net.sf.hajdbc.local

Class LocalStateManager

java.lang.Object

net.sf.hajdbc.local.LocalStateManager

All Implemented Interfaces:

java.util.EventListener, DatabaseActivationListener, DatabaseDeactivationListener, Lifecycle, StateManager

public class LocalStateManager
extends java.lang.Object
implements StateManager

Author:

Paul Ferraro

Constructor Summary

Constructors

Constructor and Description
LocalStateManager(DatabaseCluster<?> databaseCluster)

Method Summary

Modifier and Type	Method and Description
void	activated(DatabaseEvent event) Triggered after database is successfully activated.
void	deactivated(DatabaseEvent event) Triggered after database is successfully deactivated.
java.util.Set<java.lang.String>	getInitialState() Returns the initial state of the cluster.
boolean	isMembershipEmpty() Detects whether or not the membership of this state manager is empty.
void	start() Called upon database cluster start.
void	stop() Called when database cluster is stopped.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalStateManager

public LocalStateManager(DatabaseCluster<?> databaseCluster)

Parameters:

databaseCluster -

Method Detail

getInitialState

public java.util.Set<java.lang.String> getInitialState()

Description copied from interface: StateManager

Returns the initial state of the cluster.

Specified by:

getInitialState in interface StateManager

Returns:

a set of database identifiers, or null, if no initial cluster state was found.

See Also:

StateManager.getInitialState()

start

public void start()
           throws java.lang.Exception

Description copied from interface: Lifecycle

Called upon database cluster start.

Specified by:

start in interface Lifecycle

Throws:

java.lang.Exception - if this service fails to start.

See Also:

Lifecycle.start()

stop

public void stop()

Description copied from interface: Lifecycle

Called when database cluster is stopped.

Specified by:

stop in interface Lifecycle

See Also:

Lifecycle.stop()

isMembershipEmpty

public boolean isMembershipEmpty()

Description copied from interface: StateManager

Detects whether or not the membership of this state manager is empty. Used during cluster panic detection.

Specified by:

isMembershipEmpty in interface StateManager

Returns:

true, if membership is empty, false otherwise

See Also:

StateManager.isMembershipEmpty()

activated

public void activated(DatabaseEvent event)

Description copied from interface: DatabaseActivationListener

Triggered after database is successfully activated.

Specified by:

activated in interface DatabaseActivationListener

Parameters:

event - indicates the database that was activated

See Also:

DatabaseActivationListener.activated(net.sf.hajdbc.DatabaseEvent)

deactivated

public void deactivated(DatabaseEvent event)

Description copied from interface: DatabaseDeactivationListener

Triggered after database is successfully deactivated.

Specified by:

deactivated in interface DatabaseDeactivationListener

Parameters:

event - indicates the database that was deactivated

See Also:

DatabaseDeactivationListener.deactivated(net.sf.hajdbc.DatabaseEvent)