ArgumentException: JDBC Driver or DataSource class - mysql

Question

I'm attempting create a simple web app with a MySQL backend. I'm able to deploy my .ear in Geronimo. However, when I submit my form to persist some stuff to the DB via OpenJPA I get the following error (below is my stacktrace):
Caused by: org.apache.openjpa.persistence.ArgumentException: A JDBC Driver or DataSource class name must be specified in the ConnectionDriverName property.
My Project is an Enterprise Application Project (AReyes) with a web module (AReyesAdminWeb) and an ejb module (AReyesEJB).
My persistence.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0">
<persistence-unit name="AReyesPersistUnit" transaction-type="JTA">
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<jta-data-source>AReyesMySql</jta-data-source>
<class>com.areyes.entity.Admin</class>
<properties>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/>
</properties>
</persistence-unit>
</persistence>
The file is located in AReyesEJB/ejbModule/META-INF
What I'm using
Geronimo 2.2.1 with Tomcat 6
MySQL 5.5.11
OpenJPA 1.2.2
Eclipse Indego Release
OS X 10.6.7
StackTrace
Caused by: org.apache.openejb.OpenEJBException: Error while creating bean com.areyes.session.AdminManager: Error invoking constructor: public com.areyes.session.AdminManager()
at org.apache.openejb.InjectionProcessor.construct(InjectionProcessor.java:120)
at org.apache.openejb.InjectionProcessor.createInstance(InjectionProcessor.java:83)
at org.apache.openejb.core.stateless.StatelessInstanceManager.ceateInstance(StatelessInstanceManager.java:204)
at org.apache.openejb.core.stateless.StatelessInstanceManager.getInstance(StatelessInstanceManager.java:165)
at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:217)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:77)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:282)
... 23 more
Caused by: org.apache.xbean.recipe.ConstructionException: Error invoking constructor: public com.areyes.session.AdminManager()
at org.apache.xbean.recipe.ReflectionUtil$ConstructorFactory.create(ReflectionUtil.java:962)
at org.apache.xbean.recipe.ObjectRecipe.internalCreate(ObjectRecipe.java:276)
at org.apache.xbean.recipe.AbstractRecipe.create(AbstractRecipe.java:96)
at org.apache.xbean.recipe.AbstractRecipe.create(AbstractRecipe.java:61)
at org.apache.openejb.InjectionProcessor.construct(InjectionProcessor.java:118)
... 30 more
Caused by: <openjpa-1.2.2-r422266:898935 fatal user error> org.apache.openjpa.persistence.ArgumentException: A JDBC Driver or DataSource class name must be specified in the ConnectionDriverName property.
at org.apache.openjpa.jdbc.schema.DataSourceFactory.newDataSource(DataSourceFactory.java:74)
at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.createConnectionFactory(JDBCConfigurationImpl.java:784)
at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:561)
at org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1344)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:505)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:430)
at org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:103)
at org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
at org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:863)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:854)
at org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:638)
at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:183)
at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
at com.areyes.session.AdminManager.<init>(AdminManager.java:22)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.xbean.recipe.ReflectionUtil$ConstructorFactory.create(ReflectionUtil.java:952)
... 34 more
com.areyes.session.AdminManager is a #Stateless bean that has been injected into a servlet in AReyesAdminWeb (with #EJB anno). Here's the constrcutor:
#Stateless
public class AdminManager implements AdminService {
private EntityManagerFactory fac;
private EntityManager em;
public AdminManager () {
fac = Persistence.createEntityManagerFactory("AReyesPersistUnit", System.getProperties());
em = fac.createEntityManager();
}
The behavior seem like my web app is unaware of my persistence.xml in my ejb app. I wonder if I bundled everything up correctly.
I added this to my application.xml:
<module>
<connector>tranql-connector-mysql-local-1.5.rar</connector>
</module>
Then I added this to my geronimo-application.xml:
<app:module>
<app:connector>tranql-connector-mysql-local-1.5.rar</app:connector>
<app:alt-dd>mysql-plan.xml</app:alt-dd>
</app:module>
In my EA Project (AReyes) I've added mysql-plan.xml in the same folder with my META-INF. Then I imported the tranql-connector-mysql-local-1.5.rar from my Geronimo folder.

Answer 1

It sounds like the web app cannot find persistence.xml on its class path. From reading this thread you could have the same problem. Try moving persistence.xml to the following location and see how you go...
WEB-INF/classes/META-INF/persistence.xml