Java.lang.IllegalArgumentException: org.apache.fop.svg.SVGElementMapping

Question

Hi,
I have an FOP application which presents the data retrieved from database in a PDF format.
Now when Iam trying to deploy the FOP application to OC4J and I get the following error.
java.lang.IllegalArgumentException: org.apache.fop.svg.SVGElementMapping is not an ElementMapping
     at org.apache.fop.apps.Driver.addElementMapping(Driver.java:464)
     at org.apache.fop.apps.Driver.setupDefaultMappings(Driver.java:314)
     at org.apache.fop.apps.Driver.<init>(Driver.java:222)
     at org.appfuse.fop.FOPHelper.createPDF(FOPHelper.java:48)
     at FOPServlet.execute(FOPServlet.java:168)
     at FOPServlet.doPost(FOPServlet.java:109)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:208)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:125)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
I believe its the problem with the class loaders.
I even configured my orion-web.xml to load the local classes and following is the conf file:
<orion-web-app
     deployment-version="9.0.4.0.0"
     temporary-directory="./temp"
     internationalize-resources="false"
     default-mime-type="application/octet-stream"
     servlet-webdir="/servlet/"
>
     <web-app-class-loader search-local-classes-first="true" include-war-manifest-class-path="false" />
</orion-web-app>
I have loaded the most stable jar files(fop-0.20.5) required for the generation of PDF.
The same application runs well in JDeveloper(10.1.2.0.0)
Could somebody help me out with this.
Its very urgent.
Need to be able to deploy this by evening.
Thanks
Sridhar
Message was edited by:
Sridhar

Answer 1

This means the code loading the element mappings does not recognize
the SVGElementMapping as an ElementMapping, as it expects. The most
likely reason is that they are loaded from different class loaders -That was the reason of my simple suggestion above.
There are many ways that you can try now.
One way is to put all libraries in your war into ORACLE_HOME/j2ee/home/applib. Also remove the following line
<web-app-class-loader search-local-classes-first="true" include-war-manifest-class-path="false" />
since this search-local-classes-first is problematic sometimes.
It might be nice if you can verify that the classloader that loads SVGElementMapping is different from the one that loads Elementmapping at that point of code.
Now Could somebody help me out as this is the problem of OC4J .Hmm, I would not say "problem of OC4J". A usage error or a false incompatibility at worst. "False" because there should be many normal and standard ways to make it work.