javax.jms

Interface JMSProducer

public interface JMSProducer

A JMSProducer is a simple object used to send messages on behalf of a JMSContext. An instance of JMSProducer is created by calling the createProducer method on a JMSContext. It provides various send methods to send a message to a specified destination. It also provides methods to allow message send options, message properties and message headers to be specified prior to sending a message or set of messages.

Message send options may be specified using one or more of the following methods: setDeliveryMode, setPriority, setTimeToLive, setDeliveryDelay, setDisableMessageTimestamp, setDisableMessageID and setAsync.

Message properties may be may be specified using one or more of nine setProperty methods. Any message properties set using these methods will override any message properties that have been set directly on the message.

Message headers may be specified using one or more of the following methods: setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSType or setJMSReplyTo. Any message headers set using these methods will override any message headers that have been set directly on the message.

All the above methods return the JMSProducer to allow method calls to be chained together, allowing a fluid programming style. For example:

context.createProducer().setDeliveryMode(DeliveryMode.NON_PERSISTENT).setTimeToLive(1000).send(destination, message);

Instances of JMSProducer are intended to be lightweight objects which can be created freely and which do not consume significant resources. This interface therefore does not provide a close method.

Since:

JMS 2.0

Version:

JMS 2.0

Method Summary

Modifier and Type	Method and Description
JMSProducer	clearProperties() Clears any message properties set on this JMSProducer
CompletionListener	getAsync() If subsequent calls to send on this JMSProducer object have been configured to be asynchronous then this method returns the CompletionListener that has previously been configured.
boolean	getBooleanProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a boolean.
byte	getByteProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a String.
long	getDeliveryDelay() Gets the minimum length of time in milliseconds that must elapse after a message is sent before the JMS provider may deliver the message to a consumer.
int	getDeliveryMode() Returns the delivery mode of messages that are sent using this JMSProducer
boolean	getDisableMessageID() Gets an indication of whether message IDs are disabled.
boolean	getDisableMessageTimestamp() Gets an indication of whether message timestamps are disabled.
double	getDoubleProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a double.
float	getFloatProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a float.
int	getIntProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a int.
String	getJMSCorrelationID() Returns the JMSCorrelationID header value that has been set on this JMSProducer, as a String.
byte[]	getJMSCorrelationIDAsBytes() Returns the JMSCorrelationID header value that has been set on this JMSProducer, as an array of bytes.
Destination	getJMSReplyTo() Returns the JMSReplyTo header value that has been set on this JMSProducer.
String	getJMSType() Returns the JMSType header value that has been set on this JMSProducer.
long	getLongProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a long.
Object	getObjectProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to objectified format.
int	getPriority() Return the priority of messages that are sent using this JMSProducer
Set<String>	getPropertyNames() Returns an unmodifiable Set view of the names of all the message properties that have been set on this JMSProducer.
short	getShortProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a short.
String	getStringProperty(String name) Returns the message property with the specified name that has been set on this JMSProducer, converted to a String.
long	getTimeToLive() Returns the time to live of messages that are sent using this JMSProducer.
boolean	propertyExists(String name) Indicates whether a message property with the specified name has been set on this JMSProducer
JMSProducer	send(Destination destination, byte[] body) Send a BytesMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.
JMSProducer	send(Destination destination, Map<String,Object> body) Send a MapMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.
JMSProducer	send(Destination destination, Message message) Sends a message to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.
JMSProducer	send(Destination destination, Serializable body) Send an ObjectMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.
JMSProducer	send(Destination destination, String body) Send a TextMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.
JMSProducer	setAsync(CompletionListener completionListener) Specifies whether subsequent calls to send on this JMSProducer object should be synchronous or asynchronous.
JMSProducer	setDeliveryDelay(long deliveryDelay) Sets the minimum length of time in milliseconds that must elapse after a message is sent before the JMS provider may deliver the message to a consumer.
JMSProducer	setDeliveryMode(int deliveryMode) Specifies the delivery mode of messages that are sent using this JMSProducer
JMSProducer	setDisableMessageID(boolean value) Specifies whether message IDs may be disabled for messages that are sent using this JMSProducer
JMSProducer	setDisableMessageTimestamp(boolean value) Specifies whether message timestamps may be disabled for messages that are sent using this JMSProducer.
JMSProducer	setJMSCorrelationID(String correlationID) Specifies that messages sent using this JMSProducer will have their JMSCorrelationID header value set to the specified correlation ID, where correlation ID is specified as a String.
JMSProducer	setJMSCorrelationIDAsBytes(byte[] correlationID) Specifies that messages sent using this JMSProducer will have their JMSCorrelationID header value set to the specified correlation ID, where correlation ID is specified as an array of bytes.
JMSProducer	setJMSReplyTo(Destination replyTo) Specifies that messages sent using this JMSProducer will have their JMSReplyTo header value set to the specified Destination object.
JMSProducer	setJMSType(String type) Specifies that messages sent using this JMSProducer will have their JMSType header value set to the specified message type.
JMSProducer	setPriority(int priority) Specifies the priority of messages that are sent using this JMSProducer
JMSProducer	setProperty(String name, boolean value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified boolean value.
JMSProducer	setProperty(String name, byte value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified byte value.
JMSProducer	setProperty(String name, double value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified double value.
JMSProducer	setProperty(String name, float value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified float value.
JMSProducer	setProperty(String name, int value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified int value.
JMSProducer	setProperty(String name, long value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified long value.
JMSProducer	setProperty(String name, Object value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified Java object value.
JMSProducer	setProperty(String name, short value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified short value.
JMSProducer	setProperty(String name, String value) Specifies that messages sent using this JMSProducer will have the specified property set to the specified String value.
JMSProducer	setTimeToLive(long timeToLive) Specifies the time to live of messages that are sent using this JMSProducer.

