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Eclipse RCP problems using buddyloading

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Bl4ckh4wk

Post subject: Eclipse RCP problems using buddyloading

Posted: Tue Jan 03, 2006 5:43 pm

Newbie

Joined: Tue Jan 03, 2006 5:09 pm
Posts: 4

Hibernate version: 3.1.0 (hibernate tools 3.1.0 beta2)

Full stack trace of any exception that occurs:

Code:

java.lang.ExceptionInInitializerError
   at metaInformationClient.Application.run(Application.java:20)
   at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
   at java.lang.reflect.Method.invoke(Unknown Source)
   at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
   at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
   at org.eclipse.core.launcher.Main.run(Main.java:973)
   at org.eclipse.core.launcher.Main.main(Main.java:948)
Caused by: org.hibernate.HibernateException: /hibernate.cfg.xml not found
   at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:147)
   at org.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java:1265)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:1287)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:1274)
   at conf.HibernateUtil.<clinit>(HibernateUtil.java:11)
   ... 12 more

It's not that I didn't look trough the available resources on this forum or on the wiki. My main guidelines have been: http://forum.hibernate.org/viewtopic.php?t=944666 and
http://www.hibernate.org/311.html

I first modified the MANIFEST.MF in C:\Program Files (x86)\eclipse\plugins\org.hibernate.eclipse_3.1.0.beta2\META-INF adding "Eclipse-BuddyPolicy: registered".

To my own MANIFEST.MF file I have added:

Code:

Eclipse-RegisterBuddy: org.hibernate.eclipse

But when trying to run I still get the above exception.
The hibernate.cfg.xml has been in /, /src, /bin, etc, always keep getting the same exception while it should just be in my /src dir according to the wikipage.

So far I've read topics all using a single plugin, does this also work for RCP applications? If so, what am I doing wrong here? Do I need to add the jar's to my own project?

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snpesnpe

Post subject:

Posted: Tue Jan 03, 2006 6:03 pm

Expert

Joined: Sat Jun 12, 2004 4:49 pm
Posts: 915

buddy loading work great with rcp application

you have to set

Eclipse-BuddyPolicy: registered

in manifest file - plugin with hibernate libraries (org.hibernate.eclipse)

and your

Eclipse-RegisterBuddy: org.hibernate.eclipse

in plugin where hibernate.cfg.xml (and other plugin with configuration or POJO classes)

regards

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Bl4ckh4wk

Post subject:

Posted: Wed Jan 04, 2006 12:01 pm

Newbie

Joined: Tue Jan 03, 2006 5:09 pm
Posts: 4

Thank you for the effort but apparently you did not read my opening post :)

You see, I added the buddy loading stuff, correctly! (no typo's, not messing up the policy/register options. That part is ok.

Yet I still get the top stacktrace.

I have a feeling it might be because of my HibernateUtil class?

I've tried loading it with
Class.forName("metaInformationClient.HibernateUtil");
combined with the HibernateUtil found here

Code:

   // Create the initial SessionFactory from the default configuration files
   static {
      ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
      try {
         Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
         
         configuration = new Configuration();
         sessionFactory = configuration.configure().buildSessionFactory();
         // We could also let Hibernate bind it to JNDI:
         // configuration.configure().buildSessionFactory()
      } catch (Throwable ex) {
         // We have to catch Throwable, otherwise we will miss
         // NoClassDefFoundError and other subclasses of Error
         log.error("Building SessionFactory failed.", ex);
         throw new ExceptionInInitializerError(ex);
      } finally {
         Thread.currentThread().setContextClassLoader(originalClassLoader);
      }
   }

The this was off course a problem so I changed it to:

Code:

   static {

      Configuration configuration = new Configuration();
      sessionFactory = configuration.configure().buildSessionFactory();

   }

and tried loading it by: Class.forname("metaInformationClient.HibernateUtil", true, this.getClass().getClassLoader()); for using it with the same classloader as my Application.java.

I'm doing the calls from my public Object run() routine because my application does not have a start routine, only a run.

So how can I now initialize hibernate in a way that it uses (finds) my hibernate.cfg.xml?

