EJB3.0 simple entity bean for customer example...

Can anyone provide a simple step by step instruction on how to start my application of a customer entity bean. like i could add / delete an entry to mySQL DB, i will use Sun as my appserver. im a newbie to ejb. i want to start with that CUSTOMER bean can anybody help pls ? thx! tata-yang

hello batzee i already have my appserver running
and found out that he place my EJBSample under Enterprise Application.
and with these modules inside:
-EJBsampleSun-ejb.jar EJBModule
-EJBsampleSun-war.war WebModule
my appserver has:
EJBsampleSun true ${com.sun.aas.instanceRoot}/applications/j2ee-apps/EJBsampleSun Redeploy
inside my application:
1. ejbsamplesun-ejb/src/conf/persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="EJBsampleSun-ejbPU" transaction-type="JTA">
<provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>
<jta-data-source>jdbc/mySample_dbo</jta-data-source> //question: i have db in mysql named mySample_dbo with customer as my table did i declare it right?
<properties>
</properties>
</persistence-unit>
</persistence>
================
2. ejbsamplesun-ejb/src/java/ph/icomm/customer.class
package myejb.ph;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.*;
@Entity
@Table(name="Customer")
public class Customer implements Serializable {
private int id;
private String name;
private String email;
private String phone;
@Id
@Column(name="ID")
public int getId() {
return id;
public void setId(int pk) {
id = pk;
@Column(name="Name")
public String getName() {
return name;
public void setName(String n) {
name = n;
@Column(name="Email")
public String getEmail() {
return email;
public void setEmail(String e) {
email = e;
@Column(name="Phone")
public String getPhone() {
return phone;
public void setPhone(String p) {
name = p;
================
3. ejbsamplesun-war/src/java/web/postcustomer.class
// and here is my servlet
//simply trying to fetch the data in my customer table with ID = 11
package web;
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import ph.icomm.Customer;
import web.PostCustomer;
public class PostCustomer extends HttpServlet {
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
/* TODO output your page here*/
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet PostCustomer</title>");
out.println("</head>");
out.println("<body>");
try {
Customer pCustomer = new Customer();
pCustomer.setId(new Integer("11"));
out.println("Customer Name is"+pCustomer.getName());
out.println("<br>");
out.println("Customer Id is:"+pCustomer.getId());
out.println("<br>");
out.println("Customer Email is:"+pCustomer.getEmail());
out.println("<br>");
out.println("Customer Phone is:"+pCustomer.getPhone());
} catch(Exception e) {
System.out.println("I am inside Exception");
out.println("<h1>Servlet PostCustomer at " + request.getContextPath() + "</h1>");
out.println("</body>");
out.println("</html>");
out.close();
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
/** Returns a short description of the servlet.
public String getServletInfo() {
return "Short description";
// </editor-fold>
Now, is this complete ejb3.0 already? coz if ill try to RUN this project it give this error:
Deploying application in domain failed; Deployment Error -- null
C:\Inetpub\wwwroot\myfolder\_Project\EJBsampleSun\EJBsampleSun-ejb\nbproject\build-impl.xml:312: Deployment error:
The module has not been deployed.
See the server log for details.
BUILD FAILED (total time: 1 second)
This is quite a long post but have to make sure ill get your kind help and assistance. Thanks!
tata-yang

