Package com.swiftmq.swiftlet.topic

Class TopicManager

java.lang.Object

com.swiftmq.swiftlet.Swiftlet

com.swiftmq.swiftlet.topic.TopicManager

public abstract class TopicManager
extends Swiftlet

The TopicManager manages topics. A topic can be hierarchical, e.g. 'iit.sales.eu'. Every topic has an associated queue which is returned on getQueueForTopic(). This queue is used to publish messages inside of queue transactions. Subsciptions are mapped either to temporary queues (non-durable) or a durable subscriber queue.

Author:

IIT GmbH, Bremen/Germany, Copyright (c) 2000-2002, All Rights Reserved

Field Summary

Fields inherited from class com.swiftmq.swiftlet.Swiftlet

STATE_ACTIVE, STATE_INACTIVE, STATE_STANDBY

Constructor Summary

Constructors

Constructor	Description
TopicManager()

Method Summary

Modifier and Type	Method	Description
abstract void	createTopic(String topicName)	Creates a topic.
abstract void	deleteDurable(String durableName, ActiveLogin activeLogin)	Delete a durable subscriber.
abstract void	deleteTopic(String topicName)	Deletes a topic.
abstract String	getDurableTopicName(String durableName, ActiveLogin activeLogin)	Returns the topic name for which the durable subscriber is subcribed
String	getQueueForTopic(String topicName)	Returns the name of the topic queue for publish.
protected abstract String	getTopicDelimiter()	Returns the delimiter for hierarchical topics, e.g.
abstract String[]	getTopicNames()	Returns all defined topic names.
protected abstract String	getTopicQueuePrefix()	Returns the prefix for topic queues, e.g.
abstract boolean	isTopicDefined(String topicName)	Returns whether a topic with that name is defined or not.
abstract int	subscribe(TopicImpl topic, Selector selector, boolean noLocal, String queueName, ActiveLogin activeLogin)	Subscribes to a topic.
abstract int	subscribe(TopicImpl topic, Selector selector, boolean noLocal, String queueName, ActiveLogin activeLogin, boolean forceCopy)	Subscribes to a topic.
int	subscribe(String topicName, Selector selector, boolean noLocal, String queueName)	Subscribes to a topic.
int	subscribe(String topicName, Selector selector, boolean noLocal, String queueName, boolean forceCopy)	Subscribes to a topic.
int	subscribe(String topicName, Selector selector, boolean noLocal, String queueName, ActiveLogin activeLogin)	Subscribes to a topic.
abstract String	subscribeDurable(String durableName, TopicImpl topic, Selector selector, boolean noLocal, ActiveLogin activeLogin)	Subscribe as durable subscriber.
String[]	tokenizeTopicName(String topicName)	Tokenizes a hierachical topic name by the default delimiter.
String[]	tokenizeTopicName(String topicName, String delimiter)	Tokenizes a hierachical topic name by the delimiter.
abstract void	unsubscribe(int subscriberId)	Unsubscribe a non-durable subscription.
abstract TopicImpl	verifyTopic(TopicImpl topic)	Verifies whether the topic is defined and accessible.

Methods inherited from class com.swiftmq.swiftlet.Swiftlet

getName, getStartupTime, getState, isSnapshotAvailable, resume, setStartupTime, shutdown, standby, startup

Methods inherited from class java.lang.Object

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

Constructor Details

TopicManager

public TopicManager()

Method Details

getTopicQueuePrefix

protected abstract String getTopicQueuePrefix()

Returns the prefix for topic queues, e.g. 'tpc$'.

Returns:

prefix.

getTopicDelimiter

protected abstract String getTopicDelimiter()

Returns the delimiter for hierarchical topics, e.g. '.' Additional verbose description.

Returns:

delimiter.

createTopic

public abstract void createTopic(String topicName)
                          throws TopicException

Creates a topic.

Parameters:

topicName - topic name.

Throws:

TopicException - on error.

deleteTopic

public abstract void deleteTopic(String topicName)
                          throws TopicException

Deletes a topic.

Parameters:

topicName - topic name.

Throws:

TopicException - on error.

isTopicDefined

public abstract boolean isTopicDefined(String topicName)

Returns whether a topic with that name is defined or not.

Parameters:

topicName - topic name.

Returns:

true/false.

verifyTopic

public abstract TopicImpl verifyTopic(TopicImpl topic)
                               throws javax.jms.JMSException,
javax.jms.InvalidDestinationException

Verifies whether the topic is defined and accessible.

Parameters:

topic - topic.

Returns:

true/false.

Throws:

javax.jms.JMSException - on error.

javax.jms.InvalidDestinationException - if the topic is invalid.

getQueueForTopic

public String getQueueForTopic(String topicName)

Returns the name of the topic queue for publish.

