Please Help

[Gowher Naik]

I am writing Entity bean with CMR having local interfaces.
The employee bean is in relationship with project bean.
The relationship between employee bean and project bean is many to many i.e one employee has many projects and same way one projects has many employee.
I am not able to set relationship so please help me.
The code for employee and project bean is shown below.

//employee bean
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
public abstract class EmpBean implements EntityBean{
public abstract void setEmpId(String empid);//PK
public abstract String getEmpId();
public abstract String getEmpName();
public abstract void setEmpName(String empName);

//CMR
public abstract void setProj(Collection proj);
public abstract Collection getProj();

public String ejbCreate(String empid,String empName)throws CreateException{
setEmpId(empid);
setEmpName(empName);
return null;
}
public void ejbPostCreate(String empid,String empName)throws CreateException{
}

//callback methods
}

//employee local interface
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
public interface LocalEmp extends EJBLocalObject{
public String getEmpId();
public String getEmpName();
}

//employee home interface
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
public interface LocalEmpHome extends EJBLocalHome{
public String create(String empid,String empName)throws CreateException;
public LocalEmp findByPrimaryKey(String empId)throws FinderException;

}

//project bean
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
import javax.rmi.*;
public abstract class ProjBean implements EntityBean{
public abstract void setProjId(String projId);//PK
public abstract String getProjId();
public abstract void setProjName(String projName);
public abstract String getProjName();

//CMR
public abstract void setEmp(Collection emp);
public abstract Collection getEmp();

public String ejbCreate(String projId,String empId,String projName)throws CreateException{
setProjId(projId);
setProjName(projName);
return null;
}
public void ejbPostCreate(String projId,String empId,String projName)throws CreateException{}
//callback methods

}  

//project local interface 
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
public interface LocalProj extends EJBLocalObject{
public String getProjId();
public String getProjName();
}

//project home interface
package empprojpack;
import javax.ejb.*;
import java.util.*;
import javax.naming.*;
public interface LocalProjHome extends EJBLocalHome{
public String ejbCreate(String projId,String empId,String projName)throws CreateException;
public LocalProj findByPrimaryKey(String projId)throws FinderException;

}

Thanks for Help.

[Gowher Naik]

please help me

[Christophe Verré]

Create methods in both local home are not correct. They should be respectively

public LocalEmp create(String empid,String empName)throws CreateException;
and 
public LocalProj create(String projId,String empId,String projName)throws CreateException;

Quote:
An entity bean�s local home interface can define zero or more create<METHOD>(...) methods, one for each way to create an entity object. The arguments of the create methods are typically used to initialize the state of the created entity object. The name of each create method starts with the prefix �create�. The return type of a create<METHOD> method on the local home interface is the entity bean�s local interface.

[Christophe Verré]

Apart from that, could you explain what is not working ? Where do you have difficulties ? The deployment descriptor ?

[Gowher Naik]

i am not able to understand how i will set relationship in ejbPostCreate of
Project bean.
in 1 to 1 and 1 to many examples i used to set relationship in ejbPostCreate method.
I want code that will set relation between Employee bean and Project bean.
I have set relationship in DD successfully.
if i will deploy above code it creates Project table and Employee table but the linking table between Project table and Employee is empty.

Thanks

[Christophe Verré]

I would remove the empId from both ejbCreate and ejbPostCreate.
You can set the relation outside the bean :

// Employee
LocalEmpHome empHome = (LocalEmpHome)ctx.lookup("java:comp/env/ejb/EmployeeBean");
LocalEmp employee = (LocalEmp)empHome.create("EMP1", "kuri");
// Project
LocalProjHome projHome = (LocalProjHome)ctx.lookup("java:comp/env/ejb/ProjectBean");
LocalProj project = (LocalProj)projHome.create("PROJ1", "FirstProject");
 
project.addEmployee(employee);
 