Method Detail

send

JMSProducer send(Destination destination,
                 Message message)

Sends a message to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.

Parameters:

destination - the destination to send this message to

message - the message to send

Returns:

this JMSProducer

Throws:

MessageFormatRuntimeException - if an invalid message is specified.

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

MessageNotWriteableRuntimeException - if this JMSProducer has been configured to set a message property, but the message's properties are read-only

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

send

JMSProducer send(Destination destination,
                 String body)

Send a TextMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.

Parameters:

destination - the destination to send this message to

body - the body of the TextMessage that will be sent. If a null value is specified then a TextMessage with no body will be sent.

Returns:

this JMSProducer

Throws:

MessageFormatRuntimeException - if an invalid message is specified.

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

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

send

JMSProducer send(Destination destination,
                 Map<String,Object> body)

Send a MapMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.

Parameters:

destination - the destination to send this message to

body - the body of the MapMessage that will be sent. If a null value is specified then a MapMessage with no map entries will be sent.

Returns:

this JMSProducer

Throws:

MessageFormatRuntimeException - if an invalid message is specified.

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

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

send

JMSProducer send(Destination destination,
                 byte[] body)

Send a BytesMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.

Parameters:

destination - the destination to send this message to

body - the body of the BytesMessage that will be sent. If a null value is specified then a BytesMessage with no body will be sent.

Returns:

this JMSProducer

Throws:

MessageFormatRuntimeException - if an invalid message is specified.

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

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

send

JMSProducer send(Destination destination,
                 Serializable body)

Send an ObjectMessage with the specified body to the specified destination, using any send options, message properties and message headers that have been defined on this JMSProducer.

Parameters:

destination - the destination to send this message to

body - the body of the ObjectMessage that will be sent. If a null value is specified then an ObjectMessage with no body will be sent.

Returns:

this JMSProducer

Throws:

MessageFormatRuntimeException - if an invalid message is specified.

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

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

setDisableMessageID

JMSProducer setDisableMessageID(boolean value)

Specifies whether message IDs may be disabled for messages that are sent using this JMSProducer

Since message IDs take some effort to create and increase a message's size, some JMS providers may be able to optimise message overhead if they are given a hint that the message ID is not used by an application. By calling this method, a JMS application enables this potential optimisation for all messages sent using this JMSProducer. 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.

