Class ActiveMQRASession
- All Implemented Interfaces:
QueueSession,Session,TopicSession,XAQueueSession,XASession,XATopicSession,AutoCloseable,Runnable
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Field Summary
Fields inherited from interface jakarta.jms.Session
AUTO_ACKNOWLEDGE, CLIENT_ACKNOWLEDGE, DUPS_OK_ACKNOWLEDGE, SESSION_TRANSACTED -
Constructor Summary
ConstructorsConstructorDescription -
Method Summary
Modifier and TypeMethodDescriptionvoidvoidclose()Closes the session.voidcommit()Commits all messages done in this transaction and releases any locks currently held.createBrowser(Queue queue) Creates aQueueBrowserobject to peek at the messages on the specified queue.createBrowser(Queue queue, String messageSelector) Creates aQueueBrowserobject to peek at the messages on the specified queue using a message selector.Creates aBytesMessageobject.createConsumer(Destination destination) Creates aMessageConsumerfor the specified destination.createConsumer(Destination destination, String messageSelector) Creates aMessageConsumerfor the specified destination, using a message selector.createConsumer(Destination destination, String messageSelector, boolean noLocal) Creates aMessageConsumerfor the specified destination, specifying a message selector and thenoLocalparameter.createDurableConsumer(Topic topic, String name) Creates an unshared durable subscription on the specified topic (if one does not already exist) and creates a consumer on that durable subscription.createDurableConsumer(Topic topic, String name, String messageSelector, boolean noLocal) Creates an unshared durable subscription on the specified topic (if one does not already exist), specifying a message selector and thenoLocalparameter, and creates a consumer on that durable subscription.createDurableSubscriber(Topic topic, String name) Creates an unshared durable subscription on the specified topic (if one does not already exist) and creates a consumer on that durable subscription.createDurableSubscriber(Topic topic, String name, String messageSelector, boolean noLocal) Creates an unshared durable subscription on the specified topic (if one does not already exist), specifying a message selector and thenoLocalparameter, and creates a consumer on that durable subscription.Creates aMapMessageobject.Creates aMessageobject.Creates anObjectMessageobject.createObjectMessage(Serializable object) Creates an initializedObjectMessageobject.createProducer(Destination destination) Creates aMessageProducerto send messages to the specified destination.createPublisher(Topic topic) Creates a publisher for the specified topic.createQueue(String queueName) Creates a queue identity given aQueuename.createReceiver(Queue queue) Creates aQueueReceiverobject to receive messages from the specified queue.createReceiver(Queue queue, String messageSelector) Creates aQueueReceiverobject to receive messages from the specified queue using a message selector.createSender(Queue queue) Creates aQueueSenderobject to send messages to the specified queue.createSharedConsumer(Topic topic, String sharedSubscriptionName) Creates a shared non-durable subscription with the specified name on the specified topic (if one does not already exist) and creates a consumer on that subscription.createSharedConsumer(Topic topic, String sharedSubscriptionName, String messageSelector) Creates a shared non-durable subscription with the specified name on the specified topic (if one does not already exist) specifying a message selector, and creates a consumer on that subscription.createSharedDurableConsumer(Topic topic, String name) Creates a shared durable subscription on the specified topic (if one does not already exist), specifying a message selector and thenoLocalparameter, and creates a consumer on that durable subscription.createSharedDurableConsumer(Topic topic, String name, String messageSelector) Creates a shared durable subscription on the specified topic (if one does not already exist), specifying a message selector, and creates a consumer on that durable subscription.Creates aStreamMessageobject.createSubscriber(Topic topic) Creates a nondurable subscriber to the specified topic.createSubscriber(Topic topic, String messageSelector, boolean noLocal) Creates a nondurable subscriber to the specified topic, using a message selector or specifying whether messages published by its own connection should be delivered to it.Creates aTemporaryQueueobject.Creates aTemporaryTopicobject.Creates aTextMessageobject.createTextMessage(String string) Creates an initializedTextMessageobject.createTopic(String topicName) Creates aTopicobject which encapsulates a specified provider-specific topic name.intReturns the acknowledgement mode of the session.for tests onlyReturns the session's distinguished message listener (optional).Returns the ID of the Node that this session is associated with..Gets the queue session associated with thisXAQueueSession.Gets the session associated with thisXASession.Gets the topic session associated with thisXATopicSession.booleanIndicates whether the session is in transacted mode.Returns an XA resource to the caller.protected voidlock()Lockvoidrecover()Stops message delivery in this session, and restarts message delivery with the oldest unacknowledged message.voidrollback()Rolls back any messages done in this transaction and releases any locks currently held.voidrun()Optional operation, intended to be used only by Application Servers, not by ordinary Jakarta Messaging clients.voidvoidsetMessageListener(MessageListener listener) Sets the session's distinguished message listener (optional).protected voidunlock()Unlockvoidunsubscribe(String name) Unsubscribes a durable subscription that has been created by a client.
