Class casting problems in JSP's

Folks,
          Several people, including myself, have written about the problems they
          ran into when trying to cast a class in JSP's. The following link might
          provide the answer:
          http://www.weblogic.com/docs51/classdocs/API_jsp.html#sessions
          I believe this is a major limitation Weblogic put on web app
          development, and hope BEA would eventually find a way to allow non-user
          defined types being stored in servlet sessions.
          Jeff

Similar Messages

Class Cast Exception in JSP of the component

Hi,
I am trying to call a web service from the JSP of the component.I have written the java code as a scriplets in the JSP. The problem i am facing is Class Cast Exception. The code is as follows
String strKey = "wsclients/proxies/sap.com/CCMSContentBroker/com.sap.ccmscontentbroker.CCMSContentProxy";
java.lang.Object obj ;
obj = context.lookup(strKey);
str1 = obj.getClass().getName();
ContentBroker objCB= null;
objCB = (ContentBroker)obj; // getting error here
ContentBroker is an web service interface. The same code is working if i write it in the component but not in the scriplet of the JSP.
Can't we do the type cast in the JSP ?
Cant we call the web services in the JSP?
How to eliminate this Class cast Exception in my code?
Thanks and Regards,
Saravanan

Hi Harini,
Thanks for your reply. I have checked all the import statements in the JSP.The problem is in the Type casting of object <b>obj</b> to ContentBroker variable <b>objCB</b>.
Are u saying typr casting is not possible in JSP or organising imports in the JSP.
These are my imports statements in the JSP
<%@ page import = "java.util.ResourceBundle" %>
<%@ page import = "com.sapportals.htmlb.*" %>
<%@ page import = "com.intel.ccmt.ccmscontentbroker.* "%>
<%@ page import = "com.intel.ccmt.ccmscontentbroker.types.* "%>
<%@ page import = "com.sapportals.portal.prt.contentconversion.XSLConverter" %>
<%@ page import = "com.sapportals.portal.prt.component.IPortalComponentRequest" %>
<%@ page import="java.io.File" %>
<%@ page import="javax.naming.Context" %>
<%@ page import="javax.naming.InitialContext" %>
<%@ page import="javax.naming.NamingException" %>
<%@ page import="java.util.StringTokenizer"%>
Can u help me on rectifying this class cast Exception ?
Thanks and Regards,
Saravanan

Class Cast exception in JSP

Hi All,
Softwares used : UI--> JSP/Flex Grid/Dojo framwork
Spring MVC
Back end : EJB 3.0
application Server : Jboss 4.2.2
i have one Ajax call witch will update my flex grid after getting the data from Backend.
i am able to get responce object but i am getting the class cast exception in the jsp.
This ajax call used for upload the file.i have filter witch contains the wrap the request like
(HttpServletRequest) Proxy.newProxyInstance(
                    (javax.servlet.http.HttpServletRequest.class).getClassLoader(),
                    getInterfacesForObject(request), new HttpServletRequestProxy(
                              request, entries));
exception given below
19:54:04,372 ERROR [[ifx]] Servlet.service() for servlet ifx threw exception
java.lang.ClassCastException: $Proxy333
     at org.apache.catalina.core.ApplicationDispatcher.unwrapRequest(ApplicationDispatcher.java:776)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
     at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:240)
     at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:258)
     at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1174)
     at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:901)
     at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
     at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
Can you help me out for resolve this issue.
Regards,
Ritesh Kumar K.

riteshkumar wrote:
but we are using copying and pasting the application related lib's in the jboss\lib folder along with default jboss lib'sI am not sure if I understand you.
any way i tried but it's not resolving my problem.No other causes comes to mind. Sorry, can't help you further. Good luck with solving.