Parameters:

value - indicates whether message IDs may be disabled

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set message ID to disabled due to some internal error.

See Also:

getDisableMessageID()

getDisableMessageID

boolean getDisableMessageID()

Gets an indication of whether message IDs are disabled.

Returns:

an indication of whether message IDs are disabled

Throws:

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

See Also:

setDisableMessageID(boolean)

setDisableMessageTimestamp

JMSProducer setDisableMessageTimestamp(boolean value)

Specifies whether message timestamps may be disabled for messages that are sent using this JMSProducer. Since timestamps take some effort to create and increase a message's size, some JMS providers may be able to optimise message overhead if they are given a hint that the timestamp is not used by an application. By calling this method, a JMS application enables this potential optimisation for all messages sent using this JMSProducer. 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.

Parameters:

value - indicates whether message timestamps may be disabled

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set timestamps to disabled due to some internal error.

See Also:

getDisableMessageTimestamp()

getDisableMessageTimestamp

boolean getDisableMessageTimestamp()

Gets an indication of whether message timestamps are disabled.

Returns:

an indication of whether message timestamps are disabled

Throws:

JMSRuntimeException - if the JMS provider fails to determine if timestamps are disabled due to some internal error.

See Also:

setDisableMessageTimestamp(boolean)

setDeliveryMode

JMSProducer setDeliveryMode(int deliveryMode)

Specifies the delivery mode of messages that are sent using this JMSProducer

Delivery mode is set to PERSISTENT by default.

Parameters:

deliveryMode - the message delivery mode to be used; legal values are DeliveryMode.NON_PERSISTENT and DeliveryMode.PERSISTENT

Returns:

this JMSProducer

Throws:

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

See Also:

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

getDeliveryMode

int getDeliveryMode()

Returns the delivery mode of messages that are sent using this JMSProducer

Returns:

the message delivery mode

Throws:

JMSRuntimeException - if the JMS provider fails to get the delivery mode due to some internal error.

See Also:

setDeliveryMode(int)

setPriority

JMSProducer setPriority(int priority)

Specifies the priority of messages that are sent using this JMSProducer

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.

Parameters:

priority - the message priority to be used; must be a value between 0 and 9

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the priority due to some internal error.

See Also:

getPriority(), Message.DEFAULT_PRIORITY

getPriority

int getPriority()

Return the priority of messages that are sent using this JMSProducer

Returns:

the message priority

Throws:

JMSRuntimeException - if the JMS provider fails to get the priority due to some internal error.

See Also:

setPriority(int)

setTimeToLive

JMSProducer setTimeToLive(long timeToLive)

Specifies the time to live of messages that are sent using this JMSProducer. This is used to determine the expiration time of a message.

The expiration time of a message is the sum of the message's time to live and the time it is sent. For transacted sends, this is the time the client sends the message, not the time the transaction is committed.

Clients should not receive messages that have expired; however, JMS does not guarantee that this will not happen.

A JMS provider should do its best to accurately expire messages; however, JMS does not define the accuracy provided. It is not acceptable to simply ignore time-to-live.

Time to live is set to zero by default, which means a message never expires.

Parameters:

timeToLive - the message time to live to be used, in milliseconds; a value of zero means that a message never expires.

Returns:

this JMSProducer

Throws:

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

See Also:

getTimeToLive(), Message.DEFAULT_TIME_TO_LIVE

getTimeToLive

long getTimeToLive()

Returns the time to live of messages that are sent using this JMSProducer.

Returns:

the message time to live in milliseconds; a value of zero means that a message never expires.

Throws:

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

See Also:

setTimeToLive(long)

setDeliveryDelay

JMSProducer setDeliveryDelay(long deliveryDelay)

Sets the minimum length of time in milliseconds that must elapse after a message is sent before the JMS provider may deliver the message to a consumer.

For transacted sends, this time starts when the client sends the message, not when the transaction is committed.

deliveryDelay is set to zero by default.

Parameters:

deliveryDelay - the delivery delay in milliseconds.

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the delivery delay due to some internal error.