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java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
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at javax.rmi.CORBA.Util.mapSystemException(Util.java:65)
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tuitorial examples)
Error: [ ejb/SimpleTest1 ] class [ Test1Home ] cannot be found within this jar [ app-client-ic.jar ].
For [ app-client-ic.jar ]
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create.sql
drop table test1;
create table test1
(id varchar(3) constraint pk_test1 primary key,
firstname varchar(24) );
exit;
Test!Bean.java
import java.sql.*;
import javax.sql.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;
public class Test1Bean implements EntityBean {
private final static String dbName = "java:comp/env/jdbc/Test1DB";
private String id;
private String firstName;
private EntityContext context;
private Connection con;
public String getFirstName() {
return firstName;
public String ejbCreate(String id, String firstName) throws CreateException {
try {
insertRow(id, firstName);
} catch (Exception ex) {
throw new EJBException("ejbCreate: " + ex.getMessage());
this.id = id;
this.firstName = firstName;
return id;
public String ejbFindByPrimaryKey(String primaryKey)
throws FinderException {
boolean result;
try {
result = selectByPrimaryKey(primaryKey);
} catch (Exception ex) {
throw new EJBException("ejbFindByPrimaryKey: " + ex.getMessage());
if (result) {
return primaryKey;
} else {
throw new ObjectNotFoundException("Row for id " + primaryKey +
" not found.");
public void ejbRemove() {
try {
deleteRow(id);
} catch (Exception ex) {
throw new EJBException("ejbRemove: " + ex.getMessage());
public void setEntityContext(EntityContext context) {
this.context = context;
public void unsetEntityContext() {
public void ejbActivate() {
id = (String) context.getPrimaryKey();
public void ejbPassivate() {
id = null;
public void ejbLoad() {
try {
loadRow();
} catch (Exception ex) {
throw new EJBException("ejbLoad: " + ex.getMessage());
public void ejbStore() {
try {
storeRow();
} catch (Exception ex) {
throw new EJBException("ejbStore: " + ex.getMessage());
public void ejbPostCreate(String id, String firstName) {
/*********************** Database Routines *************************/
private void makeConnection() {
try {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup(dbName);
con = ds.getConnection();
} catch (Exception ex) {
throw new EJBException("Unable to connect to database. " +
ex.getMessage());
private void releaseConnection() {
try {
con.close();
} catch (SQLException ex) {
throw new EJBException("releaseConnection: " + ex.getMessage());
private void insertRow(String id, String firstName) throws SQLException {
makeConnection();
String insertStatement =
"insert into test1 values ( ? , ? )";
PreparedStatement prepStmt = con.prepareStatement(insertStatement);
prepStmt.setString(1, id);
prepStmt.setString(2, firstName);
prepStmt.executeUpdate();
prepStmt.close();
releaseConnection();
private void deleteRow(String id) throws SQLException {
makeConnection();
String deleteStatement = "delete from test1 where id = ? ";
PreparedStatement prepStmt = con.prepareStatement(deleteStatement);
prepStmt.setString(1, id);
prepStmt.executeUpdate();
prepStmt.close();
releaseConnection();
private boolean selectByPrimaryKey(String primaryKey)
throws SQLException {
makeConnection();
String selectStatement =
"select id " + "from test1 where id = ? ";
PreparedStatement prepStmt = con.prepareStatement(selectStatement);
prepStmt.setString(1, primaryKey);
ResultSet rs = prepStmt.executeQuery();
boolean result = rs.next();
prepStmt.close();
releaseConnection();
return result;
private void loadRow() throws SQLException {
makeConnection();
String selectStatement =
"select firstname from test1 where id = ? ";
PreparedStatement prepStmt = con.prepareStatement(selectStatement);
prepStmt.setString(1, this.id);
ResultSet rs = prepStmt.executeQuery();
if (rs.next()) {
this.firstName = rs.getString(1);
prepStmt.close();
} else {
prepStmt.close();
throw new NoSuchEntityException("Row for id " + id +
" not found in database.");
releaseConnection();
private void storeRow() throws SQLException {
makeConnection();
String updateStatement =
"update test1 set firstname = ? where id = ?";
PreparedStatement prepStmt = con.prepareStatement(updateStatement);
prepStmt.setString(1, firstName);
prepStmt.setString(4, id);
int rowCount = prepStmt.executeUpdate();
prepStmt.close();
if (rowCount == 0) {
throw new EJBException("Storing row for id " + id + " failed.");
releaseConnection();
// Test1Bean
Test1Client
import java.util.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
public class Test1Client {
public static void main(String[] args) {
try {
Context initial = new InitialContext();
Object objref =
initial.lookup("java:comp/env/ejb/SimpleTest1");
Test1Home home =
(Test1Home) PortableRemoteObject.narrow(objref,
Test1Home.class);
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home.create("123", "Duke");
duke = home.findByPrimaryKey("123");
System.out.println(duke.getFirstName());
System.exit(0);
catch (Exception ex)
System.err.println("Caught an exception.");
ex.printStackTrace();
