Class AbstractPessimisticUpdateLockingStrategy

java.lang.Object

org.hibernate.dialect.lock.AbstractPessimisticUpdateLockingStrategy

All Implemented Interfaces:

LockingStrategy

Direct Known Subclasses:

PessimisticReadUpdateLockingStrategy, PessimisticWriteUpdateLockingStrategy, UpdateLockingStrategy

public abstract class AbstractPessimisticUpdateLockingStrategy
extends Object
implements LockingStrategy

Common implementation of PessimisticReadUpdateLockingStrategy and PessimisticWriteUpdateLockingStrategy.

Since:

7.2

Constructor Summary

Constructors

Constructor	Description
AbstractPessimisticUpdateLockingStrategy(EntityPersister lockable, LockMode lockMode)	Construct a locking strategy based on SQL UPDATE statements.

Method Summary

Modifier and Type	Method	Description
protected String	generateLockString()
protected LockMode	getLockMode()
void	lock(Object id, Object version, Object object, int timeout, SharedSessionContractImplementor 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 Object

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

Methods inherited from interface LockingStrategy

lock, lock

Constructor Details

AbstractPessimisticUpdateLockingStrategy

public AbstractPessimisticUpdateLockingStrategy(EntityPersister 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.

Method Details

lock

public void lock(Object id,
 Object version,
 Object object,
 int timeout,
 SharedSessionContractImplementor 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

generateLockString

protected String generateLockString()

getLockMode

protected LockMode getLockMode()