Hi Emmanuel,
thanks for your reply. I read through the hibernate license before
posting to this newsgroup in order not to bother people unnecessarily.
Problem is that it only talks about redistribution of code and code
changes. It does not say anything about interface definitions like the
XML definition in the hbm.xml files. If the hibernate XML interface
definition were nothing but a pure interface ("serves only to connect
systems") there would be no problem since interfaces used in that sense
are not protected by copyright law (contain no intellecutal effort and
are therefore not worthy of copyright protection). But these XML
definitions expose some intellectual effort (e.g. how to map 1:n, m:n,
... relationships etc.) that goes beyond a bare interface only made to
connect systems and therefore seems worthy of protection by copyright
law. So the issue is tricky. I might have to invent my own mapping
syntax just to be sure not to break some license statement ... But I'm
still hoping for some somewhat official statement whether the hbm.xml
sytax definition is part of the Hibernate license or not :-).
Regards, Oliver Plohmann
Emmanuel Bernard wrote:
Hibernate is LGPL 2.1.
Here is our public statement
http://www.hibernate.org/356.html
As long as your code is compliant with the LGPL 2.1, you're fine.
--
Emmanuel Bernard
http://in.relation.to/Bloggers/Emmanuel |
http://blog.emmanuelbernard.com | http://twitter.com/emmanuelbernard
Hibernate Search in Action (http://is.gd/Dl1)
On Jul 24, 2008, at 21:33, Oliver Plohmann wrote:
Hello,
I already posted this question to a hibernate forum but didn't
receive any answer. That's why I saw no way round posting to this
mailing list.
I'm working on a mapping tool that maps Java objects to RFCs. This is
somewhat similar to mapping Java objects to relational database
tables (though much simpler). I therefore got the idea to use the
hibernate hbm.xml mapping syntax for this Java-to-RFC mapping tool,
because there is no point in re-inventing the wheel and many many
people know hibernate and will therefore quickly feel at home when
using this Java-to-RFC mapping tool if it uses the same mapping XML
syntax as hibernate.
My question is now whether also this hbm.xml mapping syntax is
completely free and may be used for another purpose than hibernate
itself or whether permission has to be granted by the authors of
hibernate. I just want to be really sure before I start, because
changing the mapping syntax in the middle of the race is a lot of work.
Thanks in advance, Oliver Plohmann
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