guarana.toolkit.task.streamdealers.codecs
Class Decoder
java.lang.Object
guarana.util.observer.smart.SmartObservable
guarana.framework.task.Task
guarana.toolkit.task.streamdealers.StreamDealer
guarana.toolkit.task.streamdealers.codecs.Codec
guarana.toolkit.task.streamdealers.codecs.Decoder
- All Implemented Interfaces:
- ISource, guarana.util.observer.smart.ISmartObserver
public class Decoder
- extends Codec
Decodes an inbound message body from one format to another according to the codec used.
See guarana.toolkit.task.streamdealers.codecs package for supported codecs.
Please note that to create your own decoder you just have to implement the ICodec 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:
- 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
Constructor Summary |
Decoder(String name,
ICodec codec)
Constructs a new decoder task. |
Decoder(String name,
int numberOfInputs,
int numberOfOutputs,
ICodec codec)
Constructs a new decoder 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 |
Decoder
public Decoder(String name,
ICodec codec)
- Constructs a new decoder task.
- Parameters:
name
- The name of this task.codec
- The codec this task must use.
Decoder
public Decoder(String name,
int numberOfInputs,
int numberOfOutputs,
ICodec codec)
- Constructs a new decoder 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.codec
- The codec this task must use.
doWork
public void doWork(Exchange exchange)
throws TaskExecutionException
- This method implements the business logic of this task.
Decodes 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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