Future

class Future<Data> implements java.util.concurrent.Future<Data>

This class provides an implementation of Java’s Future interface for use with request invocations.

Author

jschaefe, swrede, jmoringe

Parameters

<Data> – the type of the result data eventually arriving in this future

See also: java.util.concurrent.Future

Methods

cancel

public boolean cancel(boolean mayInterrupt)

complete

public void complete(Data val)

Fills the future with the result data and notifies waiting clients.

Parameters

val – result data

error

public void error(Throwable exception)

Indicates an exception as a result of the waiting operation and notifies clients.

Parameters

exception – the exception

get

public Data get()

get

public Data get(long timeout)

Convenience method for get(timeout, TimeUnit.MILLISECONDS).

Parameters

timeout – wait this many milliseconds for a result

Throws

• ExecutionException – an error occurred in the provider of the result

• TimeoutException – timeout reached and no result received so far

• InterruptedException – if the current thread was interrupted while waiting

Returns

the result

See also: Future.get(long,TimeUnit)

get

public Data get(long timeout, TimeUnit unit)

isCancelled

public boolean isCancelled()

isDone

public boolean isDone()

Checks whether results are already available.

Returns

true if results have already been passed to this callback