Collection employeeProjects = employee.getProjects();
Iterator it = employeeProjects.iterator();
System.out.println("Employee is in the following projects: ");
while( it.hasNext() ) {
LocalProj proj = (LocalProj)it.next();
System.out.println("Project: " + proj.getProjName());
}

How did you declare the relationship in your deployment descriptor ?
Here is an example. (FacadeSessionBean is a remote stateless session bean where I have put the above code)

<?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>
  <display-name>EjbTest</display-name>
  <enterprise-beans>
    <entity>
      <display-name>ProjBean</display-name>
      <ejb-name>ProjBean</ejb-name>
      <local-home>empprojpack.LocalProjHome</local-home>
      <local>empprojpack.LocalProj</local>
      <ejb-class>empprojpack.ProjBean</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>ProjBean</abstract-schema-name>
      <cmp-field>
        <description>no description</description>
        <field-name>projName</field-name>
      </cmp-field>
      <cmp-field>
        <description>no description</description>
        <field-name>projId</field-name>
      </cmp-field>
      <primkey-field>projId</primkey-field>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </entity>
    <entity>
      <display-name>EmpBean</display-name>
      <ejb-name>EmpBean</ejb-name>
      <local-home>empprojpack.LocalEmpHome</local-home>
      <local>empprojpack.LocalEmp</local>
      <ejb-class>empprojpack.EmpBean</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>EmpBean</abstract-schema-name>
      <cmp-field>
        <description>no description</description>
        <field-name>empName</field-name>
      </cmp-field>
      <cmp-field>
        <description>no description</description>
        <field-name>empId</field-name>
      </cmp-field>
      <primkey-field>empId</primkey-field>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </entity>
    <session>
      <display-name>FacadeSessionBean</display-name>
      <ejb-name>FacadeSessionBean</ejb-name>
      <home>empprojpack.RemoteFacadeSessionHome</home>
      <remote>empprojpack.RemoteFacadeSession</remote>
      <ejb-class>empprojpack.FacadeSessionBean</ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Container</transaction-type>
      <ejb-local-ref>
        <ejb-ref-name>ejb/EmployeeBean</ejb-ref-name>
        <ejb-ref-type>Entity</ejb-ref-type>
        <local-home>empprojpack.LocalEmpHome</local-home>
        <local>empprojpack.LocalEmp</local>
        <ejb-link>ejb-jar-ic.jar#EmpBean</ejb-link>
      </ejb-local-ref>
      <ejb-local-ref>
        <ejb-ref-name>ejb/ProjectBean</ejb-ref-name>
        <ejb-ref-type>Entity</ejb-ref-type>
        <local-home>empprojpack.LocalProjHome</local-home>
        <local>empprojpack.LocalProj</local>
        <ejb-link>ejb-jar-ic.jar#ProjBean</ejb-link>
      </ejb-local-ref>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </session>
  </enterprise-beans>
  <relationships>
    <description>EmployeeToProject</description>
    <ejb-relation>
      <description>EmployeeToProject</description>
      <ejb-relationship-role>
        <ejb-relationship-role-name>EmpBean</ejb-relationship-role-name>
        <multiplicity>Many</multiplicity>
        <relationship-role-source>
          <ejb-name>EmpBean</ejb-name>
        </relationship-role-source>
        <cmr-field>
          <cmr-field-name>proj</cmr-field-name>
          <cmr-field-type>java.util.Collection</cmr-field-type>
        </cmr-field>
      </ejb-relationship-role>
      <ejb-relationship-role>
        <ejb-relationship-role-name>ProjBean</ejb-relationship-role-name>
        <multiplicity>Many</multiplicity>
        <relationship-role-source>
          <ejb-name>ProjBean</ejb-name>
        </relationship-role-source>
        <cmr-field>
          <cmr-field-name>emp</cmr-field-name>
          <cmr-field-type>java.util.Collection</cmr-field-type>
        </cmr-field>
      </ejb-relationship-role>
    </ejb-relation>
  </relationships>
  <assembly-descriptor>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEJBLocalHome</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjName</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>isIdentical</method-name>
        <method-params>
          <method-param>javax.ejb.EJBLocalObject</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjId</method-name>
        <method-params />
      </method>
    </method-permission>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEJBLocalHome</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpId</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</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>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>isIdentical</method-name>
        <method-params>
          <method-param>javax.ejb.EJBLocalObject</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpName</method-name>
        <method-params />
      </method>
    </method-permission>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>testManyToMany</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getHandle</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>getHomeHandle</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>getEJBMetaData</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>create</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getEJBHome</method-name>
        <method-params />
      </method>
    </method-permission>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</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>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>addEmployee</method-name>
        <method-params>
          <method-param>empprojpack.LocalEmp</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjName</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjId</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</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>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpName</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjects</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpId</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>testManyToMany</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
  </assembly-descriptor>
</ejb-jar>

