Problem in creating CMP Entity Bean - Pls Help

Question

I am trying to build one simple project having jsps to get connected to CMP Entity Bean.
But while deploying I am getting the following error...
Nov 15, 2004 10:59:09... Info: End of log messages of the target system.
Nov 15, 2004 10:59:09... Info: ***** End of SAP J2EE Engine Deployment (J2EE Application) *****
Nov 15, 2004 10:59:09... Error: Execution of deployment action for "EntityCMPAppln" aborted:
Caught exception during application deployment from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Error occurred while starting application bcone.com/EntityCMPAppln and wait.
Reason: Complex error : server ID 6155350:Application bcone.com/EntityCMPAppln cannot be started, because it has hard reference to resource CONFIG_DB with type javax.sql.DataSource, but it is not active on the server.
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Nov 15, 2004 10:59:09... Error: Deployment NOT successful for EntityCMPAppln
Nov 15, 2004 10:59:09... Info: SDM configuration: Do not automatically start/stop J2EE Engine. Do not restore state of J2EE Engine now.
Nov 15, 2004 10:59:09... Error: -
At least one of the Deployments failed -
Nov 15, 2004 11:05:16... Info: Request for Logon as admin accepted
===========================================
Nov 15, 2004 11:05:08... Info: =   Starting to execute command 'remotegui'   =
Nov 15, 2004 11:05:08... Info: ===============================================
Nov 15, 2004 11:05:10... Info: SDM started successfully.
Please tell me how to activate the CONFIG_DB reference in database. Or what Extra I have to do to run this example.
Regards,
Vivek Ojha

