guarana.toolkit.task.communicators
Class InOutCommunicator

java.lang.Object
  extended by guarana.util.observer.smart.SmartObservable
      extended by guarana.framework.task.Task
          extended by guarana.toolkit.task.communicators.Communicator
              extended by guarana.toolkit.task.communicators.InOutCommunicator
All Implemented Interfaces:
ISource, IStubInOut, guarana.util.observer.smart.ISmartObserver, Remote

public class InOutCommunicator
extends Communicator
implements IStubInOut

This communicator is to be used, exclusively, in two way ResponderPorts.
It provides a passive interface only.

Graphical notation:

Since:
Guaranį SDK 1.0.0
Author:
Rafael Z. Frantz

Field Summary
 
Fields inherited from class guarana.framework.task.Task
input, output
 
Constructor Summary
InOutCommunicator(String name, String host, int port)
          Constructs a new Passive Communicator to receive requests and give responses.
 
Method Summary
 void execute()
          This method executes the business logic of this task.
 IStubFuture pushRequest(Message<?> message)
          This method can be invoked to push a request message into the ResponderPort via InOut-Communicator.
 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
doWork, 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

InOutCommunicator

public InOutCommunicator(String name,
                         String host,
                         int port)
Constructs a new Passive Communicator to receive requests and give responses.

Parameters:
name - The name of the communicator.
host - The host name on which the registry is running.
port - The port on which the registry accepts requests.
Method Detail

execute

public void execute()
             throws TaskExecutionException
This method executes the business logic of this task. It is automatically invoked by workers.

Overrides:
execute in class Task
Throws:
TaskExecutionException - to report any exception that has occurred during the execution of this method.
See Also:
TaskExecutionException

pushRequest

public IStubFuture pushRequest(Message<?> message)
                        throws RemoteException
This method can be invoked to push a request message into the ResponderPort via InOut-Communicator.

Specified by:
pushRequest in interface IStubInOut
Parameters:
message - The request message.
Returns:
a remote future object that will contain the response message for the request.
Throws:
RemoteException - if any remote exception is raised during this method execution.
See Also:
communicator.proxy.IStubInOut

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.


Guaranį DSL Home