程序包 org.hibernate.dialect.lock

类 UpdateLockingStrategy

java.lang.Object

org.hibernate.dialect.lock.UpdateLockingStrategy

所有已实现的接口:

LockingStrategy

public class UpdateLockingStrategy
extends Object
implements LockingStrategy

A locking strategy where the locks are obtained through update statements.

This strategy is not valid for read style locks.

从以下版本开始:

3.2

作者:

Steve Ebersole

构造器概要

构造器

构造器	说明
UpdateLockingStrategy(Lockable lockable, LockMode lockMode)	Construct a locking strategy based on SQL UPDATE statements.

方法概要

修饰符和类型	方法	说明
protected String	generateLockString()
protected LockMode	getLockMode()
void	lock(Serializable 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.

从类继承的方法 java.lang.Object

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

构造器详细资料

UpdateLockingStrategy

public UpdateLockingStrategy(Lockable lockable,
                             LockMode lockMode)

Construct a locking strategy based on SQL UPDATE statements.

参数:

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.

方法详细资料

lock

public void lock(Serializable id,
                 Object version,
                 Object object,
                 int timeout,
                 SharedSessionContractImplementor session)
          throws StaleObjectStateException,
                 JDBCException

从接口复制的说明: LockingStrategy

Acquire an appropriate type of lock on the underlying data that will endure until the end of the current transaction.

指定者:

lock 在接口中 LockingStrategy

参数:

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

抛出:

StaleObjectStateException - Indicates an inability to locate the database row as part of acquiring the requested lock.

JDBCException

generateLockString

protected String generateLockString()

getLockMode

protected LockMode getLockMode()