Problems with Scripted Datasource Eclipse Preview

Smoeker

hi,

i am trying to design a Birt Report using Scripted Datasources and run into problems on preview within eclipse.

my report runs fine (and shows preivew) on the first time i execute the preview after restart of eclipse - every following attempt i receive errors.

-> my constellation :report + scripted datasource are within same project.
-> the DataSource uses Businesscunctions from another JAVA Project that is using hibernate to retrieve data from a database
-> i added the dependent hibernate project and all requiered jars to the classpath of the reporting project

result as described : first preview works, all following i receive exception :

(shortened version : )

at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)
Caused by: org.eclipse.birt.data.engine.core.DataException: A BIRT exception occurred: Error evaluating Javascript expression. Script engine error: Wrapped java.lang.RuntimeException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader (#3)
Script source: , line: 0, text:
__bm_OPEN(). See next exception for more information.
Error evaluating Javascript expression. Script engine error: Wrapped java.lang.RuntimeException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader (#3)
Script source: , line: 0, text:
__bm_OPEN()


Seems, as if hibernate classes arent visible, so i think it is a classpath problem, but why does it work the first time?

i already have read some threads using scriptlib directory for dependent libraries - how would that work for me (concering dependent project and hibernate.properties)?

thnx in advance for any help

Smoeker