oracle.toplink.descriptors
Class AllFieldsLockingPolicy

java.lang.Object
oracle.toplink.descriptors.FieldsLockingPolicy
oracle.toplink.descriptors.AllFieldsLockingPolicy

All Implemented Interfaces:

java.lang.Cloneable, oracle.toplink.internal.descriptors.OptimisticLockingPolicy, java.io.Serializable

public class AllFieldsLockingPolicy

extends FieldsLockingPolicy

Purpose: An implementation of the OptimisticLockingPolicy interface. This policy compares every field in the table in the WHERE clause when doing an update or a delete. If any field has been changed, an optimistic locking exception will be thrown.

NOTE: This policy can only be used inside a unit of work.

Since:

TopLink 2.1

See Also:

Serialized Form

Constructor Summary

AllFieldsLockingPolicy()
PUBLIC: Create a new all fields locking policy.

Methods inherited from class java.lang.Object

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

Constructor Detail

AllFieldsLockingPolicy

public AllFieldsLockingPolicy()

PUBLIC: Create a new all fields locking policy. A field locking policy is based on locking on all fields by comparing with their previous values to detect field-level collisions. Note: the unit of work must be used for all updates when using field locking.