Problems with Binding an Enterprise Bean

I am using Sun Appserver 8 on a Linux Enterprise 3 Workstation . I have the Converter example working properly. I have verified and deployed (with out error) my own application which uses a JSP as the Web Component. The JSP looks up a stateless Session Bean POSControllerBean. When running the JSP either on local host or in a brower on a remote system the App Server returns an error "no object bound to java:/comp/env/ejb/POSControllerHome". The JNDI name for this object is POSControllerBean. I have been fighting this for a few hours now and would appreciate any help I can get.

You may want to change the JNDI name to
ejb/POSControllerHome
vbkThanks for the input. That wasn't the problem put it did send me down the right road. I changed the JNDI name to POSControllerEJB and the reference name to ejb/POSControl. In the .jsp that does the lookup I found that the string being passed to lookup was java:/comp/env/ejb/POSControl. Dumb! It should be java:comp/env/ejb/POSControl. There should be a "/" after the colon. If I would only slow down I could be dangerous. I would be embarrassed to tell you how many hours I spent on this. Thanks for gettting me to go through the code one more time.

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Problem with binding in rich:tabPanel

I have the problem with binding in rich component. In the first request the tabPanel work fine, but in the second request the component is not displayed. When i remove binding="#{organizationController.tabPanel}" everything works well. Anybody can help me? thanks.
<rich:tabPanel style="height : 63px; width:auto; border:0px;" id="panelOrganizationForm" binding="#{organizationController.tabPanel}" >
<rich:tab label="Dados da organizacao" id="tab1">
               <h:panelGrid columns="2" id="panelGridOrganizationForm">
     <h:outputText value="Id: " id="idlabel"/>
     <h:inputText value="#{organizationController.organization.organizationId}" styleClass="input" id="organizationId" required="true"/>
     <h:outputText value="Nome: " id="nameLabel"/>
     <h:inputText size="60" value="#{organizationController.organization.organizationName}"
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     </rich:tab>
</rich:tabPanel>
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Guys
Thanks a lot, both of your replies are immensely instructive. Maybe a little background on what I'm trying to do. In the table, I have header rows with dependent line rows. When a check box is ticked in the header, I want the corresponding check boxes in the dependent lines to be checked automatically (in slave fashion and ideally without using JavaScript). My idea was to update the bound components (for the lines) from within the Bean (in response to change on the header). However, given there's only a single component for each column in the table, this of course doesn't make sense.
I'm trying to get to the typical MVC workflow of a) user updates a View component, b) Controller detects the change and updates the Model, c) The Model fires a property change event, which the View detects and updates appropriately. What's the way to achieve this in JSF (by design)?
Here's a simple fragment (which does not work):
        <h:dataTable value="#{bean.lines}" var="line">
          <h:column>
            <h:outputText value="#{line.id}"/>
          </h:column>
          <h:column>
            <!-- (1) This is the master and (2) should refresh on update here --/>
            <h:selectBooleanCheckbox onchange="submit()" value="#{line.lineSelected}"/>
          </h:column>
          <h:column>
            <!-- (2) This is the slave and I want this to update in response to a change of (1) above --/>
            <h:selectBooleanCheckbox value="#{line.slaveSelected}"/>
          </h:column>
        </h:dataTable>In the setter method for lineSelected, I'm setting slaveSelected to the new value but the View is not refreshing based on this. How do I get the View to update (each dependent line) based on the new values for slaveSelected?
Thanks again
Lance

Problem with mapping the Entity beans onto database tables

Hi,
I got a problem with mapping the Entity beans onto database tables. Here are what I did:
First Step:
asant capture-schema
Second Step:
capture-schema -driver com.pointbase.jdbc.jdbcUniversalDriver -dburl jdbc:pointbase:server://localhost/sun-appserv-samples -username pbPublic -password pbpublic -table APPLICANT -table APPLICANTSKILL -table CUSTOMER -table LOCATION -table job -table JOBSKILL -table SKILL -out build/agency.dbschema
The first step was fine. But, in the second step, I got the error message as follow:
using dburl:jdbc:pointbase:server://localhost/sun-appserv-samples
using username:pbPublic
using password:pbpublic
using driver:com.pointbase.jdbc.jdbcUniversalDriver
using schemaname:null
using output file:build/agency.dbschema
JDO71100: Failed to find a class. Verify that the class is available on your CLASSPATH
java.lang.ClassNotFoundException: com.pointbase.jdbc.jdbcUniversalDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at com.sun.forte4j.modules.dbmodel.jdbcimpl.ConnectionProvider.<init>(Co
nnectionProvider.java:38)
at com.sun.jdo.api.persistence.mapping.ejb.CaptureSchema.main(CaptureSch
ema.java:130)
at com.sun.jdo.spi.persistence.support.ejb.util.CaptureSchemaWrapper.mai
n(CaptureSchemaWrapper.java:29)
Thanks for your help!

You need to add the pbclient.jar or some similar name like that, in the CalssPath.