[Gowher Naik]

hi Satou
This is code which i use to set relationship

LocalEmp employee=empHome.create(empId,name);
LocalProj project=projHome.create(projId,projName);
project.addEmployee(employee);
 

//the addEmployee(employee) method in ProjBean is 
 
public void addEmployee(LocalEmp employee){
getEmp().add(employee);
}
 

Now if i set following data for emp and proj table
EMP Table
----------
empid=1 name=EMP1
empid=2 name=EMP2
empid=3 name=EMP3
empid=4 name=EMP4


PROJ Table
------------
projid=11 projname=EJBProj
projid=22 projname=JSPProj
projid=33 projname=CoreProj
projid=44 projname=SoapProj

The LInk Table created by container is

EMPID=1 projID=11
EMPID=2 projID=22
EMPID=3 projID=33
EMPID=4 projID=44

In such case i will never able to set many projects to single Employee
because empid is pk for emp table and projId is pk for project table.
thus projId and empid should be unique.

What i want to do is

The LInk Table created by container should be

EMPID=1 projID=11
EMPID=1 projID=22
EMPID=1 projID=33
EMPID=1 projID=44

Above case is single employee(Emp 1) having many project(projid 11,22,33,44);

I hope you understand my problem.

Thanks

[Christophe Verré]

thus projId and empid should be unique.

Yes, for both the project table and the employee table.
But we are talking about the many-to-many relation table, so it's ok. Try

LocalEmp employee=empHome.create("1","EMP1");
LocalProj project=projHome.create("11","EJBProj");
LocalProj project2=projHome.create("22","JSPProj");
project.addEmployee(employee);
project2.addEmployee(employee);

You will see that in the link table, you have :
EMPID=1 projID=11
EMPID=1 projID=22

[Christophe Verré]

I'm posting my sample, it's not clean, but see what you can do from it.

Client

/**
 * 
 */
package empprojpack;
 
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
 
 
public class Client {
 
public static void main(String[] args) {

try { 
InitialContext ctx = new InitialContext();
RemoteFacadeSessionHome home = (RemoteFacadeSessionHome)PortableRemoteObject.narrow(ctx.lookup("ejb/SessionBean"), RemoteFacadeSessionHome.class);
RemoteFacadeSession session = home.create();

session.createEmployee("EMP1", "kuri");
session.createEmployee("EMP2", "joe");
session.createProject("PROJ1", "FirstProject");
session.createProject("PROJ2", "SecondProject");
session.createProject("PROJ3", "ThirdProject");
session.setEmployeeIntoProject("EMP1", "PROJ1");
session.setEmployeeIntoProject("EMP1", "PROJ2");
session.setEmployeeIntoProject("EMP1", "PROJ3");
session.setEmployeeIntoProject("EMP2", "PROJ2");

showProjectsFor(session, "EMP1");
showProjectsFor(session, "EMP2");

showEmployeesFor(session, "PROJ1");
showEmployeesFor(session, "PROJ2");


