ch.tatool.core.executable
Class BlockingExecutable

java.lang.Object
  ch.tatool.core.element.AbstractPropertyHolder
      ch.tatool.core.element.NodeImpl
          ch.tatool.core.executable.BlockingExecutable

All Implemented Interfaces:

PropertyHolder, Executable, Node, KeyEventDispatcher

Direct Known Subclasses:

BlockingAWTExecutable

public abstract class BlockingExecutable
extends NodeImpl
implements Executable, KeyEventDispatcher

Blocking executable element implementation This implementation blocks the executable thread until finishExecution is called. Prior to calling finishExecution, a lock needs to be acquired. This way each thread finishing can first check whether it is "the first" or simply abort its operation in case it is not.

Author:

Michael Ruflin

Constructor Summary

BlockingExecutable()

BlockingExecutable(String defaultId)

Method Summary

void	cancel() Cancels the task.
protected void	cancelExecution() Called when cancel successfully acquires the finish execution lock.
boolean	dispatchKeyEvent(KeyEvent e)
void	execute() Implementation of execute.
protected void	finishExecution() Call this method to finish execution.
ExecutionContext	getExecutionContext()
protected boolean	getFinishExecutionLock() Request the lock to finish execution.
void	setExecutionContext(ExecutionContext executionContext)
protected abstract void	startExecution() Start actual execution.

Methods inherited from class ch.tatool.core.element.NodeImpl

assignParent, assignParent, assignParents, getId, getLocalId, getParent, setId, setLocalId, setParent

Methods inherited from class ch.tatool.core.element.AbstractPropertyHolder

clearProperties, getKeys, getProperty, removeProperty, setProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ch.tatool.element.Node

getParent, setParent

Methods inherited from interface ch.tatool.data.PropertyHolder

clearProperties, getId, getKeys, getProperty, removeProperty, setProperty

Constructor Detail

BlockingExecutable

public BlockingExecutable()

BlockingExecutable

public BlockingExecutable(String defaultId)

Method Detail

getExecutionContext

public ExecutionContext getExecutionContext()

setExecutionContext

public void setExecutionContext(ExecutionContext executionContext)

Specified by:

setExecutionContext in interface Executable

execute

public final void execute()

Implementation of execute. Will call startExecution on the awt thread and then block the caller thread until finishExecution is called

Specified by:

execute in interface Executable

startExecution

protected abstract void startExecution()

Start actual execution.

getFinishExecutionLock

protected boolean getFinishExecutionLock()

Request the lock to finish execution. This method needs to be called prior to calling finishExecution. Calling finishExecution is only allowed for the thread that receives true as a result.

finishExecution

protected void finishExecution()

Call this method to finish execution. Note that you need to request a lock from getFInishExecutionLock before calling this method. This method will release the Executors thread, so finish any work *before* calling this method.

cancel

public void cancel()

Cancels the task. This method fetches the finish execution lock and if successful calls cancelExecution. Once cancelExecution returns finishExecution is called

Specified by:

cancel in interface Executable

cancelExecution

protected void cancelExecution()

Called when cancel successfully acquires the finish execution lock.

dispatchKeyEvent

public boolean dispatchKeyEvent(KeyEvent e)

Specified by:

dispatchKeyEvent in interface KeyEventDispatcher