Class cast exception in jsp plz help

i have written a jsp where i displayed a text box with value given by user inside it
when the user enters some other value in text box and clicks on update button then i forwarded reqeust to servlet which will some data base work
servlet will forward again to the same jsp with the new value in text box.
but i am getting CLASS CAST EXCEPTION when servlet is forwarding reqeust to same JSP
help me what to do ........
thanking you in advance ..cheers

display cart.jsp file:
<%@ page import="java.util.*,org.*" %>
<html>
<body>
<%
Vector cartupdate = (Vector)session.getAttribute("cartlist");
for (int i = 0; i < cartupdate.size(); i++) {
CartListBean clb = (CartListBean)cartupdate.elementAt(i);
%>
<form name="itemslist<%=i%>" action="updateCart" method="post">
<input type="hidden" name="itemcode" value="<%=clb.getItemCode()%>">
     <input type="hidden" name="itemname" value="<%= clb.getItemName()%>">
<input type="hidden" name="price" value="<%= clb.getPrice()%>">
<%= clb.getItemName() %>
<input type="text" name="qty" value="<%=clb.getQuantity()%>">
<input type="submit" name="<%=clb.getItemCode()%>" value="update">
</form>
<br>
<%
%>
<form name="tobuy" action="buysrv" method="post">
<input type="submit" name="buy" value="BUY">
</form>
</body>
</html>
updatecart servlet code:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import org.*;
import java.sql.*;
import java.util.*;
public class UpdateCart extends HttpServlet
public void service(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
HttpSession session=request.getSession(false);
Vector cartupdate = (Vector)session.getAttribute("cartlist");
for (int i = 0; i < cartupdate.size(); i++) {
org.CartListBean cart = (org.CartListBean)cartupdate.elementAt(i);
if((cart.getItemCode()).equals(request.getParameter("itemcode")))
org.CartListBean clb=new org.CartListBean();
clb.setItemCode(request.getParameter("itemcode"));
     clb.setQuantity(request.getParameter("qty"));
     clb.setItemName(request.getParameter("itemname"));
clb.setPrice(request.getParameter("price"));
cartupdate.setElementAt(clb,i);
session.setAttribute("cartlist",cart);
ServletContext application=getServletContext();
System.out.println("got finished");
          RequestDispatcher rd=application.getRequestDispatcher("/displaycart.jsp");
               rd.forward(request,response);
Message was edited by:
143java

Class Casting problem

hi,
i�ve loaded a class at runtime and to parse it to another type, also loaded at runtime, but an error occures!
in this code i dont write the try�s and catches, they doesn�t matter in this problem
Class prototype; //source class
Class parser;    //target class
Class parsed;    //parsed class (source -> target / prototype -> parser)
prototype = Class.forName("Prototype");
parser    = Class.forName("Parser");
parsed    = (parser) prototype; //Compiler: "Class parser not found"what does it mean?
can somebody help me?
thx anyway
cu Errraddicator

parser    = Class.forName("Parser");
parsed    = (parser) prototype; //Compiler: "Class1st. "Parser" or "parser" ... what's the name of your class?
2nd. all your variables are of type Class. why would you want something of type Class cast into type Parser and then assign it back to a variable of class parsed?
try something like:
Class parserClass = Class.forName("Parser");
Parser parser = (Parser) parserClass.newInstance();of course this is not really THE way to construct an object if you know about the Class type beforehand....
ulrich

Class casting problem when using two class loaders

Hi, I have a problem with class casting using two different ClassLoader...
I created an instance of Test class, which is a subclass of AbstractTest and stored it for later use to ArrayList<AsbtractTest>. The instance was created with a custom class loader which extends URLClassLoader. Later when I got the stored instance from the ArrayList<AbstractTest> in default ClassLoader context and cast it to Test, it failed saying "java.lang.ClassCastException: com.test.Test cannot be cast to com.test.Test".
Does anybody have an idea why this happens?

Yes - a class is identified by it's package, it's name and it's class loader so the same class code loaded with two different class loaders are two different classes.
An approach to dealing with your problem is to have the class implement an interface that is loaded by the parent class (assuming, of course, that the two class loaders have the same parent) then you can cast to the interface.

