[hibernate-issues] [Hibernate-JIRA] Commented: (ANN-539) Generics and @Embedded doesn't work

[Emmanuel Bernard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/ANN-539?page=comments#action_25869 ] 

Emmanuel Bernard commented on ANN-539:
--------------------------------------

Thing is, you have to have an IntegerRange at some point in your system, otherwise, what do you fill up setBounds() with?
And that's the same for Hibernate, it needs to have a class it can call newInstance() on when the object is hydrated.

> Generics and @Embedded doesn't work
> -----------------------------------
>
>          Key: ANN-539
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-539
>      Project: Hibernate Annotations
>         Type: Bug

>     Versions: 3.2.1
>  Environment: Hibernate 3.2.1, Oracle 10XE
>     Reporter: Christophe Vanfleteren
>  Attachments: generic.zip
>
>
> It doesn't seem to be possible to use a plain generic field as a component,
> for example:
> @Embedded
> private Range<Integer> bounds
> doesn't work (you get an "org.hibernate.AnnotationException: Property generic.GenericRange.min has an unbound type and no explicit target entity. Resolve this Generic usage issue or set an explicit target attribute (eg @OneToMany(target=) or use an explicit @Type") error.
> It does work when you extend the generic class in which you define the type (IntegerRange extends Range<Integer>)
> for example:
> @Embedded
> private IntegerRange bounds
> works
> I've attached some classes that demeonstrate this problem. This issue was raised before in http://opensource.atlassian.com/projects/hibernate/browse/ANN-406?page=comments, but was rejected since no testcase was provided.

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