public class UpdateLockingStrategy extends Object implements LockingStrategy
Constructor and Description |
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UpdateLockingStrategy(Lockable lockable,
LockMode lockMode)
Construct a locking strategy based on SQL UPDATE statements.
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Modifier and Type | Method and Description |
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protected String |
generateLockString() |
protected LockMode |
getLockMode() |
void |
lock(Serializable id,
Object version,
Object object,
int timeout,
SessionImplementor session)
Acquire an appropriate type of lock on the underlying data that will
endure until the end of the current transaction.
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public UpdateLockingStrategy(Lockable lockable, LockMode lockMode)
lockable
- The metadata for the entity to be locked.lockMode
- Indictates the type of lock to be acquired. Note that
read-locks are not valid for this strategy.public void lock(Serializable id, Object version, Object object, int timeout, SessionImplementor session) throws StaleObjectStateException, JDBCException
LockingStrategy
lock
in interface LockingStrategy
id
- The id of the row to be lockedversion
- The current version (or null if not versioned)object
- The object logically being locked (currently not used)timeout
- timeout in milliseconds, 0 = no wait, -1 = wait indefinitelysession
- The session from which the lock request originatedStaleObjectStateException
- Indicates an inability to locate the database row as part of acquiring
the requested lock.JDBCException
protected String generateLockString()
protected LockMode getLockMode()
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