org.apache.jackrabbit.core.journal

Class DatabaseJournal.DatabaseRevision

java.lang.Object

org.apache.jackrabbit.core.journal.DatabaseJournal.DatabaseRevision

All Implemented Interfaces:

InstanceRevision

Enclosing class:

DatabaseJournal

public class DatabaseJournal.DatabaseRevision
extends Object
implements InstanceRevision

This class manages the local revision of the cluster node. It persists the local revision in the LOCAL_REVISIONS table in the clustering database.

Constructor Summary

Constructors

Constructor and Description
DatabaseRevision()

Method Summary

Modifier and Type	Method and Description
void	close() Closes the instance revision.
long	get() Return current instance revision.
protected long	init(long revision) Checks whether there's a local revision value in the database for this cluster node.
void	set(long localRevision) Set current instance revision.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseRevision

public DatabaseRevision()

Method Detail

init

protected long init(long revision)
             throws JournalException

Checks whether there's a local revision value in the database for this cluster node. If not, it writes the given default revision to the database.

Parameters:

revision - the default value for the local revision counter

Returns:

the local revision

Throws:

JournalException - on error

get

public long get()

Description copied from interface: InstanceRevision

Return current instance revision.

Specified by:

get in interface InstanceRevision

Returns:

instance revision

set

public void set(long localRevision)
         throws JournalException

Description copied from interface: InstanceRevision

Set current instance revision.

Specified by:

set in interface InstanceRevision

Parameters:

localRevision - new instance revision

Throws:

JournalException - if some error occurs

close

public void close()

Description copied from interface: InstanceRevision

Closes the instance revision.

Specified by:

close in interface InstanceRevision