| org.apache.commons.transaction.locking.MultiLevelLock
| MultiLevelLock | | public interface MultiLevelLock (Code) | | A multi level lock. Depending on the implementation more than one owner may own a certain lock level on the same lock.
version:
$Id: MultiLevelLock.java 493628 2007-01-07 01:42:48Z joerg $
See Also: LockManager |
| Method Summary | |
| public boolean | acquire(Object ownerId, int targetLockLevel, boolean wait, boolean reentrant, long timeoutMSecs)
Tries to acquire a certain lock level on this lock. | | public int | getLockLevel(Object ownerId)
Retuns the highest lock level the specified owner holds on this lock or 0 if it holds no locks at all. | | public boolean | release(Object ownerId)
Releases any lock levels the specified owner may hold on this lock. |
| acquire | | public boolean acquire(Object ownerId, int targetLockLevel, boolean wait, boolean reentrant, long timeoutMSecs) throws InterruptedException(Code) | | Tries to acquire a certain lock level on this lock.
Parameters:
ownerId - a unique id identifying the entity that wants to acquire a certain lock level on this lock
Parameters:
targetLockLevel - the lock level to acquire
Parameters:
wait - true if this method shall block when the desired lock level can not be acquired
Parameters:
reentrant - true if lock levels of the same entity acquired earlier should not restrict compatibility with the lock level desired now
Parameters:
timeoutMSecs - if blocking is enabled by the wait parameter this specifies the maximum wait time in milliseconds true if the lock actually was acquired
throws:
InterruptedException - when the thread waiting on this method is interrupted |
| getLockLevel | | public int getLockLevel(Object ownerId)(Code) | | Retuns the highest lock level the specified owner holds on this lock or 0 if it holds no locks at all.
Parameters:
ownerId - a unique id identifying the entity that wants to know its highest lock level the highest lock level |
| release | | public boolean release(Object ownerId)(Code) | | Releases any lock levels the specified owner may hold on this lock.
Parameters:
ownerId - a unique id identifying the entity that wants to release all lock levels true if the lock actually was released, false in casethere was no lock held by the owner |
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