Did anyone ever heard of Jack Rabbit, and how it behaves in OpenEHR context?
It seems to have much, an OpenEHR database needs.
It has support for structured and unstructured content, full text search, versioning, transactions, observation
https://jackrabbit.apache.org/oak/
It seems to be actively used:
Mailinglists: 3 lists and 38,604 messages. First list started in March 2012. There are 3 active lists, recently accumulating 9 messages per day.
Best regards
Bert Verhees
Hello Bert,
I have used Modeshape instead of Jackrabbit (though not for EHR impl). Both of them implements JCR- Java Content Repository specifications.
Some use cases: https://modeshape.wordpress.com/2012/10/18/when-is-modeshape-a-good-fit/
What I am attempting to do is to come up with a JCR content model for openEHR data persistence.
Since JCR has its own query language JQL2 I was hoping it would be possible to translate a AQL query into JQL2 using the content model as a mapping between the 2 query languages. Not sure if this is feasible at all or not.
Also there is some guidance about how to do the content modelling.
http://wiki.apache.org/jackrabbit/DavidsModel
My take is it would be possible to map an ADL/OPT into a content model and store it in JCR repository.
I am just in the initial phases of this and practically lost!
Would be very interested in participating on any development/implementation on the same.
Thanks,
Subhro.
I will check both Modeshape and JQL, maybe today
Thanks for the info
Bert
Hi Subhro,
Thanks again for the info, so I learned a new approach to OpenEHR datastorage, I was not aware of. After all these months (since January 2013 (three years), my discussion on LinkedIn delivered something which is new and useful for me.
It seems very promising, although I must study it more, and that cost much time, and time is the only thing which I do not have enough 
Modeshape is part of JBoss, and is advertised to be scalable, fast, and feature-rich.
So is Jack-Rabbit Oak.
Best regards
Bert Verhees