Hi, I am trying to develop an app in Java on App engine. But, have not been able to make JDO work. It seems based on the exceptions. The JDO is not able to initialize PersistenceManagerFactory object. I have checked jdoconfig.xml file in src/META-INF and war/WEB-INF/classes/ META-INF, both have the same values as below. Please help. Below are the files data and the exception stack trace.
<?xml version="1.0" encoding="utf-8"?> <jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/ jdoconfig"> <persistence-manager-factory name="transactions-optional"> <property name="javax.jdo.PersistenceManagerFactoryClass" value="org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory"/ <property name="javax.jdo.option.ConnectionURL" value="appengine"/> <property name="javax.jdo.option.NontransactionalRead" value="true"/> <property name="javax.jdo.option.NontransactionalWrite" value="true"/> <property name="javax.jdo.option.RetainValues" value="true"/> <property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true"/> </persistence-manager-factory> </jdoconfig> ------------------------------------------------------------------------------------------------------------------------------------------ import javax.jdo.JDOHelper; import javax.jdo.PersistenceManagerFactory; public final class PMF { private static final PersistenceManagerFactory pmfInstance = JDOHelper.getPersistenceManagerFactory("transactions- optional"); private PMF() {} public static PersistenceManagerFactory get() { return pmfInstance; } } ------------------------------------------------------------------------------------------------------------------------------------------ javax.jdo.JDOUserException: You have either specified for this PMF to use a "persistence-unit" of "transactions-optional" (yet this doesnt exist!) or you called JDOHelper.getPersistenceManagerFactory with "transactions-optional" as the name of a properties file (and this doesnt exist in the CLASSPATH) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 856) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 1092) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 914) at com.cards.services.PMF.<clinit>(PMF.java:8) ... 44 more Caused by: javax.jdo.JDOUserException: You have either specified for this PMF to use a "persistence-unit" of "transactions-optional" (yet this doesnt exist!) or you called JDOHelper.getPersistenceManagerFactory with "transactions-optional" as the name of a properties file (and this doesnt exist in the CLASSPATH) at org.datanucleus.jdo.JDOPersistenceManagerFactory.initialiseProperties(JDOPersistenceManagerFactory.java: 377) at org.datanucleus.jdo.JDOPersistenceManagerFactory.<init>(JDOPersistenceManagerFactory.java: 260) at org.datanucleus.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java: 173) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25) at java.lang.reflect.Method.invoke(Method.java:592) at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java: 100) at javax.jdo.JDOHelper$16.run(JDOHelper.java:1956) at java.security.AccessController.doPrivileged(Native Method) at javax.jdo.JDOHelper.invoke(JDOHelper.java:1951) at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java: 1159) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 839) ... 47 more Feb 8, 2010 10:29:16 AM com.google.apphosting.utils.jetty.JettyLogger warn WARNING: Nested in java.lang.ExceptionInInitializerError: javax.jdo.JDOFatalUserException: A property named javax.jdo.PersistenceManagerFactoryClass must be specified, or a jar file with a META-INF/services/javax.jdo.PersistenceManagerFactory entry must be in the classpath, or a property named javax.jdo.option.PersistenceUnitName must be specified. at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 856) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 1092) at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java: 914) at com.cards.services.PMF.<clinit>(PMF.java:8) at com.cards.services.UserService$Impl.create(UserService.java:42) at com.cards.spring.controllers.UserController.getUser(UserController.java: 54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25) at java.lang.reflect.Method.invoke(Method.java:592) -- You received this message because you are subscribed to the Google Groups "Google App Engine" 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?hl=en.