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snpesnpe

Post subject:

Posted: Wed Jan 04, 2006 1:45 pm

Expert

Joined: Sat Jun 12, 2004 4:49 pm
Posts: 915

Bl4ckh4wk,
do you have dependenices to org.hibernate.eclipse in your plugins ?

send us manifest.mf for both plugins

I have rcp application with hibernate core (hibernate libraries like org.hibernate.eclipse from hibernate tools;i don't use plugin from tools because i want control version hibernate) in one plugin and HibernateUtil in another (mapping plugin).It work perfect - i use spring , too and spring and buddy loader work

do you use eclipse >=3.1 ?

regards

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Bl4ckh4wk

Post subject:

Posted: Wed Jan 04, 2006 2:27 pm

Newbie

Joined: Tue Jan 03, 2006 5:09 pm
Posts: 4

Hi,

Yes, I'm using Eclipse 3.1.1, I should have pointed that out, sorry :)

Here is the manifest.mf file from my application:

Code:

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: MetaInformationClient Plug-in
Bundle-SymbolicName: MetaInformationClient; singleton:=true
Bundle-Version: 1.0.0
Bundle-Activator: metaInformationClient.MetaInformationClientPlugin
Bundle-Localization: plugin
Require-Bundle: org.eclipse.ui,
 org.eclipse.core.runtime,
 org.hibernate.eclipse
Eclipse-AutoStart: true
Eclipse-RegisterBuddy: org.hibernate.eclipse

and here is the manifest.mf file from org.hibernate.eclipse wich I modified:

Code:

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.5.0_04-b05 (Sun Microsystems Inc.)
Bundle-ManifestVersion: 2
Bundle-Name: Hibernate Core Plugin
Bundle-SymbolicName: org.hibernate.eclipse
Bundle-Version: 3.1.0.beta2
Bundle-ClassPath: org.hibernate.eclipse.jar,lib/tools/hibernateconsole
 .jar,lib/hibernate/asm.jar,lib/hibernate/asm-attrs.jar,lib/hibernate/
 c3p0-0.9.0.jar,lib/hibernate/commons-collections-2.1.1.jar,lib/hibern
 ate/commons-logging-1.0.4.jar,lib/hibernate/concurrent-1.3.2.jar,lib/
 hibernate/connector.jar,lib/hibernate/dom4j-1.6.1.jar,lib/hibernate/e
 hcache-1.1.jar,lib/hibernate/hibernate3.jar,lib/hibernate/jboss-cache
 .jar,lib/hibernate/jboss-common.jar,lib/hibernate/jboss-jmx.jar,lib/h
 ibernate/jboss-system.jar,lib/hibernate/jdbc2_0-stdext.jar,lib/hibern
 ate/jgroups-2.2.7.jar,lib/hibernate/jta.jar,lib/hibernate/jaas.jar,li
 b/hibernate/log4j-1.2.11.jar,lib/hibernate/oscache-2.1.jar,lib/hibern
 ate/proxool-0.8.3.jar,lib/hibernate/swarmcache-1.0rc2.jar,lib/tools/h
 ibernate-tools.jar,lib/tools/jtidy-r8-21122004.jar,lib/tools/l2fprod-
 common.jar,lib/tools/velocity-1.4.jar,lib/tools/velocity-tools-generi
 c-1.1.jar,lib/tools/bsh-2.0b1.jar,lib/bsh-core-2.0b4.jar,lib/annotati
 ons/ejb3-persistence.jar,lib/annotations/hibernate-annotations.jar,li
 b/annotations/lucene-1.4.3.jar,lib/hibernate/antlr-2.7.6rc1.jar,lib/h
 ibernate/cglib-2.1.3.jar
Bundle-Activator: org.hibernate.eclipse.HibernatePlugin
Bundle-Vendor: Hibernate Team
Bundle-Localization: plugin
Export-Package: EDU.oswego.cs.dl.util.concurrent,antlr,antlr.actions.c
 pp,antlr.actions.csharp,antlr.actions.java,antlr.actions.python,antlr
 .build,antlr.collections,antlr.collections.impl,antlr.debug,antlr.deb
...!lot's of packages go here!... org.w3c.tidy.ant
Require-Bundle: org.eclipse.core.runtime
Eclipse-AutoStart: true
Eclipse-BuddyPolicy: registered

I have zipped up the entire code, so you can grab that from here if you want to take a look at HibernateUtil.

Thank you.

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snpesnpe

Post subject:

Posted: Wed Jan 04, 2006 3:02 pm

Expert

Joined: Sat Jun 12, 2004 4:49 pm
Posts: 915

i can't try this plugin because i haven't mysql and mysql jdbc driver, but i think that your
problem is call HibernateUtil before creating workspace and buddy policy doesn't exists yet

remove this construction
Class.forName("metaInformationClient.HibernateUtil", true, this.getClass().getClassLoader());
from Application.java
and try build/open session with static methods in
MetaInformationClientPlugin.java

i do it like this :

Code:

public static Session getSession() {
      if (sessionFactory == null)
         buildHibernate();
      Session s = (Session) threadSession.get();
      if (s == null) {
         s = getSessionFactory().openSession();
         threadSession.set(s);
      }
      return s;
   }

this si code in plugin class - buildHibernate is similar static from HibernateUtil, but i build hibernate lazy (when i need session)
complete source for my MappingPlugin is
http://www.snpe.co.yu/MappingPlugin.java

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