org.apache.activemq

Class ActiveMQMessageProducerSupport

java.lang.Object

org.apache.activemq.ActiveMQMessageProducerSupport

All Implemented Interfaces:

MessageProducer, Closeable

Direct Known Subclasses:

ActiveMQMessageProducer

public abstract class ActiveMQMessageProducerSupport
extends Object
implements MessageProducer, Closeable

A useful base class for implementing a MessageProducer

Field Summary

Fields

Modifier and Type	Field and Description
protected int	defaultDeliveryMode
protected int	defaultPriority
protected long	defaultTimeToLive
protected boolean	disableMessageID
protected boolean	disableMessageTimestamp
protected int	sendTimeout
protected ActiveMQSession	session

Constructor Summary

Constructors

Constructor and Description
ActiveMQMessageProducerSupport(ActiveMQSession session)

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract void	checkClosed()
int	getDeliveryMode() Gets the producer's default delivery mode.
boolean	getDisableMessageID() Gets an indication of whether message IDs are disabled.
boolean	getDisableMessageTimestamp() Gets an indication of whether message timestamps are disabled.
int	getPriority() Gets the producer's default priority.
int	getSendTimeout()
long	getTimeToLive() Gets the default length of time in milliseconds from its dispatch time that a produced message should be retained by the message system.
void	send(Destination destination, Message message) Sends a message to a destination for an unidentified message producer.
void	send(Message message) Sends a message using the MessageProducer's default delivery mode, priority, and time to live.
void	send(Message message, int deliveryMode, int priority, long timeToLive) Sends a message to the destination, specifying delivery mode, priority, and time to live.
void	setDeliveryMode(int newDeliveryMode) Sets the producer's default delivery mode.
void	setDisableMessageID(boolean value) Sets whether message IDs are disabled.
void	setDisableMessageTimestamp(boolean value) Sets whether message timestamps are disabled.
void	setPriority(int newDefaultPriority) Sets the producer's default priority.
void	setSendTimeout(int sendTimeout)
void	setTimeToLive(long timeToLive) Sets the default length of time in milliseconds from its dispatch time that a produced message should be retained by the message system.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.jms.MessageProducer

close, getDestination, send

Methods inherited from interface org.apache.activemq.Closeable

close

Field Detail

session

protected ActiveMQSession session

disableMessageID

protected boolean disableMessageID

disableMessageTimestamp

protected boolean disableMessageTimestamp

defaultDeliveryMode

protected int defaultDeliveryMode

defaultPriority

protected int defaultPriority

defaultTimeToLive

protected long defaultTimeToLive

sendTimeout

protected int sendTimeout

Constructor Detail

ActiveMQMessageProducerSupport

public ActiveMQMessageProducerSupport(ActiveMQSession session)

Method Detail

setDisableMessageID

public void setDisableMessageID(boolean value)
                         throws JMSException

Sets whether message IDs are disabled.

Since message IDs take some effort to create and increase a message's size, some JMS providers may be able to optimize message overhead if they are given a hint that the message ID is not used by an application. By calling the setDisableMessageID method on this message producer, a JMS client enables this potential optimization for all messages sent by this message producer. If the JMS provider accepts this hint, these messages must have the message ID set to null; if the provider ignores the hint, the message ID must be set to its normal unique value.

Message IDs are enabled by default.

Specified by:

setDisableMessageID in interface MessageProducer

Parameters:

value - indicates if message IDs are disabled

Throws:

JMSException - if the JMS provider fails to close the producer due to some internal error.

getDisableMessageID

public boolean getDisableMessageID()
                            throws JMSException

Gets an indication of whether message IDs are disabled.

Specified by:

getDisableMessageID in interface MessageProducer

Returns:

an indication of whether message IDs are disabled

Throws:

JMSException - if the JMS provider fails to determine if message IDs are disabled due to some internal error.

setDisableMessageTimestamp

public void setDisableMessageTimestamp(boolean value)
                                throws JMSException

Sets whether message timestamps are disabled.

Since timestamps take some effort to create and increase a message's size, some JMS providers may be able to optimize message overhead if they are given a hint that the timestamp is not used by an application. By calling the setDisableMessageTimestamp method on this message producer, a JMS client enables this potential optimization for all messages sent by this message producer. If the JMS provider accepts this hint, these messages must have the timestamp set to zero; if the provider ignores the hint, the timestamp must be set to its normal value.

Message timestamps are enabled by default.

Specified by:

setDisableMessageTimestamp in interface MessageProducer

Parameters:

value - indicates if message timestamps are disabled

Throws:

JMSException - if the JMS provider fails to close the producer due to some internal error.

getDisableMessageTimestamp

public boolean getDisableMessageTimestamp()
                                   throws JMSException

Gets an indication of whether message timestamps are disabled.