Problem with binding in h:dataTable

Hi
I have a problem with h:dataTable, where the table rows are bound to objects (Bean$Line) nested within a backing bean (Bean).
JSP:
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<html>
<f:view>
    <head>
      <link href="styles.css" rel="stylesheet" type="text/css"/>
      <title>Sandbox</title>
    </head>
    <body>
      <h:form>
        <h:dataTable value="#{bean.lines}" var="line">
          <h:column>
            <h:outputText value="#{line.id}"/>
          </h:column>
          <h:column>
            <!-- using value = line.lineSelected here works (assuming boolean property Line.lineSelected) --/>
            <h:selectBooleanCheckbox binding="#{line.lineSelected}"/>
          </h:column>
        </h:dataTable>
      </h:form>
    </body>
</f:view>
</html>Bean:
package com.test;
import java.util.ArrayList;
import java.util.List;
import javax.faces.component.UISelectBoolean;
public final class Bean {
private final List<Line> lines;
public Bean() {
    lines = new ArrayList<Line>();
    lines.add(new Line("one"));
    lines.add(new Line("two"));
    lines.add(new Line("three"));
public List<Line> getLines() {
    return lines;
   * Nested class in order to access containing class
   * properties etc.
public static class Line {
    //private boolean lineSelected = false;
    private UISelectBoolean lineSelected;
    private String id;
    public Line(String id) {
      this.id = id;
    /*public boolean isLineSelected() {
      return lineSelected;
    public void setLineSelected(boolean lineSelected) {
      this.lineSelected = lineSelected;
    public UISelectBoolean getLineSelected() {
      return lineSelected;
    public void setLineSelected(UISelectBoolean lineSelected) {
      this.lineSelected = lineSelected;
    public String getId() {
      return id;
    public void setId(String id) {
      this.id = id;
} // Line
}The setup works when I use value="#{line.lineSelected}" (assuming the property is defined as boolean in Bean$Line) but as soon as I use a binding, I get the following exception:
com.sun.rave.web.ui.appbase.ApplicationException: javax.servlet.ServletException: javax.el.PropertyNotFoundException: Target Unreachable, identifier 'line' resolved to null
at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.cleanup(ViewHandlerImpl.java:594)
at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:325)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
faces_config:
<faces-config version="1.2"
              xmlns="http://java.sun.com/xml/ns/javaee"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">
<application>
    <locale-config>
      <default-locale>en_GB</default-locale>
      <supported-locale>en_GB</supported-locale>
    </locale-config>
</application>
<managed-bean>
    <managed-bean-name>bean</managed-bean-name>
    <managed-bean-class>com.test.Bean</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>What am I missing here?
Help much appreciated
Lance

Guys
Thanks a lot, both of your replies are immensely instructive. Maybe a little background on what I'm trying to do. In the table, I have header rows with dependent line rows. When a check box is ticked in the header, I want the corresponding check boxes in the dependent lines to be checked automatically (in slave fashion and ideally without using JavaScript). My idea was to update the bound components (for the lines) from within the Bean (in response to change on the header). However, given there's only a single component for each column in the table, this of course doesn't make sense.
I'm trying to get to the typical MVC workflow of a) user updates a View component, b) Controller detects the change and updates the Model, c) The Model fires a property change event, which the View detects and updates appropriately. What's the way to achieve this in JSF (by design)?
Here's a simple fragment (which does not work):
        <h:dataTable value="#{bean.lines}" var="line">
          <h:column>
            <h:outputText value="#{line.id}"/>
          </h:column>
          <h:column>
            <!-- (1) This is the master and (2) should refresh on update here --/>
            <h:selectBooleanCheckbox onchange="submit()" value="#{line.lineSelected}"/>
          </h:column>
          <h:column>
            <!-- (2) This is the slave and I want this to update in response to a change of (1) above --/>
            <h:selectBooleanCheckbox value="#{line.slaveSelected}"/>
          </h:column>
        </h:dataTable>In the setter method for lineSelected, I'm setting slaveSelected to the new value but the View is not refreshing based on this. How do I get the View to update (each dependent line) based on the new values for slaveSelected?
Thanks again
Lance

Problems with JSP and MySql bean.

Hi,
I'm new to JSP and I'm having some problems with it. I'm trying to do a simple login where a java class (bean?) handles the SQL injektion. I have deployed the page on tomcat and it works fine, except that the sqlinjektion does basically nothing. I have installed the mysql driver. I think there is something wrong with the java class, or the way im calling it. It does not produce any error. But its like it would never actually process the java code, because ive tried to append things to error string to see what is going on, nothing happens. everything stay null, no exceptions are thrown. If I implement the code to JSP itself, it does load the driver and print exception that there is no connection to database (which is correct). What am I missing? Code follows:
the sqlhandler:
public abstract class SqlInjektor {
     private static String Database = "*****";
     private static String serverName = "localhost:3306";
     private static String usrName="******";
     private static String passw="******";
     * @return Connection
     public static Connection createConnection(String error){
          Connection mySqlCon = null;
          try{
               Class.forName("com.mysql.jdbc.Driver").newInstance();
          catch(Exception E){
               PrintWriter out = response.getWriter();
               out.println("lol");
          String url = "jdbc:mysql://" + serverName + "/" + Database + "?user=" + usrName + "&password=" + passw;
          try{
               mySqlCon = DriverManager.getConnection(url);
          catch (Exception E){
               E.printStackTrace(System.out);
          return mySqlCon;
     * Metodi saa sy�tteen��n SQL komennon, jonka se suorittaa sek� palauttaa komennon tulokset.
     * @param command
     * @return ResultSet
     public static ResultSet querySQL(String command,String error, Connection con){
          ResultSet rs = null;
          try{
               Statement stmt = con.createStatement();
               rs = stmt.executeQuery(command);
          catch(Exception E){
               E.printStackTrace(System.out);
          return rs;
the jsp page:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page isErrorPage="false" %>
<%@ page import="java.sql.*" %>
<%@page import="ot3.User"%>
<%@page import="ot3.SqlInjektor"%>
<%@page import="Javax.servlet.jsp.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>vastaanotto</title>
</head>
<body>
<%!      String id;
     String password;
     String error = new String("Error!\n");
     User user;
%>
<%      user = new User();
     session.putValue("currentUser",user);
     id = request.getParameter("authName");
password = request.getParameter("Password");
     Connection conn=null;
     ResultSet rs=null;
     conn = SqlInjektor.createConnection(error);
     if(conn!=null){
          out.println("conn ok!");
          rs = SqlInjektor.querySQL("SELECT * FROM user WHERE id='" + id +"' AND password='" + password+"' COLLATE latin1_bin;",error,conn);}
     try {
          if (rs!= null && rs.next()){
               user.setID(rs.getInt("id"));
               user.setName(rs.getString("name"));
               user.setPassword(rs.getString("password"));
               user.setClearance(rs.getInt("clearance"));
               if(rs.getString("addedby")!=null)
                    user.setAdder(rs.getInt("addedby"));
               if(rs.getString("lastmodifier")!=null)
                    user.setModifier(rs.getInt("lastmodifier"));
               rs.close();%>
               ONNISTU!
          <%}
          else {
               out.println(error);
     } catch (SQLException e) {
          out.println(e.getMessage());
     }%>
</body>
</html>

