Package javax.jms

Interface TopicConnection

All Superinterfaces:

AutoCloseable, Connection

All Known Subinterfaces:

XATopicConnection

public interface TopicConnection
extends Connection

A TopicConnection object is an active connection to a publish/subscribe JMS provider. A client uses a TopicConnection object to create one or more TopicSession objects for producing and consuming messages.

A TopicConnection can be used to create a TopicSession, from which specialized topic-related objects can be created. A more general, and recommended approach is to use the Connection object.

The TopicConnection object should be used to support existing code.

Since:

JMS 1.0

See Also:

• Connection
• ConnectionFactory
• TopicConnectionFactory

Method Summary

Modifier and Type	Method	Description
ConnectionConsumer	createConnectionConsumer(Topic topic, String messageSelector, ServerSessionPool sessionPool, int maxMessages)	Creates a connection consumer for this connection (optional operation).
ConnectionConsumer	createDurableConnectionConsumer(Topic topic, String subscriptionName, String messageSelector, ServerSessionPool sessionPool, int maxMessages)	Create a durable connection consumer for this connection (optional operation).
TopicSession	createTopicSession(boolean transacted, int acknowledgeMode)	Creates a TopicSession object.

Methods inherited from interface javax.jms.Connection

close, createConnectionConsumer, createSession, createSession, createSession, createSharedConnectionConsumer, createSharedDurableConnectionConsumer, getClientID, getExceptionListener, getMetaData, setClientID, setExceptionListener, start, stop

Method Details

createTopicSession

TopicSession createTopicSession(boolean transacted,
 int acknowledgeMode)
                         throws JMSException

Creates a TopicSession object.

Parameters:

transacted - indicates whether the session is transacted

acknowledgeMode - indicates whether the consumer or the client will acknowledge any messages it receives; ignored if the session is transacted. Legal values are Session.AUTO_ACKNOWLEDGE, Session.CLIENT_ACKNOWLEDGE, and Session.DUPS_OK_ACKNOWLEDGE.

Returns:

a newly created topic session

Throws:

JMSException - if the TopicConnection object fails to create a session due to some internal error or lack of support for the specific transaction and acknowledgement mode.

See Also:

• Session.AUTO_ACKNOWLEDGE
• Session.CLIENT_ACKNOWLEDGE
• Session.DUPS_OK_ACKNOWLEDGE

createConnectionConsumer

ConnectionConsumer createConnectionConsumer(Topic topic,
 String messageSelector,
 ServerSessionPool sessionPool,
 int maxMessages)
                                     throws JMSException

Creates a connection consumer for this connection (optional operation). This is an expert facility not used by regular JMS clients.

Parameters:

topic - the topic to access

messageSelector - 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.

sessionPool - the server session pool to associate with this connection consumer

maxMessages - the maximum number of messages that can be assigned to a server session at one time

Returns:

the connection consumer

Throws:

JMSException - if the TopicConnection object fails to create a connection consumer due to some internal error or invalid arguments for sessionPool and messageSelector.

InvalidDestinationException - if an invalid topic is specified.

InvalidSelectorException - if the message selector is invalid.

See Also:

• ConnectionConsumer

createDurableConnectionConsumer

ConnectionConsumer createDurableConnectionConsumer(Topic topic,
 String subscriptionName,
 String messageSelector,
 ServerSessionPool sessionPool,
 int maxMessages)
                                            throws JMSException

Create a durable connection consumer for this connection (optional operation). This is an expert facility not used by regular JMS clients.

Specified by:

createDurableConnectionConsumer in interface Connection

Parameters:

topic - the topic to access

subscriptionName - durable subscription name

messageSelector - 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.

sessionPool - the server session pool to associate with this durable connection consumer

maxMessages - the maximum number of messages that can be assigned to a server session at one time

Returns:

the durable connection consumer

Throws:

JMSException - if the TopicConnection object fails to create a connection consumer due to some internal error or invalid arguments for sessionPool and messageSelector.

InvalidDestinationException - if an invalid topic is specified.

InvalidSelectorException - if the message selector is invalid.

See Also:

• ConnectionConsumer