} catch( Exception e ) {
e.printStackTrace();
}
}

public static void showProjectsFor(RemoteFacadeSession session, String empId) throws Exception {
String[] projects = session.getEmployeeProjects(empId);
System.out.println("-----------------------");
System.out.println("Employee " + empId + " is in the following projects : ");
for ( int i = 0; i < projects.length; i++ ) {
System.out.println(projects[i]);
}
}

public static void showEmployeesFor(RemoteFacadeSession session, String projId ) throws Exception {
System.out.println("-----------------------");
String[] employees = session.getProjectEmployees(projId);
System.out.println("In project " + projId + ", there are the following employees : ");
for ( int i = 0; i < employees.length; i++ ) {
System.out.println(employees[i]);
}
}
}

EmpBean

/**
 * 
 */
package empprojpack;
 
import java.util.Collection;
 
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
 
public abstract class EmpBean implements EntityBean {
 
   public abstract void setEmpId(String empid);//PK
public abstract String getEmpId();
public abstract String getEmpName();
public abstract void setEmpName(String empName);

//CMR
public abstract void setProj(Collection proj);
public abstract Collection getProj();
 

public String ejbCreate(String empid,String empName)throws CreateException{
setEmpId(empid);
setEmpName(empName);
return null;
}
public void ejbPostCreate(String empid,String empName)throws CreateException{
}

public Collection getProjects() {
return getProj();
}

/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbActivate()
 */
public void ejbActivate()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbLoad()
 */
public void ejbLoad() {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbPassivate()
 */
public void ejbPassivate()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbRemove()
 */
public void ejbRemove() throws RemoveException {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbStore()
 */
public void ejbStore() {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#setEntityContext(javax.ejb.EntityContext)
 */
public void setEntityContext(EntityContext arg0)  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#unsetEntityContext()
 */
public void unsetEntityContext()  {
}
 
}
 
/**
 * 
 */
package empprojpack;
 
import java.util.Collection;
 
import javax.ejb.EJBLocalObject;
 
public interface LocalEmp extends EJBLocalObject {
public String getEmpId();
public String getEmpName();
public Collection getProjects();

}
 
 
/**
 * 
 */
package empprojpack;
 
import javax.ejb.CreateException;
import javax.ejb.EJBLocalHome;
import javax.ejb.FinderException;
 
public interface LocalEmpHome extends EJBLocalHome {
 
public LocalEmp create(String empid,String empName)throws CreateException;
public LocalEmp findByPrimaryKey(String empId)throws FinderException;
 
}
 
 

Project

/**
 * 
 */
package empprojpack;
 
import java.util.Collection;
 
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
 
public abstract class ProjBean implements EntityBean {
 
public abstract void setProjId(String projId);//PK
public abstract String getProjId();
public abstract void setProjName(String projName);
public abstract String getProjName();

//CMR
public abstract void setEmp(Collection emp);
public abstract Collection getEmp();

public String ejbCreate(String projId,String projName)throws CreateException{
setProjId(projId);
setProjName(projName);

return null;
}
public void ejbPostCreate(String projId,String projName)throws CreateException{}

public void addEmployee(LocalEmp emp) {
getEmp().add(emp);
}

public Collection getEmployees() {
return getEmp();
}

/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbActivate()
 */
public void ejbActivate() {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbLoad()
 */
public void ejbLoad() {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbPassivate()
 */
public void ejbPassivate()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbRemove()
 */
public void ejbRemove() throws RemoveException {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#ejbStore()
 */
public void ejbStore()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#setEntityContext(javax.ejb.EntityContext)
 */
public void setEntityContext(EntityContext arg0)  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.EntityBean#unsetEntityContext()
 */
public void unsetEntityContext()  {
}
}
 
/**
 * 
 */
package empprojpack;
 
import java.util.Collection;
 
import javax.ejb.EJBLocalObject;
 
public interface LocalProj extends EJBLocalObject {
 
public String getProjId();
public String getProjName();
public void addEmployee(LocalEmp emp);
public Collection getEmployees();
 