Hi,
I'm new to JSP and I'm having some problems with it. I'm trying to do a simple login where a java class (bean?) handles the SQL injektion. I have deployed the page on tomcat and it works fine, except that the sqlinjektion does basically nothing. I have installed the mysql driver. I think there is something wrong with the java class, or the way im calling it. It does not produce any error. But its like it would never actually process the java code, because ive tried to append things to error string to see what is going on, nothing happens. everything stay null, no exceptions are thrown. If I implement the code to JSP itself, it does load the driver and print exception that there is no connection to database (which is correct). What am I missing? Code follows:
the sqlhandler:
public abstract class SqlInjektor {
     private static String Database = "*****";
     private static String serverName = "localhost:3306";
     private static String usrName="******";
     private static String passw="******";
     * @return Connection
     public static Connection createConnection(String error){
          Connection mySqlCon = null;
          try{
               Class.forName("com.mysql.jdbc.Driver").newInstance();
          catch(Exception E){
               PrintWriter out = response.getWriter();
               out.println("lol");
          String url = "jdbc:mysql://" + serverName + "/" + Database + "?user=" + usrName + "&password=" + passw;
          try{
               mySqlCon = DriverManager.getConnection(url);
          catch (Exception E){
               E.printStackTrace(System.out);
          return mySqlCon;
     * Metodi saa sy�tteen��n SQL komennon, jonka se suorittaa sek� palauttaa komennon tulokset.
     * @param command
     * @return ResultSet
     public static ResultSet querySQL(String command,String error, Connection con){
          ResultSet rs = null;
          try{
               Statement stmt = con.createStatement();
               rs = stmt.executeQuery(command);
          catch(Exception E){
               E.printStackTrace(System.out);
          return rs;
the jsp page:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page isErrorPage="false" %>
<%@ page import="java.sql.*" %>
<%@page import="ot3.User"%>
<%@page import="ot3.SqlInjektor"%>
<%@page import="Javax.servlet.jsp.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>vastaanotto</title>
</head>
<body>
<%!      String id;
     String password;
     String error = new String("Error!\n");
     User user;
%>
<%      user = new User();
     session.putValue("currentUser",user);
     id = request.getParameter("authName");
password = request.getParameter("Password");
     Connection conn=null;
     ResultSet rs=null;
     conn = SqlInjektor.createConnection(error);
     if(conn!=null){
          out.println("conn ok!");
          rs = SqlInjektor.querySQL("SELECT * FROM user WHERE id='" + id +"' AND password='" + password+"' COLLATE latin1_bin;",error,conn);}
     try {
          if (rs!= null && rs.next()){
               user.setID(rs.getInt("id"));
               user.setName(rs.getString("name"));
               user.setPassword(rs.getString("password"));
               user.setClearance(rs.getInt("clearance"));
               if(rs.getString("addedby")!=null)
                    user.setAdder(rs.getInt("addedby"));
               if(rs.getString("lastmodifier")!=null)
                    user.setModifier(rs.getInt("lastmodifier"));
               rs.close();%>
               ONNISTU!
          <%}
          else {
               out.println(error);
     } catch (SQLException e) {
          out.println(e.getMessage());
     }%>
</body>
</html>

Problem with Bind Variable in 11.2

Hi
I have a slow statement with bind Variables. With literals it works fine. Is there a way to replace the bind by literal in advanced ? I use Release 11.2.0.2.3
Thank you

904062 wrote:
I have a slow statement with bind Variables. With literals it works fine. Is there a way to replace the bind by literal in advanced ? I use Release 11.2.0.2.3This specific scenario is very much an exception to the rule - and you need to back your statement up with execution plans of the SQL with bind variables and with literals, and run stats that show the difference between these two execution plans.
See the {message:id=9360003} from the {forum:id=75} forum's FAQ for details on how to post a SQL performance tuning question.

