messageimpl.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 893 行 · 第 1/2 页

/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.jms.message;

import com.caucho.jms.connection.JmsSession;
import com.caucho.hessian.io.*;
import com.caucho.vfs.*;
import com.caucho.util.*;

import javax.jms.*;
import java.lang.ref.WeakReference;
import java.io.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * A basic message.
 */
public class MessageImpl implements Message, java.io.Serializable
{
  protected static final Logger log
    = Logger.getLogger(MessageImpl.class.getName());
  protected static final L10N L = new L10N(MessageImpl.class);

  private static final HashSet<String> _reserved;

  private volatile WeakReference<JmsSession> _sessionRef;
  
  private String _messageId;
  private String _correlationId;
  
  private long _timestamp;
  private long _expiration;
  
  private Destination _destination;
  private Destination _replyTo;

  private int _deliveryMode = DeliveryMode.PERSISTENT;
  private boolean _isRedelivered;

  private String _messageType;
  private int _priority = 4;

  private long _sequence;

  private HashMap<String,Object> _properties;
  
  private transient boolean _isHeaderWriteable = true;
  private transient boolean _isBodyWriteable = true;

  public MessageImpl()
  {
  }

  /**
   * Create a message, copying the properties
   */
  public MessageImpl(Message msg)
    throws JMSException
  {
    _messageId = msg.getJMSMessageID();
    _correlationId = msg.getJMSCorrelationID();
    
    _timestamp = msg.getJMSTimestamp();
    _expiration = msg.getJMSExpiration();
    
    _destination = msg.getJMSDestination();
    _replyTo = msg.getJMSReplyTo();

    _deliveryMode = msg.getJMSDeliveryMode();
    _isRedelivered = msg.getJMSRedelivered();
    
    _messageType = msg.getJMSType();
    _priority = msg.getJMSPriority();
    
    Enumeration e = msg.getPropertyNames();

    while (e.hasMoreElements()) {
      String name = (String) e.nextElement();

      setObjectProperty(name, msg.getObjectProperty(name));
    }

    _isHeaderWriteable = false;
    _isBodyWriteable = false;
  }
  
  public MessageImpl(MessageImpl msg)
  {
    if (msg._properties != null) {
      _properties = new HashMap<String,Object>(msg._properties);
    }

    _messageId = msg._messageId;
    _correlationId = msg._correlationId;
    
    _timestamp = msg._timestamp;
    _expiration = msg._expiration;
    
    _destination = msg._destination;
    _replyTo = msg._replyTo;

    _deliveryMode = msg._deliveryMode;
    _isRedelivered = msg._isRedelivered;
    
    _messageType = msg._messageType;
    _priority = msg._priority;
    
    _isHeaderWriteable = false;
    _isBodyWriteable = false;
  }

  /**
   * Sets the session.
   */
  public void setSession(JmsSession session)
  {
    _sessionRef = new WeakReference<JmsSession>(session);
  }

  /**
   * Returns the type enumeration.
   */
  public MessageType getType()
  {
    return MessageType.NULL;
  }

  /**
   * Returns the message id.
   */
  public String getJMSMessageID()
  {
    return _messageId;
  }

  /**
   * Sets the message id.
   *
   * @param id the new message id
   */
  public void setJMSMessageID(String id)
  {
    _messageId = id;
  }

  /**
   * Returns the time the message was sent.
   */
  public long getJMSTimestamp()
    throws JMSException
  {
    return _timestamp;
  }

  /**
   * Sets the time the message was sent.
   *
   * @param time the message timestamp
   */
  public void setJMSTimestamp(long time)
    throws JMSException
  {
    _timestamp = time;
  }

  /**
   * Returns the correlation id.
   */
  public byte []getJMSCorrelationIDAsBytes()
    throws JMSException
  {
    try {
      if (_correlationId == null)
        return null;
      else
        return _correlationId.getBytes("UTF8");
    } catch (Throwable e) {
      log.log(Level.WARNING, e.toString(), e);
      
      return null;
    }
  }

  /**
   * Sets the correlation id.
   *
   * @param id the correlation id
   */
  public void setJMSCorrelationIDAsBytes(byte []id)
    throws JMSException
  {
    try {
      _correlationId = new String(id, 0, id.length, "UTF8");
    } catch (Exception e) {
      log.log(Level.WARNING, e.toString(), e);
    }
  }

