org.hibernate.usertype

Interface UserVersionType

All Superinterfaces:

Comparator, UserType

public interface UserVersionType
extends UserType, Comparator

A user type that may be used for a version property

Author:

Gavin King

Method Summary

Modifier and Type	Method and Description
Object	next(Object current, SharedSessionContractImplementor session) Increment the version.
Object	seed(SharedSessionContractImplementor session) Generate an initial version.

Methods inherited from interface org.hibernate.usertype.UserType

assemble, deepCopy, disassemble, equals, hashCode, isMutable, nullSafeGet, nullSafeSet, replace, returnedClass, sqlTypes

Methods inherited from interface java.util.Comparator

compare, comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Detail

seed

Object seed(SharedSessionContractImplementor session)

Generate an initial version.

Parameters:

session - The session from which this request originates. May be null; currently this only happens during startup when trying to determine the "unsaved value" of entities.

Returns:

an instance of the type

next

Object next(Object current,
            SharedSessionContractImplementor session)

Increment the version.

Parameters:

session - The session from which this request originates.

current - the current version

Returns:

an instance of the type