Problem with Read-Only Entity Bean

Hi All,
I have an Read-Only BMP that just read data from 20 tables and stores them in a Collection. In a 'Read-Only' Entity bean, the ejbLoad() is supposed to called periodically as defined by 'read-timeout-seconds' parameter in 'weblogic-ejb-jar.xml'. But this doesn't happen. Every time I invoke the EJB, ejbCreate() and ejbLoad() get called. Any suggestions will be highly appreciated.
Here is the content of my 'weblogic-ejb-jar.xml' file.
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN'
'http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>beanManaged</ejb-name>
     <entity-descriptor>
          <entity-cache>
               <max-beans-in-cache>1</max-beans-in-cache>
               <read-timeout-seconds>5</read-timeout-seconds>
               <concurrency-strategy>ReadOnly</concurrency-strategy>
          </entity-cache>
     </entity-descriptor>
<jndi-name>beanManaged</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
Thanks,
Prem

Yes, it calls ejbLoad() at intervals defined by read-timeout-seconds, but only when bean
is requested by the client, and the cached copy is old. If bean just sits in the cache
unused no ejbLoad()'s will be called.
Prem Raghupathy <[email protected]> wrote:
The weblogic document on 'Setting Entity EJBs to Read-Only' says "WebLogic Server
never calls ejbStore() for a read-only entity EJB. ejbLoad() is called initially
when the EJB is created; afterwards, WebLogic Server calls ejbLoad() only at intervals
defined by the read-timeout-seconds deployment parameter.". Here is the link to
the document
http://edocs.bea.com/wls/docs61/ejb/EJB_environment.html#1074846
Dimitri Rakitine <[email protected]> wrote:
WebLogic doesn't reload Read-Only entity beans periodically. It loads
bean instance only when client requests it, and instance is not in the
cache, or cached instance is older than read-timeout-seconds.
Prem Raghupathy <[email protected]> wrote:
This is a multi-part message in MIME format.
---=_newsgroups3c21148f
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Rajesh,
Thanks for your reply. I’m using WL6.1 sp1. When I log the methodcalls,
this is what I see on the server console.
SetEntityContext()
ejbCreate()
ejbPostCreate()
ejbLoad()
As you see, the ejbLoad() doesn’t get called every 5 sec, eventhough I
set the ‘read-timeout-seconds=5’ in the weblogic-ejb-jar.xml,
Do you have a working example for Read-Only BMP on WL6.1? The examplesdirectory
in weblogic 6.1 doesn’t have one.
Also find attached all the files. Any suggestions will be highly appreciated.
Thanks,
Prem.
Rajesh Mirchandani <[email protected]> wrote:
What version of the Server and Service pack are you using? Turn on
JDBC
logging and see if every ejbLoad() hits the DB.
prem wrote:
Hi All,
I have an Read-Only BMP that just read data from 20 tables and storesthem in a Collection. In a 'Read-Only' Entity bean, the ejbLoad() is
supposed to called periodically as defined by 'read-timeout-seconds'
parameter in 'weblogic-ejb-jar.xml'. But this doesn't happen. Every
time I invoke the EJB, ejbCreate() and ejbLoad() get called. Any suggestions
will be highly appreciated.
Here is the content of my 'weblogic-ejb-jar.xml' file.
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
'-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN'
'http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>beanManaged</ejb-name>
<entity-descriptor>
<entity-cache>
<max-beans-in-cache>1</max-beans-in-cache>
<read-timeout-seconds>5</read-timeout-seconds>
<concurrency-strategy>ReadOnly</concurrency-strategy>
</entity-cache>
</entity-descriptor>
<jndi-name>beanManaged</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
Thanks,
Prem--
Rajesh Mirchandani
Developer Relations Engineer
BEA Support
---=_newsgroups3c21148f
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---=_newsgroups3c21148f----
Dimitri
Dimitri

BAM: Problem with 'Binding' while creating event linkage

Hello colleagues.
We have an ECC 6.0 and a PI 7.1 system. I want to create a prototype using the features of BAM.
In transaction SWF_BAM, i tried to create a binding for the OB proxy parameters and the event object parameters. Unfortunately, the proxy class no longer has the method 'EXECUTE_ASYNCHRONOUS' and hence i am unable to create the binding.
Any pointers on how to go about this. Please also let me know if i am not doing it the right way.
Regards,
Keshav

HI Keshav,
Try writing the method which u create in the same name as the implementing class; also known as the provider class. I have faced the same problem, and when writing the method, use the operation name, which is used in PI 7.1, while creating the interface, and there shouldn't be any problem during Binding.
Regards,
Abhisek.

Problem with oracle weblogic enterprise manager 11g.

hi guys,
i am sai sandeep, i am using weblogic server for running oracle forms and reports in oracle11g,
actually my problem with running reports ,
if any report is failed, then complete reports are going to fail ,not only in the current user but also all the users.
it will work until kill all the failed jobs in oracle weblogic enterpraise manager.
so,please tell me what is the solution..
thank you....

Please ask your question in the WebLogic Server forum (https://forums.oracle.com/community/developer/english/fusion_middleware/application_server/weblogic_server_-_general).
Craig...

Bootcamp problems with Windows 7 Enterprise

Hi,
I have problems installing "Windows 7 Enterprise 90-days Trial" version using Boot Camp.
The screen stays white when bootcamp should have started the installation from DVD.
Before this, I created a 100 GB partion without any problems.
Any suggestions are welcome.

Thanks for the answer, it may be helpful, because I ran into a new problem after solving my first problem.
The first problem was solved by using the original (broken) apple mouse instead of the one, I am using now.
After the windows setup started, I ran into a new problem: The setup process stop when unpacking the windows files. The progress counter never increments from 0 %.
Maybe this is due to the writing speed of the DVD.