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Constructor Details
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ActiveMQRASession
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Method Details
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setActiveMQSessionFactory
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lock
Lock- Throws:
JMSException- Thrown if an error occursIllegalStateException- The session is closed
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unlock
protected void unlock()Unlock -
createBytesMessage
Creates aBytesMessageobject. ABytesMessageobject is used to send a message containing a stream of uninterpreted bytes.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createBytesMessagein interfaceSession- Returns:
- A
BytesMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createMapMessage
Creates aMapMessageobject. AMapMessageobject is used to send a self-defining set of name-value pairs, where names areStringobjects and values are primitive values in the Java programming language.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createMapMessagein interfaceSession- Returns:
- A
MapMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createMessage
Creates aMessageobject. TheMessageinterface is the root interface of all Jakarta Messaging messages. AMessageobject holds all the standard message header information. It can be sent when a message containing only header information is sufficient.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createMessagein interfaceSession- Returns:
- A
Messageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createObjectMessage
Creates anObjectMessageobject. AnObjectMessageobject is used to send a message that contains a serializable Java object.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createObjectMessagein interfaceSession- Returns:
- A
ObjectMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createObjectMessage
Creates an initializedObjectMessageobject. AnObjectMessageobject is used to send a message that contains a serializable Java object.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createObjectMessagein interfaceSession- Parameters:
object- the object to use to initialize this message- Returns:
- A
ObjectMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createStreamMessage
Creates aStreamMessageobject. AStreamMessageobject is used to send a self-defining stream of primitive values in the Java programming language.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createStreamMessagein interfaceSession- Returns:
- A
StreamMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createTextMessage
Creates aTextMessageobject. ATextMessageobject is used to send a message containing aStringobject.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createTextMessagein interfaceSession- Returns:
- A
TextMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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createTextMessage
Creates an initializedTextMessageobject. ATextMessageobject is used to send a message containing aString.The message object returned may be sent using any
SessionorJMSContext. It is not restricted to being sent using theJMSContextused to create it.The message object returned may be optimised for use with the Jakarta Messaging provider used to create it. However it can be sent using any Jakarta Messaging provider, not just the Jakarta Messaging provider used to create it.
- Specified by:
createTextMessagein interfaceSession- Parameters:
string- the string used to initialize this message- Returns:
- A
TextMessageobject. - Throws:
JMSException- if the Jakarta Messaging provider fails to create this message due to some internal error.
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getTransacted
Indicates whether the session is in transacted mode.- Specified by:
getTransactedin interfaceSession- Specified by:
getTransactedin interfaceXASession- Returns:
- true if the session is in transacted mode
- Throws:
JMSException- if the Jakarta Messaging provider fails to return the transaction mode due to some internal error.
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getMessageListener
Returns the session's distinguished message listener (optional).This method must not be used in a Jakarta EE web or EJB application. Doing so may cause a
JMSExceptionto be thrown though this is not guaranteed.- Specified by:
getMessageListenerin interfaceSession- Returns:
- the distinguished message listener associated with this session
- Throws:
JMSException- if the Jakarta Messaging provider fails to get the session's distinguished message listener for one of the following reasons:- an internal error has occurred
- this method has been called in a Jakarta EE web or EJB application (though it is not guaranteed that an exception is thrown in this case)
- See Also:
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setMessageListener
Sets the session's distinguished message listener (optional).When the distinguished message listener is set, no other form of message receipt in the session can be used; however, all forms of sending messages are still supported.
This is an expert facility not used by ordinary Jakarta Messaging clients.