Answer 1

Dear Benny,
The code of the required files is pasted below....
Application.XML
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
                             "http://java.sun.com/dtd/application_1_3.dtd">
<application>
    <display-name>EntityCMPAppln</display-name>
    <description>EAR description</description>
    <module>
        <ejb>EntityCMPEjb.jar</ejb>
    </module>
    <module>
        <web>
            <web-uri>EntityCMPWeb.war</web-uri>
            <context-root>/student</context-root>
        </web>
    </module>
</application>
Application-j2ee-engine.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application-j2ee-engine SYSTEM "application-j2ee-engine.dtd">
<application-j2ee-engine>
     <provider-name>bcone.com</provider-name>
     <fail-over-enable
          mode="disable"/>
</application-j2ee-engine>
data-source-aliases.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE data-source-aliases SYSTEM "data-source-aliases.dtd">
<data-source-aliases>
     <aliases>
          <data-source-name>${com.sap.datasource.default}</data-source-name>
          <alias>STUDENTDB</alias>
     </aliases>
</data-source-aliases>
ejb-j2ee-engine.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-j2ee-engine SYSTEM "ejb-j2ee-engine.dtd">
<ejb-j2ee-engine>
     <enterprise-beans>
          <enterprise-bean>
               <ejb-name>StudentBean</ejb-name>
               <resource-ref>
                    <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                    <res-link>STUDENTDB</res-link>
               </resource-ref>
               <entity-props/>
          </enterprise-bean>
     </enterprise-beans>
</ejb-j2ee-engine>
ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
     <description>EJB JAR description</description>
     <display-name>EJB JAR</display-name>
     <enterprise-beans>
          <entity>
               <ejb-name>StudentBean</ejb-name>
               <home>com.bcone.ejb.StudentHome</home>
               <remote>com.bcone.ejb.Student</remote>
               <ejb-class>com.bcone.ejb.StudentBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.String</prim-key-class>
               <reentrant>False</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>StudentBean</abstract-schema-name>
               <cmp-field>
                    <field-name>studentId</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>lname</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>standard</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>fyear</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>fname</field-name>
               </cmp-field>
               <primkey-field>studentId</primkey-field>
               <resource-ref>
                    <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                    <res-type>javax.sql.DataSource</res-type>
                    <res-auth>Container</res-auth>
               </resource-ref>
          </entity>
     </enterprise-beans>
</ejb-jar>
persistent.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE persistent-ejb-map SYSTEM "persistent.dtd">
<persistent-ejb-map>
     <locking
          type="Table"/>
     <db-properties>
          <data-source-name>CONFIG_DB</data-source-name>
          <database-vendor
               name="SAPDB"/>
     </db-properties>
     <entity-beans>
          <entity-bean>
               <ejb-name>StudentBean</ejb-name>
               <table-name>TMP_STUDENTNEW</table-name>
               <field-map
                    key-type="PrimaryKey">
                    <field-name>studentId</field-name>
                    <column>
                         <column-name>STUDENTID</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>lname</field-name>
                    <column>
                         <column-name>LNAME</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>standard</field-name>
                    <column>
                         <column-name>STANDARD</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>fyear</field-name>
                    <column>
                         <column-name>FYEAR</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>fname</field-name>
                    <column>
                         <column-name>FNAME</column-name>
                    </column>
               </field-map>
          </entity-bean>
     </entity-beans>
     <relationships/>
</persistent-ejb-map>
StudentBean.java
package com.bcone.ejb;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
import javax.ejb.CreateException;
@abstractSchemaName StudentBean
@cmpVersion 2.x
@ejbHome <{com.bcone.ejb.StudentHome}>
@ejbPrimaryKey <{java.lang.String}>
@ejbRemote <{com.bcone.ejb.Student}>
@hasSimplePK true
public abstract class StudentBean implements EntityBean {
     public void ejbLoad() {
     public void ejbStore() {
     public void ejbRemove() throws RemoveException {
     public void ejbActivate() {
     public void ejbPassivate() {
     public void setEntityContext(EntityContext context) {
          myContext = context;
     public void unsetEntityContext() {
          myContext = null;
     private EntityContext myContext;
@primKeyField
     public abstract String getStudentId();
     public abstract void setStudentId(String studentId);
     public abstract String getLname();
     public abstract void setLname(String lname);
     public abstract String getFname();
     public abstract void setFname(String fname);
     public abstract String getStandard();
     public abstract void setStandard(String standard);
     public abstract String getFyear();
     public abstract void setFyear(String fyear);
Create Method.
     public String ejbCreate(
          String studentId,
          String fname,
          String lname,
          String standard,
          String fyear)
          throws CreateException {
          setStudentId(studentId);
          setFname(fname);
          setLname(lname);
          setStandard(standard);
          setFyear(fyear);
          return null;
Post Create Method.
     public void ejbPostCreate(
          String studentId,
          String fname,
          String lname,
          String standard,
          String fyear) {
          // TODO : Implement
StudentData.java
Created on Nov 14, 2004
To change the template for this generated file go to
Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
package com.bcone.data;
@author Administrator
To change the template for this generated type comment go to
Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
public class StudentData {
     private String studentId;
     private String fname;
     private String lname;
     private String standard;
     private String fyear;
@return
     public String getFname() {
          return fname;
@return
     public String getFyear() {
          return fyear;
@return
     public String getLname() {
          return lname;
@return
     public String getStandard() {
          return standard;
@return
     public String getStudentId() {
          return studentId;
@param string
     public void setFname(String string) {
          fname = string;
@param string
     public void setFyear(String string) {
          fyear = string;
@param string
     public void setLname(String string) {
          lname = string;
@param string
     public void setStandard(String string) {
          standard = string;
@param string
     public void setStudentId(String string) {
          studentId = string;
student.jsp
<%@ page language="java" %>
<html>
     <head>
          <title>
               Title
          </title>
     </head>
     <body>
          <form method="POST" action="WEBBOT-SELF" name="Student" onSubmit="">
  <!--webbot bot="SaveResults" startspan U-File="_private/form_results.txt"
  S-Format="TEXT/CSV" S-Label-Fields="TRUE" ><input TYPE="hidden" NAME="VTI-GROUP" VALUE="0"><!webbot
  bot="SaveResults" endspan -->
  <br>
  <a href="/student/manageStudent.jsp?action=add" method="post"> Create </a>   
  <a href="/student/manageStudent.jsp?action=modify" method="post"> Modify </a>   
  <a href="/student/manageStudent.jsp?action=delete" method="post"> Delete </a>
  <br><br>
  <table border="1" width="32%">
    <tr>
      <td width="39%">Student ID </td>
      <td width="61%"><input type="text" name="studentId" size="20"></td>
    </tr>
    <tr>
      <td width="39%">First Name</td>
      <td width="61%"><input type="text" name="fname" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Last Name</td>
      <td width="61%"><input type="text" name="lname" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Standard</td>
      <td width="61%"><input type="text" name="standard" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Fiscal Year</td>
      <td width="61%"><input type="text" name="fyear" size="20"></td>
    </tr>
    <tr>
      <td width="39%" align="center"><input type="submit" value="Submit" name="submit"></td>
      <td width="61%" align="center"><input type="reset" value="Reset" name="reset"></td>
    </tr>
  </table>
</form>
     </body>
</html>
mamageStudent.jsp
<%@ page language="java"
import="javax.naming.,java.sql.,javax.sql,com.bcone.ejb."
%>
<html>
     <head>
          <title>
               Manage Student
          </title>
     </head>
     <body>
          <h1>
          </h1>
<jsp:useBean id="stu" class="com.bcone.data.StudentData" ></jsp:useBean>
<jsp:setProperty name="stu" property="*" />
<%
try {
     InitialContext ctx = new InitialContext();
     StudentHome home = (StudentHome) ctx.lookup("java:comp/env/StudentBean");
     String str = request.getParameter("action");
     if("action".equals(str)) {
          Student rem = home.create(remote.setFname(stu.getStudentId(),stu.getFname(),stu.getLname(),stu.getStandard(),stu.getFyear());
          out.println(stu.getStudentId() + "Student Created");
     } else if ("modify".equals(str)) {
          Student remote  = home.findByPrimaryKey(stu.getStudentId());
          remote.setFname(stu.getFname());
          remote.setFname(stu.getLname());
          remote.setFname(stu.getStandard());
          remote.setFname(stu.getFyear());
          out.println(stu.getStudentId() + "Student modified");
     } else if ("delete".equals(str)) {
          Student stu1  = home.findByPrimaryKey(stu.getStudentId());
          stu1.remove();
          out.println(stu.getStudentId() + "Student deleted");
} catch (Exception e) {
     out.println("Exception e"+e.toString());
%>
     </body>
</html>
Regards,
Vivek Ojha