Deploying BMP Entity Bean with primary key calss

Question

Hi,
I am using EJB 2.0 with and websphere studio 5.0 and database is sql server 2000.
My BMP Entity bean has a primary key class.From my client I am invoking the Entity Bean by calling it's findbyprimarykey method.
The home interface of my findbyprimarykey method returns a class of type Remote.But in the Entity Bean class,the return type is the primarykey class type.
My problem is invoking this findbyprimarykey from the client to get the remote interface so that the other business methods of the entity bean can be called.
The control goes into the ejbFindbyPrimaryKey but when it is returing from the Entity Bean class,it gives a remote exception (as the return type in Entity Bean class and Home interface are different for the findbyprimarykey method).
I think that somewhere in the deployment decriptor in my websphere,i have to specify the primarykey class type,which i am missing out and hence getting the error.
Please help me out with your advice and solution.
Thanks
Rahul Priyadarshi

Answer 1

Hi,
Sorry to disturb you again.
Even my code is also almost the same....i am pasting the code below...Please go through it and let me know if I have made any mistake..
EditVendorEntityBean.....(Bean Class)
package code.beans.EditVendor;
import code.beans.dataAccess.*;
import javax.ejb.CreateException;
import javax.ejb.RemoveException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.EJBException;
import javax.ejb.FinderException;
import javax.ejb.ObjectNotFoundException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.sql.*;
import javax.sql.*;
import java.util.*;
* Bean implementation class for Enterprise Bean: EditVendorEntity
public class EditVendorEntityBean implements javax.ejb.EntityBean {
     private static Hashtable dataSources = new Hashtable();
     private String username;
private int Vendor_ID;
private int Category_Id;
private String Category_Name;
private String Vendor_Name;
private String Vendor_Address1;
private String Vendor_Address2;
private String Contact_Name;
private String Home_Phone;
private String Work_Phone;
private String email;
private String faxno;
private String userloginname;
private boolean dirtyFlag = false;
private EntityContext context;
private static final String DS_NAME = "jdbc/spiPOPS";
Connection con = null;
Statement stmt = null;
PreparedStatement st = null;
ResultSet res = null;
     //***********************Business Methods*********************
// Begin of Busines Methods
public void setData (String[] catname, String vendorname,String vendadd1,String vendadd2,String vendcontact,String venoff,String venres,String mailid,String venfax) {
          System.out.println("in setData where Vendor Id= "+ Vendor_ID);
               boolean status=false;
               boolean existing=false;
               ArrayList cat=new ArrayList();
               try
                    cat=getcategorylist(this.Vendor_ID);
               catch(SQLException e)
                    System.out.println("Could not get category list");
               System.out.println("Size of cat array -->" + cat.size() + " and string array size -->" + catname.length);
               if(catname.length>0)
                    //Removing unwanted vendor categories for a particular vendor id
                    for(int i=0;i<cat.size();i++)
                              existing=false;
                              String tempdata=(String)cat.get(i);
                              for(int j=0;j<catname.length;j++)
                                   if(tempdata.equals(catname[j]))
                                        existing=true;
                              if(!existing)
                                   try
                                        delvencat(this.Vendor_ID,tempdata.trim());
                                   catch(SQLException e)
                                        System.out.println("Could not delete record in POPS_VENDOR_CATEGORY for -->" + tempdata);
               //Adding new vendor categories for a particular vendor
                    try
                              for(int i=0;i<catname.length;i++)
                                   status=false;
                                   String strcat=catname;
                                   status=checkcat(this.Vendor_ID,strcat.trim());
                                   if(!status)
                                        insertvencat(this.Vendor_ID,strcat.trim());
                    catch(SQLException e)