Parameters:

topicName - topic name.

Returns:

queue name.

tokenizeTopicName

public String[] tokenizeTopicName(String topicName,
 String delimiter)

Tokenizes a hierachical topic name by the delimiter. For example, 'iit.sales.eu' with delimiter '.' will return String[]{'iit','sales','eu'}.

Parameters:

topicName - topic name.

delimiter - delimiter.

Returns:

tokenized array.

tokenizeTopicName

public String[] tokenizeTopicName(String topicName)

Tokenizes a hierachical topic name by the default delimiter. For example, 'iit.sales.eu' will return String[]{'iit','sales','eu'}.

Parameters:

topicName - topic name.

Returns:

tokenized array.

subscribe

public int subscribe(String topicName,
 Selector selector,
 boolean noLocal,
 String queueName)
              throws AuthenticationException

Subscribes to a topic.

Parameters:

topicName - topic name.

selector - selector or null.

noLocal - no-local flag.

queueName - subscriber queue name.

Returns:

subscription id.

Throws:

AuthenticationException - on authentication error.

subscribe

public int subscribe(String topicName,
 Selector selector,
 boolean noLocal,
 String queueName,
 boolean forceCopy)
              throws AuthenticationException

Subscribes to a topic.

Parameters:

topicName - topic name.

selector - selector or null.

noLocal - no-local flag.

queueName - subscriber queue name.

forceCopy - forces a message copy for this subscription.

Returns:

subscription id.

Throws:

AuthenticationException - on authentication error.

subscribe

public int subscribe(String topicName,
 Selector selector,
 boolean noLocal,
 String queueName,
 ActiveLogin activeLogin)
              throws AuthenticationException

Subscribes to a topic.

Parameters:

topicName - topic name.

selector - selector or null.

noLocal - no-local flag.

activeLogin - active login object.

Returns:

subscription id.

Throws:

AuthenticationException - on authentication error.

subscribe

public abstract int subscribe(TopicImpl topic,
 Selector selector,
 boolean noLocal,
 String queueName,
 ActiveLogin activeLogin)
                       throws AuthenticationException

Subscribes to a topic.

Parameters:

topic - topic.

selector - selector or null.

noLocal - no-local flag.

activeLogin - active login object.

Returns:

subscription id.

Throws:

AuthenticationException - on authentication error.

subscribe

public abstract int subscribe(TopicImpl topic,
 Selector selector,
 boolean noLocal,
 String queueName,
 ActiveLogin activeLogin,
 boolean forceCopy)
                       throws AuthenticationException

Subscribes to a topic.

Parameters:

topic - topic.

selector - selector or null.

noLocal - no-local flag.

activeLogin - active login object.

forceCopy - forces a message copy for this subscription.

Returns:

subscription id.

Throws:

AuthenticationException - on authentication error.

subscribeDurable

public abstract String subscribeDurable(String durableName,
 TopicImpl topic,
 Selector selector,
 boolean noLocal,
 ActiveLogin activeLogin)
                                 throws AuthenticationException,
QueueException,
QueueAlreadyDefinedException,
UnknownQueueException,
TopicException

Subscribe as durable subscriber.

Parameters:

durableName - durable name.

topic - topic.

selector - selector or null.

noLocal - no-local flag.

activeLogin - active login object.

Returns:

durable subscriber queue name.

Throws:

AuthenticationException - on authentication error.

QueueException - queue manager exception.

QueueAlreadyDefinedException - queue manager exception.

UnknownQueueException - queue manager exception.

TopicException - on topic manager exception.

deleteDurable

public abstract void deleteDurable(String durableName,
 ActiveLogin activeLogin)
                            throws javax.jms.InvalidDestinationException,
QueueException,
UnknownQueueException,
TopicException

Delete a durable subscriber. Deletes not only the subscription but also the durable subscriber queue.

Parameters:

durableName - durable name.

activeLogin - active login object.

Throws:

javax.jms.InvalidDestinationException - queue manager exception.

QueueException - queue manager exception.

UnknownQueueException - queue manager exception.

TopicException - on topic manager exception.

getDurableTopicName

public abstract String getDurableTopicName(String durableName,
 ActiveLogin activeLogin)

Returns the topic name for which the durable subscriber is subcribed

Parameters:

durableName - durable name.

activeLogin - active login object.

Returns:

topic name or null if the durable is not found

unsubscribe

public abstract void unsubscribe(int subscriberId)

Unsubscribe a non-durable subscription.

Parameters:

subscriberId - subscriber id.

getTopicNames

public abstract String[] getTopicNames()

Returns all defined topic names.

Returns:

array of topic names.