JDev 11.1.1.2.0 - Error while providing Error Handler Class in Databindings

Question

I get this exception as soon as I provide a reference to ErrorHandlerClass in DataBindings.cpx
Error 500--Internal Server Error
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.InstantiationException, msg=empexceptions.model.EmpDCErrorHandler
     at oracle.jbo.common.JBOClass.newInstance(JBOClass.java:253)
     at oracle.jbo.uicli.mom.JUApplicationDefImpl.initializeBindingContext(JUApplicationDefImpl.java:1242)
     at oracle.jbo.uicli.mom.JUApplicationDefImpl.populateContext(JUApplicationDefImpl.java:1215)
     at oracle.jbo.uicli.mom.JUMetaObjectManager.loadCpx(JUMetaObjectManager.java:713)
     at oracle.adf.model.BindingRequestHandler.initializeBindingContext(BindingRequestHandler.java:399)
     at oracle.adf.model.BindingRequestHandler.beginRequest(BindingRequestHandler.java:182)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:189)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:97)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:94)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:138)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:70)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:326)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3592)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: java.lang.InstantiationException: empexceptions.model.EmpDCErrorHandler
     at java.lang.Class.newInstance0(Class.java:340)
     at java.lang.Class.newInstance(Class.java:308)
     at oracle.jbo.common.JBOClass.newInstance(JBOClass.java:245)
     ... 34 more
DataBindings.cpx looks like this
<?xml version="1.0" encoding="UTF-8" ?>
<Application xmlns="http://xmlns.oracle.com/adfm/application"
             version="11.1.1.55.36" id="DataBindings" SeparateXMLFiles="false"
             Package="empexceptions.view" ClientType="Generic"
            ErrorHandlerClass="empexceptions.model.EmpDCErrorHandler">and my error handler class looks like this
package empexceptions.model;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCErrorHandlerImpl;
public class EmpDCErrorHandler extends DCErrorHandlerImpl {
    public EmpDCErrorHandler(boolean b) {
        super(false);
    @Override
    public void reportException(DCBindingContainer dCBindingContainer,
                                Exception exception) {
        super.reportException(dCBindingContainer, exception);
}Am I doing anything wrong here?

Answer 1

hi Harry
See "28.10 Customizing Error Handling"
at http://download.oracle.com/docs/cd/E14571_01/web.1111/b31974/web_adv.htm#ADFFD1398
that says "... The exception error handler must have a default constructor, as shown in Example 28-27. ...".
success
Jan Vervecken