#region License
/*
* Copyright 2002-2008 the original author or authors.
*
* 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.
*/
#endregion
using Spring.Messaging.Ems.Common;
using TIBCO.EMS;
namespace Spring.Messaging.Ems.Connections{
/// <summary>
/// MessageProducer decorator that adapts calls to a shared MessageProducer
/// instance underneath, managing QoS settings locally within the decorator.
/// </summary>
/// <author>Juergen Hoeller</author>
/// <author>Mark Pollack (.NET)</author>
public class CachedMessageProducer : IMessageProducer
{
private readonly IMessageProducer target;
private object originalDisableMessageID;
private object originalDisableMessageTimestamp;
private MessageDeliveryMode deliveryMode;
private int priority;
private long timeToLive;
/// <summary>
/// Initializes a new instance of the <see cref="CachedMessageProducer"/> class.
/// </summary>
/// <param name="target">The target.</param>
public CachedMessageProducer(IMessageProducer target)
{
this.target = target;
deliveryMode = target.MsgDeliveryMode;
priority = target.Priority;
timeToLive = target.TimeToLive;
}
/// <summary>
/// Gets or sets a value indicating whether disable setting of the message ID property.
/// </summary>
/// <value><c>true</c> if disable message ID setting; otherwise, <c>false</c>.</value>
public bool DisableMessageID
{
get
{
return target.DisableMessageID;
}
set
{
if (originalDisableMessageID == null)
{
originalDisableMessageID = target.DisableMessageID;
}
target.DisableMessageID = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether disable setting the message timestamp property.
/// </summary>
/// <value>
/// <c>true</c> if disable message timestamp; otherwise, <c>false</c>.
/// </value>
public bool DisableMessageTimestamp
{
get
{
return target.DisableMessageTimestamp;
}
set
{
if (originalDisableMessageTimestamp == null)
{
originalDisableMessageTimestamp = target.DisableMessageTimestamp;
}
target.DisableMessageTimestamp = value;
}
}
/// <summary>
/// Gets or sets the producer's default delivery mode.
/// </summary>
/// <value>The message delivery mode for this message producer</value>
public int DeliveryMode
{
get { return (int)this.deliveryMode; }
set { this.deliveryMode = (MessageDeliveryMode) value; }
}
/// <summary>
/// Gets or sets the MSG delivery mode.
/// </summary>
/// <value>The MSG delivery mode.</value>
public MessageDeliveryMode MsgDeliveryMode
{
get { return this.deliveryMode; }
set { this.deliveryMode = value; }
}
/// <summary>
/// Gets or sets the priority of messages sent with this producer.
/// </summary>
/// <value>The priority.</value>
public int Priority
{
get { return priority; }
set { priority = value;}
}
/// <summary>
/// Gets or sets the the default length of time in milliseconds from its dispatch time
/// that a produced message should be retained by the message system.
/// </summary>
/// <remarks>Time to live is set to zero by default.</remarks>
/// <value>The message time to live in milliseconds; zero is unlimited</value>
public long TimeToLive
{
get { return timeToLive; }
set { timeToLive = value; }
}
public Destination Destination
{
get { return target.Destination; }
}
/// <summary>
/// Gets the target MessageProducer, the producer we are 'wrapping'
/// </summary>
/// <value>The target MessageProducer.</value>
public IMessageProducer Target
{
get { return target; }
}
/// <summary>
/// Sends the specified message.
/// </summary>
/// <param name="message">The message.</param>
public void Send(Message message)
{
target.Send(message, this.deliveryMode, this.priority, this.timeToLive);
}
/// <summary>
/// Sends the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="deliveryMode">The delivery mode.</param>
/// <param name="priority">The priority.</param>
/// <param name="timeToLive">The time to live.</param>
public void Send(Message message, int deliveryMode, int priority, long timeToLive)
{
target.Send(message, deliveryMode, priority, timeToLive);
}
/// <summary>
/// Sends a message to the specified destination.
/// </summary>
/// <param name="destination">The destination.</param>
/// <param name="message">The message.</param>
public void Send(Destination destination, Message message)
{
target.Send(destination, message, this.deliveryMode, this.priority, this.timeToLive);
}
public void Send(Message message, MessageDeliveryMode deliveryMode, int priority, long timeToLive)
{
target.Send(message, deliveryMode, priority, timeToLive);
}
public void Send(Destination dest, Message message, int deliveryMode, int priority, long timeToLive)
{
target.Send(dest, message, deliveryMode, priority, timeToLive);
}
public void Send(Destination dest, Message message, MessageDeliveryMode deliveryMode, int priority, long timeToLive)
{
target.Send(dest, message, deliveryMode, priority, timeToLive);
}
/// <summary>
/// Reset properties.
/// </summary>
public void Close()
{
// It's a cached MessageProducer... reset properties only.
if (originalDisableMessageID != null)
{
target.DisableMessageID = (bool) originalDisableMessageID;
originalDisableMessageID = null;
}
if (originalDisableMessageTimestamp != null)
{
target.DisableMessageTimestamp = (bool) originalDisableMessageTimestamp;
originalDisableMessageTimestamp = null;
}
}
public MessageProducer NativeMessageProducer
{
get { return target.NativeMessageProducer; }
}
/// <summary>
/// Returns string indicated this is a wrapped MessageProducer
/// </summary>
/// <returns></returns>
public override string ToString()
{
return "Cached EMS MessageProducer: " + this.target;
}
}
}
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