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package javax.jms;
/** A client uses a <CODE>QueueSender</CODE> object to send messages to a queue.
*
* <P>Normally, the <CODE>Queue</CODE> is specified when a
* <CODE>QueueSender</CODE> is created. In this case, an attempt to use
* the <CODE>send</CODE> methods for an unidentified
* <CODE>QueueSender</CODE> will throw a
* <CODE>java.lang.UnsupportedOperationException</CODE>.
*
* <P>If the <CODE>QueueSender</CODE> is created with an unidentified
* <CODE>Queue</CODE>, an attempt to use the <CODE>send</CODE> methods that
* assume that the <CODE>Queue</CODE> has been identified will throw a
* <CODE>java.lang.UnsupportedOperationException</CODE>.
*
* <P>During the execution of its <CODE>send</CODE> method, a message
* must not be changed by other threads within the client.
* If the message is modified, the result of the <CODE>send</CODE> is
* undefined.
*
* <P>After sending a message, a client may retain and modify it
* without affecting the message that has been sent. The same message
* object may be sent multiple times.
*
* <P>The following message headers are set as part of sending a
* message: <code>JMSDestination</code>, <code>JMSDeliveryMode</code>,
* <code>JMSExpiration</code>, <code>JMSPriority</code>,
* <code>JMSMessageID</code> and <code>JMSTimeStamp</code>.
* When the message is sent, the values of these headers are ignored.
* After the completion of the <CODE>send</CODE>, the headers hold the values
* specified by the method sending the message. It is possible for the
* <code>send</code> method not to set <code>JMSMessageID</code> and
* <code>JMSTimeStamp</code> if the
* setting of these headers is explicitly disabled by the
* <code>MessageProducer.setDisableMessageID</code> or
* <code>MessageProducer.setDisableMessageTimestamp</code> method.
*
* <P>Creating a <CODE>MessageProducer</CODE> provides the same features as
* creating a <CODE>QueueSender</CODE>. A <CODE>MessageProducer</CODE> object is
* recommended when creating new code. The <CODE>QueueSender</CODE> is
* provided to support existing code.
*
*
* @version 1.1 - February 2, 2002
* @author Mark Hapner
* @author Rich Burridge
* @author Kate Stout
*
* @see javax.jms.MessageProducer
* @see javax.jms.Session#createProducer(Destination)
* @see javax.jms.QueueSession#createSender(Queue)
*/
public interface QueueSender extends MessageProducer {
/** Gets the queue associated with this <CODE>QueueSender</CODE>.
*
* @return this sender's queue
*
* @exception JMSException if the JMS provider fails to get the queue for
* this <CODE>QueueSender</CODE>
* due to some internal error.
*/
Queue
getQueue() throws JMSException;
/** Sends a message to the queue. Uses the <CODE>QueueSender</CODE>'s
* default delivery mode, priority, and time to live.
*
* @param message the message to send
*
* @exception JMSException if the JMS provider fails to send the message
* due to some internal error.
* @exception MessageFormatException if an invalid message is specified.
* @exception InvalidDestinationException if a client uses
* this method with a <CODE>QueueSender</CODE> with
* an invalid queue.
* @exception java.lang.UnsupportedOperationException if a client uses this
* method with a <CODE>QueueSender</CODE> that did
* not specify a queue at creation time.
*
* @see javax.jms.MessageProducer#getDeliveryMode()
* @see javax.jms.MessageProducer#getTimeToLive()
* @see javax.jms.MessageProducer#getPriority()
*/
void
send(Message message) throws JMSException;
/** Sends a message to the queue, specifying delivery mode, priority, and
* time to live.
*
* @param message the message to send
* @param deliveryMode the delivery mode to use
* @param priority the priority for this message
* @param timeToLive the message's lifetime (in milliseconds)
*
* @exception JMSException if the JMS provider fails to send the message
* due to some internal error.
* @exception MessageFormatException if an invalid message is specified.
* @exception InvalidDestinationException if a client uses
* this method with a <CODE>QueueSender</CODE> with
* an invalid queue.
* @exception java.lang.UnsupportedOperationException if a client uses this
* method with a <CODE>QueueSender</CODE> that did
* not specify a queue at creation time.
*/
void
send(Message message,
int deliveryMode,
int priority,
long timeToLive) throws JMSException;
/** Sends a message to a queue for an unidentified message producer.
* Uses the <CODE>QueueSender</CODE>'s default delivery mode, priority,
* and time to live.
*
* <P>Typically, a message producer is assigned a queue at creation
* time; however, the JMS API also supports unidentified message producers,
* which require that the queue be supplied every time a message is
* sent.
*
* @param queue the queue to send this message to
* @param message the message to send
*
* @exception JMSException if the JMS provider fails to send the message
* due to some internal error.
* @exception MessageFormatException if an invalid message is specified.
* @exception InvalidDestinationException if a client uses
* this method with an invalid queue.
*
* @see javax.jms.MessageProducer#getDeliveryMode()
* @see javax.jms.MessageProducer#getTimeToLive()
* @see javax.jms.MessageProducer#getPriority()
*/
void
send(Queue queue, Message message) throws JMSException;
/** Sends a message to a queue for an unidentified message producer,
* specifying delivery mode, priority and time to live.
*
* <P>Typically, a message producer is assigned a queue at creation
* time; however, the JMS API also supports unidentified message producers,
* which require that the queue be supplied every time a message is
* sent.
*
* @param queue the queue to send this message to
* @param message the message to send
* @param deliveryMode the delivery mode to use
* @param priority the priority for this message
* @param timeToLive the message's lifetime (in milliseconds)
*
* @exception JMSException if the JMS provider fails to send the message
* due to some internal error.
* @exception MessageFormatException if an invalid message is specified.
* @exception InvalidDestinationException if a client uses
* this method with an invalid queue.
*/
void
send(Queue queue,
Message message,
int deliveryMode,
int priority,
long timeToLive) throws JMSException;
}
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