com.sun.sgs.impl.service.nodemap.affinity
Class BasicState

java.lang.Object
  com.sun.sgs.impl.service.nodemap.affinity.BasicState

Direct Known Subclasses:

AbstractAffinityGraphBuilder, AbstractLPA, LabelPropagationServer, LPADriver

public class BasicState
extends Object

A class to encapsulate the basic states required for AffinityGroupFinder and AffinityGraphBuilder.

Nested Class Summary

protected static class

BasicState.State Valid states.

Field Summary

protected BasicState.State

state The state.

Constructor Summary

BasicState()

Method Summary

protected void	checkForDisabledOrShutdownState() Throws an IllegalStateException if we are in the SHUTDOWN or DISABLED state.
protected void	checkForShutdownState() Throws an IllegalStateException if we are in the SHUTDOWN state.
protected boolean	setDisabledState() Disable this component.
protected boolean	setEnabledState() Enable this component.
protected boolean	setShutdownState() Shutdown this component.

Methods inherited from class java.lang.Object

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

Field Detail

state

protected volatile BasicState.State state

The state.

Constructor Detail

BasicState

public BasicState()

Method Detail

setDisabledState

protected boolean setDisabledState()

Disable this component. Multiple calls to disable are allowed. Disabled components can be enabled or shutdown.

Returns:

true if the state has changed

setEnabledState

protected boolean setEnabledState()

Enable this component. Multiple calls to enable are allowed. Enabled components can be disabled or shutdown.

Returns:

true if the state has changed

setShutdownState

protected boolean setShutdownState()

Shutdown this component. Multiple shutdown calls are allowed. Once shut down, a component cannot be enabled or disabled.

Returns:

true if the state has changed

checkForShutdownState

protected void checkForShutdownState()

Throws an IllegalStateException if we are in the SHUTDOWN state.

Throws:

IllegalStateException - if we are stut down

checkForDisabledOrShutdownState

protected void checkForDisabledOrShutdownState()

Throws an IllegalStateException if we are in the SHUTDOWN or DISABLED state.

Throws:

IllegalStateException - if we are shut down or disabled