Hi, I have serious trouble setting up my GWT Project. I have to use Derby and JPA.
I installed the eclipselink plugin and tried the following: Set up a new GWT Project (with GWT 1.7.1). Didn't touch anything there yet. Then converted it into a JPA Project. (Which added persistence.xml and some Libraries) Created a annotated class. And changed the standard GreetingServiceImpl.java which is installed with the new web project wizard. In it I get a EntityManagerFactory and create a Entity out of it. That's all i want to do for now. My persistence.xml looks like that: <?xml version="1.0" encoding="UTF-8"?> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/ persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";> <persistence-unit name="TestProject"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <class>myproject.TestClass</class> <properties> <property name="eclipselink.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/> <property name="eclipselink.jdbc.url" value="jdbc:derby://localhost: 1527/sample;create=true"/> <property name="eclipselink.jdbc.user" value="app"/> <property name="eclipselink.jdbc.password" value="app"/> <property name="eclipselink.ddl-generation" value="create-tables"/> </properties> </persistence-unit> </persistence> But when i try to run it, i get this Exception: Caused by: org.datanucleus.exceptions.NucleusUserException: 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 been looking over the web for a solution the last 12 hours, but just don't seem to find the right thing. Can somebody help me? Regards, Nik --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" 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-web-toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