Difficult ClassLoader problems with multiple deployed enterprise Apps

Greetings!
When multiple instances of an enterprise application are deployed, ClassLoader issues are causing ClassCast Exceptions in the instantiation of Stateless SessionBeans. These ClassCast Exceptions are causing the Stateless Session beans to not be created appropriately/correctly, and in turn there is an InvocationTargetException resulting in an HTTP 500 Internal Server Error (mapped to a custom handler).
The setup is SJSAS2005Q2, JDK 1.5, MySQL 5.0, Linux (RedHat 9, and Debian 3.0/3.1)
Below is a typical example:
Exception creating stateless session bean : [{0}]java.lang.reflect.InvocationTargetException
<<long stack Trace omitted>>
Caused by: java.lang.ClassCastException: $Proxy111     at com.acjust.ecommerce.ejb.preferences.PreferenceManagerBean.ejbCreate(PreferenceManagerBean.java:354)     ... 67 moreHere is the code from PreferenceManagerBean, the offending line is the (first one) that does a lookup on PreferencesBean and casts the result. This is a SessionFacade (there are many others) and they all (may) exhibit this behavior when there are multiple enterprise apps running.
    public void ejbCreate() {
         LookupServiceHelper lookup = LookupServiceHelper.getInstance();
         preferencesHome = (LocalPreferencesHome)
               lookup.getLocalHome(IConstants.PREFERENCES_BEAN);
         companyInformationHome = (LocalCompanyInformationHome)
               lookup.getLocalHome(IConstants.COMPANY_INFORMATION_BEAN);
         businessAddressHome = (LocalBusinessAddressHome)
               lookup.getLocalHome(IConstants.BUSINESS_ADDRESS_BEAN);
         sitePreferencesHome = (LocalSitePreferencesHome)
               lookup.getLocalHome(IConstants.SITE_PREFERENCES_BEAN);
         paymentPreferencesHome = (LocalPaymentPreferencesHome)
               lookup.getLocalHome(IConstants.PAYMENT_PREFERENCES_BEAN);
         productPreferencesHome = (LocalProductPreferencesHome)
               lookup.getLocalHome(IConstants.PRODUCT_PREFERENCES_BEAN);
    }When there is one instance of the App, it works perfectly. When there are two instances, one works perfectly, and the other one will have the above issues with the instantiation of Stateless Session Beans (the broken enterprise app is the one that is NOT loaded or reloaded most recently).
Thinking that the problem may be solved by rearranging or repackaging the software, multiple solutions have been tried. (ClassCast Exceptions such as these are typically the result of helper classes being loaded by one class-loader, then loaded by another, compared or casted, and the two are not equivalent). In this case, though, the software is behaving as though each enterprise app does not have its own class loader hierarchy, which is obviously highly undesirable for the situation at-hand. At any rate, bundling all library classes at the app server classpath level, putting all library classes in each jar, and war, and putting all library classes in the ear/lib directory and using MANIFEST.MF classpath entries to point all ear subcomponents at the library classes - none of these potential solutions has alleviated this problem. In addition, the EJB classes themselves triggering the exception(s) are not helper classes but EJBs that are correctly packaged in their respective EJB-JARS.
Here is the sun SJSAS 8 classloader hierarchy from the userguide:
http://docs.sun.com/source/817-6087/dgdeploy.html#wp58491
Can somebody from the Sun App Server team speak to whether or not this is an Application Server issue? Why should the classloader hierarchy from one enterprise app interfere with any other? Are there known workarounds?
Any help is greatly appreciated.
Best, Adam

