Bug? dispatcher chain is empty in http filter EA1

In JDeveloper EA1 (and DP) we can not call request.getParameter inside a HTTP filter.
Is it not legal to cast ServletRequest to a HttpServletRequest in the filter? This is production code that works fine i 9.0.4
The following code:
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest hReq = (HttpServletRequest) request;
String cbtDataIn = hReq.getParameter("cbtData");
Will give you:
ERROR [ApplicationServerThread-0] (HibernateFilter.java:39) - ERROR IN FILTER
java.lang.IllegalStateException: dispatcher chain is empty
     at com.evermind.server.http.EvermindHttpServletRequest.getCurrentDispatcher(EvermindHttpServletRequest.java:4154)
     at com.evermind.server.http.EvermindHttpServletRequest.getParameters(EvermindHttpServletRequest.java:1414)
     at com.evermind.server.http.EvermindHttpServletRequest.getParameter(EvermindHttpServletRequest.java:2228)
     at se.sjv.sso.sso.SecurityFilter.doFilter(SecurityFilter.java:57)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at se.sjv.valhall.hibernate.HibernateFilter.doFilter(HibernateFilter.java:32)
     at com.evermind.server.http.FileRequestDispatcher.handleWithFilter(FileRequestDispatcher.java:135)
     at com.evermind.server.http.FileRequestDispatcher.unprivileged_forwardInternal(FileRequestDispatcher.java:283)
     at com.evermind.server.http.FileRequestDispatcher.access$100(FileRequestDispatcher.java:30)
     at com.evermind.server.http.FileRequestDispatcher$2.oc4jRun(FileRequestDispatcher.java:254)
     at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:274)
     at com.evermind.server.http.FileRequestDispatcher.forwardInternal(FileRequestDispatcher.java:259)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:863)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:245)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:231)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$1000(ServerSocketAcceptHandler.java:33)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:820)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)
ERROR [ApplicationServerThread-0] (HibernateFilter.java:39) - FEL FÅNGAT AV FILTER
java.lang.IllegalStateException: dispatcher chain is empty
     at com.evermind.server.http.EvermindHttpServletRequest.getCurrentDispatcher(EvermindHttpServletRequest.java:4154)
     at com.evermind.server.http.EvermindHttpServletRequest.getParameters(EvermindHttpServletRequest.java:1414)
     at com.evermind.server.http.EvermindHttpServletRequest.getParameter(EvermindHttpServletRequest.java:2228)
     at se.sjv.sso.sso.SecurityFilter.doFilter(SecurityFilter.java:57)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at se.sjv.valhall.hibernate.HibernateFilter.doFilter(HibernateFilter.java:32)
     at com.evermind.server.http.FileRequestDispatcher.handleWithFilter(FileRequestDispatcher.java:135)
     at com.evermind.server.http.FileRequestDispatcher.unprivileged_forwardInternal(FileRequestDispatcher.java:283)
     at com.evermind.server.http.FileRequestDispatcher.access$100(FileRequestDispatcher.java:30)
     at com.evermind.server.http.FileRequestDispatcher$2.oc4jRun(FileRequestDispatcher.java:254)
     at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:274)
     at com.evermind.server.http.FileRequestDispatcher.forwardInternal(FileRequestDispatcher.java:259)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:863)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:245)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:231)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$1000(ServerSocketAcceptHandler.java:33)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:820)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)

We do not get this problem when we call a JSP file.
index.jsp - filter is OK
index.html - filter is not OK - dispatcher chain is empty
Please tell me that this a bug in OC4J.
Cheers,
Rickard Nilsson
Here is the code and the exception again:
package web1.view;
import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestFilter implements Filter {
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
try {
HttpServletRequest hReq = (HttpServletRequest) request;
HttpServletResponse hRes = (HttpServletResponse) response;
String cbtDataIn = hReq.getParameter("cbtData");
String b = cbtDataIn;
} catch (Throwable t) {
t.printStackTrace();
public void init(FilterConfig config) throws ServletException {
public void destroy() {
05/11/17 11:54:27 java.lang.IllegalStateException: dispatcher chain is empty
05/11/17 11:54:27      at com.evermind.server.http.EvermindHttpServletRequest.getCurrentDispatcher(EvermindHttpServletRequest.java:4154)
05/11/17 11:54:27      at com.evermind.server.http.EvermindHttpServletRequest.getParameters(EvermindHttpServletRequest.java:1414)
05/11/17 11:54:27      at com.evermind.server.http.EvermindHttpServletRequest.getParameter(EvermindHttpServletRequest.java:2228)
05/11/17 11:54:27      at web1.view.TestFilter.doFilter(TestFilter.java:15)
05/11/17 11:54:27      at com.evermind.server.http.FileRequestDispatcher.handleWithFilter(FileRequestDispatcher.java:137)
05/11/17 11:54:27      at com.evermind.server.http.FileRequestDispatcher.unprivileged_forwardInternal(FileRequestDispatcher.java:283)
05/11/17 11:54:27      at com.evermind.server.http.FileRequestDispatcher.access$100(FileRequestDispatcher.java:30)
05/11/17 11:54:27      at com.evermind.server.http.FileRequestDispatcher$2.oc4jRun(FileRequestDispatcher.java:254)
05/11/17 11:54:27      at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:274)
05/11/17 11:54:27      at com.evermind.server.http.FileRequestDispatcher.forwardInternal(FileRequestDispatcher.java:259)
05/11/17 11:54:27      at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:863)
05/11/17 11:54:27      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
05/11/17 11:54:27      at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218)
05/11/17 11:54:27      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)
05/11/17 11:54:27      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
05/11/17 11:54:27      at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:245)
05/11/17 11:54:27      at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:231)
05/11/17 11:54:27      at oracle.oc4j.network.ServerSocketAcceptHandler.access$1000(ServerSocketAcceptHandler.java:33)
05/11/17 11:54:27      at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:820)
05/11/17 11:54:27      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
05/11/17 11:54:27      at java.lang.Thread.run(Thread.java:595)

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