}
 
 
/**
 * 
 */
package empprojpack;
 
import javax.ejb.CreateException;
import javax.ejb.EJBLocalHome;
import javax.ejb.FinderException;
 
public interface LocalProjHome extends EJBLocalHome {
public LocalProj create(String projId,String projName)throws CreateException;
public LocalProj findByPrimaryKey(String projId)throws FinderException;
}
 
 

FacadeSessionBean

/**
 * 
 */
package empprojpack;
 
import java.util.Collection;
import java.util.Iterator;
 
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.naming.InitialContext;
import javax.naming.NamingException;
 
public class FacadeSessionBean implements SessionBean {

/**
 * 
 */
private static final long serialVersionUID = 5168056329602341163L;
 
public void ejbCreate() {

}

public void createEmployee(String empId, String empName) {
try { 
getEmployee(empId, empName);
} catch( Exception e ) {
e.printStackTrace();
}
}

public void createProject(String projId, String projName ) {
try {
getProject(projId, projName);
} catch( Exception e ) {
e.printStackTrace();
}
}

public void setEmployeeIntoProject(String empId, String projId) {

try {
InitialContext ctx = new InitialContext();

// Employee
LocalEmpHome empHome = (LocalEmpHome)ctx.lookup("java:comp/env/ejb/EmployeeBean");
LocalEmp employee = empHome.findByPrimaryKey(empId);

// Project
LocalProjHome projHome = (LocalProjHome)ctx.lookup("java:comp/env/ejb/ProjectBean");
LocalProj project = projHome.findByPrimaryKey(projId);

project.addEmployee(employee);
} catch( Exception e ) {
e.printStackTrace();
}
}

public String[] getEmployeeProjects(String empId) {
String[] projectNames = null;

try {
InitialContext ctx = new InitialContext();

// Employee
LocalEmpHome empHome = (LocalEmpHome)ctx.lookup("java:comp/env/ejb/EmployeeBean");
LocalEmp employee = empHome.findByPrimaryKey(empId);

Collection employeeProjects = employee.getProjects();
Iterator it = employeeProjects.iterator();
projectNames = new String[employeeProjects.size()];
int i = 0;
while( it.hasNext() ) {
LocalProj proj = (LocalProj)it.next();
projectNames[i++] = proj.getProjName();
}

} catch( Exception e ) {
e.printStackTrace();
}

return projectNames;
}

public String[] getProjectEmployees(String projId) {
String[] employeeNames = null;

try {
InitialContext ctx = new InitialContext();

// Project
LocalProjHome projHome = (LocalProjHome)ctx.lookup("java:comp/env/ejb/ProjectBean");
LocalProj project = projHome.findByPrimaryKey(projId);

Collection projectEmployees = project.getEmployees();
Iterator it = projectEmployees.iterator();
employeeNames = new String[projectEmployees.size()];
int i = 0;
while( it.hasNext() ) {
LocalEmp emp = (LocalEmp)it.next();
employeeNames[i++] = emp.getEmpName();
}

} catch( Exception e ) {
e.printStackTrace();
}

return employeeNames;

}

/**
 * Creates an employee. Gets one if already existing 
 * @param empId
 * @param empName
 * @return
 * @throws NamingException
 * @throws FinderException
 */
private LocalEmp getEmployee(String empId, String empName) throws NamingException, FinderException {
InitialContext ctx = new InitialContext();
LocalEmpHome empHome = (LocalEmpHome)ctx.lookup("java:comp/env/ejb/EmployeeBean");
LocalEmp employee = null;
try { 
employee = (LocalEmp)empHome.create(empId, empName);
} catch( CreateException e ) {
employee = empHome.findByPrimaryKey(empId);
}

return employee;
}

/**
 * Creates an project. Gets one if already existing
 * @param projId
 * @param projName
 * @return
 * @throws NamingException
 * @throws FinderException
 */
private LocalProj getProject(String projId, String projName) throws NamingException, FinderException {
InitialContext ctx = new InitialContext();
LocalProjHome projHome = (LocalProjHome)ctx.lookup("java:comp/env/ejb/ProjectBean");
LocalProj project = null;
try { 
project = (LocalProj)projHome.create(projId, projName);
} catch( CreateException e ) {
project = projHome.findByPrimaryKey(projId);
}
return project;
}

