com.levigo.util.concurrent.tasks
Interface TaskListener

All Known Implementing Classes:

TaskServiceMonitorSnapIn, TaskView

public interface TaskListener

By implementing this interface and attaching the listener to - for example - TaskService.addTaskListener(TaskListener), interested parties can receive notification about what is going on inside a TaskService.

Method Summary

void	scopeDeregistered(Task<?> task, TaskScope<?> scope) Receive notification about a Task that has been abandoned (cancelled) by a scope.
void	scopeRegistered(Task<?> task, TaskScope<?> scope) Receive notification about a Task that has been re-submitted identically but from a different scope.
void	taskCancelled(Task<?> task) Receive notification about a Task that whose execution has been cancelled.
void	taskCompleted(Task<?> task) Receive notification about a Task that whose execution has completed without exceptions.
void	taskFailed(Task<?> task) Receive notification about a Task that whose execution has failed.
void	taskQueued(Task<?> task, int priority) Receive notification about a Task that has been enqueued.
void	taskStarted(Task<?> task) Receive notification about a Task that whose execution has been started.

Method Detail

taskQueued

void taskQueued(Task<?> task,
                int priority)

Receive notification about a Task that has been enqueued.

Parameters:

task - the task

priority - the task's priority.

taskStarted

void taskStarted(Task<?> task)

Receive notification about a Task that whose execution has been started.

Parameters:

task - the task

taskFailed

void taskFailed(Task<?> task)

Receive notification about a Task that whose execution has failed.

Parameters:

task - the task

taskCompleted

void taskCompleted(Task<?> task)

Receive notification about a Task that whose execution has completed without exceptions.

Parameters:

task - the task

taskCancelled

void taskCancelled(Task<?> task)

Receive notification about a Task that whose execution has been cancelled.

Parameters:

task - the task

scopeRegistered

void scopeRegistered(Task<?> task,
                     TaskScope<?> scope)

Receive notification about a Task that has been re-submitted identically but from a different scope.

Parameters:

task - the task

scope - the additional scope

scopeDeregistered

void scopeDeregistered(Task<?> task,
                       TaskScope<?> scope)

Receive notification about a Task that has been abandoned (cancelled) by a scope.

Parameters:

task - the task

scope - the scope that abandoned (cancelled) the task