See Also:

getDeliveryDelay(), Message.DEFAULT_DELIVERY_DELAY

getDeliveryDelay

long getDeliveryDelay()

Gets the minimum length of time in milliseconds that must elapse after a message is sent before the JMS provider may deliver the message to a consumer.

Returns:

the delivery delay in milliseconds.

Throws:

JMSRuntimeException - if the JMS provider fails to get the delivery delay due to some internal error.

See Also:

setDeliveryDelay(long)

setAsync

JMSProducer setAsync(CompletionListener completionListener)

Specifies whether subsequent calls to send on this JMSProducer object should be synchronous or asynchronous. If the specified CompletionListener is not null then subsequent calls to send will be asynchronous. If the specified CompletionListener is null then subsequent calls to send will be synchronous. Calls to send are synchronous by default.

If a call to send is asynchronous then part of the work involved in sending the message will be performed in a separate thread and the specified CompletionListener will be notified when the operation has completed.

When the message has been successfully sent the JMS provider invokes the callback method onCompletion on the CompletionListener object. Only when that callback has been invoked can the application be sure that the message has been successfully sent with the same degree of confidence as if the send had been synchronous. An application which requires this degree of confidence must therefore wait for the callback to be invoked before continuing.

The following information is intended to give an indication of how an asynchronous send would typically be implemented.

In some JMS providers, a normal synchronous send involves sending the message to a remote JMS server and then waiting for an acknowledgement to be received before returning. It is expected that such a provider would implement an asynchronous send by sending the message to the remote JMS server and then returning without waiting for an acknowledgement. When the acknowledgement is received, the JMS provider would notify the application by invoking the onCompletion method on the application-specified CompletionListener object. If for some reason the acknowledgement is not received the JMS provider would notify the application by invoking the CompletionListener's onException method.

In those cases where the JMS specification permits a lower level of reliability, a normal synchronous send might not wait for an acknowledgement. In that case it is expected that an asynchronous send would be similar to a synchronous send: the JMS provider would send the message to the remote JMS server and then return without waiting for an acknowledgement. However the JMS provider would still notify the application that the send had completed by invoking the onCompletion method on the application-specified CompletionListener object.

It is up to the JMS provider to decide exactly what is performed in the calling thread and what, if anything, is performed asynchronously, so long as it satisfies the requirements given below:

Quality of service: After the send operation has completed successfully, which means that the message has been successfully sent with the same degree of confidence as if a normal synchronous send had been performed, the JMS provider must invoke the CompletionListener's onCompletion method. The CompletionListener must not be invoked earlier than this.

Exceptions: If an exception is encountered during the call to the send method then an appropriate exception should be thrown in the thread that is calling the send method. In this case the JMS provider must not invoke the CompletionListener's onCompletion or onException method. If an exception is encountered which cannot be thrown in the thread that is calling the send method then the JMS provider must call the CompletionListener's onException method. In both cases if an exception occurs it is undefined whether or not the message was successfully sent.

Message order: If the same JMSContext is used to send multiple messages then JMS message ordering requirements must be satisfied. This applies even if a combination of synchronous and asynchronous sends has been performed. The application is not required to wait for an asynchronous send to complete before sending the next message.

Close, commit or rollback: If the close method is called on the JMSContext then the JMS provider must block until any incomplete send operations have been completed and all CompletionListener callbacks have returned before closing the object and returning. If the session is transacted (uses a local transaction) then when the JMSContext's commit or rollback method is called the JMS provider must block until any incomplete send operations have been completed and all CompletionListener callbacks have returned before performing the commit or rollback. Incomplete sends should be allowed to complete normally unless an error occurs.

A CompletionListener callback method must not call close, commit or rollback on its own JMSContext. Doing so will cause the close, commit or rollback to throw an IllegalStateRuntimeException.

Restrictions on usage in Java EE This method must not be used in a Java EE EJB or web container. Doing so may cause a JMSRuntimeException to be thrown though this is not guaranteed.

