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package javax.jms;
/** A <CODE>TopicConnection</CODE> object is an active connection to a
* publish/subscribe JMS provider. A client uses a <CODE>TopicConnection</CODE>
* object to create one or more <CODE>TopicSession</CODE> objects
* for producing and consuming messages.
*
*<P>A <CODE>TopicConnection</CODE> can be used to create a
*<CODE>TopicSession</CODE>, from which
* specialized topic-related objects can be created.
* A more general, and recommended approach is to use the
* <CODE>Connection</CODE> object.
*
*
* <P>The <CODE>TopicConnection</CODE> object
* should be used to support existing code.
*
* @version 1.1 - February 2, 2002
* @author Mark Hapner
* @author Rich Burridge
* @author Kate Stout
*
* @see javax.jms.Connection
* @see javax.jms.ConnectionFactory
* @see javax.jms.TopicConnectionFactory
*/
public interface TopicConnection extends Connection {
/** Creates a <CODE>TopicSession</CODE> object.
*
* @param transacted indicates whether the session is transacted
* @param acknowledgeMode indicates whether the consumer or the
* client will acknowledge any messages it receives; ignored if the session
* is transacted. Legal values are <code>Session.AUTO_ACKNOWLEDGE</code>,
* <code>Session.CLIENT_ACKNOWLEDGE</code>, and
* <code>Session.DUPS_OK_ACKNOWLEDGE</code>.
*
* @return a newly created topic session
*
* @exception JMSException if the <CODE>TopicConnection</CODE> object fails
* to create a session due to some internal error or
* lack of support for the specific transaction
* and acknowledgement mode.
*
* @see Session#AUTO_ACKNOWLEDGE
* @see Session#CLIENT_ACKNOWLEDGE
* @see Session#DUPS_OK_ACKNOWLEDGE
*/
TopicSession
createTopicSession(boolean transacted,
int acknowledgeMode) throws JMSException;
/** Creates a connection consumer for this connection (optional operation).
* This is an expert facility not used by regular JMS clients.
*
* @param topic the topic to access
* @param 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.
* @param sessionPool the server session pool to associate with this
* connection consumer
* @param maxMessages the maximum number of messages that can be
* assigned to a server session at one time
*
* @return the connection consumer
*
* @exception JMSException if the <CODE>TopicConnection</CODE> object fails
* to create a connection consumer due to some
* internal error or invalid arguments for
* <CODE>sessionPool</CODE> and
* <CODE>messageSelector</CODE>.
* @exception InvalidDestinationException if an invalid topic is specified.
* @exception InvalidSelectorException if the message selector is invalid.
* @see javax.jms.ConnectionConsumer
*/
ConnectionConsumer
createConnectionConsumer(Topic topic,
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.
*
* @param topic the topic to access
* @param subscriptionName durable subscription name
* @param 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.
* @param sessionPool the server session pool to associate with this
* durable connection consumer
* @param maxMessages the maximum number of messages that can be
* assigned to a server session at one time
*
* @return the durable connection consumer
*
* @exception JMSException if the <CODE>TopicConnection</CODE> object fails
* to create a connection consumer due to some
* internal error or invalid arguments for
* <CODE>sessionPool</CODE> and
* <CODE>messageSelector</CODE>.
* @exception InvalidDestinationException if an invalid topic is specified.
* @exception InvalidSelectorException if the message selector is invalid.
* @see javax.jms.ConnectionConsumer
*/
ConnectionConsumer
createDurableConnectionConsumer(Topic topic,
String subscriptionName,
String messageSelector,
ServerSessionPool sessionPool,
int maxMessages)
throws JMSException;
}
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