org.sourceforge.jemm.database.persistent.berkeley
Class BDbStorageEngineUserLockImpl

java.lang.Object
  org.sourceforge.jemm.database.persistent.berkeley.BDbStorageEngineUserLockImpl

All Implemented Interfaces:

StorageEngineUserLockIF

public class BDbStorageEngineUserLockImpl
extends java.lang.Object
implements StorageEngineUserLockIF

Constructor Summary

BDbStorageEngineUserLockImpl(com.sleepycat.persist.EntityStore store)

Method Summary

void	addClientLockReference(ClientThreadId clientThreadId, ID objectId) Add a reference from a client to the given object.
void	clearAll() Clear all lock information.
java.util.Set<ClientThreadIdRef>	getClientLockSet(ClientId clientId) Return a set of client-threads -> ids for the given client, this is the list of objects the given client is attempting to lock, or has a lock on.
UserLockInfo	getLockInfo(ID id) Retrieve the user lock information (lock queue) for the given id.
void	removeClientLockReference(ClientThreadId clientThreadId, ID objectId) Remove a reference from a client to the given object.
void	saveLockInfo(UserLockInfo info) Save an updated lock information.

Methods inherited from class java.lang.Object

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

Constructor Detail

BDbStorageEngineUserLockImpl

public BDbStorageEngineUserLockImpl(com.sleepycat.persist.EntityStore store)

Method Detail

getLockInfo

public UserLockInfo getLockInfo(ID id)

Description copied from interface: StorageEngineUserLockIF

Retrieve the user lock information (lock queue) for the given id.

Specified by:

getLockInfo in interface StorageEngineUserLockIF

Parameters:

id - The id of the lock object.

Returns:

The lock information for the given object.

saveLockInfo

public void saveLockInfo(UserLockInfo info)

Description copied from interface: StorageEngineUserLockIF

Save an updated lock information.

Specified by:

saveLockInfo in interface StorageEngineUserLockIF

Parameters:

info - The update lock information to save.

clearAll

public void clearAll()

Description copied from interface: StorageEngineUserLockIF

Clear all lock information. This includes both UserLockInfo instances and client lock information. This is generally performed at startup to ensure any old locks from previous sessions have been removed.

Specified by:

clearAll in interface StorageEngineUserLockIF

addClientLockReference

public void addClientLockReference(ClientThreadId clientThreadId,
                                   ID objectId)

Description copied from interface: StorageEngineUserLockIF

Add a reference from a client to the given object.

Specified by:

addClientLockReference in interface StorageEngineUserLockIF

Parameters:

clientThreadId - The target client thread

objectId - The object being referenced.

getClientLockSet

public java.util.Set<ClientThreadIdRef> getClientLockSet(ClientId clientId)

Description copied from interface: StorageEngineUserLockIF

Return a set of client-threads -> ids for the given client, this is the list of objects the given client is attempting to lock, or has a lock on.

Specified by:

getClientLockSet in interface StorageEngineUserLockIF

Parameters:

clientId - The target client id.

Returns:

The set of ids and client threads which are attempting to acquire them for the given client.

removeClientLockReference

public void removeClientLockReference(ClientThreadId clientThreadId,
                                      ID objectId)

Description copied from interface: StorageEngineUserLockIF

Remove a reference from a client to the given object.

Specified by:

removeClientLockReference in interface StorageEngineUserLockIF

Parameters:

clientThreadId - The target client.

objectId - The object being referenced.