Rony G. Flatscher wrote:
Hi there,
running a macro which gets dispatched as a macro via the OOo 2.4.1 Java
bridge (the Java scripting framework of OOo) will be aborted, if the
Java support (Apache BSF, cf. <http://jakarta.apache.org/bsf>) creates
dynamically an event adapter. Running the same program via URE succeeds!
The Apache BSF employs its own class loader (extending
java.lang.ClassLoader) for caching the dynamically created event adapter
classes (done in
org.apache.bsf.util.event.generator.AdapterClassLoader). Unfortunately,
when dispatched by OOo 2.4.1 as a macro invoking
ClassLoader.defineClass() causes an (uncatchable!) abend. (Running the
same code via URE works as expected.)
What causes this surprising behaviour, and even more important, how can
one come by it! (Support for dynamic languages is dependent on being
able to create Java classes on the fly from time to time.)
The likely cause is some code that is loaded by a parent classloader
trying to find the class in the generator's classloader.
The usual solution is to use the thread context classloader.
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Thread.html#setContextClassLoader(java.lang.ClassLoader)
http://www.mail-archive.com/[email protected]/msg06747.html
You should be very careful to do any changing of the contextClassLoader
in a try-finally block so that you don't expose the OOo code that calls
your to a strange classloader.
---rony
P.S.: Ad Beta 3.0, Dev300m21: currently I am not able to add the
scripting package (same package can be added to 2.4). Were there any
changes to the OOo scripting framework for OOo 3.0 which one needs to
take into account? If so, where would that be documented?
I've successfully run GroovyForOpenOffice and IFCX Wings on OOo 3.0 Beta
m20 without changes from those needed for OOo 2.3 (which did break
extensions that access the Scripting Framework Java API).
I recently posted to an old thread of yours on that issue:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg00794.html
The only significant problem I'm having with OOo 3.0 is on PPC OS X
where anything with Swing hangs the whole application.
Jim
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