Message headers JMS defines a number of message header fields and message properties which must be set by the "JMS provider on send". If the send is asynchronous these fields and properties may be accessed on the sending client only after the CompletionListener has been invoked. If the CompletionListener's onException method is called then the state of these message header fields and properties is undefined.

Restrictions on threading: Applications that perform an asynchronous send must confirm to the threading restrictions defined in JMS. This means that the session may be used by only one thread at a time.

Setting a CompletionListener does not cause the session to be dedicated to the thread of control which calls the CompletionListener. The application thread may therefore continue to use the session after performing an asynchronous send. However the CompletionListener's callback methods must not use the session if an application thread might be using the session at the same time.

Use of the CompletionListener by the JMS provider: A session will only invoke one CompletionListener callback method at a time. For a given JMSContext, callbacks (both onCompletion and onException) will be performed in the same order as the corresponding calls to the send method. A JMS provider must not invoke the CompletionListener from the thread that is calling the send method.

Restrictions on the use of the Message object: Applications which perform an asynchronous send must take account of the restriction that a Message object is designed to be accessed by one logical thread of control at a time and does not support concurrent use.

After the send method has returned, the application must not attempt to read the headers, properties or body of the Message object until the CompletionListener's onCompletion or onException method has been called. This is because the JMS provider may be modifying the Message object in another thread during this time. The JMS provider may throw an JMSException if the application attempts to access or modify the Message object after the send method has returned and before the CompletionListener has been invoked. If the JMS provider does not throw an exception then the behaviour is undefined.

Parameters:

completionListener - If asynchronous send behaviour is required, this should be set to a CompletionListener to be notified when the send has completed. If synchronous send behaviour is required, this should be set to null.

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if an internal error occurs

See Also:

getAsync(), CompletionListener

getAsync

CompletionListener getAsync()

If subsequent calls to send on this JMSProducer object have been configured to be asynchronous then this method returns the CompletionListener that has previously been configured. If subsequent calls to send have been configured to be synchronous then this method returns null.

Returns:

the CompletionListener or null

Throws:

JMSRuntimeException - if the JMS provider fails to get the required information due to some internal error.

See Also:

setAsync(javax.jms.CompletionListener)

setProperty

JMSProducer setProperty(String name,
                        boolean value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified boolean value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the boolean value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getBooleanProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        byte value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified byte value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the byte value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getByteProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        short value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified short value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the short property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getShortProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        int value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified int value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the int property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getIntProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        long value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified long value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the long property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getLongProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        float value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified float value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the float property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getFloatProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        double value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified double value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the double property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getDoubleProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        String value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified String value.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the String property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

See Also:

getStringProperty(java.lang.String)

setProperty

JMSProducer setProperty(String name,
                        Object value)

Specifies that messages sent using this JMSProducer will have the specified property set to the specified Java object value.

Note that this method works only for the objectified primitive object types (Integer, Double, Long ...) and String objects.

This will replace any property of the same name that is already set on the message being sent.

Parameters:

name - the name of the property

value - the Java object property value to set

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the property due to some internal error.

IllegalArgumentException - if the name is null or if the name is an empty string.

MessageFormatRuntimeException - if the object is invalid

See Also:

getObjectProperty(java.lang.String)

clearProperties

JMSProducer clearProperties()

Clears any message properties set on this JMSProducer

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to clear the message properties due to some internal error.

propertyExists

boolean propertyExists(String name)

Indicates whether a message property with the specified name has been set on this JMSProducer

Parameters:

name - the name of the property

Returns:

true whether the property exists

Throws:

JMSRuntimeException - if the JMS provider fails to determine whether the property exists due to some internal error.

getBooleanProperty

boolean getBooleanProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a boolean.

Parameters:

name - the name of the property

Returns:

the property value, converted to a boolean

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,boolean)

getByteProperty

byte getByteProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a String.

Parameters:

name - the name of the property

Returns:

the property value, converted to a byte

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,byte)

getShortProperty

short getShortProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a short.

Parameters:

name - the name of the property

Returns:

the property value, converted to a short

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,short)

getIntProperty

int getIntProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a int.

