org.jboss.cache.loader
Class FileExtendedCacheLoader

java.lang.Object
  |
  +--org.jboss.cache.loader.FileCacheLoader
        |
        +--org.jboss.cache.loader.FileExtendedCacheLoader

All Implemented Interfaces:

CacheLoader, ExtendedCacheLoader, org.jboss.system.Service

public class FileExtendedCacheLoader

extends FileCacheLoader

implements ExtendedCacheLoader

A FileExtendedCacheLoader.

Version:

$Revision$

Author:

Brian Stansberry

Field Summary

Fields inherited from class org.jboss.cache.loader.FileCacheLoader

DATA, DIR_SUFFIX

Constructor Summary

FileExtendedCacheLoader()
Create a new FileExtendedCacheLoader.

Method Summary

byte[]	loadEntireState() Overrides the superclass method by taking advantage of any special classloader registered for the root node.
byte[]	loadState(Fqn subtree) Fetch a portion of the state for this cache from secondary storage (disk, DB) and return it as a byte buffer.
void	setRegionManager(RegionManager manager) Sets the RegionManager this object should use to manage marshalling/unmarshalling of different regions using different classloaders.
void	storeEntireState(byte[] state) Overrides the superclass method by taking advantage of any special classloader registered for the root node.
void	storeState(byte[] state, Fqn subtree) Store the given portion of the cache tree's state in secondary storage.

Methods inherited from class org.jboss.cache.loader.FileCacheLoader

commit, create, destroy, exists, get, get, getChildrenNames, loadAttributes, loadStateFromFilessystem, prepare, put, put, put, put, remove, remove, removeData, rollback, setCache, setConfig, start, stop, storeAttributes

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jboss.cache.loader.CacheLoader

commit, exists, get, get, getChildrenNames, prepare, put, put, put, remove, remove, removeData, rollback, setCache, setConfig

Methods inherited from interface org.jboss.system.Service

create, destroy, start, stop

Constructor Detail

FileExtendedCacheLoader

public FileExtendedCacheLoader()

Create a new FileExtendedCacheLoader.

Method Detail

loadState

public byte[] loadState(Fqn subtree)
                 throws java.lang.Exception

Description copied from interface: ExtendedCacheLoader

Fetch a portion of the state for this cache from secondary storage (disk, DB) and return it as a byte buffer. This is for activation of a portion of new cache from a remote cache. The new cache would then call ExtendedCacheLoader.storeState(byte[], Fqn).

Specified by:

loadState in interface ExtendedCacheLoader

Parameters:

subtree - Fqn naming the root (i.e. highest level parent) node of the subtree for which state is requested.

java.lang.Exception

See Also:

TreeCache.activateRegion(String)

storeState

public void storeState(byte[] state,
                       Fqn subtree)
                throws java.lang.Exception

Description copied from interface: ExtendedCacheLoader

Store the given portion of the cache tree's state in secondary storage. Overwrite whatever is currently in secondary storage.

Specified by:

storeState in interface ExtendedCacheLoader

Parameters:

state - the state to store

subtree - Fqn naming the root (i.e. highest level parent) node of the subtree included in state.

java.lang.Exception

setRegionManager

public void setRegionManager(RegionManager manager)

Description copied from interface: ExtendedCacheLoader

Sets the RegionManager this object should use to manage marshalling/unmarshalling of different regions using different classloaders.

NOTE: This method is only intended to be used by the TreeCache instance this cache loader is associated with.

Specified by:

setRegionManager in interface ExtendedCacheLoader

Parameters:

manager - the region manager to use, or null.

loadEntireState

public byte[] loadEntireState()
                       throws java.lang.Exception

Overrides the superclass method by taking advantage of any special classloader registered for the root node.

Specified by:

loadEntireState in interface CacheLoader

Overrides:

loadEntireState in class FileCacheLoader

Returns:

Throws:

java.lang.Exception

storeEntireState

public void storeEntireState(byte[] state)
                      throws java.lang.Exception

Overrides the superclass method by taking advantage of any special classloader registered for the root node.

Specified by:

storeEntireState in interface CacheLoader

Overrides:

storeEntireState in class FileCacheLoader

Parameters:

state -

Throws:

java.lang.Exception