org.springframework.core.task

Interface TaskDecorator

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface TaskDecorator

A callback interface for a decorator to be applied to any Runnable about to be executed.

Note that such a decorator is not necessarily being applied to the user-supplied Runnable/Callable but rather to the actual execution callback (which may be a wrapper around the user-supplied task).

The primary use case is to set some execution context around the task's invocation, or to provide some monitoring/statistics for task execution.

NOTE: Exception handling in TaskDecorator implementations may be limited. Specifically in case of a Future-based operation, the exposed Runnable will be a wrapper which does not propagate any exceptions from its run method.

Since:

4.3

Author:

Juergen Hoeller

See Also:

TaskExecutor.execute(Runnable), SimpleAsyncTaskExecutor.setTaskDecorator(org.springframework.core.task.TaskDecorator), TaskExecutorAdapter.setTaskDecorator(org.springframework.core.task.TaskDecorator)

Method Summary

Modifier and Type	Method and Description
Runnable	decorate(Runnable runnable) Decorate the given Runnable, returning a potentially wrapped Runnable for actual execution, internally delegating to the original Runnable.run() implementation.

Method Detail

decorate

Runnable decorate(Runnable runnable)

Decorate the given Runnable, returning a potentially wrapped Runnable for actual execution, internally delegating to the original Runnable.run() implementation.

Parameters:

runnable - the original Runnable

Returns:

the decorated Runnable