Hi Ken,
I have pretty much ruled out "artifacts" in the Application Server's Classpath, because we already tried reinstalling the Application Server. It is a freshly downloaded SJSAS 8 2005 Q2 downloaded a few days ago with nothing added to the Server Classpath other than a database driver [${com.sun.aas.installRoot}/mysql/lib/mysql-connector-java-3.1.11-bin.jar added to the server CLASSPATH suffix after the PointBase driver(s)].
Yes, each ear has its own name. Once the two enterprise apps have been created/packaged by the ANT build script (they are the same except for the slight differences in deployment descriptors we discussed earlier), one is renamed and we use the SJSAS administrative console to deploy them, both deploy correctly, without errors and begin listening for connections at their respective context-roots. Each enterprise application has two web-wars, one public/customer facing, and one administrative. The first enterprise app listens on /e (public facing) and /a (administrative) and the second listens on / (public facing) and /admin (administrative).
Also, you are correct; each ear has its own copy of the LookupServiceHelper class. Again, there is nothing shared on the App Server Classpath other than that jdbc driver for mysql.
Here is the LookupServiceHelper code:
package com.acjust.ecommerce.util;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javax.ejb.EJBLocalHome;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
* This class provides JNDI helper functions to look up EJB
* Home implementations.
* @author Copyright (c) 1998-2005 by A. C. Just, Inc. All Rights Reserved.
public class LookupServiceHelper {
    * This is the only object of type LookupServiceHelper; this class
    * is a singleton.
    private static LookupServiceHelper instance = null;
     * The logging object for this singleton
    private final Logger logger = Logger.getLogger(getClass().getName());
    private InitialContext initialContext = null;
    private Map cache = null;
     * The no argument constructor is private to enforce the fact
     * that we do not want to create any other instances of this
     * class.
    private LookupServiceHelper() {
        try {
            initialContext = new InitialContext();
            cache = Collections.synchronizedMap(new HashMap());
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
     * This method returns the only object of this class.
     * @return instance The only object of type LookupServiceHelper.
    public static LookupServiceHelper getInstance() {
         if(null == instance) {
              try {
                   instance = new LookupServiceHelper();
              } catch (LookupServiceException lse) {
                   instance.logger.severe("Failed to create lookup service " +
                             lse.getMessage());
         return instance;
     * This utility method looks up an enterprise JavaBean
     * in the distributed naming service. It is not type safe;
     * that property is guaranteed by the callers.
     * @param bean The name of the enterprise JavaBean to find
     * in the naming service (a prefix will be automatically added).
     * @return An Object that can be casted to a LocalHomeInterface.
    public EJBLocalHome getLocalHome(String bean) {
        EJBLocalHome localHome = null;
        logger.entering("LookupServiceHelper","getLocalHome",bean);
        try {
            String jndiHomeName = getFullyQualifiedEJBName(bean);
            logger.info("looking for " + jndiHomeName);
            if (cache.containsKey(jndiHomeName)) {
                 logger.info("found cached reference");
                localHome = (EJBLocalHome) cache.get(jndiHomeName);
            } else {
                 logger.info("no reference found; performing lookup");
                localHome = (EJBLocalHome) initialContext.lookup(jndiHomeName);
                cache.put(jndiHomeName, localHome);
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
        logger.exiting("LookupServiceHelper","getLocalHome",localHome);
        return localHome;
     * This utility method looks up a javax.mail.Session session
     * in the distributed naming service. It is not type safe;
     * that property is guaranteed by the callers.
     * @param resource The name of the mail session resource to find
     * in the naming service (a prefix will be automatically added).
     * @return An Object that can be casted to a javax.mail.Session.
    public javax.mail.Session getMailSession(String resource) {
        javax.mail.Session session = null;
        logger.entering("LookupServiceHelper","getMailSession",resource);
        try {
            String jndiName = getFullyQualifiedMailResourceName(resource);
            logger.info("looking for " + jndiName);
            if (cache.containsKey(jndiName)) {
                 logger.info("found cached reference");
                session = (javax.mail.Session) cache.get(jndiName);
            } else {
                 logger.info("no reference found; performing lookup");
                session = (javax.mail.Session) initialContext.lookup(jndiName);
                cache.put(jndiName, session);
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
        logger.exiting("LookupServiceHelper","getMailSession",session);
        return session;
      * Get a connection from the database pool.
      * @return Connection
     public Connection getDBConnection(String resource) {
          Connection connection = null;
          try {
               String jndiName = getFullyQualifiedDBName(resource);
               logger.info("looking for " + jndiName);
               if(cache.containsKey(jndiName)) {
                    logger.info("found cached reference");
                    connection = (Connection) cache.get(jndiName);
               } else {
                    logger.info("no reference found; performing lookup");
                    DataSource dataSource = (DataSource) initialContext
                              .lookup(jndiName);
                    connection = dataSource.getConnection();
                    //do not cache the database connection;
                    //you will get an IllegalStateException if you do
                    //cache.put(jndiName,connection);
          } catch(NamingException ne) {
               logger.warning("getConnection failed (naming): " + ne.getMessage());
               throw new LookupServiceException(ne);
          } catch (SQLException sql) {
               logger.warning("getConnection failed (db): " + sql.getMessage());
               throw new LookupServiceException(sql);
          return connection;
     * This utility method takes an enterprise JavaBean name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param bean The name of the enterprise JavaBean to add.
     * @return The fully qualified name (e.g. java:comp/env/ejb/ABeanRef).
    private String getFullyQualifiedEJBName(String bean) {
        return IConstants.JNDI_EJB_PREFIX + bean;
     * This utility method takes a messaging resource name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param resource The name of the mail resource
     * @return The fully qualified name (e.g. java:comp/env/mail/MailSessionRef).
    private String getFullyQualifiedMailResourceName(String resource) {
        return IConstants.JNDI_MAIL_PREFIX + resource;
     * This utility method takes a messaging resource name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param jdbc The name of the JDBC resource.
     * @return The fully qualified name (e.g. java:comp/env/jdbc/mysql).
    private String getFullyQualifiedDBName(String resource) {
         return IConstants.JNDI_DB_PREFIX + resource;
Some sample exception stack trace(s) (this is a different stateless session than the one before - but indicative of the same problem).
[#|2005-11-10T14:00:20.566-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|EJB5070: Exception creating stateless session bean : [{0}]
java.lang.reflect.InvocationTargetException
     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:585)
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:410)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
Caused by: java.lang.ClassCastException: $Proxy214
     at com.acjust.ecommerce.ejb.client.customermanager.CustomerManagerBean.ejbCreate(CustomerManagerBean.java:71)
     ... 49 more
|#]
[#|2005-11-10T14:00:20.577-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|EJB5018: An exception was thrown during an ejb invocation on [CustomerManagerBean]|#]
[#|2005-11-10T14:00:20.578-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:418)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:599)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:364)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
|#]
[#|2005-11-10T14:00:20.651-0800|WARNING|sun-appserver-pe8.1_02|org.apache.struts.action.RequestProcessor|_ThreadID=29;|Unhandled Exception thrown: class javax.ejb.EJBException|#]
[#|2005-11-10T14:00:20.779-0800|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.system.container.web|_ThreadID=29;|StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:418)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.Proce

Problem with bind variable in subselect

Using the Oracle 9i JDBC Driver and a query of the form:
select * from atable a where a.thing = ? and a.id in (select id from btable where b.something = ?)
via a PreparedStatement, the second parameter is not being set correctly. The query executes but does not return the expected results. If I hard code the param value into the query it works fine. I think the second parameter is being set to an empty string (hence the query executes OK but no results returned). This seems to be peculiar to bind variables in sub-selects.
Has anyone else encountered this problem?

ps.setLong(1, along);
ps.setString(2, astring);
I've checked this against different driver versions. It's OK with the 10.2 driver but fails with the 10.1. So I've moved to the 10.2.

