UserVersionType (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.usertype
Interface UserVersionType

A user type that may be used for a version property

Method Summary

Object next(Object current, SessionImplementor session)
Increment the version.

Object seed(SessionImplementor 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, equals

Method Detail

public Object seed(SessionImplementor 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

public Object next(Object current,
                   SessionImplementor session)

Increment the version.

Parameters:: session - The session from which this request originates.; current - the current version
Returns:: an instance of the type