org.mapdb

Class Atomic.Boolean

java.lang.Object

org.mapdb.Atomic.Boolean

Enclosing class:

Atomic

public static final class Atomic.Boolean
extends Object

A boolean record that may be updated atomically.

Field Summary

Fields

Modifier and Type	Field and Description
protected Engine	engine
protected long	recid

Constructor Summary

Constructors

Constructor and Description
Atomic.Boolean(Engine engine, long recid)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	compareAndSet(boolean expect, boolean update) Atomically sets the value to the given updated value if the current value == the expected value.
boolean	get() Returns the current value.
boolean	getAndSet(boolean newValue) Atomically sets to the given value and returns the previous value.
long	getRecid()
void	set(boolean newValue) Unconditionally sets to the given value.
String	toString() Returns the String representation of the current value.

Methods inherited from class java.lang.Object

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

Field Detail

engine

protected final Engine engine

recid

protected final long recid

Constructor Detail

Atomic.Boolean

public Atomic.Boolean(Engine engine,
              long recid)

Method Detail

getRecid

public long getRecid()

Returns:

recid under which value is saved

get

public final boolean get()

Returns the current value.

Returns:

the current value

compareAndSet

public final boolean compareAndSet(boolean expect,
                    boolean update)

Atomically sets the value to the given updated value if the current value == the expected value.

Parameters:

expect - the expected value

update - the new value

Returns:

true if successful. False return indicates that the actual value was not equal to the expected value.

set

public final void set(boolean newValue)

Unconditionally sets to the given value.

Parameters:

newValue - the new value

getAndSet

public final boolean getAndSet(boolean newValue)

Atomically sets to the given value and returns the previous value.

Parameters:

newValue - the new value

Returns:

the previous value

toString

public String toString()

Returns the String representation of the current value.

Overrides:

toString in class Object

Returns:

the String representation of the current value.