[Jython-users] CLASSPATH problem under Tomcat

[Jaroslav G. <j_g...@ya...>]

Hello all,
I have the following problem with classpaths under Tomcat:

Short intro:
all JAR files located in $TOMCAT_HOME/lib are added
to the Java CLASSPATH and are visible to Jython.
NOTE: Their classes are loaded by the system classloader.

All JAR files located in an application specific lib
directory + application classes directory are visible to 
a given application.
Application specific classes located in:
$TOMCAT_HOME/webapps/myapp/WEB-INF/classes
Application spec. libraries in:
$TOMCAT_HOME/webapps/myapp/WEB-INF/lib
NOTE: application specific classes are loader using
org.apache.tomcat.loader.AdaptiveClassLoader12 (!)

There is only oneway visibility: application classes can
refer to classes loaded by the system classloader
but NOT vice versa.

I have my runtime library mylib.jar located in
the application lib directory togehter with the jython.jar
$TOMCAT_HOME/webapps/myapp/WEB-INF/lib/mylib.jar
$TOMCAT_HOME/webapps/myapp/WEB-INF/lib/jython.jar

THE PROBLEM:
jython does not see the classes from mylib.jar,
it only creates cache for the packages found in 
the standard Java classpath. (meaning $TOMCAT_HOME/lib + JRE/lib + ...)

How to turn jython to inlcude mylib.jar into package
cache and make mylib.jar classes accessible?

NOTE: I can not move mylib.jar to $TOMCAT_HOME/lib
becaus mylib.jar requires access to application
specific classses.

Thans for any hint
Gergic





=====
Jaroslav Gergic (Gergi)
mailto:j_g...@ya...
http://nenya.ms.mff.cuni.cz/~gergic/

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