This method must not be used in a Jakarta EE web or EJB application. Doing so may cause a
JMSExceptionto be thrown though this is not guaranteed.- Specified by:
setMessageListenerin interfaceSession- Parameters:
listener- the message listener to associate with this session- Throws:
JMSException- if the Jakarta Messaging provider fails to set the session's distinguished message listener for one of the following reasons:- an internal error has occurred
- this method has been called in a Jakarta EE web or EJB application (though it is not guaranteed that an exception is thrown in this case)
- See Also:
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run
public void run()Optional operation, intended to be used only by Application Servers, not by ordinary Jakarta Messaging clients.This method must not be used in a Jakarta EE web or EJB application. Doing so may cause a
JMSRuntimeExceptionto be thrown though this is not guaranteed. -
close
Closes the session.Since a provider may allocate some resources on behalf of a session outside the JVM, clients should close the resources when they are not needed. Relying on garbage collection to eventually reclaim these resources may not be timely enough.
There is no need to close the producers and consumers of a closed session.
This call will block until a
receivecall or message listener in progress has completed. A blocked message consumerreceivecall returnsnullwhen this session is closed.However if the close method is called from a message listener on its own
Session, then it will either fail and throw ajakarta.jms.IllegalStateException, or it will succeed and close theSession, blocking until any pending receive call in progress has completed. If close succeeds and the acknowledge mode of theSessionis set toAUTO_ACKNOWLEDGE, the current message will still be acknowledged automatically when theonMessagecall completes.Since two alternative behaviors are permitted in this case, applications should avoid calling close from a message listener on its own
Sessionbecause this is not portable.This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
For the avoidance of doubt, if an exception listener for this session's connection is running when
closeis invoked, there is no requirement for theclosecall to wait until the exception listener has returned before it may return.Closing a transacted session must roll back the transaction in progress.
This method is the only
Sessionmethod that can be called concurrently.A CompletionListener callback method must not call close on its own Session. Doing so will cause an IllegalStateException to be thrown.
Invoking any other
Sessionmethod on a closed session must throw aIllegalStateException. Closing a closed session must not throw an exception.- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceSession- Throws:
IllegalStateException-- this method has been called by a MessageListener on its own Session
- this method has been called by a CompletionListener callback method on its own Session
JMSException- if the Jakarta Messaging provider fails to close the session due to some internal error.
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commit
Commits all messages done in this transaction and releases any locks currently held.This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
A CompletionListener callback method must not call commit on its own Session. Doing so will cause an IllegalStateException to be thrown.
- Specified by:
commitin interfaceSession- Specified by:
commitin interfaceXASession- Throws:
IllegalStateException-- the session is not using a local transaction
- this method has been called by a CompletionListener callback method on its own Session
JMSException- if the Jakarta Messaging provider fails to commit the transaction due to some internal error.TransactionRolledBackException- if the transaction is rolled back due to some internal error during commit.
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rollback
Rolls back any messages done in this transaction and releases any locks currently held.This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
A CompletionListener callback method must not call commit on its own Session. Doing so will cause an IllegalStateException to be thrown.
- Specified by:
rollbackin interfaceSession- Specified by:
rollbackin interfaceXASession- Throws:
IllegalStateException-- the session is not using a local transaction
- this method has been called by a CompletionListener callback method on its own Session
JMSException- if the Jakarta Messaging provider fails to roll back the transaction due to some internal error.
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recover
Stops message delivery in this session, and restarts message delivery with the oldest unacknowledged message.All consumers deliver messages in a serial order. Acknowledging a received message automatically acknowledges all messages that have been delivered to the client.
Restarting a session causes it to take the following actions:
- Stop message delivery
- Mark all messages that might have been delivered but not acknowledged as "redelivered"
- Restart the delivery sequence including all unacknowledged messages that had been previously delivered. Redelivered messages do not have to be delivered in exactly their original delivery order.
- Specified by:
recoverin interfaceSession- Throws:
JMSException- if the Jakarta Messaging provider fails to stop and restart message delivery due to some internal error.IllegalStateException- if the method is called by a transacted session.