/* (non-Javadoc)
 * @see javax.ejb.SessionBean#ejbActivate()
 */
public void ejbActivate() {
}
 
/* (non-Javadoc)
 * @see javax.ejb.SessionBean#ejbPassivate()
 */
public void ejbPassivate()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.SessionBean#ejbRemove()
 */
public void ejbRemove()  {
}
 
/* (non-Javadoc)
 * @see javax.ejb.SessionBean#setSessionContext(javax.ejb.SessionContext)
 */
public void setSessionContext(SessionContext arg0)  {
}
 
}
 
/**
 * 
 */
package empprojpack;
 
import java.rmi.RemoteException;
 
import javax.ejb.EJBObject;
 
public interface RemoteFacadeSession extends EJBObject {

public void createEmployee(String empId, String empName) throws RemoteException;
public void createProject(String projId, String projName ) throws RemoteException;
public void setEmployeeIntoProject(String empId, String projId) throws RemoteException;
public String[] getEmployeeProjects(String empId) throws RemoteException;
public String[] getProjectEmployees(String projId) throws RemoteException;
}
 
 
/**
 * 
 */
package empprojpack;
 
import java.rmi.RemoteException;
 
import javax.ejb.CreateException;
import javax.ejb.EJBHome;
 
public interface RemoteFacadeSessionHome extends EJBHome {
public RemoteFacadeSession create() throws RemoteException, CreateException;
}
 

