net.sf.asyncobjects.util
Class Condition

java.lang.Object
  net.sf.asyncobjects.util.Condition

public class Condition
extends Object

This class implements some logical conditions.

Author:

const

Constructor Summary

Condition()

Method Summary

static Promise<Boolean>	and(Promise<Boolean>... args) This operations finishes with true only if all promises resolve to true.
static Promise<Boolean>	falsePromise()
static Promise<Boolean>	not(Promise<Boolean> v) Logical not operation.
static Promise<Boolean>	or(Promise<Boolean>... args) This operations finishes with false only if all promises resolve to false.
static Promise<Boolean>	truePromise()
static Promise<Boolean>	valueOf(boolean value) Return promise that represents a boolean value
static <T> Promise<Boolean>	was(T expected, Promise<?> actual) Check if value matches expected using Object.equals(Object).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Condition

public Condition()

Method Detail

truePromise

public static Promise<Boolean> truePromise()

Returns:

a true promise.

falsePromise

public static Promise<Boolean> falsePromise()

Returns:

a false promise.

valueOf

public static Promise<Boolean> valueOf(boolean value)

Return promise that represents a boolean value

Parameters:

value - a value to wrap

Returns:

a promise

was

public static <T> Promise<Boolean> was(T expected,
                                       Promise<?> actual)

Check if value matches expected using Object.equals(Object).

Type Parameters:

T - a type of value to check

Parameters:

expected - an expected object

actual - a promise for actual value

Returns:

true if these too are equal.

not

public static Promise<Boolean> not(Promise<Boolean> v)

Logical not operation.

Parameters:

v - an promise for boolean value

Returns:

a promise for negated boolean value

and

public static Promise<Boolean> and(Promise<Boolean>... args)

This operations finishes with true only if all promises resolve to true. If one of promises resolves to false, or is smashed. The operation finishes immediatly.

Parameters:

args - argument promises

Returns:

a promise that represents result of operation.

or

public static Promise<Boolean> or(Promise<Boolean>... args)

This operations finishes with false only if all promises resolve to false. If one of promises resolves to true, or is smashed. The operation finishes immediatly.

Parameters:

args - argument promises

Returns:

a promise that represents result of operation.