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createTopic
Creates aTopicobject which encapsulates a specified provider-specific topic name.The use of provider-specific topic names in an application may render the application non-portable. Portable applications are recommended to not use this method but instead look up an administratively-defined
Topicobject using JNDI.Note that this method simply creates an object that encapsulates the name of a topic. It does not create the physical topic in the Jakarta Messaging provider. Jakarta Messaging does not provide a method to create the physical topic, since this would be specific to a given Jakarta Messaging provider. Creating a physical topic is provider-specific and is typically an administrative task performed by an administrator, though some providers may create them automatically when needed. The one exception to this is the creation of a temporary topic, which is done using the
createTemporaryTopicmethod.- Specified by:
createTopicin interfaceSession- Specified by:
createTopicin interfaceTopicSession- Parameters:
topicName- A provider-specific topic name- Returns:
- a Topic object which encapsulates the specified name
- Throws:
JMSException- if a Topic object cannot be created due to some internal error
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createSubscriber
Creates a nondurable subscriber to the specified topic.A client uses a
TopicSubscriberobject to receive messages that have been published to a topic.Regular
TopicSubscriberobjects are not durable. They receive only messages that are published while they are active.In some cases, a connection may both publish and subscribe to a topic. The subscriber
NoLocalattribute allows a subscriber to inhibit the delivery of messages published by its own connection. The default value for this attribute is false.- Specified by:
createSubscriberin interfaceTopicSession- Parameters:
topic- theTopicto subscribe to- Returns:
- A nondurable subscriber to the specified topic.
- Throws:
JMSException- if the session fails to create a subscriber due to some internal error.InvalidDestinationException- if an invalid topic is specified.
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createSubscriber
public TopicSubscriber createSubscriber(Topic topic, String messageSelector, boolean noLocal) throws JMSException Creates a nondurable subscriber to the specified topic, using a message selector or specifying whether messages published by its own connection should be delivered to it.A client uses a
TopicSubscriberobject to receive messages that have been published to a topic.Regular
TopicSubscriberobjects are not durable. They receive only messages that are published while they are active.Messages filtered out by a subscriber's message selector will never be delivered to the subscriber. From the subscriber's perspective, they do not exist.
In some cases, a connection may both publish and subscribe to a topic. The subscriber
NoLocalattribute allows a subscriber to inhibit the delivery of messages published by its own connection. The default value for this attribute is false.- Specified by:
createSubscriberin interfaceTopicSession- Parameters:
topic- theTopicto subscribe tomessageSelector- only messages with properties matching the message selector expression are delivered. A value of null or an empty string indicates that there is no message selector for the message consumer.noLocal- if set, inhibits the delivery of messages published by its own connection- Returns:
- A nondurable subscriber to the specified topic.
- Throws:
JMSException- if the session fails to create a subscriber due to some internal error.InvalidDestinationException- if an invalid topic is specified.InvalidSelectorException- if the message selector is invalid.
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createDurableSubscriber
Creates an unshared durable subscription on the specified topic (if one does not already exist) and creates a consumer on that durable subscription. This method creates the durable subscription without a message selector and with anoLocalvalue offalse.A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The Jakarta Messaging provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
A durable subscription will continue to accumulate messages until it is deleted using the
unsubscribemethod.This method may only be used with unshared durable subscriptions. Any durable subscription created using this method will be unshared. This means that only one active (i.e. not closed) consumer on the subscription may exist at a time. The term "consumer" here means a
TopicSubscriber,MessageConsumerorJMSConsumerobject in any client.An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
If an unshared durable subscription already exists with the same name and client identifier, and the same topic, message selector and
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this method creates aTopicSubscriberon the existing durable subscription.If an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active (i.e. not closed) on the durable subscription, then a
JMSExceptionwill be thrown.If an unshared durable subscription already exists with the same name and client identifier but a different topic, message selector or
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.A shared durable subscription and an unshared durable subscription may not have the same name and client identifier. If a shared durable subscription already exists with the same name and client identifier then a
JMSExceptionis thrown.There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
This method is identical to the corresponding
createDurableConsumermethod except that it returns aTopicSubscriberrather than aMessageConsumerto represent the consumer.- Specified by:
createDurableSubscriberin interfaceSession- Specified by:
createDurableSubscriberin interfaceTopicSession- Parameters:
topic- the non-temporaryTopicto subscribe toname- the name used to identify this subscription- Returns:
- An unshared durable subscription on the specified topic.
