guarana.toolkit.task.streamdealers.compressors
Class Zipper

java.lang.Object
  extended by guarana.util.observer.smart.SmartObservable
      extended by guarana.framework.task.Task
          extended by guarana.toolkit.task.streamdealers.StreamDealer
              extended by guarana.toolkit.task.streamdealers.compressors.Compressor
                  extended by guarana.toolkit.task.streamdealers.compressors.Zipper
All Implemented Interfaces:
ISource, guarana.util.observer.smart.ISmartObserver

public class Zipper
extends Compressor

Compacts an inbound message body according to an specific compressor. See guarana.toolkit.task.streamdealers.compressors package for supported compressors. Please note that to create your own zipper you just have to implement the ICompressor interface. This task does not add or remove content from the inbound messages, it keeps all the original content. For this reason the outbound message has the same MESSAGE_ID the inbound message has.

Graphical notation:


This is an Integration Pattern implementation

Problem:

Solution:

Details:

Since:
Guaranį SDK 1.0.0
Author:
Rafael Z. Frantz

Field Summary
 
Fields inherited from class guarana.framework.task.Task
input, output
 
Constructor Summary
Zipper(String name, ICompressor compressor)
          Constructs a new zipper task.
Zipper(String name, int numberOfInputs, int numberOfOutputs, ICompressor compressor)
          Constructs a new zipper 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.framework.task.Task
execute, getName, getTriggerInterval, isTriggerTask, setName, setTriggerInterval
 
Methods inherited from class guarana.util.observer.smart.SmartObservable
addSmartObserver, containsSmartObserver, containsSmartObserver, countSmartObservers, deleteSmartObserver, deleteSmartObservers, hasChanged, notifySmartObservers, notifySmartObservers
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Zipper

public Zipper(String name,
              ICompressor compressor)
Constructs a new zipper task.

Parameters:
name - The name of this task.
compressor - The compressor this task must use.

Zipper

public Zipper(String name,
              int numberOfInputs,
              int numberOfOutputs,
              ICompressor compressor)
Constructs a new zipper 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.
compressor - The compressor this task must use.
Method Detail

doWork

public void doWork(Exchange exchange)
            throws TaskExecutionException
This method implements the business logic of this task.
Compress the body of the inbound message.

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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