  /**
   * Returns the correlation id.
   */
  public String getJMSCorrelationID()
    throws JMSException
  {
    return _correlationId;
  }

  /**
   * Sets the correlation id.
   *
   * @param id the correlation id
   */
  public void setJMSCorrelationID(String id)
    throws JMSException
  {
    _correlationId = id;
  }

  /**
   * Gets the reply-to destination
   */
  public Destination getJMSReplyTo()
    throws JMSException
  {
    return _replyTo;
  }

  /**
   * Sets the reply-to destination
   *
   * @param replyTo the destination
   */
  public void setJMSReplyTo(Destination replyTo)
    throws JMSException
  {
    _replyTo = replyTo;
  }

  /**
   * Gets the destination
   */
  public Destination getJMSDestination()
    throws JMSException
  {
    return _destination;
  }

  /**
   * Sets the reply-to destination
   *
   * @param destination the destination
   */
  public void setJMSDestination(Destination destination)
    throws JMSException
  {
    _destination = destination;
  }

  /**
   * Gets the delivery model
   */
  public int getJMSDeliveryMode()
    throws JMSException
  {
    return _deliveryMode;
  }

  /**
   * Sets the delivery mode
   *
   * @param deliveryMode the delivery mode
   */
  public void setJMSDeliveryMode(int deliveryMode)
    throws JMSException
  {
    _deliveryMode = deliveryMode;
  }

  /**
   * Returns if the message is being redelivered.
   */
  public boolean getJMSRedelivered()
  {
    return _isRedelivered;
  }

  /**
   * Sets if the message is being redelivered.
   *
   * @param deliveryMode the delivery mode
   */
  public void setJMSRedelivered(boolean isRedelivered)
  {
    _isRedelivered = isRedelivered;
  }

  /**
   * Returns the message type
   */
  public String getJMSType()
    throws JMSException
  {
    return _messageType;
  }

  /**
   * Sets the message type.
   *
   * @param type the delivery mode
   */
  public void setJMSType(String type)
    throws JMSException
  {
    _messageType = type;
  }

  /**
   * Returns the message expiration time.
   */
  public long getJMSExpiration()
    throws JMSException
  {
    return _expiration;
  }

  /**
   * Sets the message expiration type.
   *
   * @param time the expiration time
   */
  public void setJMSExpiration(long time)
    throws JMSException
  {
    _expiration = time;
  }

  /**
   * Returns the message priority.
   */
  public int getJMSPriority()
  {
    return _priority;
  }

  /**
   * Sets the message priority.
   *
   * @param priority the priority
   */
  public void setJMSPriority(int priority)
  {
    _priority = priority;
  }

  /**
   * Clears the message properties, making them writeable.
   */
  public void clearProperties()
    throws JMSException
  {
    if (_properties != null)
      _properties.clear();
    _isHeaderWriteable = true;
  }

  /**
   * Returns true if the property exists.
   */
  public boolean propertyExists(String name)
    throws JMSException
  {
    if (_properties == null)
      return false;
    
    return _properties.keySet().contains(name);
  }

  /**
   * Returns a boolean property with the given name.
   */
  public boolean getBooleanProperty(String name)
    throws JMSException
  {
    return ObjectConverter.toBoolean(getObjectProperty(name));
  }

  /**
   * Returns a property as a byte
   */
  public byte getByteProperty(String name)
    throws JMSException
  {
    return ObjectConverter.toByte(getObjectProperty(name));
  }

  /**
   * Returns a property as a short
   */
  public short getShortProperty(String name)
    throws JMSException
  {
    return ObjectConverter.toShort(getObjectProperty(name));
  }

  /**
   * Returns a property as an integer
   */
  public int getIntProperty(String name)
    throws JMSException
  {
    return ObjectConverter.toInt(getObjectProperty(name));
  }

  /**
   * Returns a property as a long
   */
  public long getLongProperty(String name)
    throws JMSException