Specified by:

getDisableMessageTimestamp in interface MessageProducer

Returns:

an indication of whether message timestamps are disabled

Throws:

JMSException - if the JMS provider fails to close the producer due to some internal error.

setDeliveryMode

public void setDeliveryMode(int newDeliveryMode)
                     throws JMSException

Sets the producer's default delivery mode.

Delivery mode is set to PERSISTENT by default.

Specified by:

setDeliveryMode in interface MessageProducer

Parameters:

newDeliveryMode - the message delivery mode for this message producer; legal values are DeliveryMode.NON_PERSISTENT and DeliveryMode.PERSISTENT

Throws:

JMSException - if the JMS provider fails to set the delivery mode due to some internal error.

See Also:

MessageProducer.getDeliveryMode(), DeliveryMode.NON_PERSISTENT, DeliveryMode.PERSISTENT, Message.DEFAULT_DELIVERY_MODE

getDeliveryMode

public int getDeliveryMode()
                    throws JMSException

Gets the producer's default delivery mode.

Specified by:

getDeliveryMode in interface MessageProducer

Returns:

the message delivery mode for this message producer

Throws:

JMSException - if the JMS provider fails to close the producer due to some internal error.

setPriority

public void setPriority(int newDefaultPriority)
                 throws JMSException

Sets the producer's default priority.

The JMS API defines ten levels of priority value, with 0 as the lowest priority and 9 as the highest. Clients should consider priorities 0-4 as gradations of normal priority and priorities 5-9 as gradations of expedited priority. Priority is set to 4 by default.

Specified by:

setPriority in interface MessageProducer

Parameters:

newDefaultPriority - the message priority for this message producer; must be a value between 0 and 9

Throws:

JMSException - if the JMS provider fails to set the delivery mode due to some internal error.

See Also:

MessageProducer.getPriority(), Message.DEFAULT_PRIORITY

getPriority

public int getPriority()
                throws JMSException

Gets the producer's default priority.

Specified by:

getPriority in interface MessageProducer

Returns:

the message priority for this message producer

Throws:

JMSException - if the JMS provider fails to close the producer due to some internal error.

See Also:

MessageProducer.setPriority(int)

setTimeToLive

public void setTimeToLive(long timeToLive)
                   throws JMSException

Sets the default length of time in milliseconds from its dispatch time that a produced message should be retained by the message system.

Time to live is set to zero by default.

Specified by:

setTimeToLive in interface MessageProducer

Parameters:

timeToLive - the message time to live in milliseconds; zero is unlimited

Throws:

JMSException - if the JMS provider fails to set the time to live due to some internal error.

See Also:

MessageProducer.getTimeToLive(), Message.DEFAULT_TIME_TO_LIVE

getTimeToLive

public long getTimeToLive()
                   throws JMSException

Gets the default length of time in milliseconds from its dispatch time that a produced message should be retained by the message system.

Specified by:

getTimeToLive in interface MessageProducer

Returns:

the message time to live in milliseconds; zero is unlimited

Throws:

JMSException - if the JMS provider fails to get the time to live due to some internal error.

See Also:

MessageProducer.setTimeToLive(long)

send

public void send(Message message)
          throws JMSException

Sends a message using the MessageProducer's default delivery mode, priority, and time to live.

Specified by:

send in interface MessageProducer

Parameters:

message - the message to send

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with a MessageProducer with an invalid destination.

UnsupportedOperationException - if a client uses this method with a MessageProducer that did not specify a destination at creation time.

Since:

1.1

See Also:

Session.createProducer(javax.jms.Destination), MessageProducer

send

public void send(Message message,
        int deliveryMode,
        int priority,
        long timeToLive)
          throws JMSException

Sends a message to the destination, specifying delivery mode, priority, and time to live.

Specified by:

send in interface MessageProducer

Parameters:

message - the message to send

deliveryMode - the delivery mode to use

priority - the priority for this message

timeToLive - the message's lifetime (in milliseconds)

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with a MessageProducer with an invalid destination.

UnsupportedOperationException - if a client uses this method with a MessageProducer that did not specify a destination at creation time.

Since:

1.1

See Also:

Session.createProducer(javax.jms.Destination)

send

public void send(Destination destination,
        Message message)
          throws JMSException

Sends a message to a destination for an unidentified message producer. Uses the MessageProducer's default delivery mode, priority, and time to live.

Typically, a message producer is assigned a destination at creation time; however, the JMS API also supports unidentified message producers, which require that the destination be supplied every time a message is sent.

Specified by:

send in interface MessageProducer

Parameters:

destination - the destination to send this message to

message - the message to send

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with an invalid destination.

UnsupportedOperationException - if a client uses this method with a MessageProducer that specified a destination at creation time.

See Also:

Session.createProducer(javax.jms.Destination), MessageProducer

checkClosed

protected abstract void checkClosed()
                             throws IllegalStateException

Throws:

IllegalStateException

getSendTimeout

public int getSendTimeout()

Returns:

the sendTimeout

setSendTimeout

public void setSendTimeout(int sendTimeout)

Parameters:

sendTimeout - the sendTimeout to set