forums.smartfoxserver.com

Hi

I'm trying to get hibernate + jpa to work with smartfox.
However I'm running into a problem because I allways get the exception pasted below.

I guess the exception gets thrown because hibernate is unable to find the classes.
I have the classes in the javaExtensions folder and also tried to copy them into the Server folder since thats where the persistence.xml needed to be.
But nothing helped so far.
I saw that several people are using smartfox + hibernate so I must be missing something obvious here.

Thx in advance



INFO | jvm 1 | 2010/10/05 14:08:17 | 14:08:17.484 - [ WARNING ] > Unexpected Exception: javax.persistence.PersistenceException: [PersistenceUnit: examplePersistenceUnit] class or package not found
INFO | jvm 1 | 2010/10/05 14:08:17 | 05.10.2010 14:08:17 it.gotoandplay.smartfoxserver.controllers.SystemHandler processEvent
INFO | jvm 1 | 2010/10/05 14:08:17 | WARNUNG: Unexpected Exception: javax.persistence.PersistenceException: [PersistenceUnit: examplePersistenceUnit] class or package not found
INFO | jvm 1 | 2010/10/05 14:08:17 | javax.persistence.PersistenceException: [PersistenceUnit: examplePersistenceUnit] class or package not found
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1093)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.addClassesToSessionFactory(Ejb3Configuration.java:871)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:758)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:191)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:253)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:125)
INFO | jvm 1 | 2010/10/05 14:08:17 | at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52)
INFO | jvm 1 | 2010/10/05 14:08:17 | at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
INFO | jvm 1 | 2010/10/05 14:08:17 | at globals.Database.getEntityManager(Database.java:15)
INFO | jvm 1 | 2010/10/05 14:08:17 | at secureLogin.SecureLogin.handleInternalEvent(SecureLogin.java:144)
INFO | jvm 1 | 2010/10/05 14:08:17 | at it.gotoandplay.smartfoxserver.controllers.MessageHandler.dispatchEvent(MessageHandler.java:147)
INFO | jvm 1 | 2010/10/05 14:08:17 | at it.gotoandplay.smartfoxserver.controllers.SystemHandler.handleLoginRequest(SystemHandler.java:482)
INFO | jvm 1 | 2010/10/05 14:08:17 | at it.gotoandplay.smartfoxserver.controllers.SystemHandler.processEvent(SystemHandler.java:221)
INFO | jvm 1 | 2010/10/05 14:08:17 | at it.gotoandplay.smartfoxserver.controllers.SystemHandler.run(SystemHandler.java:146)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.Thread.run(Thread.java:619)
INFO | jvm 1 | 2010/10/05 14:08:17 | Caused by: java.lang.ClassNotFoundException: javaExtensions.Persistance.AvatarData
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.security.AccessController.doPrivileged(Native Method)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
INFO | jvm 1 | 2010/10/05 14:08:17 | at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:229)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.Class.forName0(Native Method)
INFO | jvm 1 | 2010/10/05 14:08:17 | at java.lang.Class.forName(Class.java:247)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:135)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.classForName(Ejb3Configuration.java:1009)
INFO | jvm 1 | 2010/10/05 14:08:17 | at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1081)
INFO | jvm 1 | 2010/10/05 14:08:17 | ... 14 more

What are the full name of the files being stored in your javaExtension folder and the settings used to call the classes?

BigFIsh wrote:What are the full name of the files being stored in your javaExtension folder and the settings used to call the classes?

Sorry, I'm not really sure what you want to know.
But the AvatarData.class file is located under .../javaExtensions/Persistance/
And the package name is also Persistance.

And what do you mean by settings?

My persistence.cfg for hibernate looks like this

<persistence>
<persistence-unit name="examplePersistenceUnit"
transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.format_sql" value="false" />

<property name="hibernate.connection.driver_class"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url"
value="jdbc:mysql://localhost:3306/test" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="xxx" />
<property name="hibernate.dialect"
value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create" />
</properties>
</persistence-unit>
</persistence>

I tried to run the exact same code in a standalone java application and everything worked fine, so I dont really know why the files can't be found when running things as a smartfox extension.

have you changes your wrapper.conf / start.bat with the new needed classes?

the first step ist the sticky in the top of this forum how to get sfs work together with hibernate, have you read it?

after all it is not much magic bringing this to work, so try this two things

Got it working now.
I pretty much did everything correctly, except that I had an ant script to copy the files to the javaExtensions folder AND the server folder.
This was causing issues since the classes were in the classpath twice.
Took me almost a week to figure out that stupid mistake :/