Descriptor

<?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>
  <display-name>EjbTest</display-name>
  <enterprise-beans>
    <entity>
      <display-name>ProjBean</display-name>
      <ejb-name>ProjBean</ejb-name>
      <local-home>empprojpack.LocalProjHome</local-home>
      <local>empprojpack.LocalProj</local>
      <ejb-class>empprojpack.ProjBean</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>ProjBean</abstract-schema-name>
      <cmp-field>
        <description>no description</description>
        <field-name>projName</field-name>
      </cmp-field>
      <cmp-field>
        <description>no description</description>
        <field-name>projId</field-name>
      </cmp-field>
      <primkey-field>projId</primkey-field>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </entity>
    <entity>
      <display-name>EmpBean</display-name>
      <ejb-name>EmpBean</ejb-name>
      <local-home>empprojpack.LocalEmpHome</local-home>
      <local>empprojpack.LocalEmp</local>
      <ejb-class>empprojpack.EmpBean</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>EmpBean</abstract-schema-name>
      <cmp-field>
        <description>no description</description>
        <field-name>empName</field-name>
      </cmp-field>
      <cmp-field>
        <description>no description</description>
        <field-name>empId</field-name>
      </cmp-field>
      <primkey-field>empId</primkey-field>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </entity>
    <session>
      <display-name>FacadeSessionBean</display-name>
      <ejb-name>FacadeSessionBean</ejb-name>
      <home>empprojpack.RemoteFacadeSessionHome</home>
      <remote>empprojpack.RemoteFacadeSession</remote>
      <ejb-class>empprojpack.FacadeSessionBean</ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Container</transaction-type>
      <ejb-local-ref>
        <ejb-ref-name>ejb/EmployeeBean</ejb-ref-name>
        <ejb-ref-type>Entity</ejb-ref-type>
        <local-home>empprojpack.LocalEmpHome</local-home>
        <local>empprojpack.LocalEmp</local>
        <ejb-link>ejb-jar-ic.jar#EmpBean</ejb-link>
      </ejb-local-ref>
      <ejb-local-ref>
        <ejb-ref-name>ejb/ProjectBean</ejb-ref-name>
        <ejb-ref-type>Entity</ejb-ref-type>
        <local-home>empprojpack.LocalProjHome</local-home>
        <local>empprojpack.LocalProj</local>
        <ejb-link>ejb-jar-ic.jar#ProjBean</ejb-link>
      </ejb-local-ref>
      <security-identity>
        <description></description>
        <use-caller-identity></use-caller-identity>
      </security-identity>
    </session>
  </enterprise-beans>
  <relationships>
    <description>EmployeeToProject</description>
    <ejb-relation>
      <description>EmployeeToProject</description>
      <ejb-relationship-role>
        <ejb-relationship-role-name>EmpBean</ejb-relationship-role-name>
        <multiplicity>Many</multiplicity>
        <relationship-role-source>
          <ejb-name>EmpBean</ejb-name>
        </relationship-role-source>
        <cmr-field>
          <cmr-field-name>proj</cmr-field-name>
          <cmr-field-type>java.util.Collection</cmr-field-type>
        </cmr-field>
      </ejb-relationship-role>
      <ejb-relationship-role>
        <ejb-relationship-role-name>ProjBean</ejb-relationship-role-name>
        <multiplicity>Many</multiplicity>
        <relationship-role-source>
          <ejb-name>ProjBean</ejb-name>
        </relationship-role-source>
        <cmr-field>
          <cmr-field-name>emp</cmr-field-name>
          <cmr-field-type>java.util.Collection</cmr-field-type>
        </cmr-field>
      </ejb-relationship-role>
    </ejb-relation>
  </relationships>
  <assembly-descriptor>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEJBLocalHome</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjName</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>isIdentical</method-name>
        <method-params>
          <method-param>javax.ejb.EJBLocalObject</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjId</method-name>
        <method-params />
      </method>
    </method-permission>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEJBLocalHome</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpId</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</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>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>isIdentical</method-name>
        <method-params>
          <method-param>javax.ejb.EJBLocalObject</method-param>
        </method-params>
      </method>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpName</method-name>
        <method-params />
      </method>
    </method-permission>
    <method-permission>
      <unchecked />
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getHandle</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>getHomeHandle</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getPrimaryKey</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>getEJBMetaData</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Home</method-intf>
        <method-name>create</method-name>
        <method-params />
      </method>
      <method>
        <ejb-name>FacadeSessionBean</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>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getEJBHome</method-name>
        <method-params />
      </method>
    </method-permission>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</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>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmployees</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>addEmployee</method-name>
        <method-params>
          <method-param>empprojpack.LocalEmp</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjName</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>ProjBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjId</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</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>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpName</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>remove</method-name>
        <method-params>
          <method-param>java.lang.Object</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getProjects</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>remove</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>LocalHome</method-intf>
        <method-name>findByPrimaryKey</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>EmpBean</ejb-name>
        <method-intf>Local</method-intf>
        <method-name>getEmpId</method-name>
        <method-params />
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getEmployeeProjects</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>createEmployee</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>setEmployeeIntoProject</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>createProject</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
    <container-transaction>
      <method>
        <ejb-name>FacadeSessionBean</ejb-name>
        <method-intf>Remote</method-intf>
        <method-name>getProjectEmployees</method-name>
        <method-params>
          <method-param>java.lang.String</method-param>
        </method-params>
      </method>
      <trans-attribute>Required</trans-attribute>
    </container-transaction>
  </assembly-descriptor>
</ejb-jar>

[ July 03, 2007: Message edited by: Satou kurinosuke ]

[Christophe Verré]

When I execute the Client, I get the following output :

-----------------------
Employee EMP1 is in the following projects : 
ThirdProject
SecondProject
FirstProject
-----------------------
Employee EMP2 is in the following projects : 
SecondProject
-----------------------
In project PROJ1, there are the following employees : 
kuri
-----------------------
In project PROJ2, there are the following employees : 
joe
kuri

[Gowher Naik]

Thanks Satou kurinosuke for your help.
Thank you very much.

[Gowher Naik]

Hi Satou
Can i know which server you are using?

[Christophe Verré]

Sun's J2EE RI 1.3.1