Parameters:

name - the name of the property

Returns:

the property value, converted to a int

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,int)

getLongProperty

long getLongProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a long.

Parameters:

name - the name of the property

Returns:

the property value, converted to a long

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,long)

getFloatProperty

float getFloatProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a float.

Parameters:

name - the name of the property

Returns:

the property value, converted to a float

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,float)

getDoubleProperty

double getDoubleProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a double.

Parameters:

name - the name of the property

Returns:

the property value, converted to a double

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,double)

getStringProperty

String getStringProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to a String.

Parameters:

name - the name of the property

Returns:

the property value, converted to a boolean; if there is no property by this name, a null value is returned

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

MessageFormatRuntimeException - if this type conversion is invalid.

See Also:

setProperty(java.lang.String,String)

getObjectProperty

Object getObjectProperty(String name)

Returns the message property with the specified name that has been set on this JMSProducer, converted to objectified format.

This method can be used to return, in objectified format, an object that has been stored as a property in the message with the equivalent setObjectProperty method call, or its equivalent primitive settypeProperty method.

Parameters:

name - the name of the property

Returns:

the Java object property value with the specified name, in objectified format (for example, if the property was set as an int, an Integer is returned); if there is no property by this name, a null value is returned

Throws:

JMSRuntimeException - if the JMS provider fails to get the property value due to some internal error.

See Also:

setProperty(java.lang.String,java.lang.Object)

getPropertyNames

Set<String> getPropertyNames()

Returns an unmodifiable Set view of the names of all the message properties that have been set on this JMSProducer.

Note that JMS standard header fields are not considered properties and are not returned in this Set.

The set is backed by the JMSProducer, so changes to the map are reflected in the set. However the set may not be modified. Attempts to modify the returned collection, whether directly or via its iterator, will result in an java.lang.UnsupportedOperationException. Its behaviour matches that defined in the java.util.Collections method unmodifiableSet.

Returns:

a Set containing the names of all the message properties that have been set on this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to get the property names due to some internal error.

See Also:

Collections.unmodifiableSet(java.util.Set<? extends T>)

setJMSCorrelationIDAsBytes

JMSProducer setJMSCorrelationIDAsBytes(byte[] correlationID)

Specifies that messages sent using this JMSProducer will have their JMSCorrelationID header value set to the specified correlation ID, where correlation ID is specified as an array of bytes.

This will override any JMSCorrelationID header value that is already set on the message being sent.

The array is copied before the method returns, so future modifications to the array will not alter the value in this JMSProducer.

If a provider supports the native concept of correlation ID, a JMS client may need to assign specific JMSCorrelationID values to match those expected by native messaging clients. JMS providers without native correlation ID values are not required to support this method and its corresponding get method; their implementation may throw a java.lang.UnsupportedOperationException.

The use of a byte[] value for JMSCorrelationID is non-portable.

Parameters:

correlationID - the correlation ID value as an array of bytes

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the correlation ID due to some internal error.

See Also:

setJMSCorrelationID(String), getJMSCorrelationID(), getJMSCorrelationIDAsBytes()

getJMSCorrelationIDAsBytes

byte[] getJMSCorrelationIDAsBytes()

Returns the JMSCorrelationID header value that has been set on this JMSProducer, as an array of bytes.

The use of a byte[] value for JMSCorrelationID is non-portable.

Returns:

the correlation ID as an array of bytes

Throws:

JMSRuntimeException - if the JMS provider fails to get the correlation ID due to some internal error.

See Also:

setJMSCorrelationID(String), getJMSCorrelationID(), setJMSCorrelationIDAsBytes(byte[])

setJMSCorrelationID

JMSProducer setJMSCorrelationID(String correlationID)

Specifies that messages sent using this JMSProducer will have their JMSCorrelationID header value set to the specified correlation ID, where correlation ID is specified as a String.

This will override any JMSCorrelationID header value that is already set on the message being sent.

A client can use the JMSCorrelationID header field to link one message with another. A typical use is to link a response message with its request message.

