Package org.hibernate.dialect.lock

Class PessimisticForceIncrementLockingStrategy

java.lang.Object

org.hibernate.dialect.lock.PessimisticForceIncrementLockingStrategy

All Implemented Interfaces:

LockingStrategy

public class PessimisticForceIncrementLockingStrategy
extends Object
implements LockingStrategy

A pessimistic locking strategy where a lock is obtained by incrementing the version immediately, obtaining an exclusive write lock by side effect.

This strategy is valid for LockMode.PESSIMISTIC_FORCE_INCREMENT.

Since:

3.5

Author:

Scott Marlow

Constructor Summary

Constructors

Constructor	Description
PessimisticForceIncrementLockingStrategy(Lockable lockable, LockMode lockMode)	Construct locking strategy.

Method Summary

Modifier and Type	Method	Description
protected LockMode	getLockMode()	Retrieve the specific lock mode defined.
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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PessimisticForceIncrementLockingStrategy

public PessimisticForceIncrementLockingStrategy(Lockable lockable,
 LockMode lockMode)

Construct locking strategy.

Parameters:

lockable - The metadata for the entity to be locked.

lockMode - Indicates the type of lock to be acquired.

Method Details

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 interface LockingStrategy

Parameters:

id - The id of the row to be locked

version - 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 indefinitely

session - The session from which the lock request originated

getLockMode

protected LockMode getLockMode()

Retrieve the specific lock mode defined.

Returns:

The specific lock mode.