Package org.hibernate.dialect.lock
Class PessimisticWriteUpdateLockingStrategy
- java.lang.Object
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- org.hibernate.dialect.lock.PessimisticWriteUpdateLockingStrategy
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- All Implemented Interfaces:
LockingStrategy
public class PessimisticWriteUpdateLockingStrategy extends Object implements LockingStrategy
A pessimistic locking strategy where a lock is obtained via an update statement.This strategy is valid for
LockMode.PESSIMISTIC_WRITE
.This class is a clone of
UpdateLockingStrategy
.- Since:
- 3.5
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Constructor Summary
Constructors Constructor Description PessimisticWriteUpdateLockingStrategy(Lockable lockable, LockMode lockMode)
Construct a locking strategy based on SQL UPDATE statements.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected String
generateLockString()
protected LockMode
getLockMode()
void
lock(Object id, Object version, Object object, int timeout, EventSource 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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Constructor Detail
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PessimisticWriteUpdateLockingStrategy
public PessimisticWriteUpdateLockingStrategy(Lockable lockable, LockMode lockMode)
Construct a locking strategy based on SQL UPDATE statements.- Parameters:
lockable
- The metadata for the entity to be locked.lockMode
- Indicates the type of lock to be acquired. Note that read-locks are not valid for this strategy.
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Method Detail
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lock
public void lock(Object id, Object version, Object object, int timeout, EventSource session)
Description copied from interface:LockingStrategy
Acquire an appropriate type of lock on the underlying data that will endure until the end of the current transaction.- Specified by:
lock
in interfaceLockingStrategy
- Parameters:
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 originated
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generateLockString
protected String generateLockString()
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getLockMode
protected LockMode getLockMode()
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