regions.validate

Class ValidateBlackboard

java.lang.Object

hydra.blackboard.Blackboard

regions.validate.ValidateBlackboard

public class ValidateBlackboard
extends Blackboard

An RMI-based Hydra Blackboard whose shared map mirrors the region being tested. The keys of the blackboard are the same as in the region and the values are instances of Value.

Since:

3.5

Field Summary

Fields inherited from class hydra.blackboard.Blackboard

counterNames, GemFire, RMI

Method Summary

Modifier and Type	Method and Description
Value	get(Object key) Returns the value of the given key in the blackboard
static ValidateBlackboard	getInstance() Returns the singleton instance of ValidateBlackboard, creating if it necessary.
Object	getRandomKey() Returns a randomly chosen key from the blackboard
boolean	replace(Object key, Value expectedValue, Value newValue) Atomically replaces the value associated with the given key if and only if the current value is equal to currentValue.

Methods inherited from class hydra.blackboard.Blackboard

createSharedCounters, createSharedLock, createSharedMap, getCounterNames, getSharedCounter, getSharedCounters, getSharedLock, getSharedMap, print, printSharedCounters, printSharedMap

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ValidateBlackboard getInstance()

Returns the singleton instance of ValidateBlackboard, creating if it necessary.

get

public Value get(Object key)

Returns the value of the given key in the blackboard

replace

public boolean replace(Object key,
                       Value expectedValue,
                       Value newValue)

Atomically replaces the value associated with the given key if and only if the current value is equal to currentValue.

Returns:

Whether or not the value was actually replaced

See Also:

SharedMap.replace(java.lang.Object, java.lang.Object, java.lang.Object)

getRandomKey

public Object getRandomKey()

Returns a randomly chosen key from the blackboard

See Also:

SharedMap.getRandomKey()