com.j_spaces.kernel.locks

Interface IBasicLockManager<T extends ILockObject>

All Known Implementing Classes:

AllInCacheLockManager, BasicEvictableLockManager, BlobStoreLockManager, MVCCLockManager, TieredStorageLockManager

public interface IBasicLockManager<T extends ILockObject>

Since:

6.5 contains the basic methods for acuring a lock object- i.e. an object that will be locked in order to lock the entity (entry or template) represented by it

Version:

1.0

Author:

Yechiel Fefer

Method Summary

Modifier and Type	Method and Description
void	freeLockObject(ILockObject lockObject) free the lock object - no more needed by this thread
ILockObject	getLockObject(String subjectUid) based only on subject's uid, return a lock object in order to lock the represented subject this method is relevant only for evictable objects
ILockObject	getLockObject(T subject) based on subject, return a lock object in order to lock the represented subject.
boolean	isEntryLocksItsSelf(T entry) true if the lock object is the subject itself (i.e.

Method Detail

getLockObject

ILockObject getLockObject(T subject)

based on subject, return a lock object in order to lock the represented subject.

If the subject is part of evictable from space (like lru) or evicatble from cache (like in TieredStorage with cache rule) we use the subject itself, otherwise we use per-logical subject a different object.

Note - template and transient entry are not evictable.

Returns:

the lock object

getLockObject

ILockObject getLockObject(String subjectUid)

based only on subject's uid, return a lock object in order to lock the represented subject this method is relevant only for evictable objects

Returns:

the lock object

freeLockObject

void freeLockObject(ILockObject lockObject)

free the lock object - no more needed by this thread

Parameters:

lockObject - the lock object

isEntryLocksItsSelf

boolean isEntryLocksItsSelf(T entry)

true if the lock object is the subject itself (i.e. entry or template), false if it is representing object. Note - this method is for entries only!.

Returns:

true if is the subject itself