JMSCorrelationID can hold one of the following:

• A provider-specific message ID
• An application-specific String
• A provider-native byte[] value

Since each message sent by a JMS provider is assigned a message ID value, it is convenient to link messages via message ID. All message ID values must start with the 'ID:' prefix.

In some cases, an application (made up of several clients) needs to use an application-specific value for linking messages. For instance, an application may use JMSCorrelationID to hold a value referencing some external information. Application-specified values must not start with the 'ID:' prefix; this is reserved for provider-generated message ID values.

If a provider supports the native concept of correlation ID, a JMS client may need to assign specific JMSCorrelationID values to match those expected by clients that do not use the JMS API. A byte[] value is used for this purpose. JMS providers without native correlation ID values are not required to support byte[] values. The use of a byte[] value for JMSCorrelationID is non-portable.

Parameters:

correlationID - the message ID of a message being referred to

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the correlation ID due to some internal error.

See Also:

getJMSCorrelationID(), getJMSCorrelationIDAsBytes(), setJMSCorrelationIDAsBytes(byte[])

getJMSCorrelationID

String getJMSCorrelationID()

Returns the JMSCorrelationID header value that has been set on this JMSProducer, as a String.

This method is used to return correlation ID values that are either provider-specific message IDs or application-specific String values.

Returns:

the correlation ID of a message as a String

Throws:

JMSRuntimeException - if the JMS provider fails to get the correlation ID due to some internal error.

See Also:

setJMSCorrelationID(String), getJMSCorrelationIDAsBytes(), setJMSCorrelationIDAsBytes(byte[])

setJMSType

JMSProducer setJMSType(String type)

Specifies that messages sent using this JMSProducer will have their JMSType header value set to the specified message type.

This will override any JMSType header value that is already set on the message being sent.

Some JMS providers use a message repository that contains the definitions of messages sent by applications. The JMSType header field may reference a message's definition in the provider's repository.

The JMS API does not define a standard message definition repository, nor does it define a naming policy for the definitions it contains.

Some messaging systems require that a message type definition for each application message be created and that each message specify its type. In order to work with such JMS providers, JMS clients should assign a value to JMSType, whether the application makes use of it or not. This ensures that the field is properly set for those providers that require it.

To ensure portability, JMS clients should use symbolic values for JMSType that can be configured at installation time to the values defined in the current provider's message repository. If string literals are used, they may not be valid type names for some JMS providers.

Parameters:

type - the message type

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the message type due to some internal error.

See Also:

getJMSType()

getJMSType

String getJMSType()

Returns the JMSType header value that has been set on this JMSProducer.

Returns:

the message type

Throws:

JMSRuntimeException - if the JMS provider fails to get the message type due to some internal error.

See Also:

setJMSType(String)

setJMSReplyTo

JMSProducer setJMSReplyTo(Destination replyTo)

Specifies that messages sent using this JMSProducer will have their JMSReplyTo header value set to the specified Destination object.

This will override any JMSReplyTo header value that is already set on the message being sent.

The JMSReplyTo header field contains the destination where a reply to the current message should be sent. If it is null, no reply is expected. The destination may be either a Queue object or a Topic object.

Messages sent with a null JMSReplyTo value may be a notification of some event, or they may just be some data the sender thinks is of interest.

Messages with a JMSReplyTo value typically expect a response. A response is optional; it is up to the client to decide. These messages are called requests. A message sent in response to a request is called a reply.

In some cases a client may wish to match a request it sent earlier with a reply it has just received. The client can use the JMSCorrelationID header field for this purpose.

Parameters:

replyTo - Destination to which to send a response to this message

Returns:

this JMSProducer

Throws:

JMSRuntimeException - if the JMS provider fails to set the JMSReplyTo destination due to some internal error.

See Also:

getJMSReplyTo()

getJMSReplyTo

Destination getJMSReplyTo()

Returns the JMSReplyTo header value that has been set on this JMSProducer.

Returns:

Destination the JMSReplyTo header value

Throws:

JMSRuntimeException - if the JMS provider fails to get the JMSReplyTo destination due to some internal error.

See Also:

setJMSReplyTo(Destination)