Duke's Bank app

[Jose Alvarez de Lara]

Hi,

I have some problems when calling some local-home interfaces from the ejbCreate method of a Session Bean. My code is as followes:

package com.sun.ebank.util;
 
 
/**
 * This interface defines names in code used as args for lookup().
 */
public interface CodedNames {
    public static final String BANK_DATABASE = "java:/DefaultDS";
    public static final String ACCOUNT_EJBHOME = "java:comp/env/ejb/AccountEJB";
    public static final String ACCOUNT_CONTROLLER_EJBHOME = "AccountControllerEJB";
    public static final String ACCOUNT_EJBHOME = "java:comp/env/ejb/CustomerEJB";
    public static final String CUSTOMER_CONTROLLER_EJBHOME = "CustomerControllerEJB";
    public static final String TX_EJBHOME = "java:comp/env/ejb/TxEJB";
    public static final String TX_CONTROLLER_EJBHOME = "TxControllerEJB";
}

where the ACCOUNT_CONTROLLER_EJBHOME, CUSTOMER_CONTROLLER_EJBHOME and TX_CONTROLLER_EJBHOME are the session bean that access to my ACCOUNT_EJBHOME, ACCOUNT_EJBHOME and TX_EJBHOME on their respectively ejbCreate method.

The way to call the diferents EJBs is as followes,

    package com.sun.ebank.util;
     
    import java.util.Properties;
    import javax.rmi.PortableRemoteObject;
    import javax.naming.Context;
    import javax.naming.InitialContext;
    import javax.naming.NamingException;
    import com.sun.ebank.ejb.account.AccountHome;
    import com.sun.ebank.ejb.account.AccountControllerHome;
    import com.sun.ebank.ejb.customer.CustomerHome;
    import com.sun.ebank.ejb.customer.CustomerControllerHome;
    import com.sun.ebank.ejb.tx.TxHome;
    import com.sun.ebank.ejb.tx.TxControllerHome;
     
 
    /**
     * This helper class fetches EJB home references.
     */
    public final class EJBGetter {
        public static AccountHome getAccountHome() throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.ACCOUNT_EJBHOME);
     
            //return (AccountHome) PortableRemoteObject.narrow(objref, AccountHome.class);
            return (AccountHome)objref;
        }
     
        public static AccountControllerHome getAccountControllerHome()
            throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.ACCOUNT_CONTROLLER_EJBHOME);
     
            return (AccountControllerHome) PortableRemoteObject.narrow(objref,
                AccountControllerHome.class);
        }
     
        public static CustomerHome getCustomerHome() throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.CUSTOMER_EJBHOME);
     
            //return (CustomerHome) PortableRemoteObject.narrow(objref, CustomerHome.class);
            return (CustomerHome)objref;
        }
     
        public static CustomerControllerHome getCustomerControllerHome()
            throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.CUSTOMER_CONTROLLER_EJBHOME);
     
            return (CustomerControllerHome) PortableRemoteObject.narrow(objref,
                CustomerControllerHome.class);
        }
     
        public static TxHome getTxHome() throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.TX_EJBHOME);
     
            //return (TxHome) PortableRemoteObject.narrow(objref, TxHome.class);
            return (TxHome)objref;
        }
     
        public static TxControllerHome getTxControllerHome()
            throws NamingException {
            Context initial = getInitialContext();
            //InitialContext initial = new InitialContext();
            Object objref = initial.lookup(CodedNames.TX_CONTROLLER_EJBHOME);
     
            return (TxControllerHome) PortableRemoteObject.narrow(objref,
                TxControllerHome.class);
        }
        
        private static Context getInitialContext(){
        Context ctx = null;
     
        Properties env = new Properties();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
        env.put(Context.PROVIDER_URL, "localhost:1099");
        env.put(Context.URL_PKG_PREFIXES,
"jboss.naming.org.jnp.interfaces");
        env.put("j2ee.clientName", "bank-client");
    
        try {
    // Get an initial context
    ctx = new InitialContext(env);
    System.out.println("Got context");
    } catch (NamingException ne) {
    // TODO Auto-generated catch block
    System.out.println("Did not get context");
    ne.printStackTrace();
    }
    
    return ctx;
        }
    }

but when I try it, the first call to the session bean works ok, but from the ejbCreate of this session bean I cannot call the entities beans. The system throws an exception,