Test1Home.jav
import java.rmi.RemoteException;
import javax.ejb.*;
public interface Test1Home extends EJBHome {
public Test1 create(String id, String firstName) throws RemoteException, CreateException;
public Test1 findByPrimaryKey(String id)
throws FinderException, RemoteException;
Test1.java
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
public interface Test1 extends EJBObject {
public String getFirstName() throws RemoteException;
application.xml (Test1App.ear)
<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://java.sun.com/xml/ns/j2ee" version="1.4" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/application_1_4.xsd">
<description>Application description</description>
<display-name>Test1App</display-name>
<module>
<java>app-client-ic.jar</java>
</module>
<module>
<ejb>ejb-jar-ic.jar</ejb>
</module>
</application>
sun-application.xml (Test1App.ear)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-application PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 8.0 J2EE Application 1.4//EN" "http://www.sun.com/software/appserver/dtds/sun-application_1_4-0.dtd">
<sun-application>
<pass-by-reference>false</pass-by-reference>
</sun-application>
ejb-jar.xml (in ejb-jar-ic.jar)
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee" version="2.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd">
<display-name>Test1JAR</display-name>
<enterprise-beans>
<entity>
<ejb-name>Test1Bean</ejb-name>
<home>Test1Home</home>
<remote>Test1</remote>
<ejb-class>Test1Bean</ejb-class>
<persistence-type>Bean</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>true</reentrant>
<resource-ref>
<res-ref-name>jdbc/Test1DB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
<security-identity>
<use-caller-identity/>
</security-identity>
</entity>
</enterprise-beans>
<assembly-descriptor>
<method-permission>
<unchecked/>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>remove</method-name>
<method-params>
<method-param>java.lang.Object</method-param>
</method-params>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>getHomeHandle</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>isIdentical</method-name>
<method-params>
<method-param>javax.ejb.EJBObject</method-param>
</method-params>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>getFirstName</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>findByPrimaryKey</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>remove</method-name>
<method-params>
<method-param>javax.ejb.Handle</method-param>
</method-params>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>getHandle</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>create</method-name>
<method-params>
<method-param>java.lang.String</method-param>
<method-param>java.lang.String</method-param>
</method-params>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Home</method-intf>
<method-name>getEJBMetaData</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>getPrimaryKey</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>remove</method-name>
</method>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>getEJBHome</method-name>
</method>
</method-permission>
<container-transaction>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>remove</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
<container-transaction>
<method>
<ejb-name>Test1Bean</ejb-name>
<method-intf>Remote</method-intf>
<method-name>getFirstName</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
sun-ejb-jar.xml (in ejb-jar-ic.jar )
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 8.0 EJB 2.1//EN" "http://www.sun.com/software/appserver/dtds/sun-ejb-jar_2_1-0.dtd">
<sun-ejb-jar>
<enterprise-beans>
<name>Test1JAR</name>
<ejb>
<ejb-name>Test1Bean</ejb-name>
<jndi-name>Test1Bean</jndi-name>
<resource-ref>
<res-ref-name>jdbc/Test1DB</res-ref-name>
<jndi-name>jdbc/ejbTutorialDB</jndi-name>
</resource-ref>
</ejb>
</enterprise-beans>
</sun-ejb-jar>
application-client.xml ( in app-client-ic.jar)
<?xml version="1.0" encoding="UTF-8"?>
<application-client xmlns="http://java.sun.com/xml/ns/j2ee" version="1.4" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/application-client_1_4.xsd"><display-name>Test1Client</display-name>
<ejb-ref>
<ejb-ref-name>ejb/SimpleTest1</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<home>Test1Home</home>
<remote>Test1</remote>
</ejb-ref>
</application-client>
sun-application-client.xml ( in app-client-ic.jar)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-application-client PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 8.0 Application Client 1.4//EN" "http://www.sun.com/software/appserver/dtds/sun-application-client_1_4-0.dtd">
<sun-application-client>
<ejb-ref>
<ejb-ref-name>ejb/SimpleTest1</ejb-ref-name>
<jndi-name>Test1Bean</jndi-name>
</ejb-ref>
</sun-application-client>
This is adapted from the Savings Account example. I couldn't get it to work either
from the source provided though it did work with the provided ear. I have been
comparing the difference in setting but can see anything.
I have been able to build and deploy all the other examples in the tutorial but I am somehow
stuck on ejbs.
Help would be much appreciated.
cheers,
paul