                              System.out.println("Could not insert or select from POPS_VENDOR_CATEGORY table");
               this.Vendor_Name          =vendorname;
          this.Vendor_Address1     =vendadd1;
          this.Vendor_Address2     =vendadd2;
          this.Contact_Name          =vendcontact;
          this.Work_Phone               =venoff;
          this.Home_Phone               =venres;
          this.email                    =mailid;
          this.faxno                    =venfax;
               dirtyFlag = true;
               System.out.println("Leaving set data method");
public Vector getData() {
     Vector vctRec=new Vector();
     ArrayList arrdatas = new ArrayList();
     arrdatas.add(""+this.Vendor_ID);
     arrdatas.add(this.Vendor_Name);
     arrdatas.add(this.Vendor_Address1);
     arrdatas.add(this.Vendor_Address2);
     arrdatas.add(this.Contact_Name);
     arrdatas.add(this.Work_Phone);
     arrdatas.add(this.Home_Phone);
     arrdatas.add(this.email);
     arrdatas.add(this.faxno);
     vctRec.addElement(arrdatas);
     ArrayList cat=new ArrayList();
          try
          System.out.println("Calling getcategorylist from getdata with vendorid-->" + this.Vendor_ID);
          cat          = getcategorylist(this.Vendor_ID);
     catch(SQLException e)
               System.out.println("Could not get datas for category list");
     vctRec.addElement(cat);
     ArrayList allcats=new ArrayList();
     try
                    allcats          = getallcategorylist();
          catch(SQLException e)
                    System.out.println("Could not get datas for category list");
     vctRec.addElement(allcats);
          dirtyFlag = false;
     System.out.println("Before return statement in getdata with vector size -->" + vctRec.size());
          return vctRec;
// End of Business Methods
//**************************Entity Bean Methods*******************************
     * ejbActivate
     public void ejbActivate() {
          Vendor_ID = Integer.parseInt((String)context.getPrimaryKey());
     System.out.println("Inside ejbActivate Vendor_ID-->"+ Vendor_ID);
     * ejbLoad
     public void ejbLoad() {
          System.out.println("Inside ejbLoad ********" );
try {
loadRow();
}catch (Exception ex) {
          System.out.println("Failed in loadRow()");
throw new EJBException("ejbLoad: " +
ex.getMessage());
     * ejbPassivate
     public void ejbPassivate() {
     System.out.println("Inside ejbPassivate " );
Vendor_ID = 0;
     * ejbRemove
     public void ejbRemove() throws javax.ejb.RemoveException {
          //Empty Method
     * ejbStore
     public void ejbStore() {
System.out.println("Inside ejbStore " );
try {
storeRow();
}catch (Exception ex) {
          System.out.println("Exception thrown in storeRow" + ex.getMessage());
throw new EJBException("ejbLoad: " +
ex.getMessage());
     * getEntityContext
     public javax.ejb.EntityContext getEntityContext() {
          return context;
     * setEntityContext
     public void setEntityContext(javax.ejb.EntityContext ctx) {
          System.out.println("Inside setEntityContext " );
try{
     con = getConnection(DS_NAME);
     System.out.println("DB Connection Created!!");
catch(Exception e){
this.context = ctx;
     * unsetEntityContext
     public void unsetEntityContext() {
System.out.println("Inside unsetEntityContext " );
closeDbConnection(con, res, st);
this.context = null;
     * ejbCreate
     //code.beans.EditVendor.EditVendorEntityKey
     public code.beans.EditVendor.EditVendorEntityKey ejbCreate(String vendorid)
          throws javax.ejb.CreateException {          
          return new EditVendorEntityKey(vendorid);
          //return null;
     * ejbPostCreate
     public void ejbPostCreate(String vendorid) throws javax.ejb.CreateException {
          //Empty
     * ejbFindByPrimaryKey
     //code.beans.EditVendor.EditVendorEntityKey
     public code.beans.EditVendor.EditVendorEntityKey ejbFindByPrimaryKey(
          code.beans.EditVendor.EditVendorEntityKey primaryKey)
          throws javax.ejb.FinderException {
try {
if(selectByPrimaryKey(Integer.parseInt(primaryKey.getVendorId()))) {
          System.out.println("Leaving the findbyprimarykey method from the entity bean");
     return primaryKey;
     //return null;
}else {
     throw new ObjectNotFoundException
     ("Row for id " + primaryKey + " not found.");
}catch (Exception ex) {
throw new EJBException("EXCEPTION IN ejbFindByPrimaryKey :- " + ex.getMessage());
