Unable to insert record

[lo...@i-stt.com]

Hi,
I encountered this error whenever I try to insert a record into a table in 
Oracle. There are however no problem with the rdf schema/table (the tdk 
tutorial)  that was built together with my project. Please help. Thanks in 
advance.


The log shows the following:

[Thu Mar 28 11:30:38 SGT 2002] -- ERROR -- Turbine.handleException: null
[Thu Mar 28 11:30:38 SGT 2002] -- ERROR -- 
        Exception:  java.lang.reflect.InvocationTargetException
        Stack Trace follows:
        java.lang.reflect.InvocationTargetException: 
java.lang.NullPointerException
        at org.apache.turbine.om.peer.BasePeer.doInsert(BasePeer.java:737)
        at 
org.mycompany.newapp.om.BaseTOssWebappsPeer.doInsert(BaseTOssWebappsPeer.java:131)
        at 
org.mycompany.newapp.om.BaseTOssWebappsPeer.doInsert(BaseTOssWebappsPeer.java:351)
        at 
org.mycompany.newapp.om.BaseTOssWebapps.save(BaseTOssWebapps.java:234)
        at 
org.mycompany.newapp.om.BaseTOssWebapps.save(BaseTOssWebapps.java:198)
        at 
org.mycompany.newapp.om.BaseTOssWebapps.save(BaseTOssWebapps.java:184)
        at org.mycompany.newapp.modules.actions.SQL.doInsert(SQL.java:102)
        at java.lang.reflect.Method.invoke(Native Method)
        at 
org.apache.turbine.util.velocity.VelocityActionEvent.executeEvents(VelocityActionEvent.java:166)
        at 
org.apache.turbine.util.velocity.VelocityActionEvent.perform(VelocityActionEvent.java:114)
        at 
org.apache.turbine.modules.actions.VelocityAction.perform(VelocityAction.java:114)
        at 
org.apache.turbine.modules.actions.VelocitySecureAction.perform(VelocitySecureAction.java:100)
        at 
org.apache.turbine.modules.ActionLoader.exec(ActionLoader.java:122)
        at 
org.apache.turbine.modules.pages.DefaultPage.doBuild(DefaultPage.java:143)
        at org.apache.turbine.modules.Page.build(Page.java:90)
        at org.apache.turbine.modules.PageLoader.exec(PageLoader.java:123)
        at org.apache.turbine.Turbine.doGet(Turbine.java:447)
        at org.apache.turbine.Turbine.doPost(Turbine.java:537)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
        at org.apache.tomcat.core.Handler.service(Handler.java:287)
        at 
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at 
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
        at 
org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
        at 
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
        at 
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at 
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
        at java.lang.Thread.run(Thread.java:484)


Guan Wee