Class Cast problem in BiBeans 905

I am now using BiBeans 905 beta. These days when I was developing a jsp page, a class cast error comes to me.
first I define the following Crosstab:
<orabi:Presentation location="UserLeftCrosstab"
id="biuntitled1_pres1"/>
and then, I wrote such code:
ThinGridView crosstab = (ThinGridView)biuntitled1_pres1;
when I compiled this page, the error occurs:
Error(26,41): cannot cast oracle.dss.thin.beans.dataView.Presentation to oracle.dss.thin.beans.gridView.ThinGridView
but I believe such kind of code can run in Bibeans 904

Things have changed in that the MVC implementation has been expanded. This is the proper call....
ThinCrosstab crosstab = (ThinCrosstab)presentation1.getView();

Parameter class casting problem

The question is: how to get the right method based on the type of the parameter passed?
Here is the code:
public class Test {
public static void main(String[] args) {
    Integer l = 57; // automatic boxing
    Object o = 43; // automatic boxing and widening casting (?)
    print( l ); // OK: calls Integer
    print( o ); // calls Object: not what I want, but could be
    print( (Integer)o ); // OK: calls Integer
    print( Integer.class.cast(o) ); // OK: calls Integer
    print( o.getClass().cast(o) ); // NOT OK: dinamic casting does't work?
static void print( Integer l ) {
    System.out.println("Integer: " + l.toString());
static void print( Object o ) {
    System.out.println("Object: " + o.toString() + " (" + o.getClass().toString() + ")");
}

Method overloads are resolved at compile time; meaning only the compile time type of the expression used as parameter is taken into account.
Class<T>.cast(Object)returns T.
Class<Integer>.cast returns Integer, so the first overload is chosen.
Class<Object>.cast returns Object, so here the second overload is chosen.

Class cast problem !!!

I am getting a class cast exception here
DecodeArray decode = ((SmppDeliverRequest)obj).getDecodeArray();
getDecodeArray() returns an object of type DecodeArray ..then why is not able to cast it I have no idea ...
any guesses ??

Hi Matt,
Thanks for your help !!
here is the output of the code. please check it and let me know your comments !!!
obj is of type com.logica.omg.ext.cingular.submit.DecodeArray
obj is an instance of SmppDeliverRequest
java.lang.ClassCastException
at com.logica.omg.cdrnode.logging.property.contexts.smpp.SmppDeliverRequestPropertyContext$SourceChargedProperty.access(SmppDeliverRequestPropertyContext.java:71)
at com.logica.omg.cdrnode.logging.property.Property.get(Property.java:52)
at com.logica.omg.cdrnode.logging.property.PropertyContextTest.assertProperty(PropertyContextTest.java:104)
at com.logica.omg.cdrnode.logging.property.PropertyContextTest.assertProperty(PropertyContextTest.java:67)
at com.logica.omg.cdrnode.logging.property.contexts.smpp.SmppDeliverRequestPropertyContextTest.testSourceChargedProperty(SmppDeliverRequestPropertyContextTest.java:136)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:166)
at junit.framework.TestCase.runBare(TestCase.java:140)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:131)
at junit.framework.TestSuite.runTest(TestSuite.java:173)
at junit.framework.TestSuite.run(TestSuite.java:168)
at junit.framework.TestSuite.runTest(TestSuite.java:173)
at junit.framework.TestSuite.run(TestSuite.java:168)
at junit.swingui.TestRunner$17.run(TestRunner.java:644)
obj is of type com.logica.omg.ext.cingular.submit.DecodeArray
obj is an instance of SmppDeliverRequest
Satish

Java classes classpath problem in jsp

          Hi
          when i compile jsp .its giving compile errors that it can not resolve name.the
          name is the class name of java which i am calling in jsp.Can any body tell what
          might be the problem


          What is the URL you are using?
          What is the name of the JSP file?
          What directory is it in?
          What is your JSP working directory?
          You should be using the relative directory plus the name of the JSP file, not
          the name of the java class.
          i.e. http://localhost/myjsps/test.jsp
          NOT
          http://localhost/_jsp_dir/_myjsps/_test.java
          Mike Reiche
          "Damodar kovi" <[email protected]> wrote:
          >
          >Hi
          >
          >when i compile jsp .its giving compile errors that it can not resolve
          >name.the
          >name is the class name of java which i am calling in jsp.Can any body
          >tell what
          >might be the problem