Just had a look at the client jar. The one generated by the Savings Account provided ear has got a shorter ejb-jar.xml. It doesn't have the functions specified like the one in its ear file.
Another difference thet the Manifest.mf files for my client jar do not have as many paths specified
as my test client jar. Don't know why. I am suspecting that maybe there is a slight configuration problem in my j2ee setup. Though I am not sure waht or what to look for. I hope this little bit of
extra info helps.
cheers,
paul.

How to design a EJB session beans for a example ERP case study?

Hello to everyone,
We have a huge dilemma on how to organize our Beans to support the use case in an information system such as ERP.
In the use case user after logded in selecting one of the organization and specific sector that works for. (Background logic check relations between user and organizations, user rights, organization states ets.) After the selection of organizations and sectors, users all the time working with these parameters calling different modules of ERP systems and different activities.
According to the logic of things, to keep certain parameters we should use a Stateful Beans.
On the other hand, becouse of performance reasons and our need to open a business logic with a service (REST) we woud like to use Stateless Beans. But it is not acceptable to us every time we send the selected organization and the sector.
It would be ideal if they could are using an Stateless Beans and that they can somehow to access something like "SessionContext in Web applications", where the logged user kept details of the selected parameters.
We studied many tutorials, but all are based on simple examples, which do not cover our case.
Are there any best practice recommendations on how to solve the problems of a similar type?

user13404668 wrote:
But it is not acceptable to us every time we send the selected organization and the sector.
Why is that ? Its a perfectly valid pattern when using SLSB.
regards,
ram.

CMP Entity Beans with custom finders an primary key class

Hi everybody.
I've got a Entity with a primary key class and a custom finder. I've defined
the finder into the xml file like iPlanet's documentation say, but, when I
try to run the aplication I get the following error:
Exception: SERVLET-run_failed: Failed in running template:
/PruebaGI/PruebaGI/pruebagi.jsp, java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
Exception Stack Trace:
java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
at
com.netscape.server.servlet.servletrunner.AppInfo.popWebAppDescriptor(Unknow
n Source)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
at com.netscape.server.servlet.servletrunner.ServletRunner.callJSP(Unknown
Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callJsp
Compiler(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
RestrictOutput(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformRequestDispatcher.forward(U
nknown Source)
at com.netscape.server.servlet.jsp.JSPRunner.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
at com.netscape.server.servlet.servletrunner.ServletRunner.execute(Unknown
Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at java.lang.Thread.run(Thread.java:479).
Could anybody help my? I need to resolve this question quickly.
Thx
..

Hi Juan,
Sounds like you've defined either a java.lang.String where it should have
said Java.util.Vector (or the other way around) in the part of the
deployment descriptor that defines your custom finder method parameter.
Regards,
Raymond
"Juan Jos� Ayuso" <[email protected]> wrote in message
news:[email protected]...
Hi everybody.
I've got a Entity with a primary key class and a custom finder. I'vedefined
the finder into the xml file like iPlanet's documentation say, but, when I
try to run the aplication I get the following error:
Exception: SERVLET-run_failed: Failed in running template:
/PruebaGI/PruebaGI/pruebagi.jsp, java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
Exception Stack Trace:
java.lang.ClassCastException:
com.netscape.server.deployment.SessionBeanDescriptor
at
com.netscape.server.servlet.servletrunner.AppInfo.popWebAppDescriptor(Unknow
n Source)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
atcom.netscape.server.servlet.servletrunner.ServletRunner.callJSP(Unknown
Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callJsp
Compiler(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformHttpServletResponse.callUri
RestrictOutput(Unknown Source)
at
com.netscape.server.servlet.platformhttp.PlatformRequestDispatcher.forward(U
nknown Source)
at com.netscape.server.servlet.jsp.JSPRunner.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at com.netscape.server.servlet.servletrunner.ServletInfo.service(Unknown
Source)
atcom.netscape.server.servlet.servletrunner.ServletRunner.execute(Unknown
Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.applogic.AppLogic.execute(Unknown Source)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at java.lang.Thread.run(Thread.java:479).
Could anybody help my? I need to resolve this question quickly.
Thx