     /*********************** Database Utility Routines *************************/
private boolean selectByPrimaryKey(int priKey)
throws SQLException {
     System.out.println("inside selectByPrimaryKey for primary key " + priKey);
String queryStr ="SELECT VENDOR_ID FROM POPS_VENDOR WHERE VENDOR_ID = " + priKey;
System.out.println("in selectByPrimaryKey where queryString is: "+ queryStr);
          stmt = con.createStatement();
ResultSet result = stmt.executeQuery(queryStr);
if(!result.next()) {
stmt.close();
     System.out.println("Did not find "+priKey);
return false;
else { //Found the primaryKey
Vendor_ID = result.getInt("VENDOR_ID");
stmt.close();
return true;
private void loadRow() throws SQLException {
          System.out.println("inside loadRow ...");
          stmt = con.createStatement();
          String queryStr = "SELECT VENDOR_NAME,VENDOR_ADDRESS1,VENDOR_ADDRESS2,CONTACT_NAME,HOME_PHONE,WORK_PHONE,EMAIL_ID,FAX_NO " +
                              "FROM POPS_VENDOR WHERE VENDOR_ID=" + Vendor_ID;
          System.out.println("Inside loadRow()***********"+queryStr);
          ResultSet result = stmt.executeQuery(queryStr);
          ArrayList catadatas=new ArrayList();
     if(!result.next())
     throw new SQLException("No record for primary key" + Vendor_ID);
          this.Vendor_ID               =Vendor_ID;
                    this.Vendor_Name          =result.getString("VENDOR_NAME");
                    this.Vendor_Address1     =result.getString("VENDOR_ADDRESS1");
                    this.Vendor_Address2     =result.getString("VENDOR_ADDRESS2");
                    this.Contact_Name          =result.getString("CONTACT_NAME");
                    this.Home_Phone               =result.getString("HOME_PHONE");
                    this.Work_Phone               =result.getString("WORK_PHONE");
                    this.email                    =result.getString("EMAIL_ID");
                    this.faxno                    =result.getString("FAX_NO");
                         System.out.println("Leaving loadrow method with loaded datas for vendor -->" + Vendor_ID);
                         stmt.close();
private ArrayList getcategorylist(int vendor) throws SQLException{
          String queryStr ="SELECT DISTINCT(VENDOR_CAT) FROM POPS_VENDOR_CATEGORY WHERE VENDOR_ID=" + vendor;
          System.out.println("Query for the cat list --> " + queryStr);
          stmt = con.createStatement();
          ResultSet result = stmt.executeQuery(queryStr);
          ArrayList catdatas=new ArrayList();
try{
               while(result.next())
                    catdatas.add(result.getString("VENDOR_CAT"));
          catch (SQLException e){
               stmt.close();
               System.out.println("Could not retrieve datas for Category list");
          stmt.close();
          System.out.println("size off array for cat -->" + catdatas.size() + " and datas ->" + catdatas);
          return catdatas;
     private ArrayList getallcategorylist() throws SQLException{
               //String queryStr ="SELECT DISTINCT(VENDOR_CAT) FROM POPS_VENDOR_CATEGORY";
               StringBuffer strquery=new StringBuffer(20);
               strquery.append("SELECT DISTINCT(CATEGORY_NAME) FROM POPS_CATEGORY");
               stmt = con.createStatement();
               //ResultSet result = stmt.executeQuery(queryStr);
               ResultSet result = stmt.executeQuery(strquery.toString());
               ArrayList catdatas=new ArrayList();
               try{
                    while(result.next())
                              //catdatas.add(result.getString("VENDOR_CAT"));
                              catdatas.add(result.getString("CATEGORY_NAME"));
               catch (SQLException e){
                         stmt.close();
                         System.out.println("Could not retrieve datas for All Category list");
               stmt.close();
               return catdatas;
     private void delvencat(int vendor,String vencat) throws SQLException {
          int update=-1;
          stmt = con.createStatement();
          String queryStr ="DELETE FROM POPS_VENDOR_CATEGORY WHERE VENDOR_ID = " + vendor + " AND VENDOR_CAT = '" + vencat.toUpperCase() + "'";
          System.out.println("Delete query --> " + queryStr);
          update= stmt.executeUpdate(queryStr);
          if(update!=1)
               System.out.println("Did not find data to delete");
          stmt.close();
     private void insertvencat(int vendor,String vencat) throws SQLException {
          int update=-1;
