PessimisticWriteUpdateLockingStrategy (Hibernate Core Aggregator 3.6.10.Final API)

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

All Implemented Interfaces:

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

Since:

3.5

Author:

Steve Ebersole, Scott Marlow

Constructor Summary

Constructors
Constructor and Description
`PessimisticWriteUpdateLockingStrategy(Lockable lockable, LockMode lockMode)` Construct a locking strategy based on SQL UPDATE statements.

Method Summary

Methods
Modifier and Type	Method and Description
`protected String`	`generateLockString()`
`protected LockMode`	`getLockMode()`
`void`	`lock(Serializable id, Object version, Object object, int timeout, SessionImplementor 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 Detail
  - 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 - Indictates the type of lock to be acquired. Note that read-locks are not valid for this strategy.
- Method Detail
  - lock
```
public void lock(Serializable id,
        Object version,
        Object object,
        int timeout,
        SessionImplementor session)
          throws StaleObjectStateException,
                 JDBCException
```
    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
    
    Throws:
    
    StaleObjectStateException - Indicates an optimistic lock failure as part of acquiring the requested database lock.
    
    JDBCException - Indicates errors from the JDBC driver.
    See Also:
    LockingStrategy.lock(java.io.Serializable, java.lang.Object, java.lang.Object, int, org.hibernate.engine.SessionImplementor)
  - generateLockString
```
protected String generateLockString()
```
  - getLockMode
```
protected LockMode getLockMode()
```

Class PessimisticWriteUpdateLockingStrategy

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PessimisticWriteUpdateLockingStrategy

Method Detail

lock

generateLockString

getLockMode