Hi Serge,
> Btw I seem to remember somebody proposing a mapping layer
> implementation
> here. Maybe Sandro can find it in the archives ?
as it would have anser my question, here it is:
At level 5, with the thread starting at the 8th of december with the subject "Mapping of Items..."
http://news.gmane.org/gmane.comp.apache.jackrabbit.devel
Or the direct links: o |-http://article.gmane.org/gmane.comp.apache.jackrabbit.devel/722/match=+mapping+items+ |--http://article.gmane.org/gmane.comp.apache.jackrabbit.devel/723 |--http://article.gmane.org/gmane.comp.apache.jackrabbit.devel/725/match=+mapping+items+
Christophe said, he want to implement the mapping in JCMS - a CMS project (supporting Jackrabbit) hosted at portals.apache.org. Next time I will search before I post.
Best regards,
Sandro
Serge Huber wrote:
Hi David,
The only thing in JCR that is a little unusual when mapping to ORM is versioning. Do we need to version all the previous object states ? Or were you thinking about a mapping that doesn't use versioning ?
All the rest seems like a good fit though : locking, search, referencing, etc..
Btw I seem to remember somebody proposing a mapping layer implementation here. Maybe Sandro can find it in the archives ?
Regards, Serge Huber.
David Nuescheler wrote:
hi sandro,
thanks for your post, i think it is a very interesting topic.
as a matter of fact i discussed things like a hibernate or
jdo layer on top of jcr with a couple of people, and if i haven't completely misread your first post may be a similar proposition.
i personally (of course ;)) believe that a repository may offer
a very good persistence layer for things like POJO's in particular with respect to features like inheritance, which particularly for RDBMSes are unnatural to handle.
thoughts??
regards, david
On Thu, 17 Mar 2005 18:18:16 +0100, Sandro B�hme <[EMAIL PROTECTED]> wrote:
Hello again,
as there is no feedback - do I miss something? Would'nt it be best practice to map the business logic java bean classes to node types? E.g. an OrderBean with the property orderItem would map to an "Order"-NodeType with a ChildNodeDef "OrderItem". Assuming the "OrderItem"-NodeType (or it's ChildNodeDef's) has all needed atomic properties (PropertyDef's). In my opinion, creating an initial node type hierarchy out of java beans shouldn't be that hard as a first step. Of course, keeping the mapping during remove or rename tasks for node types would be harder. I just don't want to start working on it, if anybody of you already know that I missed something and it makes no sense in this way. Thank you in advance for your time.
Best regards,
Sandro
Sandro B�hme wrote:
Hello,
in our project I would like to generate the JCR nodetype structure out
of a java bean class structure. If I'am right I think it is needed quite
often and I wonder if there is already such a library around. Does
anybody know of such a library? If not, I would try to create a first
version of it.
Best regards,
Sandro
