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http://opensource.atlassian.com/projects/hibernate/browse/ANN-9?page=comm...
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Barney Boisvert commented on ANN-9:
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Pascal,
Yeah, it's kind of annoying. Note that you only have to map the interface if you need
Hibernate to be aware of it. You can still use the interfaces in your code and only tell
Hibernate about the implementations. Not suitable for all cases, of course, and it puts a
cramp on doing polymorphic queries (HQL or otherwise) when Hibernate's not aware of
the interface, but it can let you use more annotations. Another option would to annotate
your interfaces, and then use APT to postprocess all your annotations in *.hbm.xml files
automatically, but that's probably quite a bit more work than it's worth.
Support interface inheritance mapping
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Key: ANN-9
URL:
http://opensource.atlassian.com/projects/hibernate/browse/ANN-9
Project: Hibernate Annotations
Type: Improvement
Components: binder
Versions: 3.1beta3
Reporter: Gili
Attachments: hibernate3-annotations-3.1beta5-3896-3948.diff,
hibernate3-annotations-3.1beta5-3896-4138.diff
It should be possible to create a mapping with interfaces, as described by the
documentation here:
http://www.hibernate.org/hib_docs/v3/reference/en/html_single/#inheritanc...
Specifically right now it is impossible to annotate interfaces and according to HBX-231
even if you could @Entity is only meant to get used on classes so the question becomes
"what do you annotate it with?"
As I pointed out here
http://forum.hibernate.org/viewtopic.php?p=2238824#2238824 the
additional problem seems to be that XDoclet doesn't support interface annotation
either (
http://opensource.atlassian.com/projects/xdoclet/browse/XDT-1345) so I'm left
without a workaround.
I can't convert the interfaces to abstract classes because I implement multiple
interfaces in my application and Java does not do multiple inheritance.
If you know of a nice workaround, please let me know :)
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