Hi! Thanks a lot for the information.
/anders Antonello Provenzano skrev: > Anders, > > IKVM doesn't support the javax.transactions package. > > In fact, the main difference pointed out by neo4j between java and > .NET is the lack of support for X/Open XA resource management: this is > possible only by calling an "interop" OLEDB component, which is > non-native .NET, which should be implemented in C++ and deployed to > the host machine separately. Naturally, OLE development is forbidden > in Linux machines, which makes things tougher. > > While under .NET framework (since the 2.0 specifications there's the > inclusion of System.Transactions) it is provided a mechanism for > transactions, architecturally different from the X/Open specifications > (implemented with quite fidelity by javax.transactions), it is not > provided a mechanism to handle MTS or two-phase commits. > > Since in neo4j one of the main aspects it's the XAResource > implementation for persisting and retrieving data, the "port" is also > conceptually difficult. > > > Cheers. > Antonello > > > On Sun, May 3, 2009 at 9:59 AM, Anders Nawroth <and...@neotechnology.com> > wrote: > >> Hi! >> >> Have you tried using IKVM.NET? >> http://www.ikvm.net/ >> >> >> /anders >> >> Antonello Provenzano skrev: >> >>> Emil, >>> >>> I'm a good expert on .NET architecture and technology, having >>> contributed for years to the development of Mono and being a >>> recognized developer and architect in this domain. >>> >>> Last week I tried to implement a port version of neo4j for .NET, >>> applying the same concepts you implemented, not always plain porting >>> the code: Java and C# themselves are pretty different seen from >>> inside, and when you put in the middle also some architectural issues >>> like transactions and such (eg. the NIO extension), the things become >>> much less straight-forward. >>> >>> Although at the beginning my plan was to port in short time neo4j to >>> .NET, once I analyzed the full source code I've been aware of the >>> impossibility to accomplish this goal in small time: in fact, I >>> decided to start the implemenation of a brand new project based on the >>> concepts, rather than the actual code, of neo4j. This, as you can >>> guess, requires additional work for the architectural design, >>> prototyping and implementation, plus testing. >>> >>> In the short-medium term then, the best way will be to use a REST >>> solution, as you suggested (but I've already considered, in case of >>> not existence of native .NET solutions), which is not optimal by the >>> way, although viable for the bootstrap of the project. >>> >>> I hope we will keep in touch anyway, in case i would need your and >>> Neo's team assistance during the implementation of the .NET solution. >>> >>> Cheers! >>> Antonello >>> >>> >>> >>> On Sun, May 3, 2009 at 4:11 AM, Emil Eifrem <e...@neotechnology.com> wrote: >>> >>> >>>> On Sun, May 3, 2009 at 03:55, Antonello Provenzano <antone...@deveel.com> >>>> wrote: >>>> >>>> >>>>> I've found that neo4j would be perfect for my scope: unfortunately, it >>>>> is purely written in Java code and it's not portable to .NET, because >>>>> of the massive differences between the two architectures. >>>>> >>>>> Can you tell me if is it there any language binding or any port of >>>>> neo4j for .NET/Mono? >>>>> >>>>> >>>> Hi Antonello, >>>> >>>> There's no port and no language binding at the time. I agree with you >>>> that porting Neo4j to .NET would probably be require a substantial >>>> investment, although I'm certainly no expert at .NET. >>>> >>>> As for bindings, I don't know how hard that would be. Neo4j currently >>>> has bindings for a number of languages (Python, Jython, Ruby, Clojure) >>>> and sometimes they've been fairly easy to roll. The conceptual >>>> impedance between Java and C# is certainly close to zero, so maybe >>>> adding .NET bindings is not that hard. You're certainly welcome to >>>> give it a shot! >>>> >>>> Another thought: Would it work if you implemented your graph algos in >>>> Java using Neo4j, then wrapped them in a thin REST layer and used that >>>> as a backend to the rest of your app written in .NET? >>>> >>>> Cheers, >>>> >>>> -- >>>> Emil Eifrém, CEO [e...@neotechnology.com] >>>> Neo Technology, www.neotechnology.com >>>> Cell: +46 733 462 271 | US: 206 403 8808 >>>> http://twitter.com/emileifrem >>>> _______________________________________________ >>>> Neo mailing list >>>> User@lists.neo4j.org >>>> https://lists.neo4j.org/mailman/listinfo/user >>>> >>>> >>>> >>> _______________________________________________ >>> Neo mailing list >>> User@lists.neo4j.org >>> https://lists.neo4j.org/mailman/listinfo/user >>> >>> >> -- >> Anders Nawroth [and...@neotechnology.com] >> GTalk, Skype: anders.nawroth >> Phone: +46 737 894 163 >> http://twitter.com/nawroth >> http://blog.nawroth.com/ >> >> _______________________________________________ >> Neo mailing list >> User@lists.neo4j.org >> https://lists.neo4j.org/mailman/listinfo/user >> >> > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Anders Nawroth [and...@neotechnology.com] GTalk, Skype: anders.nawroth Phone: +46 737 894 163 http://twitter.com/nawroth http://blog.nawroth.com/ _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
