org.ikasan.framework.initiator.messagedriven
Class JmsMessageDrivenInitiatorImpl

java.lang.Object
  org.ikasan.framework.initiator.AbstractInitiator
      org.ikasan.framework.initiator.messagedriven.JmsMessageDrivenInitiatorImpl

All Implemented Interfaces:

javax.jms.MessageListener, Initiator, JmsMessageDrivenInitiator, ListenerSetupFailureListener, MonitorSubject

Direct Known Subclasses:

EventMessageDrivenInitiator, RawMessageDrivenInitiator

public abstract class JmsMessageDrivenInitiatorImpl
extends AbstractInitiator
implements JmsMessageDrivenInitiator, MonitorSubject, ListenerSetupFailureListener

Abstract base class for JMS Message Driven Initiators Subclasses will provide an implementation for handling of one or more of the specific JMS Message types into an Event

Author:

Ikasan Development Team

Field Summary

protected org.ikasan.framework.initiator.messagedriven.JmsMessageDrivenInitiatorImpl.Anesthetist	anesthetist The Anesthetist for stopping/starting the message listener container
static String	JMS_MESSAGE_DRIVEN_INITIATOR_TYPE
protected MessageListenerContainer	messageListenerContainer The message listener container

Fields inherited from class org.ikasan.framework.initiator.AbstractInitiator

error, errorLoggingService, EXCEPTION_ACTION_IMPLIED_ROLLBACK, exceptionHandler, excludedEventService, exclusions, flow, moduleName, monitorListeners, name, retryCount, stopping, UNSUPPORTED_EXCLUDE_ENCONTERED

Constructor Summary

JmsMessageDrivenInitiatorImpl(String moduleName, String name, Flow flow, IkasanExceptionHandler exceptionHandler)
Constructor

Method Summary

protected boolean	anesthetistOperating() Return true if the anesthetist is operating
protected void	cancelRetryCycle() Cancels retry activity
protected void	completeRetryCycle() Cancel the retry activity, and resume any business as usual activity
protected void	continueRetryCycle(long delay) Template method for subclasses to selectively override
MessageListenerContainer	getMessageListenerContainer() Accessor for messageListenerContainer
String	getType() Returns the type of the initiator
protected Event	handleBytesMessage(javax.jms.BytesMessage message) JMS Message specific type handling for BytesMessage Subclasses that wish to support this Message type will override this
protected Event	handleMapMessage(javax.jms.MapMessage message) JMS Message specific type handling for MapMessage Subclasses that wish to support this Message type will override this
protected Event	handleObjectMessage(javax.jms.ObjectMessage message) JMS Message specific type handling for ObjectMessage Subclasses that wish to support this Message type will override this
protected Event	handleStreamMessage(javax.jms.StreamMessage message) JMS Message specific type handling for StreamMessage Subclasses that wish to support this Message type will override this
protected Event	handleTextMessage(javax.jms.TextMessage message) JMS Message specific type handling for TextMessage Subclasses that wish to support this Message type will override this
boolean	isRecovering() Is this initiator in a recovering state.
boolean	isRunning() Is this initiator running.
void	notifyListenerSetupFailure(Throwable throwable) Notify error during listener setup
void	onMessage(javax.jms.Message message)
void	setListenerSetupFailureRetryDelay(int listenerSetupFailureRetryDelay) Setter for overriding the default value (10000)of listenerSetupFailureRetryDelay
void	setMaxListenerSetupFailureRetries(int maxListenerSetupFailureRetries) Setter for overriding the default value (Indefinite) of listenerSetupFailureRetryDelay
void	setMessageListenerContainer(MessageListenerContainer messageListenerContainer)
protected void	startInitiator() Only the extending class knows how to start the initiator.
protected void	startRetryCycle(Integer maxAttempts, long delay) Initiator needs to start a retry cycle due to an exception action.
protected void	stopInitiator() Only the extending class knows how to stop the initiator.

Methods inherited from class org.ikasan.framework.initiator.AbstractInitiator

addListener, getExceptionHandler, getExclusions, getFlow, getHandledEventCount, getLastEventTime, getLogger, getModuleName, getMonitorListeners, getName, getRetryCount, getState, handleAction, handleRetry, invokeFlow, invokeFlow, isError, isStopping, logError, notifyMonitorListeners, removeListener, resume, setErrorLoggingService, setExcludedEventService, start, stop, stopInError, supportsExclusions

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ikasan.framework.initiator.Initiator

getExceptionHandler, getFlow, getHandledEventCount, getLastEventTime, getName, getRetryCount, getState, isError, start, stop

Methods inherited from interface org.ikasan.framework.monitor.MonitorSubject

addListener, removeListener

Field Detail

JMS_MESSAGE_DRIVEN_INITIATOR_TYPE

public static final String JMS_MESSAGE_DRIVEN_INITIATOR_TYPE

See Also:

Constant Field Values

messageListenerContainer

protected MessageListenerContainer messageListenerContainer

The message listener container

anesthetist

protected org.ikasan.framework.initiator.messagedriven.JmsMessageDrivenInitiatorImpl.Anesthetist anesthetist

The Anesthetist for stopping/starting the message listener container

Constructor Detail

JmsMessageDrivenInitiatorImpl

public JmsMessageDrivenInitiatorImpl(String moduleName,
                                     String name,
                                     Flow flow,
                                     IkasanExceptionHandler exceptionHandler)

