PessimisticReadUpdateLockingStrategy (hibernate-jdk11 5.4.12.Final API)

java.lang.Object
- org.hibernate.dialect.lock.PessimisticReadUpdateLockingStrategy

所有已实现的接口:

LockingStrategy
```
public class PessimisticReadUpdateLockingStrategy
extends Object
implements LockingStrategy
```
A pessimistic locking strategy where the locks are obtained through update statements.
This strategy is valid for LockMode.PESSIMISTIC_READ This class is a clone of UpdateLockingStrategy.

从以下版本开始:

3.5

作者:

Steve Ebersole, Scott Marlow

构造器概要

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

方法概要

所有方法实例方法具体方法
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
  - PessimisticReadUpdateLockingStrategy
```
public PessimisticReadUpdateLockingStrategy(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)
```
    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
  - generateLockString
```
protected String generateLockString()
```
  - getLockMode
```
protected LockMode getLockMode()
```