Global Variable in entity beans

Dear Friends,
For example let us think that we have an entity bean for Customer.
and we created an instance of that bean for customer A and then for customer B.
So will the global variables in Customer bean be shared across Customer A and Customer B or will there be seperate instances for both Customers.
Thanking You,
Chamal.

Your concepts seem to be a little messed up.
For entity bean, remember the following:
1. each object/instance of entity bean represents a record in a database
2. when a client looks up an entity bean (typcially by using findByPrimaryKey method on home object), the record from database is searched and its values are stored in Entity Beans variables (this is probably what you mean by Global Variable. But thats an incorrect terminology in Java/J2EE. Class attribute is the correct word)
3. In step 2, you fetched a record and that record is represented by a java object, which is nothing but entity bean.
4. Now if you make changes to this java object, these changes will persist in the database. That is the essence of entity bean.
5. If you use the home object's findByPrimaryKey method and look for the same record, no new object will be created. The 2 remote objects will point to the same entity bean on the server.
6. If yo use the home object's findByPrimaryKey method and look for another record/customer, a new object will be created on the server. This new entity bean will map to the new record.
Note taht the attribtues of CustomerA and customerB will never be shared.
hope that helps

Can't deploy Simple 2.0 CMP Entity Bean into Sun One Server 7

Dear all:
I use JBuilder9 + SunOne Plug-in to
build a Simple Entity Bean, but I can't
deploy it into SunOne 7 Server that return
error message:
Deployment Error -- Error while running ejbc -- Fatal Error from EJB Compiler -- -- Error while processing CMP beans.
But I use JBuilder9 + JBoss 3.x Plug-in
that corrent run on JBoss 3.2 RC
All code are generated by JBuilder9 EJB Designer
and only have PK finder.
Our deploy description flile are:
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>
<enterprise-beans>
<entity>
<display-name>Enterprise1</display-name>
<ejb-name>Enterprise1</ejb-name>
<home>untitled1.Enterprise1RemoteHome</home>
<remote>untitled1.Enterprise1Remote</remote>
<local-home>untitled1.Enterprise1Home</local-home>
<local>untitled1.Enterprise1</local>
<ejb-class>untitled1.Enterprise1Bean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>untitled1.Enterprise1PK</prim-key-class>
<reentrant>False</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>Enterprise1</abstract-schema-name>
<cmp-field>
<field-name>inDate</field-name>
</cmp-field>
<cmp-field>
<field-name>sndSeq</field-name>
</cmp-field>
<cmp-field>
<field-name>msgSnd</field-name>
</cmp-field>
<cmp-field>
<field-name>msgRcv</field-name>
</cmp-field>
<cmp-field>
<field-name>brkId</field-name>
</cmp-field>
</entity>
</enterprise-beans>
<assembly-descriptor>
<container-transaction>
<method>
<ejb-name>Enterprise1</ejb-name>
<method-name>*</method-name>
</method>
<trans-attribute>Required</trans-attribute>
</container-transaction>
</assembly-descriptor>
</ejb-jar>
=================================
sun-ejb-jar.xml=====================
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Sun ONE Application Server 7.0 EJB 2.0//EN' 'http://www.sun.com/software/sunone/appserver/dtds/sun-ejb-jar_2_0-0.dtd'>
<sun-ejb-jar>
<enterprise-beans>
<ejb>
<ejb-name>Enterprise1</ejb-name>
<jndi-name>Enterprise1Remote</jndi-name>
</ejb>
<pm-descriptors>
<pm-descriptor>
<pm-identifier>IPLANET</pm-identifier>
<pm-version>1.0</pm-version>
<pm-class-generator>com.iplanet.ias.persistence.internal.ejb.ejbc.JDOCodeGenerator</pm-class-generator>
<pm-mapping-factory>com.iplanet.ias.cmp.NullFactory</pm-mapping-factory>
</pm-descriptor>
<pm-inuse>
<pm-identifier>IPLANET</pm-identifier>
<pm-version>1.0</pm-version>
</pm-inuse>
</pm-descriptors>
<cmp-resource>
<jndi-name>jdo/sample-cmp</jndi-name>
<default-resource-principal>
<name>mv01</name>
<password>mv01</password>
</default-resource-principal>
</cmp-resource>
</enterprise-beans>
</sun-ejb-jar>
===========================
sun-cmp-mappings.xml===============
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-cmp-mappings PUBLIC '-//Sun Microsystems, Inc.//DTD Sun ONE Application Server 7.0 OR Mapping //EN' 'http://www.sun.com/software/sunone/appserver/dtds/sun-cmp-mapping_1_0.dtd'>
<sun-cmp-mappings>
<sun-cmp-mapping>
<schema>META-INF/mySchema</schema>
<entity-mapping>
<ejb-name>Enterprise1</ejb-name>
<table-name>TSE_MSG_T</table-name>
<cmp-field-mapping>
<field-name>inDate</field-name>
<column-name>INDATE</column-name>
</cmp-field-mapping>
<cmp-field-mapping>
<field-name>sndSeq</field-name>
<column-name>SNDSEQ</column-name>
</cmp-field-mapping>
<cmp-field-mapping>
<field-name>msgSnd</field-name>
<column-name>MSGSND</column-name>
</cmp-field-mapping>
<cmp-field-mapping>
<field-name>msgRcv</field-name>
<column-name>MSGRCV</column-name>
</cmp-field-mapping>
<cmp-field-mapping>
<field-name>brkId</field-name>
<column-name>BRKID</column-name>
</cmp-field-mapping>
</entity-mapping>
</sun-cmp-mapping>
</sun-cmp-mappings>
=========================

