Eclipse RCP Application, Plugins and Classloader

Question

Hi there,
I'm currently evaluatin KODO within an eclipse RCP application.
Anything went fine until I started to modularize my classes into
different plugins.
Background:
===========
The application consists of a "main" plugin, a "basic persistence layer"
plugin and an "additional persitent classes" plugin.
"basic" contains anything for kodo connections and persistence managers
and some general persitent classes
"additional" introduces some applicationspecific persitent classes.
the persistent classes of any plugin are registered using
"kodo.PersistentClasses".
I use "kodo.ClassResolver" to point to a class
"MultiPluginClassResolver" which inherits from
"MultiLoaderClassResolver" and has the classloader of each plugin
registered.
main depends on "basic" and "additional".
Problem:
========
Whenever I instaniate a PersistenceManager from within plugin "basic"
kodo throws a ClassNotFoundException as shown below.
de.bioassay.pla.assay.Assay is a class from plugin "additional"
What am I missing?
297 WARN [main] kodo.Runtime - java.lang.ClassNotFoundException:
de.bioassay.pla.assay.Assay
java.lang.ClassNotFoundException: de.bioassay.pla.assay.Assay
     at serp.util.MultiClassLoader.findClass(MultiClassLoader.java:230)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:242)
     at
kodo.runtime.PersistenceManagerFactoryImpl.loadPersistentClasses(PersistenceManagerFactoryImpl.java:208)
     at
kodo.runtime.PersistenceManagerFactoryImpl.getPersistenceManager(PersistenceManagerFactoryImpl.java:151)
     at
kodo.runtime.PersistenceManagerFactoryImpl.getPersistenceManager(PersistenceManagerFactoryImpl.java:104)
     at
kodo.runtime.PersistenceManagerFactoryImpl.getPersistenceManager(PersistenceManagerFactoryImpl.java:97)
regards
Markus

Answer 1

Hi again.
could solve the problem on my own:
the "additional" plugin didn't have the jdo libraries within the
runtime classpath. The solution was to export the jdo libraries from
within the "base" plugin.
regards
Markus
M. Stier schrieb:
Problem:
========
Whenever I instaniate a PersistenceManager from within plugin "basic"
kodo throws a ClassNotFoundException as shown below.
de.bioassay.pla.assay.Assay is a class from plugin "additional"
What am I missing?