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Cascades.VersionValue (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.engine
Class Cascades.VersionValue

java.lang.Object
  net.sf.hibernate.engine.Cascades.VersionValue

Enclosing class:

Cascades

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public static class Cascades.VersionValue

extends Object

A strategy for determining if a version value is an version of a new transient instance or a previously persistent transient instance. The strategy is determined by the unsaved-value attribute in the mapping file.

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Constructor Summary
protected	Cascades.VersionValue()
	Cascades.VersionValue(Object value)           Assume the transient instance is newly instantiated if its version is null or equal to value

 

Method Summary
Boolean	isUnsaved(Object version)           Does the given version belong to a new instance?

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

Cascades.VersionValue

protected Cascades.VersionValue()

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Cascades.VersionValue

public Cascades.VersionValue(Object value)

Assume the transient instance is newly instantiated if its version is null or equal to value

Parameters:

value - value to compare to

Method Detail

isUnsaved

public Boolean isUnsaved(Object version)
                  throws MappingException

Does the given version belong to a new instance?

Parameters:

version - version to check

Returns:

true is unsaved, false is saved, null is undefined

Throws:

MappingException

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