Constructor

Parameters:

moduleName - The name of the module

name - The name of this initiator

flow - The name of the flow it starts

exceptionHandler - handler for Exceptions

Method Detail

getType

public String getType()

Description copied from interface: Initiator

Returns the type of the initiator

Specified by:

getType in interface Initiator

Returns:

type

onMessage

public void onMessage(javax.jms.Message message)

Specified by:

onMessage in interface javax.jms.MessageListener

completeRetryCycle

protected void completeRetryCycle()

Description copied from class: AbstractInitiator

Cancel the retry activity, and resume any business as usual activity

Specified by:

completeRetryCycle in class AbstractInitiator

startRetryCycle

protected void startRetryCycle(Integer maxAttempts,
                               long delay)

Description copied from class: AbstractInitiator

Initiator needs to start a retry cycle due to an exception action. Only the extending class has the knowledge to start a retry cycle.

Specified by:

startRetryCycle in class AbstractInitiator

delay - The delay in milliseconds before we perform a retry

continueRetryCycle

protected void continueRetryCycle(long delay)

Description copied from class: AbstractInitiator

Template method for subclasses to selectively override

Overrides:

continueRetryCycle in class AbstractInitiator

cancelRetryCycle

protected void cancelRetryCycle()

Description copied from class: AbstractInitiator

Cancels retry activity

Specified by:

cancelRetryCycle in class AbstractInitiator

isRecovering

public boolean isRecovering()

Description copied from interface: Initiator

Is this initiator in a recovering state. This recovering state also denotes this initiator as running.

Specified by:

isRecovering in interface Initiator

Returns:

boolean

isRunning

public boolean isRunning()

Description copied from interface: Initiator

Is this initiator running.

Specified by:

isRunning in interface Initiator

Returns:

boolean

anesthetistOperating

protected boolean anesthetistOperating()

Return true if the anesthetist is operating

Returns:

true if the anesthetist is operating

startInitiator

protected void startInitiator()

Description copied from class: AbstractInitiator

Only the extending class knows how to start the initiator.

Specified by:

startInitiator in class AbstractInitiator

stopInitiator

protected void stopInitiator()

Description copied from class: AbstractInitiator

Only the extending class knows how to stop the initiator.

Specified by:

stopInitiator in class AbstractInitiator

setMessageListenerContainer

public void setMessageListenerContainer(MessageListenerContainer messageListenerContainer)

Parameters:

messageListenerContainer - the messageListenerContainer to set

getMessageListenerContainer

public MessageListenerContainer getMessageListenerContainer()

Accessor for messageListenerContainer

Specified by:

getMessageListenerContainer in interface JmsMessageDrivenInitiator

Returns:

notifyListenerSetupFailure

public void notifyListenerSetupFailure(Throwable throwable)

Description copied from interface: ListenerSetupFailureListener

Notify error during listener setup

Specified by:

notifyListenerSetupFailure in interface ListenerSetupFailureListener

handleBytesMessage

protected Event handleBytesMessage(javax.jms.BytesMessage message)
                            throws javax.jms.JMSException

JMS Message specific type handling for BytesMessage Subclasses that wish to support this Message type will override this

Parameters:

message - The message to handle

Returns:

Event The event containing the message

Throws:

javax.jms.JMSException - Exception if there is a problem with JMS

handleStreamMessage

protected Event handleStreamMessage(javax.jms.StreamMessage message)
                             throws javax.jms.JMSException,
                                    EventDeserialisationException

JMS Message specific type handling for StreamMessage Subclasses that wish to support this Message type will override this

Parameters:

message - The message to handle

Returns:

Event

Throws:

javax.jms.JMSException

EventDeserialisationException

handleObjectMessage

protected Event handleObjectMessage(javax.jms.ObjectMessage message)
                             throws javax.jms.JMSException,
                                    EventDeserialisationException

JMS Message specific type handling for ObjectMessage Subclasses that wish to support this Message type will override this

Parameters:

message - The message to handle

Returns:

Event

Throws:

javax.jms.JMSException - Exception if there is a problem with JMS

EventDeserialisationException

handleMapMessage

protected Event handleMapMessage(javax.jms.MapMessage message)
                          throws javax.jms.JMSException,
                                 EventDeserialisationException

JMS Message specific type handling for MapMessage Subclasses that wish to support this Message type will override this

Parameters:

message - The message to handle

Returns:

Event

Throws:

javax.jms.JMSException - Exception if there is a problem with JMS

EventDeserialisationException

handleTextMessage

protected Event handleTextMessage(javax.jms.TextMessage message)
                           throws javax.jms.JMSException,
                                  EventDeserialisationException

JMS Message specific type handling for TextMessage Subclasses that wish to support this Message type will override this

Parameters:

message - The message to handle

Returns:

Event

Throws:

javax.jms.JMSException - Exception if there is a problem with JMS

EventDeserialisationException

setListenerSetupFailureRetryDelay

public void setListenerSetupFailureRetryDelay(int listenerSetupFailureRetryDelay)

Setter for overriding the default value (10000)of listenerSetupFailureRetryDelay

Parameters:

listenerSetupFailureRetryDelay - in milliseconds

setMaxListenerSetupFailureRetries

public void setMaxListenerSetupFailureRetries(int maxListenerSetupFailureRetries)

Setter for overriding the default value (Indefinite) of listenerSetupFailureRetryDelay

Parameters:

maxListenerSetupFailureRetries -