Class Cast problem when attempting to add Object in TreeSet, Please Help...

hi friends,
I have a TreeSet Object in which i add Object of type WeatherReport but when I trying to add my Second WeatherReport Object it throwing ClassCastException please Help Me in figure out the mistake that i did...
/*code sample of my WeatherReport.class*/
package com;
class WeatherReport implements Serializable
private String region;
private String desc;
private String temp;
/*equvalent getter and setters come here*/
/*in my jsp*/
<%@ page import="com.WeatherReport"%>
<%
TreeSet<com.WeatherReport> ts=new TreeSet<com.WeatherReport>();
while(condition)
WeatherReport wp=new WeatherReport();
/*setting data for all the Methods*/
ts.add(wp);
%>
Error:
java.lang.ClassCastException: com.WeatherReport
        at java.util.TreeMap.compare(TreeMap.java:1093)
        at java.util.TreeMap.put(TreeMap.java:465)
        at java.util.TreeSet.add(TreeSet.java:210)
        at org.apache.jsp.Weather_jsp._jspService(Weather_jsp.java:138)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)Edited by: rajaram on Oct 31, 2007 12:56 AM

hi ChuckBing,
Thank you very much, your suggestion helps me a lot...
I change the WeatherReport Class as follows and its working now...
public class WeatherReport implements Serializable,Comparable {
    private String location;
    private String temp;
    private String desc;
    public int compareTo(Object o) {
        if(o instanceof WeatherReport)
            WeatherReport wp=(WeatherReport)o;
            String l1=wp.getLocation();
            String l2=this.getLocation();
            return l2.compareTo(l1);
        return -1;
}Once Again Thanks a lot ...
Edited by: rajaram on Oct 31, 2007 9:11 PM

(Class cast Exception)Problem while loading data fro database in java class

Dear all,
Please help me...to solve this
I have a database having two columns of String and Date Types.
In my java code i was trying to load the data to a UI.
I am successfull in loading the String type value.
But while loading date field value,is showing Class cast Exception.
What i am doing is Getting the values from database to a String[] array.
So my question is how to
get the Date field as date field itself,Then convert it to a String..Then put it in to String[] array...
Any body please help...If any one want more clarification in question i will give......

Hi,
I am using GWT to display my data in a Grid.
So it will accept a Single two dimensional String array....Here i have one as String and other as Date.
So i was trying to get each row in a sindle dimensional array array[] then store it in a list.
Iteration goes up to 10 rows.After i am setting it in to a list
ie list.add(array);
Now while returning this list i am doing this
"return (String[][])list.toArray(new String[0][]);"
When i tried to get the date element to String array it is showing class cast exception. When i tried with toString() method it is showing the same problem.

Type problem - Class Cast Exception - trying to understand

hello,
i get a Class cast exception in the following code.
interface Foo {}
class Alpha implements Foo {}
class Beta extends Alpha {}
class Delta extends Beta {
public static void main( String[] args ) {
Beta x = new Beta();
Beta b = (Beta)(Alpha)x; //fine
Foo f = (Delta)x; //CCE
Object ob = new Object();
String s = new String();
ob = s; //fine, no need of case
s = (String)ob; //needs a castI was just thinking, implicitly Delta and Beta both of them IS-A Foo, and assigning x to a type foo shouldnt be a problem(while making it refer to the Delta class) so, what could cause the CCE ?
I would appreciate if someone could please help me understand this.
Rgds

Hi.
Assigning your "x" to a variable typed Foo is not a problem. The problem is that you are trying to cast an instance of Beta ("x") into type Delta which is not possible. Every Delta is a Beta, but not every Beta will be a Delta!
Simple as that.
Bye.

Problems trying to "hot-deploy" class files in iPlanet. Want to deploy a compiled class (i.e. servlet, jsp) without having to bounce the server. Known issue in iPlanet? How can I get around?

