[hibernate-issues] [Hibernate-JIRA] Commented: (ANN-539) Generics and @Embedded doesn't work
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http://opensource.atlassian.com/projects/hibernate/browse/ANN-539?page=co...
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Emmanuel Bernard commented on ANN-539:
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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
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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=co...,
but was rejected since no testcase was provided.
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