guarana.toolkit.task.transformers
Class Chopper
java.lang.Object
guarana.util.observer.smart.SmartObservable
guarana.framework.task.Task
guarana.toolkit.task.transformers.Transformer
guarana.toolkit.task.transformers.Chopper
- All Implemented Interfaces:
- ISource, guarana.util.observer.smart.ISmartObserver
public abstract class Chopper
- extends Transformer
Chops an inbound message into two or more new outbound messages and puts them in different slots.
It is not possible to aggregate the outbound messages using an aggregator task.
All header from the inbound message must be kept to the outbound message(s).
Outbound messages must have a new MESSAGE_ID and the inbound message as its parent.
Graphical notation:
This is an Integration Pattern implementation
Problem:
Solution:
Details:
- Number of Inputs: 1
- Number of Outputs: n
- Outbound message is built with a new Java Object!
- Since:
- Guaranį SDK 1.3.0
- Author:
- Rafael Z. Frantz
Constructor Summary |
Chopper(String name,
int numberOfOutputs)
Constructs a new chopper task with a given name. |
Chopper(String name,
int numberOfInputs,
int numberOfOutputs)
Constructs a new chopper task. |
Method Summary |
abstract 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 |
Chopper
public Chopper(String name,
int numberOfOutputs)
- Constructs a new chopper task with a given name.
- Parameters:
name
- The name of the splitter task.numberOfOutputs
- The number of output gateways this custom router has.
Chopper
public Chopper(String name,
int numberOfInputs,
int numberOfOutputs)
- Constructs a new chopper 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 abstract void doWork(Exchange exchange)
throws TaskExecutionException
- This method implements the business logic of this task.
Splits an inbound message into two or more outbound messages.
The policy to split, as well as its implementation must be provided by the used in this method.
- 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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