| org.apache.ojb.odmg.locking.LockStrategy
All known Subclasses: org.apache.ojb.odmg.locking.AbstractLockStrategy,
| LockStrategy | | public interface LockStrategy (Code) | | this interface defines method that a Locking Strategy must implement
according to the transaction isolation level it represents.
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| checkRead | | public boolean checkRead(TransactionImpl tx, Object obj)(Code) | | checks whether the specified Object obj is read-locked by Transaction tx.
Parameters:
tx - the transaction
Parameters:
obj - the Object to be checked true if lock exists, else false |
| checkWrite | | public boolean checkWrite(TransactionImpl tx, Object obj)(Code) | | checks whether the specified Object obj is write-locked by Transaction tx.
Parameters:
tx - the transaction
Parameters:
obj - the Object to be checked true if lock exists, else false |
| readLock | | public boolean readLock(TransactionImpl tx, Object obj)(Code) | | acquire a read lock on Object obj for Transaction tx.
Parameters:
tx - the transaction requesting the lock
Parameters:
obj - the Object to be locked true if successful, else false |
| releaseLock | | public boolean releaseLock(TransactionImpl tx, Object obj)(Code) | | release a lock on Object obj for Transaction tx.
Parameters:
tx - the transaction releasing the lock
Parameters:
obj - the Object to be unlocked true if successful, else false |
| upgradeLock | | public boolean upgradeLock(TransactionImpl tx, Object obj)(Code) | | acquire a lock upgrade (from read to write) lock on Object obj for Transaction tx.
Parameters:
tx - the transaction requesting the lock
Parameters:
obj - the Object to be locked true if successful, else false |
| writeLock | | public boolean writeLock(TransactionImpl tx, Object obj)(Code) | | acquire a write lock on Object obj for Transaction tx.
Parameters:
tx - the transaction requesting the lock
Parameters:
obj - the Object to be locked true if successful, else false |
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