- Throws:
InvalidDestinationException- if an invalid topic is specified.IllegalStateException- if the client identifier is unsetJMSException-- if the session fails to create the unshared durable subscription and
TopicSubscriberdue to some internal error - if an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active
- if a shared durable subscription already exists with the same name and client identifier
- if the session fails to create the unshared durable subscription and
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createDurableSubscriber
public TopicSubscriber createDurableSubscriber(Topic topic, String name, String messageSelector, boolean noLocal) throws JMSException Creates an unshared durable subscription on the specified topic (if one does not already exist), specifying a message selector and thenoLocalparameter, and creates a consumer on that durable subscription.A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The Jakarta Messaging provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
A durable subscription will continue to accumulate messages until it is deleted using the
unsubscribemethod.This method may only be used with unshared durable subscriptions. Any durable subscription created using this method will be unshared. This means that only one active (i.e. not closed) consumer on the subscription may exist at a time. The term "consumer" here means a
TopicSubscriber,MessageConsumerorJMSConsumerobject in any client.An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
If an unshared durable subscription already exists with the same name and client identifier, and the same topic, message selector and
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this method creates aTopicSubscriberon the existing durable subscription.If an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active (i.e. not closed) on the durable subscription, then a
JMSExceptionwill be thrown.If an unshared durable subscription already exists with the same name and client identifier but a different topic, message selector or
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.If
noLocalis set to true then any messages published to the topic using this session's connection, or any other connection with the same client identifier, will not be added to the durable subscription.A shared durable subscription and an unshared durable subscription may not have the same name and client identifier. If a shared durable subscription already exists with the same name and client identifier then a
JMSExceptionis thrown.There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
This method is identical to the corresponding
createDurableConsumermethod except that it returns aTopicSubscriberrather than aMessageConsumerto represent the consumer.- Specified by:
createDurableSubscriberin interfaceSession- Specified by:
createDurableSubscriberin interfaceTopicSession- Parameters:
topic- the non-temporaryTopicto subscribe toname- the name used to identify this subscriptionmessageSelector- only messages with properties matching the message selector expression are added to the durable subscription. A value of null or an empty string indicates that there is no message selector for the durable subscription.noLocal- if true then any messages published to the topic using this session's connection, or any other connection with the same client identifier, will not be added to the durable subscription.- Returns:
- An unshared durable subscription on the specified topic.
- Throws:
InvalidDestinationException- if an invalid topic is specified.InvalidSelectorException- if the message selector is invalid.IllegalStateException- if the client identifier is unsetJMSException-- if the session fails to create the unshared durable subscription and
TopicSubscriberdue to some internal error - if an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active
- if a shared durable subscription already exists with the same name and client identifier
- if the session fails to create the unshared durable subscription and
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createPublisher
Creates a publisher for the specified topic.A client uses a
TopicPublisherobject to publish messages on a topic. Each time a client creates aTopicPublisheron a topic, it defines a new sequence of messages that have no ordering relationship with the messages it has previously sent.- Specified by:
createPublisherin interfaceTopicSession- Parameters:
topic- theTopicto publish to, or null if this is an unidentified producer- Returns:
- A publisher for the specified topic.
- Throws:
JMSException- if the session fails to create a publisher due to some internal error.InvalidDestinationException- if an invalid topic is specified.
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createTemporaryTopic
Creates aTemporaryTopicobject. Its lifetime will be that of theConnectionunless it is deleted earlier.- Specified by:
createTemporaryTopicin interfaceSession- Specified by:
createTemporaryTopicin interfaceTopicSession- Returns:
- a temporary topic identity
- Throws:
JMSException- if the session fails to create a temporary topic due to some internal error.
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unsubscribe
Unsubscribes a durable subscription that has been created by a client.This method deletes the state being maintained on behalf of the subscriber by its provider.
A durable subscription is identified by a name specified by the client and by the client identifier if set. If the client identifier was set when the durable subscription was created then a client which subsequently wishes to use this method to delete a durable subscription must use the same client identifier.
It is erroneous for a client to delete a durable subscription while there is an active (not closed) consumer for the subscription, or while a consumed message is part of a pending transaction or has not been acknowledged in the session.
