Package org.apache.activemq.store.kahadb

Class AbstractKahaDBMetaData<T>

java.lang.Object

org.apache.activemq.store.kahadb.AbstractKahaDBMetaData<T>

All Implemented Interfaces:

KahaDBMetaData<T>

Direct Known Subclasses:

JobSchedulerKahaDBMetaData

public abstract class AbstractKahaDBMetaData<T>
extends Object
implements KahaDBMetaData<T>

Field Summary

Fields inherited from interface org.apache.activemq.store.kahadb.KahaDBMetaData

CLOSED_STATE, OPEN_STATE

Constructor Summary

Constructors

Constructor	Description
AbstractKahaDBMetaData()

Method Summary

Modifier and Type	Method	Description
Location	getLastUpdateLocation()	Returns the Journal Location value that indicates that last recorded update that was successfully performed for this KahaDB store implementation.
Page<T>	getPage()	Gets the Page in the store PageFile where the KahaDBMetaData instance is stored.
int	getState()	Gets the state flag of this meta data instance.
void	setLastUpdateLocation(Location location)	Updates the value of the last successful update.
void	setPage(Page<T> page)	Sets the Page instance used to load and store the KahaDBMetaData instance.
void	setState(int value)	Sets the current value of the state flag.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.store.kahadb.KahaDBMetaData

initialize, load, read, write

Constructor Detail

AbstractKahaDBMetaData

public AbstractKahaDBMetaData()

Method Detail

getPage

public Page<T> getPage()

Description copied from interface: KahaDBMetaData

Gets the Page in the store PageFile where the KahaDBMetaData instance is stored.

Specified by:

getPage in interface KahaDBMetaData<T>

Returns:

the Page to use to start access the KahaDBMetaData instance.

getState

public int getState()

Description copied from interface: KahaDBMetaData

Gets the state flag of this meta data instance.

Specified by:

getState in interface KahaDBMetaData<T>

Returns:

the current state value for this instance.

getLastUpdateLocation

public Location getLastUpdateLocation()

Description copied from interface: KahaDBMetaData

Returns the Journal Location value that indicates that last recorded update that was successfully performed for this KahaDB store implementation.

Specified by:

getLastUpdateLocation in interface KahaDBMetaData<T>

Returns:

the location of the last successful update location.

setPage

public void setPage(Page<T> page)

Description copied from interface: KahaDBMetaData

Sets the Page instance used to load and store the KahaDBMetaData instance.

Specified by:

setPage in interface KahaDBMetaData<T>

Parameters:

page - the new Page value to use.

setState

public void setState(int value)

Description copied from interface: KahaDBMetaData

Sets the current value of the state flag.

Specified by:

setState in interface KahaDBMetaData<T>

Parameters:

value - the new value to assign to the state flag.

setLastUpdateLocation

public void setLastUpdateLocation(Location location)

Description copied from interface: KahaDBMetaData

Updates the value of the last successful update.

Specified by:

setLastUpdateLocation in interface KahaDBMetaData<T>

Parameters:

location - the new value to assign the last update location field.