Currently iPlanet is not allowing us to hot deploy a modified class file(i.e., servlet) as it advertises. It doesn't seem to have a problem with jsp's however. But everytime we modify a servlet(say in an emergency), and wish to deploy, we still have to bounce the KJS. We would like to avoid this if possible. How? I heard this might be a known issue in iPlanet.

I apologize but this is a clarification of this problem. We are having a problem dynamically reloading java classes that are referenced by jsp's and servlets. The problem DOES NOT exist when trying to reload jsps or servlets themselves. We would like to reload these classes without having to restart the processes. Any thoughts would be helpful. Thanks.

Class Cast exception when clicking Search Button in Query component

Hi
We have to implement the Query component in ADF programmatically.. We are using Toplink as the Model layer for ADF.
We followed the Web User Interface Guide for ADF development, Chapter 12 (Using Query Components) for the same.
We already have implemented the following classes:
1) QueryModel
2) QueryDescriptor
3) AttributeDescriptor
4) ConjuctionCriterion
5) AttributeCriterion etc.
We are able to see the Search panel in UI with selected fields in Basic as well as Advanced mode.
When we click on Search button, we are getting Class Cast exception.
The stacktrace of the exception is below:
<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase INVOKE_APPLICATION 5
javax.el.ELException: java.lang.ClassCastException: view.QueryDescriptorImpl cannot be cast to oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding$QueryDescriptorImpl
     at com.sun.el.parser.AstValue.invoke(Unknown Source)
     at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodExpression(UIXComponentBase.java:1300)
     at oracle.adf.view.rich.component.UIXQuery.broadcast(UIXQuery.java:116)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.broadcastEvents(LifecycleImpl.java:902)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:313)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:186)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
     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$1.run(JpsAbsFilter.java:111)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: java.lang.ClassCastException: view.QueryDescriptorImpl cannot be cast to oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding$QueryDescriptorImpl
     at oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding.processQuery(FacesCtrlSearchBinding.java:374)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     ... 44 more
<RegistrationConfigurator> <handleError> ADF_FACES-60096:Server Exception during PPR, #1
javax.el.ELException: java.lang.ClassCastException: view.QueryDescriptorImpl cannot be cast to oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding$QueryDescriptorImpl
     at com.sun.el.parser.AstValue.invoke(Unknown Source)
     at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodExpression(UIXComponentBase.java:1300)
     at oracle.adf.view.rich.component.UIXQuery.broadcast(UIXQuery.java:116)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.broadcastEvents(LifecycleImpl.java:902)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:313)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:186)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
     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$1.run(JpsAbsFilter.java:111)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: java.lang.ClassCastException: view.QueryDescriptorImpl cannot be cast to oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding$QueryDescriptorImpl
     at oracle.adfinternal.view.faces.model.binding.FacesCtrlSearchBinding.processQuery(FacesCtrlSearchBinding.java:374)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     ... 44 more
Any help will be highly appreciated.
Thanks in advance.
Anup

Gary Tam wrote:
I am working on a project that utilize Oracle Ultra Search that will crawl and tag documents in the database.
The initial code that uses pure JDBC was working fine, but when we switch to get database connection from dataSource, we are getting classCast exception inside Oracle's ultra search. The problems is that the class we get from dataSource.getConnection() returns
"weblogic.jdbc.wrapper.JTSConnection_oracle_jdbc_driver_T4CConnection". But Oracle UltraSearch is not expecting that.
Is there anyway to unwrap the connection that we get from dataSource ? I tried casting to OracleConnection,
assign the connection to "oracle.jdbc.driver.T4CConnection" without any success.
Any help would be appricated.
ThanksHi Gary. If the code you want to run is running inside WebLogic, such as in a JSP,
then look for our documentation on our JDBC extension 'getVendorConnection()". It
will get you a direct Oracle connection for their mis-declared UltraSearch
classes (they declare they take java.sql.Connection, but they really demand a
concrete thin driver connection. No other Oracle driver will be given a chance).
Joe

Class casting problems in JSP's

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