java.rmi.ServerException: EJBException:; nested exception is:
javax.ejb.EJBException: ejbCreate: comp not bound
at org.jboss.ejb.plugins.LogInterceptor.handleException(LogInterceptor.java:365)
at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:136)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:107)
at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:637)
at org.jboss.ejb.Container.invoke(Container.java:981)
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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.invocation.unified.server.UnifiedInvoker.invoke(UnifiedInvoker.java:231)
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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:201)
at $Proxy16.invoke(Unknown Source)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:769)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:573)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:373)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:166)
Caused by: javax.ejb.EJBException: ejbCreate: comp not bound
at com.sun.ebank.ejb.customer.CustomerControllerBean.ejbCreate(CustomerControllerBean.java:280)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.ejb.StatefulSessionContainer.createSession(StatefulSessionContainer.java:278)
at org.jboss.ejb.StatefulSessionContainer.createHome(StatefulSessionContainer.java:337)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invokeHome(StatefulSessionContainer.java:549)
at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:145)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:189)
at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:56)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:125)
at org.jboss.ejb.plugins.AbstractTxInterceptorBMT.invokeNext(AbstractTxInterceptorBMT.java:173)
at org.jboss.ejb.plugins.TxInterceptorBMT.invokeHome(TxInterceptorBMT.java:71)
at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invokeHome(StatefulSessionInstanceInterceptor.java:143)
at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:132)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:107)
at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:637)
at org.jboss.ejb.Container.invoke(Container.java:981)
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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.invocation.unified.server.UnifiedInvoker.invoke(UnifiedInvoker.java:231)
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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:201)
at $Proxy16.invoke(Unknown Source)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:769)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:573)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:373)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:166)
at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:163)
at org.jboss.remoting.Client.invoke(Client.java:1634)
at org.jboss.remoting.Client.invoke(Client.java:548)
at org.jboss.invocation.unified.interfaces.UnifiedInvokerProxy.invoke(UnifiedInvokerProxy.java:183)
at org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:365)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:197)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:61)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:70)
at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:184)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:100)
at $Proxy0.create(Unknown Source)
at com.sun.ebank.appclient.DataModel.<init>(DataModel.java:127)
at com.sun.ebank.appclient.EventHandle.<init>(EventHandle.java:51)
at com.sun.ebank.appclient.BankAdmin.main(BankAdmin.java:587)

This is in case I name the entities "java:comp/env/ejb/myEJB" because if I just name the ejb something like myEJB, the exception should be

java.rmi.ServerException: EJBException:; nested exception is: 
javax.ejb.EJBException: ejbCreate: myEJB not bound
at etc...

The question is that the entities interfaces are locals so I do not know the way to call them.

Any help, please?

Thank you,
Jose Alvarez de Lara

[Jose Alvarez de Lara]

Hi,

I have solved my problems with the JNDI and the desktop client works ok.
But I have no idea of how the web client works. I have been googling and I have discovered a new class ContextListener that I do not know what is its function in the web app.

Please, help.
Jose Alvarez de Lara

[Jaikiran Pai]

Originally posted by Jose Alvarez de Lara:


I have solved my problems with the JNDI and the desktop client works ok.
But I have no idea of how the web client works. I have been googling and I have discovered a new class ContextListener that I do not know what is its function in the web app.

Can you please provide more details about what exception you are running into? I believe you fixed your earlier JNDI exception, didn't you? If not, let us know - it's just a case of incorrect JNDI name being used for the lookup.

[Jose Alvarez de Lara]

Thank you for your interesting.

I have got the problem. It is in the class DefinitionTag that extends SimpleTagSupport. In the method,

public void doTag() {
        try {
            getJspBody()
                .invoke(null);
 
            Definition definition = new Definition();
            PageContext context = (PageContext) getJspContext();
            setScreen(screenId);
            ArrayList params = (ArrayList) screens.get(this.screenId);
            Iterator ir = null;
 
            if (params != null) {
                ir = params.iterator();
                
                int cont = 0;
                while (ir.hasNext()){
                    definition.setParam((Parameter) ir.next());
                    cont ++;
                }
                Debug.println("DefinitionTag: params defined: " + cont);
                
                // put the definition in the page context
                context.setAttribute(definitionName, definition,
                    PageContext.APPLICATION_SCOPE);
            } else {
                Debug.println("DefinitionTag: params are not defined.");
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

the line ArrayList params = (ArrayList) screens.get(this.screenId); returns null, so the rest of the code

if (params != null) {
                ir = params.iterator();
                
                int cont = 0;
                while (ir.hasNext()){
                    definition.setParam((Parameter) ir.next());
                    cont ++;
                }
                Debug.println("DefinitionTag: params defined: " + cont);
                
                // put the definition in the page context
                context.setAttribute(definitionName, definition,
                    PageContext.APPLICATION_SCOPE);
            } else {
                Debug.println("DefinitionTag: params are not defined.");
            }

returns on the console the message: "DefinitionTag: params are not defined."

And it is because the value of this.screenId is,

"${requestScope['javax.servlet.forward.servlet_path']}"

that belong to screendefinitions.jspf as follow,

<%@ taglib uri="SimpleTagLibrary" prefix="tt" %>
<tt:definition name="bank" screen="${requestScope['javax.servlet.forward.servlet_path']}">
  <tt:screen screenId="/main">
    <tt:parameter name="title" value="Duke's Bank" direct="true"/>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/main.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/transferAck">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleTransferSucceeded"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/transferAck.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/transferFunds">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleTransferFunds"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/transferFunds.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/atmAck">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleWDSucceeded"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/atmAck.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/atm">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleWD"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/atm.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/accountHist">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleAccountHistory"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/accountHist.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/accountList">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleAccountList"/>
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
    <tt:parameter name="body" value="/accountList.jsp" direct="false"/>
  </tt:screen>
  
  <tt:screen screenId="/logoff">
    <tt:parameter name="title" direct="true">
      <jsp:attribute name="value" >
        <fmt:message key="TitleLogoff" />
      </jsp:attribute>
    </tt:parameter>
    <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
    <tt:parameter name="links" value="/template/nolinks.jsp" direct="false"/>
    <tt:parameter name="body" value="/logoff.jsp" direct="false"/>
  </tt:screen>
</tt:definition>

I think the value might to be "/main", "/transferFunds", etc...
and this is my problem.

Will you help me?

Best regards,
Jose Alvarez de Lara