message;


import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import javax.jms.Destination;


/** 
 * Implementation of the {@link javax.jms.Destination} interface.
 *
 * @version     $Revision: 1.7 $ $Date: 2003/08/17 01:32:24 $
 * @author      <a href="mailto:[e-mail]">Jim Mourikis</a>
 * @see         javax.jms.Destination
 */
public class DestinationImpl
    implements Cloneable, Destination, Externalizable {

    // Version Id used for streaming
    static final long serialVersionUID = 1;

    /**
     * The destination name
     */
    private String address_ = null;

    public DestinationImpl() {
    }

    public DestinationImpl(String destination) {
        address_ = destination;
    }

    // Marshall out
    public void writeExternal(ObjectOutput out) throws IOException {
        out.writeLong(serialVersionUID);
        out.writeInt(address_.length());
        out.writeChars(address_);
    }


    // Marshall in
    public void readExternal(ObjectInput in)
        throws IOException, ClassNotFoundException {
        long version = in.readLong();
        if (version == serialVersionUID) {
            int len = in.readInt();
            int i;
            StringBuffer buf = new StringBuffer(len);
            for (i = 0; i < len; i++) {
                buf.append(in.readChar());
            }
            address_ = buf.toString();
        } else {
            throw new IOException("Incorrect version enountered: " +
                version + " This version = " +
                serialVersionUID);
        }
    }

    public String getDestination() {
        return address_;
    }


    /** Return a pretty printed version of the topic name.
     *
     * @return the provider specific identity values for this topic.
     */
    public String toString() {
        return "Topic name: " + (address_ == null ? "NONE" : address_);
    }

    // Comparisons
    public boolean isEqual(DestinationImpl toCompare) {
        return (address_.equals(toCompare.address_));
    }

    // implementation of Object.clone
    public Object clone()
        throws CloneNotSupportedException {
        return super.clone();
    }
}