guarana.toolkit.task.timers
Class ExpireChecker
java.lang.Object
guarana.util.observer.smart.SmartObservable
guarana.framework.task.Task
guarana.toolkit.task.timers.Timer
guarana.toolkit.task.timers.ExpireChecker
- All Implemented Interfaces:
- ISource, guarana.util.observer.smart.ISmartObserver
public class ExpireChecker
- extends Timer
Inspects inbound messages in order to detect expired messages inside the
integration solution. The header attribute EXPIRATION_TIME
must be used to set a deadline for a message.
The outbound and inbound messages are exactly the same, so MESSAGE_ID is the same too!
This task is normally used at pre-send stage of sending locations.
Graphical notation:
This is an Integration Pattern implementation
Problem:
Solution:
Details:
- Number of Inputs: 1
- Number of Outputs: 1
- Java Object of the inbound message is reused for the outbound message!
- Since:
- Guaranį SDK 1.0.0
- Author:
- Rafael Z. Frantz
- See Also:
Header
Constructor Summary |
ExpireChecker(String name)
Constructs a new expire checker task. |
ExpireChecker(String name,
int numberOfInputs,
int numberOfOutputs)
Constructs a new expire checker task. |
Method Summary |
void |
doWork(Exchange exchange)
This method implements the business logic of this task. |
void |
update(guarana.util.observer.smart.SmartObservable slot,
Object arg)
This method is automatically called by the observable slot to notify the slot has received a message. |
Methods inherited from class guarana.util.observer.smart.SmartObservable |
addSmartObserver, containsSmartObserver, containsSmartObserver, countSmartObservers, deleteSmartObserver, deleteSmartObservers, hasChanged, notifySmartObservers, notifySmartObservers |
ExpireChecker
public ExpireChecker(String name)
- Constructs a new expire checker task.
- Parameters:
name
- The name of this task.
ExpireChecker
public ExpireChecker(String name,
int numberOfInputs,
int numberOfOutputs)
- Constructs a new expire checker task.
- Parameters:
name
- The name of this task.numberOfInputs
- The number of input gateways this task must have.numberOfOutputs
- The number of output gateways this task must have.
doWork
public void doWork(Exchange exchange)
throws TaskExecutionException
- This method implements the business logic of this task.
Checks if the inbound message has already expired.
- Overrides:
doWork
in class Task
- Parameters:
exchange
- An exchange object that holds the inbound messages of this task.
- Throws:
TaskExecutionException
- to report any exception that has occurred during the execution of this method.
update
public void update(guarana.util.observer.smart.SmartObservable slot,
Object arg)
- This method is automatically called by the observable slot to notify the slot has received a message.
For all those tasks that can execute with one or more messages in its input slots, this method will add the
task to the executable task reporter, so it can be executed. In this case the task execution will consume messages
from all input slots.
Please, do not call this method by yourself.
Overrides the implementation at Task
for performance reasons.
- Specified by:
update
in interface guarana.util.observer.smart.ISmartObserver
- Overrides:
update
in class Task
- Parameters:
slot
- The Slot
associated with this task.arg
- THIS PARAMETHER IS NOT USED.
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