guarana.toolkit.task.mappers
Class XML2Stream

java.lang.Object
  extended by guarana.util.observer.smart.SmartObservable
      extended by guarana.framework.task.Task
          extended by guarana.toolkit.task.mappers.Mapper
              extended by guarana.toolkit.task.mappers.XML2Stream
All Implemented Interfaces:
ISource, guarana.util.observer.smart.ISmartObserver

public abstract class XML2Stream
extends Mapper

Maps an inbound message body from XML format to stream format. 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: How do you map messages with structured data into messages with unstructured?

Solution: Use an xml two stream mapper to map the body in xml format to stream format. 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
XML2Stream(String name)
          Constructs a new XML mapper task.
XML2Stream(String name, int numberOfInputs, int numberOfOutputs)
          Constructs a new XML mapper 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.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

XML2Stream

public XML2Stream(String name)
Constructs a new XML mapper task.

Parameters:
name - The name of the XML mapper task.

XML2Stream

public XML2Stream(String name,
                  int numberOfInputs,
                  int numberOfOutputs)
Constructs a new XML mapper 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.
Maps an inbound message body in XML format into an stream format.

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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