- Specified by:
unsubscribein interfaceSession- Specified by:
unsubscribein interfaceTopicSession- Parameters:
name- the name used to identify this subscription- Throws:
JMSException- if the session fails to unsubscribe to the durable subscription due to some internal error.InvalidDestinationException- if an invalid subscription name is specified.
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createBrowser
Creates aQueueBrowserobject to peek at the messages on the specified queue.- Specified by:
createBrowserin interfaceQueueSession- Specified by:
createBrowserin interfaceSession- Parameters:
queue- theQueueto access- Returns:
- A
QueueBrowserobject to peek at the messages. - Throws:
JMSException- if the session fails to create a browser due to some internal error.InvalidDestinationException- if an invalid queue is specified.
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createBrowser
Creates aQueueBrowserobject to peek at the messages on the specified queue using a message selector.- Specified by:
createBrowserin interfaceQueueSession- Specified by:
createBrowserin interfaceSession- Parameters:
queue- theQueueto accessmessageSelector- only messages with properties matching the message selector expression are delivered. A value of null or an empty string indicates that there is no message selector for the message consumer.- Returns:
- A
QueueBrowserobject to peek at the messages on the specified queue. - Throws:
JMSException- if the session fails to create a browser due to some internal error.InvalidDestinationException- if an invalid queue is specified.InvalidSelectorException- if the message selector is invalid.
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createQueue
Creates a queue identity given aQueuename.This facility is provided for the rare cases where clients need to dynamically manipulate queue identity. It allows the creation of a queue identity with a provider-specific name. Clients that depend on this ability are not portable.
Note that this method is not for creating the physical queue. The physical creation of queues is an administrative task and is not to be initiated by the Jakarta Messaging API. The one exception is the creation of temporary queues, which is accomplished with the
createTemporaryQueuemethod.- Specified by:
createQueuein interfaceQueueSession- Specified by:
createQueuein interfaceSession- Parameters:
queueName- the name of thisQueue- Returns:
- a
Queuewith the given name - Throws:
JMSException- if the session fails to create a queue due to some internal error.
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createReceiver
Creates aQueueReceiverobject to receive messages from the specified queue.- Specified by:
createReceiverin interfaceQueueSession- Parameters:
queue- theQueueto access- Returns:
- A
QueueReceiverobject to receive messages from the specified queue - Throws:
JMSException- if the session fails to create a receiver due to some internal error.InvalidDestinationException- if an invalid queue is specified.
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createReceiver
Creates aQueueReceiverobject to receive messages from the specified queue using a message selector.- Specified by:
createReceiverin interfaceQueueSession- Parameters:
queue- theQueueto accessmessageSelector- only messages with properties matching the message selector expression are delivered. A value of null or an empty string indicates that there is no message selector for the message consumer.- Returns:
- A
QueueReceiverobject to receive messages from the specified queue - Throws:
JMSException- if the session fails to create a receiver due to some internal error.InvalidDestinationException- if an invalid queue is specified.InvalidSelectorException- if the message selector is invalid.
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createSender
Creates aQueueSenderobject to send messages to the specified queue.- Specified by:
createSenderin interfaceQueueSession- Parameters:
queue- theQueueto access, or null if this is an unidentified producer- Returns:
- A
QueueSenderobject to send messages to the specified queue. - Throws:
JMSException- if the session fails to create a sender due to some internal error.InvalidDestinationException- if an invalid queue is specified.
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createTemporaryQueue
Creates aTemporaryQueueobject. Its lifetime will be that of theQueueConnectionunless it is deleted earlier.- Specified by:
createTemporaryQueuein interfaceQueueSession- Specified by:
createTemporaryQueuein interfaceSession- Returns:
- a temporary queue identity
- Throws:
JMSException- if the session fails to create a temporary queue due to some internal error.
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createConsumer
Creates aMessageConsumerfor the specified destination. SinceQueueandTopicboth inherit fromDestination, they can be used in the destination parameter to create aMessageConsumer.- Specified by:
createConsumerin interfaceSession- Parameters:
destination- theDestinationto access.- Returns:
- A
MessageConsumerfor the specified destination. - Throws:
JMSException- if the session fails to create a consumer due to some internal error.InvalidDestinationException- if an invalid destination is specified.
