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EJB3 annotations [message #50607]

Fri, 15 September 2006 06:09

Eclipse User

Originally posted by: xkamlesh.yahoo.com

How do I get ASSIGNED attribute for ID generator class like

<id name="id" type="java.lang.String" column="'id'">
<generator class="assigned">
</generator>
</id>

I use EJB3 Column annotation. It works for AUTO generator but for ASSIGNED
it
throws the following exception.

SEVERE: Error setting feature 'strategy' [Cannot convert 'ASSIGNED' to
'GenerationType' type] annotation: http://ejb.elver.org/GeneratedValue

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Re: EJB3 annotations [message #50631 is a reply to message #50607]

Fri, 15 September 2006 07:08

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Kamlesh,
Afaik assigned is the default strategy if no generator is specified (for hibernate).

Assigned is a hibernate specific value which is not part of the ejb3 spec.

In the latest teneo version you can specify hibernate specific generators:
If you want to use hibernate specific generators then you should use the GenericGenerator annotation
(for more info see the Hibernate Annotation Extensions).

As an example this annotation should be placed at package level in an eannotation (using the source:
teneo.jpa):
@GenericGenerator(name="hibseq", strategy = "hilo",
parameters = {
@Parameter(name="table", value = "hilo_table"),
@Parameter(name="column", value="the_hilo_column")
}
)

and then in the id field this annotation can be used (specified in an eannotation with source
teneo.jpa):
@Id @GeneratedValue(generator="hibseq")

Instead of eannotations you can also specify the annotations in a separate xml file.

gr. Martin

Kamlesh wrote:
> How do I get ASSIGNED attribute for ID generator class like
>
> <id name="id" type="java.lang.String" column="'id'">
> <generator class="assigned">
> </generator>
> </id>
>
> I use EJB3 Column annotation. It works for AUTO generator but for
> ASSIGNED it
> throws the following exception.
>
> SEVERE: Error setting feature 'strategy' [Cannot convert 'ASSIGNED' to
> 'GenerationType' type] annotation: http://ejb.elver.org/GeneratedValue
>

--

With Regards, Martin Taal

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