Interface UserVersionType<T>

All Superinterfaces:

Comparator<T>, UserType<T>

public interface UserVersionType<T>
extends UserType<T>, Comparator<T>

A user type that may be used for a version property

Method Summary

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

Methods inherited from interface Comparator

compare, equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface UserType

assemble, deepCopy, disassemble, equals, getDefaultSqlLength, getDefaultSqlLength, getDefaultSqlPrecision, getDefaultSqlPrecision, getDefaultSqlScale, getDefaultSqlScale, getSqlType, getValueConverter, hashCode, isComparable, isMutable, nullSafeGet, nullSafeGet, nullSafeSet, nullSafeSet, replace, returnedClass

Method Details

seed

T 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

T next(T current,
 SharedSessionContractImplementor session)

Increment the version.

Parameters:

current - the current version

session - The session from which this request originates.

Returns:

an instance of the type