persistence@glassfish.java.net

Re: J2SE example with toplink-essentials

From: Marina Vatkina <Marina.Vatkina_at_Sun.COM>
Date: Sat, 01 Apr 2006 11:19:06 -0800

Jakob,

Please use the latest GlassFish build.

thanks,
-marina

Jakob Braeuchi wrote:
> hi,
>
> i tried to run the example shown on this page:
> https://glassfish.dev.java.net/javaee5/persistence/entity-persistence-support.html#Java_SE
>
>
> i had some problems with an NPE when i create the entityManager withoud
> an additional map:
>
> Persistence.createEntityManagerFactory("pu1");
>
> Exception in thread "main" java.lang.NullPointerException
> at
> oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.callPredeploy(JavaSECMPInitializer.java:140)
>
> at
> oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initPersistenceUnits(JavaSECMPInitializer.java:282)
>
> at
> oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initialize(JavaSECMPInitializer.java:301)
>
> at
> oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initializeFromMain(JavaSECMPInitializer.java:338)
>
> at
> oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.getJavaSECMPInitializer(JavaSECMPInitializer.java:78)
>
> at
> oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.getServerSession(EntityManagerFactoryProvider.java:251)
>
> at
> oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:96)
>
> at
> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:59)
>
> at
> javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)
>
> at client.Client.main(Client.java:48)
>
>
> Persistence.createEntityManagerFactory("pu1", new HashMap()); works.
>
> another problem is the the persistence.xml shown on the same page.
>
> the properties prefixed with toplink did not work for me:
>
> <property name="toplink.jdbc.driver" value="<database driver>"/>
> <property name="toplink.jdbc.url" value="<database url>"/>
> <property name="toplink.jdbc.user" value="<user>"/>
> <property name="toplink.jdbc.password" value="<password>"/>
>
> whith these properties (without toplink prefix) the example ran fine:
>
> <property name="toplink.platform.class.name"
> value="oracle.toplink.essentials.platform.database.MySQL4Platform"/>
>
> <property name="jdbc.driver" value="com.mysql.jdbc.Driver"/>
> <property name="jdbc.connection.string"
> value="jdbc:mysql://localhost:3306/mydb"/>
> <property name="jdbc.user" value="myuser"/>
> <property name="jdbc.password" value="mypwd"/>
>
>
> jakob braeuchi