org.cristalise.kernel.persistency

Class ClusterStorageManager

java.lang.Object

org.cristalise.kernel.persistency.ClusterStorageManager

public class ClusterStorageManager
extends Object

instantiates ClusterStorages listed in properties file All read/write requests to storage pass through this object, which can query the capabilities of each declared storage, and channel requests accordingly. Transaction based. * @version $Revision: 1.62 $ $Date: 2006/02/01 13:27:46 $

Author:

$Author: abranson $

Constructor Summary

Constructors

Constructor and Description
ClusterStorageManager(Authenticator auth) Initialises all ClusterStorage handlers listed by class name in the property "ClusterStorages" This property is usually process specific, and so should be in the server/client.conf and not the connect file.

Method Summary

Methods

Modifier and Type	Method and Description
void	abort(Object locker)
void	begin(Object locker)
void	clearCache()
void	clearCache(ItemPath itemPath)
void	clearCache(ItemPath itemPath, String path)
void	close()
void	commit(Object locker)
void	dumpCacheContents(int logLevel)
C2KLocalObject	get(ItemPath itemPath, String path) Internal get method.
String[]	getClusterContents(ItemPath itemPath, String path) Retrieves the ids of the next level of a cluster Does not look in any currently open transactions.
ArrayList<ClusterStorage>	instantiateStores(String allClusters)
void	put(ItemPath itemPath, C2KLocalObject obj)
void	put(ItemPath itemPath, C2KLocalObject obj, Object locker) Internal put method.
void	remove(ItemPath itemPath, String path)
void	remove(ItemPath itemPath, String path, Object locker) Deletes a cluster from all writers

Methods inherited from class java.lang.Object

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

Constructor Detail

ClusterStorageManager

public ClusterStorageManager(Authenticator auth)
                      throws PersistencyException

Initialises all ClusterStorage handlers listed by class name in the property "ClusterStorages" This property is usually process specific, and so should be in the server/client.conf and not the connect file.

Throws:

PersistencyException

Method Detail

instantiateStores

public ArrayList<ClusterStorage> instantiateStores(String allClusters)
                                            throws PersistencyException

Throws:

PersistencyException

close

public void close()

getClusterContents

public String[] getClusterContents(ItemPath itemPath,
                          String path)
                            throws PersistencyException

Retrieves the ids of the next level of a cluster Does not look in any currently open transactions.

Throws:

PersistencyException

get

public C2KLocalObject get(ItemPath itemPath,
                 String path)
                   throws PersistencyException,
                          ObjectNotFoundException

Internal get method. Retrieves clusters from ClusterStorages & maintains the memory cache

Throws:

PersistencyException

ObjectNotFoundException

put

public void put(ItemPath itemPath,
       C2KLocalObject obj)
         throws PersistencyException

Throws:

PersistencyException

put

public void put(ItemPath itemPath,
       C2KLocalObject obj,
       Object locker)
         throws PersistencyException

Internal put method. Creates or overwrites a cluster in all writers. Used when committing transactions.

Throws:

PersistencyException

remove

public void remove(ItemPath itemPath,
          String path)
            throws PersistencyException

Throws:

PersistencyException

remove

public void remove(ItemPath itemPath,
          String path,
          Object locker)
            throws PersistencyException

Deletes a cluster from all writers

Throws:

PersistencyException

clearCache

public void clearCache(ItemPath itemPath,
              String path)

clearCache

public void clearCache(ItemPath itemPath)

clearCache

public void clearCache()

dumpCacheContents

public void dumpCacheContents(int logLevel)

begin

public void begin(Object locker)

commit

public void commit(Object locker)
            throws PersistencyException

Throws:

PersistencyException

abort

public void abort(Object locker)