guarana.toolkit.task.modifiers
Class ContextBasedHeaderEnricher

java.lang.Object
  extended by guarana.util.observer.smart.SmartObservable
      extended by guarana.framework.task.Task
          extended by guarana.toolkit.task.modifiers.Modifier
              extended by guarana.toolkit.task.modifiers.ContextBasedHeaderEnricher
All Implemented Interfaces:
ISource, guarana.util.observer.smart.ISmartObserver

public abstract class ContextBasedHeaderEnricher
extends Modifier

Adds content from a context message to the inbound message's header. New attributes and values can are stored using the dynamic attributes. All header from the inbound message is kept to the outbound message apart of the new data. Outbound message has a new MESSAGE_ID and the inbound message as its parent.

Graphical notation:


This is an Integration Pattern implementation

Problem:

Solution:

Details:

Since:
Guaranį SDK 1.3.0
Author:
Rafael Z. Frantz

Field Summary
 
Fields inherited from class guarana.framework.task.Task
input, output
 
Constructor Summary
ContextBasedHeaderEnricher(String name)
          Constructs a new context header enricher task.
ContextBasedHeaderEnricher(String name, int numberOfInputs, int numberOfOutputs)
          Constructs a new context header enricher task.
 
Method Summary
abstract  void doWork(Exchange exchange)
          This method implements the business logic of this task.
 
Methods inherited from class guarana.framework.task.Task
execute, getName, getTriggerInterval, isTriggerTask, setName, setTriggerInterval, update
 
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

ContextBasedHeaderEnricher

public ContextBasedHeaderEnricher(String name)
Constructs a new context header enricher task.

Parameters:
name - The name of the header enricher task.

ContextBasedHeaderEnricher

public ContextBasedHeaderEnricher(String name,
                                  int numberOfInputs,
                                  int numberOfOutputs)
Constructs a new context header enricher 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.
Method Detail

doWork

public abstract void doWork(Exchange exchange)
                     throws TaskExecutionException
This method implements the business logic of this task.
Enriches the header of an inbound message with new attributes, called dynamic attributes.

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.


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