cz.cuni.amis.utils.future
Enum FutureStatus

java.lang.Object
  java.lang.Enum<FutureStatus>
      cz.cuni.amis.utils.future.FutureStatus

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<FutureStatus>

public enum FutureStatus
extends java.lang.Enum<FutureStatus>

Status of the FutureWithListeners object. It can tell you in a single enum what state the future is in.

Enum Constant Summary

CANCELED
The computation of the future has been canceled.

COMPUTATION_EXCEPTION
An exception has happenned during the future computation.

FUTURE_IS_BEING_COMPUTED
The future has not been computed yet, methods FutureWithListeners.get() and FutureWithListeners.get(long, java.util.concurrent.TimeUnit) will block.

FUTURE_IS_READY
Future is ready, methods FutureWithListeners.get() and FutureWithListeners.get(long, java.util.concurrent.TimeUnit) won't block and will immediately return a result.

Method Summary

static FutureStatus	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static FutureStatus[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

FUTURE_IS_BEING_COMPUTED

public static final FutureStatus FUTURE_IS_BEING_COMPUTED

The future has not been computed yet, methods FutureWithListeners.get() and FutureWithListeners.get(long, java.util.concurrent.TimeUnit) will block.

FUTURE_IS_READY

public static final FutureStatus FUTURE_IS_READY

Future is ready, methods FutureWithListeners.get() and FutureWithListeners.get(long, java.util.concurrent.TimeUnit) won't block and will immediately return a result.

CANCELED

public static final FutureStatus CANCELED

The computation of the future has been canceled. The future result is (and will remain) unavailable.

COMPUTATION_EXCEPTION

public static final FutureStatus COMPUTATION_EXCEPTION

An exception has happenned during the future computation. The future result is (and will remain) unavailable.

Method Detail

values

public static FutureStatus[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (FutureStatus c : FutureStatus.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static FutureStatus valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null