Apache FOP getClassLoader problem

Question

I have loaded Apache FOP 1.1 into an 11g database, and a driver class to retrieve XML/XSLT and save PDF as CLOBs. When I try to execute this in the DB, I get
ORA-29532: Java call terminated by uncaught Java exception: javax.xml.transform.TransformerException: java.security.AccessControlException: the Permission (java.lang.RuntimePermission getClassLoader) has not been granted to ProtectionDomain  (null <no signer certificates>)
com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl$TransletClassLoader@98644313
<no principals>
java.security.Permissions@b0558743 (
(java.lang.RuntimePermission modifyThreadGroup)
(java.lang.RuntimePermission createSecurityManager)
(java.lang.RuntimePermission modifyThread)
(java.lang.RuntimePermission preferences)
(java.lang.RuntimePermission exitVM)
(java.util.PropertyPermission user.language write)
(java.util.PropertyPermission * read)
(oracle.aurora.security.JServerPermission LoadClassInPackage.*)
It looks like the SecurityManager is only looking at PUBLIC permissions, even though the FOP classes were loaded into a schema with 'SYS:java.lang.RuntimePermission', 'getClassLoader', ''.
Any ideas on how to get around this?
Thanks!

Answer 1

Dear Brian,
It looks to me like org.apache.fop.apps.Driver might be doing a
Class.forName() for the Loggable class. If Class.forName() does not pass a
specific classloader, the system classpath loader is used; which is why it
works when you put the classes on the system classpath.
Best regards,
Timothy Potter
Senior Software Engineer
eCommerce Server Division
BEA Systems, Inc.
"Brian Dowd" <[email protected]> wrote in message
news:3c8c9ba0$[email protected]..
>
HI,
I am deploying a big EAR in WL 6.1 on solaris and I am bundling FOP1.20.3
within it, I am
also including avalon 4.0 and logkit 1.0 jars within it as they are neededby
fop.jar. Whenever I
try to construct a "Driver()" class I get a NoClassDefFoundError on theorg.apache.framework.logger.Loggable
interface that it needs. The strange thing is that when I do thefollowing :
>
try {
ClassLoader cl = this.getClass().getClassLoader();
cl.loadClass("org.apache.avalon.framework.logger.Loggable"); //.........this
works OK
// the following .... fails with NoClassDefFoundError on Loggable
org.apache.fop.apps.Driver d = new org.apache.fop.apps.Driver();
} catch (Throwable t) {
cat.error("failed:", t);
It DOES work when I put the necessary jars on the server startup classpath,
however it would obviously be
better to be able to bundle the 3rd party jars within my EAR ....... Iknow this
seems like it would be a general
weblogic classloader question - but I have had no problems with any other3rd
party jars that are similar to
this one.
Has anyone else had these kinds of problems ?
Cheers,
Brian.