de.esprit.appsuite.task.taskmgr

Class TaskRegistry<C extends ApplicationContext>

java.lang.Object

de.esprit.common.util.DumpableObject

de.esprit.appsuite.launch.AbstractApplicationObject<C>

de.esprit.appsuite.task.taskmgr.TaskRegistry<C>

All Implemented Interfaces:

ApplicationObject<C>, TaskRegistrationEvent.Source, SimpleLogSupport, Dumpable

public class TaskRegistry<C extends ApplicationContext>
extends AbstractApplicationObject<C>
implements TaskRegistrationEvent.Source

This class maintains a Map with references to all running cancellable AsyncTasks in order to be able to access them by TaskId and cancel them at any time. It provides a means for detecting TaskRegistrationEvents in order to reflect the running tasks in GUI ListModels.

Author:

Rainer Buesch

Constructor Summary

Constructors

Constructor and Description
TaskRegistry(C ctx)

Method Summary

Methods

Modifier and Type	Method and Description
void	addTaskRegistrationListener(TaskRegistrationEvent.Listener l) Register as a listener for this event type.
boolean	cancelTask(TaskId taskId) Cancels the running task by TaskId.
void	deregisterTask(AsyncTask task) De-registers the given task from the TaskManager.
protected java.util.List<TaskId>	findAllCancellableTaskIds() Returns a List of all TaskIds that are registered for cancellation.
java.util.List<TaskId>	findAllNonCancellableTaskIds() Returns a List of all TaskIds that are registered but uncancellable.
AsyncTask	findTask(TaskId taskId)
AsyncTask	findTaskByName(java.lang.String taskName)
int	getTaskCount()
void	registerTask(AsyncTask task) Registers the given task within the TaskManager.
void	registerTaskStateChange(RunStateFlag stateFlag) This call causes a TaskRegistrationEvent of type ChangeType.UPDATE to be fired.
void	removeTaskRegistrationListener(TaskRegistrationEvent.Listener l) Deregister the listener.

Methods inherited from class de.esprit.appsuite.launch.AbstractApplicationObject

getApplicationContext, getLogChannel, isLogDebug, isLogVerbose, logDebug, logDump, logError, logError, logFatal, logInfo, logVerbose, logWarning, setLogChannel

Methods inherited from class de.esprit.common.util.DumpableObject

configureDumpHeadlineLength, configureDumpMaxElementsPrinted, copyDumpStringValues, copyToStringValues, createDumpHeader, toDumpString, toDumpString, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskRegistry

public TaskRegistry(C ctx)

Method Detail

cancelTask

public boolean cancelTask(TaskId taskId)

Cancels the running task by TaskId.

Returns:

true if the task was found and cancelled, false if the task was not found

findTask

public final AsyncTask findTask(TaskId taskId)

findTaskByName

public final AsyncTask findTaskByName(java.lang.String taskName)

getTaskCount

public int getTaskCount()

findAllCancellableTaskIds

protected java.util.List<TaskId> findAllCancellableTaskIds()

Returns a List of all TaskIds that are registered for cancellation.

findAllNonCancellableTaskIds

public java.util.List<TaskId> findAllNonCancellableTaskIds()

Returns a List of all TaskIds that are registered but uncancellable.

registerTask

public void registerTask(AsyncTask task)

Registers the given task within the TaskManager. This call causes a TaskRegistrationEvent of type ChangeType.CREATE to be fired.

deregisterTask

public void deregisterTask(AsyncTask task)

De-registers the given task from the TaskManager. This call causes a TaskRegistrationEvent of type ChangeType.DELETE to be fired.

registerTaskStateChange

public void registerTaskStateChange(RunStateFlag stateFlag)

This call causes a TaskRegistrationEvent of type ChangeType.UPDATE to be fired.

addTaskRegistrationListener

public void addTaskRegistrationListener(TaskRegistrationEvent.Listener l)

Description copied from interface: TaskRegistrationEvent.Source

Register as a listener for this event type.

Specified by:

addTaskRegistrationListener in interface TaskRegistrationEvent.Source

removeTaskRegistrationListener

public void removeTaskRegistrationListener(TaskRegistrationEvent.Listener l)

Description copied from interface: TaskRegistrationEvent.Source

Deregister the listener.

Specified by:

removeTaskRegistrationListener in interface TaskRegistrationEvent.Source