Class WebAsyncTask<V>

Constructor Detail

• WebAsyncTask

  public WebAsyncTask​(Callable<V> callable)

  Create a WebAsyncTask wrapping the given Callable.

  Parameters:

  callable - the callable for concurrent handling

• WebAsyncTask

  public WebAsyncTask​(long timeout,
                      Callable<V> callable)

  Create a WebAsyncTask with a timeout value and a Callable.

  Parameters:

  timeout - a timeout value in milliseconds

  callable - the callable for concurrent handling

• WebAsyncTask

  public WebAsyncTask​(Long timeout,
                      String executorName,
                      Callable<V> callable)

  Create a WebAsyncTask with a timeout value, an executor name, and a Callable.

  Parameters:

  timeout - timeout value in milliseconds; ignored if null

  executorName - the name of an executor bean to use

  callable - the callable for concurrent handling

• WebAsyncTask

  public WebAsyncTask​(Long timeout,
                      AsyncTaskExecutor executor,
                      Callable<V> callable)

  Create a WebAsyncTask with a timeout value, an executor instance, and a Callable.

  Parameters:

  timeout - timeout value in milliseconds; ignored if null

  executor - the executor to use

  callable - the callable for concurrent handling

Method Detail

• getCallable

  public Callable<?> getCallable()

  Return the Callable to use for concurrent handling (never null).

• getTimeout

  public Long getTimeout()

  Return the timeout value in milliseconds, or null if no timeout is set.

• setBeanFactory

  public void setBeanFactory​(BeanFactory beanFactory)

  A BeanFactory to use for resolving an executor name.

  This factory reference will automatically be set when WebAsyncTask is used within a Spring MVC controller.

  Specified by:

  setBeanFactory in interface BeanFactoryAware

  Parameters:

  beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

  See Also:

  BeanInitializationException

• getExecutor

  public AsyncTaskExecutor getExecutor()

  Return the AsyncTaskExecutor to use for concurrent handling, or null if none specified.

• onTimeout

  public void onTimeout​(Callable<V> callback)

  Register code to invoke when the async request times out.

  This method is called from a container thread when an async request times out before the Callable has completed. The callback is executed in the same thread and therefore should return without blocking. It may return an alternative value to use, including an Exception or return RESULT_NONE.

• onCompletion

  public void onCompletion​(Runnable callback)

  Register code to invoke when the async request completes.

  This method is called from a container thread when an async request completed for any reason, including timeout and network error.