Problem with binding sequences to attributes

Hello everyone.
[you may directly jump to the question at the bottom of this post and if you don't understand what the heck I'm asking, feel free to read the whole post ;)]
I wanted to crate a table node where several attributes are for rows only.
Because i want it to be a CustomNode, the table should be created dynamically (one should at least be able to define different amounts of rows and columns at the initialization).
My problem is a combination of "creating dynamically" and binding attributes.
To create an arbitrary amount of rows i use a "while(i < x) CustomNode{}" loop.
To store the value of an attribute for a row i use sequences. So during the loop i do the following:
someValue: bind sequenceValue[i]
After quite some frustration i finally discovered that all the attributes will be bound to sequenceValue[last value of i].
I don't find the right words right now, so here's some code to demonstrate the problem:
package javafxtestbench;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
import javafx.scene.CustomNode;
import javafx.scene.Node;
import javafx.scene.Group;
import javafx.scene.input.KeyEvent;
var t1 = [true, true, false];
Stage {
    title: "Application title"
    width: 250
    height: 500
    scene: Scene {
        content: [
            Text {
                font : Font {
                    size : 16
                x: 10
                y: 30
                content: "Application content"
            createFubar(),
function createFubar(): Group{
    var grp : Group = Group{
        content:[
            //this works
            /*b1{ blob: bind t1[0]}
            b1{ blob: bind t1[1]}
            b1{ blob: bind t1[2]}*/
            //this doesnt
            createSomeBs(),
        onKeyPressed: function( e: KeyEvent ):Void {
            println("=== KeyPressed ===");
            if (t1[2] == true) t1[2] = false
            else t1[2] = true;
            println("new sequence value: {t1}");
    grp.requestFocus();
    return grp;
function createSomeBs(): Node[]{
    var i = 0;
    var grp : Node[];
    while(i < 3){
        insert b1{
            blob: bind t1[i]
        }into grp;
        i++;
    println("Sequence @ startup: {t1}");
    return grp;
class b1 extends CustomNode{
    public var blob = true on replace{
                println("attribute value b1.blob: {blob}");
    override function create():Node{
        Group{
}As you can see i created a CustomNode (b1) and use two different methods to add it to the scene.
First method: i add b1 thee times to the scene and set the attribute
or
2nd method: i use a loop (its index to bind the corresponding sequence entries to the attributes)
finally i added a key listener, which changes the value of the last sequence value if an arbitrary key has been hit.
output for using the "this works" block (1st method) after pressing some keys:
=== KeyPressed ===
attribute value b1.blob: true
new sequence value: truetruetrue //contains {true, true, true}
=== KeyPressed ===
attribute value b1.blob: false
new sequence value: truetruefalse //contains {true, true, false}and here for the "this doesnt" (2nd method) part:
=== KeyPressed ===
attribute value b1.blob: false
attribute value b1.blob: false
attribute value b1.blob: false
new sequence value: truetruetrueSo even though all elements in the sequence say "true", the attribute values of all CustomNodes will keep saying "false".
Here it's due to the fact that "i" is in the end greater than the sequence (cause by the increment at the end of the loop).
In the end all attributes will be bound to the same entry. So messing around with the index, so it doesn't get beyond the sequence size, won't help.
So to finally bring this post to an end ;P, here's my question:
How do you create an arbitrary amount of Nodes containing attributes which are bound to a list entries?
Edited by: Mr._Moe on 08.09.2009 20:17

HI
May be you can fetch the data from the table with looping the table size and catching the
index of the elements . To be more clear .
1 . get the size of the table .
int leadSelection= wdcontext.node<TableName>.getLeadSelection();
    for (int i=0 ;i<n;i++)
      if(wdcontext.node<tablename>.isMultiselected(leadSelection))
        String name = wdcontext.node<tablename>.getelementatindex(leadSelection).getname();
         similarly fetch the size of the other elements from the table .
    and set to other RFC as
        ZClass abc = new ZClass();
         abc.setName(name);
wdcontext.node<NameName>.bind(abc);
and othere thing is when you use Abstract class you can insert only one element at a time .
or may be you may want to set the values direclty to the RFC
       AbstractList lst = new ZClass.ZClassList();
       ZClass cls = new ZClass();
        clas.setName(name)
lst.add(class);
wdcontext.currentRFcNameElement.modelObject.setName(lst);
and
execute the RFC .
murali

