Hi, You could also give a try to Objectify if you're looking for something much simpler than JPA/JDO although highly efficient. regards didier
On Nov 3, 5:57 pm, Patrick <[email protected]> wrote: > I'm using JDO now. Everythings ok > > On Nov 3, 2:04 pm, Patrick <[email protected]> wrote: > > > So I'm trying to set up a REST server and I want to use JPA for > > persistence. > > > But when I my app I get this error: > > > javax.persistence.PersistenceException: Provider error. Provider: > > org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider > > at javax.persistence.Persistence.createFactory(Persistence.java:176) > > at > > javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: > > 112) > > at > > javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: > > 66) > > > Caused by: javax.jdo.JDOFatalUserException: No available StoreManager > > found for the datastore URL key "". Please make sure you have all > > relevant plugins in the CLASSPATH (e.g datanucleus-rdbms?, datanucleus- > > db4o?), and consider setting the persistence property > > "datanucleus.storeManagerType" to the type of store you are using e.g > > rdbms, db4o > > > I've checked and double checked the web-inf/lib and follow everything > > I saw in > > :http://code.google.com/intl/fr-FR/appengine/docs/java/datastore/using... > > > Anyone know what probably cause this issue? -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
