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Is there unsaved-value="" equivalent in JPA annota

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uncutjade

Post subject: Is there unsaved-value="" equivalent in JPA annota

Posted: Mon Jan 07, 2008 11:37 pm

Newbie

Joined: Thu Jan 03, 2008 7:21 pm
Posts: 15

i.e. How do I specify unsaved-value="" for the following

Code:

@Id @GeneratedValue(strategy=GenerationType.AUTO)
public Long getId() {
  return id;
}

Thanks.

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uncutjade

Post subject:

Posted: Tue Jan 08, 2008 12:35 am

Newbie

Joined: Thu Jan 03, 2008 7:21 pm
Posts: 15

Probably No.

Identifier mappings

The unsaved-value attribute is now optional, in most cases. Hibernate will use unsaved-value="0" as the default, where that is sensible.

Note: In Hibernate3, it is no longer necessary to implement Interceptor.isUnsaved() when using natural keys (assigned identifiers or composite identifiers) and detached objects. In the absence of any "hints", Hibernate will query the database to determine if an object is new or detached. However, the use of Interceptor.isUnsaved() might result in higher performance, since the database query can be avoided.

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