I've been able to create a nice modeling layer for using neo4j from Django. I'll see if I can get it to work with the admin framework (and recover some files that the Jython build.xml deleted for me) before I release it. I'll try and find time for that ASAP, but I'm swamped at the moment so it might take a while. Just wanted to let you all know that I have something, that it's working, and that I'll publish it soon.
Happy holliday hacking! /Tobias On Fri, Dec 5, 2008 at 12:11 AM, James Richards <hei...@mac.com> wrote: > > >> Along the > >> lines of Django integration, this is something that I actually took a > >> prolonged look at, in the midst of other projects. I was interested > >> in making Neo4J a swappable database backend for the standard Django > >> orm. The advantage of this is that Django Model and Admin classes > >> could integrate directly with Neo4J. There are some relational > >> assumptions in the Django orm layer that are, probably, unavoidable > >> in > >> the current thinking on the "standard" web application stack. I > >> started to hack the Neo4J python layer into the Django backends but > >> have been working on a different project for the last couple of weeks > >> so I haven't returned to the initial code that I wrote. > > > > > > I've had a look at creating a Django database backend using Neo4j as > > well, > > but the relational assumptions were pretty discouraging. One thought > > I had > > was to implement a version of the model package (the ORM) that uses > > Neo4j. > > This would mean that you had to use a different (but very similar) > > system to > > define the model, but could then use the same application logic. The > > big > > downside of this is of course that it would not work with the Django > > Admin > > system, and the Admin system is one of the most appealing features of > > Django. > > I ran into a similar conclusion regarding the relational assumptions > of the orm layer. This is what made me stop to see if I should > rethink the strategy. At the time I was the only person I knew who > was interested in that approach so there wasn't much impetus behind > the idea. > > > If you think it's possible to create a database backend without > > having to > > parse SQL that could be an exellent approach. > > And if you would be willing to share the code you have started in that > > direction it would be even better. ;) > > I think it's possible but I only spent a day or so on the code so I > need to make something a bit more usable. > > > After my last e-mail I got an idea that I should have gotten > > earlier: since > > I'm doing a presentation on Jython and Django on Jython on Devoxx > > next week > > it would be cool to integrate Neo4j in that demo. So I would like to > > get > > something (that might not be perfect, but that works) up and running > > by > > then. > > I'm running on top of JPype at the moment but I can switch my > installation back to jython. I plan on making a very simple Django > application that uses Neo directly to give myself a little more > familiarity with Neo's API (have only been writing simple examples). > > >> What are your thoughts on integrating below the visible orm level? > >> To > >> me, it seems quite feasible but would perhaps need some sort of an > >> agreed upon set of relationship types for representing class > >> hierarchies: > >> > >> 1) A standard "IS A" relationship for subclassing/interface > >> implementation [allowing for jython Python-As-Java-Is-Java-As-Python > >> thinking] > >> 2) A standard "HAS A" type applied upon class members, to distinguish > >> class-centric data from more arbitrary graph data > > > > > > The "IS A" relation might be a good idea, but I have some doubts on > > "HAS A", > > since it would require linear scanning for members. But for the > > read-modify-write approach of an ORM this whould be acceptable. > > Is there any other way to decorate node properties so that they are > classifiable as "class level"? I'm just thinking of how Neo could act > as an orm layer so forgive me if the perspective is one-directional. > > > > I started the shell of a Neo admin app in one of my Django > installations. I'll work on it as times permits. > > Thanks for the reply, > > James > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Tobias Ivarsson <tobias.ivars...@neotechnology.com> Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
