You need the Neo4j proper in your Play lib directory. Here is a Maven pom.xml file that will take care of that for you.
**BE CAREFUL** mvn clean will delete all the jars in your lib folder. Remove the clean section if you don't want that. https://gist.github.com/a3a5106efdaaade10496 Run 'mvn initialize' from your Play app directory to copy all jar to lib. Run 'mvn clean' to delete them. If you change Neo4j versions you will want to run a clean and then initialize. Cheers, McKinley On Thu, Sep 15, 2011 at 5:10 PM, henry cleland <[email protected]> wrote: > Hi peter, > I am tryn to use jo4neo with playframework.... > firstly, im unable to resolve it as a dependency directly from maven, > > secondly, with my manually downloaded lib from > http://jo4neo.googlecode.com/svn/trunk/repo/thewebsemantic/jo4neo/0.4.1/ > and noe4j from maven, when i try to run my application is it the error i > get: > > Internal Server Error (500) for request GET /Rendezvous/index > > Oops: NoClassDefFoundError > An unexpected error occured caused by exception NoClassDefFoundError: > org/neo4j/index/IndexService > > play.exceptions.UnexpectedException: Unexpected Error > at play.mvc.ActionInvoker.invoke(ActionInvoker.java:255) > at Invocation.HTTP Request(Play!) > Caused by: java.lang.NoClassDefFoundError: org/neo4j/index/IndexService > at jo4neo.impl.ObjectGraphImpl.<init>(ObjectGraphImpl.java:29) > at jo4neo.impl.ObjectGraphProvider.create(ObjectGraphProvider.java:10) > at jo4neo.ObjectGraphFactory.get(ObjectGraphFactory.java:36) > at controllers.Rendezvous.<clinit>(Rendezvous.java:28) > at sun.misc.Unsafe.ensureClassInitialized(Native Method) > at play.utils.Java.parameterNames(Java.java:193) > at play.mvc.ActionInvoker.getActionMethodArgs(ActionInvoker.java:607) > at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:475) > at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:470) > at play.mvc.ActionInvoker.invoke(ActionInvoker.java:158) > ... 1 more > Caused by: java.lang.ClassNotFoundException: org.neo4j.index.IndexService > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:321) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:266) > ... 11 more > > > On Thu, Sep 15, 2011 at 9:15 PM, Peter Neubauer < > [email protected]> wrote: > > > Henry, > > Anything you can share about jo4neo problems with missing files? I have > > commit access to the repo... > > > > /peter > > > > Sent from my phone. > > On Sep 15, 2011 9:52 PM, "henry cleland" <[email protected]> wrote: > > > oh great!!!, > > > I'll be earnestly looking out for the example. I did hit the wall with > my > > > jo4noe. There is a required file that is not in the package. > > > and this has been both intellectually stimulating and frustrating. > > > I do appreciate your advice on manually mapping the classes to graph > > models > > > and i want to try that once again hoping that this time i will be > > > successful. > > > I really am looking forward to the example so i know how to approach my > > > design. > > > > > > On Thu, Sep 15, 2011 at 7:27 PM, McKinley <[email protected]> > > wrote: > > > > > >> I would be happy to share a Neo4j Play framework app with you. I'll > > isolate > > >> a small example and post it. jo4neo looks interesting, but it is not > too > > >> hard to manually map a few classes to a simple graph model and the > > >> experience will be beneficial. The graph model is of a different and > > finer > > >> grain than class based OOP and you shouldn't miss the chance for that > to > > >> stimulate new ideas. > > >> > > >> Unfortunately I have too many work deadlines right now, but this > weekend > > I > > >> will post the Play plugin and a sample app. However, I'm always happy > to > > be > > >> distracted with Neo4j and Play questions so feel free to ask as you > dive > > in > > >> :) > > >> > > >> Cheers, > > >> > > >> McKinley > > >> > > >> On Thu, Sep 15, 2011 at 9:20 AM, henry cleland <[email protected]> > > >> wrote: > > >> > > >> > hiya, > > >> > thanx for your response. > > >> > wrapping the models into java classes is a bit challenging for me > cos > > i > > >> > cant get my head around how the persistence layer will handle that. > > After > > >> > the post i did a search for a mapper and found jo4neo, and im > > currently > > >> tryn > > >> > to use that. > > >> > Having challenges with how tho make the model persist. > > >> > > > >> > I would be very grateful again if you could give me a small sample > > model > > >> > implementation for neo such that the controller can persist it. > > >> > My guess is i need my User Object and Interface to wrap the object > > into > > a > > >> > node or vice versa but how to store, lookup and retrieve it is my > > >> challenge. > > >> > > > >> > I do strongly wish you reconsider and release your model earlier. or > > at > > >> the > > >> > least i would be very grateful if i could jst view your repo to he > how > > >> your > > >> > handled stuff. > > >> > > > >> > > > >> _______________________________________________ > > >> Neo4j mailing list > > >> [email protected] > > >> https://lists.neo4j.org/mailman/listinfo/user > > >> > > > > > > > > > > > > -- > > > Regards, hnocleland > > > _______________________________________________ > > > Neo4j mailing list > > > [email protected] > > > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > > Neo4j mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > > > > > -- > Regards, hnocleland > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