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createConsumer
public MessageConsumer createConsumer(Destination destination, String messageSelector) throws JMSException Creates aMessageConsumerfor the specified destination, using a message selector. SinceQueueandTopicboth inherit fromDestination, they can be used in the destination parameter to create aMessageConsumer.A client uses a
MessageConsumerobject to receive messages that have been sent to a destination.- Specified by:
createConsumerin interfaceSession- Parameters:
destination- theDestinationto accessmessageSelector- only messages with properties matching the message selector expression are delivered. A value of null or an empty string indicates that there is no message selector for the message consumer.- Returns:
- A
MessageConsumerfor the specified destination. - Throws:
JMSException- if the session fails to create a MessageConsumer due to some internal error.InvalidDestinationException- if an invalid destination is specified.InvalidSelectorException- if the message selector is invalid.
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createConsumer
public MessageConsumer createConsumer(Destination destination, String messageSelector, boolean noLocal) throws JMSException Creates aMessageConsumerfor the specified destination, specifying a message selector and thenoLocalparameter.Since
QueueandTopicboth inherit fromDestination, they can be used in the destination parameter to create aMessageConsumer.A client uses a
MessageConsumerobject to receive messages that have been published to a destination.The
noLocalargument is for use when the destination is a topic and the session's connection is also being used to publish messages to that topic. IfnoLocalis set to true then theMessageConsumerwill not receive messages published to the topic by its own connection. The default value of this argument is false. If the destination is a queue then the effect of settingnoLocalto true is not specified.- Specified by:
createConsumerin interfaceSession- Parameters:
destination- theDestinationto accessmessageSelector- only messages with properties matching the message selector expression are delivered. A value of null or an empty string indicates that there is no message selector for the message consumer.noLocal- - if true, and the destination is a topic, then theMessageConsumerwill not receive messages published to the topic by its own connection.- Returns:
- A
MessageConsumerfor the specified destination. - Throws:
JMSException- if the session fails to create a MessageConsumer due to some internal error.InvalidDestinationException- if an invalid destination is specified.InvalidSelectorException- if the message selector is invalid.
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createProducer
Creates aMessageProducerto send messages to the specified destination.A client uses a
MessageProducerobject to send messages to a destination. SinceQueueandTopicboth inherit fromDestination, they can be used in the destination parameter to create aMessageProducerobject.- Specified by:
createProducerin interfaceSession- Parameters:
destination- theDestinationto send to, or null if this is a producer which does not have a specified destination.- Returns:
- A
MessageProducerto send messages. - Throws:
JMSException- if the session fails to create a MessageProducer due to some internal error.InvalidDestinationException- if an invalid destination is specified.
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getAcknowledgeMode
Returns the acknowledgement mode of the session. The acknowledgement mode is set at the time that the session is created. If the session is transacted, the acknowledgement mode is ignored.- Specified by:
getAcknowledgeModein interfaceSession- Returns:
- If the session is not transacted, returns the current acknowledgement mode for the session. If the session is transacted, returns SESSION_TRANSACTED.
- Throws:
JMSException- if the Jakarta Messaging provider fails to return the acknowledgment mode due to some internal error.- See Also:
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getXAResource
Returns an XA resource to the caller.- Specified by:
getXAResourcein interfaceXASession- Returns:
- an XA resource to the caller
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getNodeId
Returns the ID of the Node that this session is associated with..- Returns:
- the ID of the Node that this session is associated with.
- Throws:
JMSException
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getSession
Gets the session associated with thisXASession.- Specified by:
getSessionin interfaceXASession- Returns:
- the session object
- Throws:
JMSException- if an internal error occurs.
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getQueueSession
Gets the queue session associated with thisXAQueueSession.- Specified by:
getQueueSessionin interfaceXAQueueSession- Returns:
- the queue session object
- Throws:
JMSException- if an internal error occurs.
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getTopicSession
Gets the topic session associated with thisXATopicSession.- Specified by:
getTopicSessionin interfaceXATopicSession- Returns:
- the topic session object
- Throws:
JMSException- if an internal error occurs.