I remember getting errors like that. The only thing I see is in the map file. When I
did mine I used TABLENAME.CMPFIELD to map columns to CMP attributes.
TSE_MSG_T.INDATE
TSE_MSG_T.SNDSEQ
for column names in the sun-cmp-mappings.xml file.
For any other errors set the logging for server1 or which one you are using to "finest".
Try the deploy, shut down the server, and when you view the log, start at the bottom
and keep scrolling up to the top of each stack trace and you should get a more
specific error explanation at about the 3rd or 4th stack trace.

EJB Entity beans ,JDBC Stored procedures

Hi ,
I am new to EJB and i have some general questions
---Every table in an existing database is an entity bean for my application?
--- how do i define the queries in the entity bean ? (With PreparedStatement ?)
---The persistent fields,the ejbmethods,constructors, the table relationships, the prepared statements and stored procedures, are defined in the entity beans ?
--- how do i define the primary Keys in an Entity Bean !!! I will use EJB 2.1 and BMP
thanks in advance ...

Sandeep...
I have dblinks going all over the place. What you are talking about is a clustered or distributed database. That is the future (or present ) of large databases. My code is set up because an 'architecture' is not yet available in the database itself to support the concepts I've posted to Steve in other threads.
I fully believe that we'll eventually have BC4J ( or something like it ) directly in the database. I fully believe that the database will load balance these across a cluster of databases, within the database structure itself. For example... there is NOTHING to stop the JVM from deciding that it needs to load balance and submit the thread to a remote machine for processing... independent of creating a "middle tier" outside the database.
I believed that client-server model was flawed for most (not all) applications in the 80's. Looking at the "application tier" model I have the same feeling that we're creating an overly complex scheme at the wrong layer... just pushed back one stage so that we have to rewrite everything...
If you go back to the megalithic server design ( or cluster of servers ) with a thin thin front end... just why is the middle tier needed under the scenario I've outlined?
As such, stored procedures/triggers be they in java or pl/sql seems best bet to me... seeing's how a call spec to java or a pl/sql wrapper is transparent to the caller using jdbc or any other future technology.
grin Way outside the scope of the universe today... I see it as inevitable.
null

EJB3.0 simple entity bean for customer example...

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