Problem with binding of a selectManyCheckbox inside a dataTable

Hi,
first i want to point out that my english is not the best. :)
A german version is followed at the end of the english text.
I have a class "MyClass" with few attributes like:
private long id;
private String text;
private Set<MyClass2> childs;
An a second class "MyClass2" wich also have some attributes:
private long id;
private String text;
Now i have a List with lots of objects from typ "MyClass":
List myList = new ArrayList();
// Sample Data!!
for (int i=0; i<100; i++)
MyClass1 m1 = new MyClass1();
m1.setId(i);
m1.setText("MyClass1 Line " + i);
// Now add some "childs":
for (int j=0; j<i*2; j++)
MyClass2 m2 = new MyClass2();
m2.setId( i );
m2.setText("Sample "+ i);
m1.getChilds().add(m2);
myList.add ( m1 );
So now i want to show the ID and text every Object of MyClass1 on my "test.jsp" (width JSF Tags).
The Collections inside this class should display as checkboxes (value = id, label = text).
Sample:
ID: +1+ TEXT: MyClass1 Line 1
CHECKBOXES:
[x] Sample 0
[x] Sample 1
ID: +2+ TEXT: MyClass1 Line 2
CHECKBOXES:
[x] Sample 0
[x] Sample 1
[x] Sample 2
[x] Sample 3
Okay i think you know what i mean. ;-)
I tryed it also with a dataTable to iterate in "myList" and use a selectOneMenu with selectItems to generate the checkboxes.
Here is the code:
<h:dataTable value="#{myBean.myList}" var="rowInstance" binding="#{myBean.dataTable}" id="dataTable">
<h:column>
<h:outputText value="ID: #{rowInstance.id}" />
<h:outputText value="TEXT: #{rowInstance.text}" />
</h:column>
<h:column>
<h:selectManyCheckbox id="cbox" styleClass="checkbox">
<f:selectItems value="#{myBean.childs}"/>
</h:selectManyCheckbox>
</h:column>
</h:dataTable>
Maybe you see the that i've used childs in the selectItems.
This is a methode like that:
public SelectItem[] getChilds()
MyClass1 mc1 = (MyClass1) dataTable.getRowData();
// now i iterate the childs and make for each a SelectItem()
Also you maybe see that i have no binding on selectManyCheckbox, because i have no idea how it works. :-)
I've tried to bind it to a String[] but and the end this String[] always contain the last low.
My Question is now:
When the user pressed the submit Button how can i figure out which Checkboxen the user clicked ?
Thank you a lot.
Now the german version (surley better explained):
Hallo nochmal,
ich habe versucht auf englisch mein Problem zu schildern.
Was mit sicherheit nicht zu 100% gelungen ist, deshalb hier noch mal eine deutschsprachige Version (maybe some germans out there).
Wie oben abgeblidet habe ich im Prinzip zwei Klassen.
Die erste Klasse "MyClass1" hat eine Collection die Objekte von der Klasse "MyClass2" enth�lt.
Nun m�chte ich auf meiner JSP Seite die JSF Tags benutzt eine Liste von Objekten (die vom Typ "MyClass1" sind) abbilden.
Die Collection innerhalb dieser Klasse soll als Checkboxen dargestellt werden.
Ich habe es ohne gro�e Probleme hinbekommen, dass er das so anzeigt wie ich das m�chte.
Nur habe ich z.Z. noch Probleme damit wie ich sp�ter herausfinde, welche der Checkboxen denn nun angew�hlt sind.
Normalerweise w�rde man ja ein binding machen, so k�nnte man alle ausgew�hlten Checkboxen (getSelectedValues()) ja bekommen.
Da aber die Anzahl der Objekte immer unterschiedlich ist kann ich nicht die entsprechenden Variablen anlegen.
Deshalb die Frage: Wie bekomme ich mit welche der Checkboxen ausgew�hlt wurden? Wie muss das binding aussehen?
Vielen Dank.
Greetings from Germany. :)

Just bind it to the row object.
JSF<h:dataTable value="#{myBean.myDataList}" var="myData">
    <h:column>
        <h:selectManyCheckbox value="#{myData.selectedItems}">
            <f:selectItems value="#{myData.selectItems}" />
        </h:selectManyCheckbox>
    </h:column>
</h:dataTable>MyDataprivate List<String> selectedItems; // + getter + setter
private List<SelectItem> selectItems; // + getter

Problem with cache refresh entity bean / server node

Hello,
ive got a big problem and not found answer in sdn until now.
Ive got a job that gets data from maxdb by sapjob - jco - session bean - entity bean - database.
this job works daily. the data to work with is written directly to database from external.
on first execute it works, but second etc not. i search for answer and i guess something:
entity bean is cached (increase percormance?) with results of the select and do not know about new database entries when they are written directly to database. so second select says: there is no new data (but they are there).
i only get this new data when i restart netweaver server node, then it works, but only for one time. then result is in cache and then i have to do same procedure before it goes (restart server).
how can i get this data? is there any setting for force node to refresh cache? or any other settings to affect something like this?
we have to go live with this in august.
thx for help.
Version: NW04, SP21

thanks at first.
OSS was the next step i consider, enforcedly.
I hoped that there was a kind of timeout in visual admin or somewhere else where (for example) i can set a special time (seconds?) for refreshig the cache. Or i can set a flag for "do not cache entity beans".
Someone else any idea?
Nowadays on test system whe have made a task that starts windows every night so that netweaver also is "fresh". a kind of resolution but not the best and no resolution for the productiv system. or whe have to write a kind of batch job that only restarts server node once a day.
New Info:
I think cache was filled directly after restart.
when we restart, then data are written, and then our application wanted to read them, they are also not seen.
The data are only seen by bean when the restart takes place AFTER the data are written into db.
So we change restart time to point after data are written. so we will test if this works, on monday we will see.
Edited by: Torsten on Jul 11, 2008 11:27 AM

Problems with Binding an Enterprise Bean

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