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createDurableConsumer
Description copied from interface:SessionCreates an unshared durable subscription on the specified topic (if one does not already exist) and creates a consumer on that durable subscription. This method creates the durable subscription without a message selector and with anoLocalvalue offalse.A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The Jakarta Messaging provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
A durable subscription will continue to accumulate messages until it is deleted using the
unsubscribemethod.This method may only be used with unshared durable subscriptions. Any durable subscription created using this method will be unshared. This means that only one active (i.e. not closed) consumer on the subscription may exist at a time. The term "consumer" here means a
TopicSubscriber,MessageConsumerorJMSConsumerobject in any client.An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
If an unshared durable subscription already exists with the same name and client identifier, and the same topic, message selector and
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this method creates aMessageConsumeron the existing durable subscription.If an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active (i.e. not closed) on the durable subscription, then a
JMSExceptionwill be thrown.If an unshared durable subscription already exists with the same name and client identifier but a different topic, message selector or
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.A shared durable subscription and an unshared durable subscription may not have the same name and client identifier. If a shared durable subscription already exists with the same name and client identifier then a
JMSExceptionis thrown.There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
This method is identical to the corresponding
createDurableSubscribermethod except that it returns aMessageConsumerrather than aTopicSubscriberto represent the consumer.- Specified by:
createDurableConsumerin interfaceSession- Parameters:
topic- the non-temporaryTopicto subscribe toname- the name used to identify this subscription- Returns:
- An unshared durable subscription on the specified topic.
- Throws:
InvalidDestinationException- if an invalid topic is specified.IllegalStateException- if the client identifier is unsetJMSException-- if the session fails to create the unshared durable subscription and
MessageConsumerdue to some internal error - if an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active
- if a shared durable subscription already exists with the same name and client identifier
- if the session fails to create the unshared durable subscription and
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createDurableConsumer
public MessageConsumer createDurableConsumer(Topic topic, String name, String messageSelector, boolean noLocal) throws JMSException Description copied from interface:SessionCreates an unshared durable subscription on the specified topic (if one does not already exist), specifying a message selector and thenoLocalparameter, and creates a consumer on that durable subscription.A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The Jakarta Messaging provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
A durable subscription will continue to accumulate messages until it is deleted using the
unsubscribemethod.This method may only be used with unshared durable subscriptions. Any durable subscription created using this method will be unshared. This means that only one active (i.e. not closed) consumer on the subscription may exist at a time. The term "consumer" here means a
TopicSubscriber,MessageConsumerorJMSConsumerobject in any client.An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
If an unshared durable subscription already exists with the same name and client identifier, and the same topic, message selector and
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this method creates aMessageConsumeron the existing durable subscription.If an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active (i.e. not closed) on the durable subscription, then a
JMSExceptionwill be thrown.If an unshared durable subscription already exists with the same name and client identifier but a different topic, message selector or
noLocalvalue has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.If
noLocalis set to true then any messages published to the topic using this session's connection, or any other connection with the same client identifier, will not be added to the durable subscription.A shared durable subscription and an unshared durable subscription may not have the same name and client identifier. If a shared durable subscription already exists with the same name and client identifier then a
JMSExceptionis thrown.There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
This method is identical to the corresponding
createDurableSubscribermethod except that it returns aMessageConsumerrather than aTopicSubscriberto represent the consumer.- Specified by:
createDurableConsumerin interfaceSession- Parameters:
topic- the non-temporaryTopicto subscribe toname- the name used to identify this subscriptionmessageSelector- only messages with properties matching the message selector expression are added to the durable subscription. A value of null or an empty string indicates that there is no message selector for the durable subscription.noLocal- if true then any messages published to the topic using this session's connection, or any other connection with the same client identifier, will not be added to the durable subscription.- Returns:
- An unshared durable subscription on the specified topic.
- Throws:
InvalidDestinationException- if an invalid topic is specified.InvalidSelectorException- if the message selector is invalid.IllegalStateException- if the client identifier is unsetJMSException-- if the session fails to create the unshared durable subscription and
MessageConsumerdue to some internal error - if an unshared durable subscription already exists with the same name and client identifier, and there is a consumer already active
- if a shared durable subscription already exists with the same name and client identifier
- if the session fails to create the unshared durable subscription and
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getManagedConnection
for tests only -
checkState
- Throws:
JMSException
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