          String queryStr ="INSERT INTO POPS_VENDOR_CATEGORY(VENDOR_ID,VENDOR_CAT)" +
                              " VALUES(" + vendor +",'" + vencat + "')";
          System.out.println("Insert query --> " + queryStr);
          stmt = con.createStatement();
          update=stmt.executeUpdate(queryStr);
          if(update!=1)
               System.out.println("Could not insert records in the database");
          stmt.close();
     private boolean checkcat(int vendor,String catven) throws SQLException {
          boolean datastatus=false;
          String queryStr ="SELECT VENDOR_ID FROM POPS_VENDOR_CATEGORY WHERE VENDOR_ID = " + vendor + " AND VENDOR_CAT = '" + catven.toUpperCase() + "'";
          stmt = con.createStatement();
          ResultSet result = stmt.executeQuery(queryStr);
          datastatus=result.next();
          stmt.close();
          return datastatus;
private void storeRow() throws SQLException {
               System.out.println("Inside ejb store");
     if (!dirtyFlag) {
     System.out.println("Skipping the UPDATE because object is not dirty");
     return;
     CallableStatement cs=null;
try{
                    cs = con.prepareCall("EXEC POPS_VENDOR_UPDATE " + this.Vendor_ID + ",'" + this.Vendor_Name + "','" + this.Vendor_Address1 + "','" + this.Vendor_Address2 + "','" + this.Contact_Name + "','" + this.Work_Phone + "','" + this.Home_Phone + "','" + this.email + "','" + this.faxno +"'");
                    System.out.println("\n\n SQL Statement : \n " + "EXEC POPS_VENDOR_UPDATE " + this.Vendor_ID + ",'" + this.Vendor_Name + "','" + this.Vendor_Address1 + "','" + this.Vendor_Address2 + "','" + this.Contact_Name + "','" + this.Work_Phone + "','" + this.Home_Phone + "','" + this.email + "','" + this.faxno +"'");
                    cs.executeUpdate();
          catch (SQLException e){
                    cs.close();
                    System.out.     println("\n\n Error in calling stored procedure POPS_INSERT_NEW_REQUEST \n\n"+ e.getMessage() + "\n\n");
          cs.close();
          dirtyFlag = false;
     private Connection getConnection(String dbName) throws SQLException
          String configuredDataSourceName = null;
          if (dbName == null) {
               System.out.println("Attemp to get connection failed. The requested database name is null");
          DataSource dbSource = getDataSource(dbName);
          return dbSource.getConnection();
     private DataSource getDataSource(String dbName)
          // looking from cache;
          DataSource dbSource = (DataSource) dataSources.get(dbName);
          if (dbSource == null) { //we need to find it from JNDI
               try {
                    Context ic = new InitialContext();
                    dbSource = (DataSource) ic.lookup(dbName);
                    dataSources.put(dbName, dbSource);
               }catch (NamingException e){
          return dbSource;
     * User calls this function to safely close an connection
     * @param connt The connection a datasource
     * @param rs The resulSet inside this connection
     * @param statement The statement associate with this connection
     private void closeDbConnection(Connection cont,ResultSet rs,Statement statement)
          if (rs != null)
          try {
                    rs.close();
               } catch (SQLException ignored) {
                    ignored.printStackTrace();
          if (statement != null)
               try {
                    statement.close();
               } catch (SQLException ignored) {
                    ignored.printStackTrace();
          if (cont != null)
               try {
                    cont.close();
               } catch (SQLException ignored) {
                    ignored.printStackTrace();
     } //closeDbConnection
EditVendorEntity (Remote Interface)
package code.beans.EditVendor;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
import java.util.*;
* Remote interface for Enterprise Bean: EditVendorEntity
public interface EditVendorEntity extends javax.ejb.EJBObject {
     public void setData (String[] catname, String vendorname,String vendadd1,String vendadd2,String vendcontact,String venoff,String venres,String mailid,String venfax)
               throws RemoteException;
public Vector getData() throws RemoteException;
EditVendorEntityHome (Home Interface)
package code.beans.EditVendor;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import javax.ejb.DuplicateKeyException;
import javax.ejb.EJBHome;
import java.util.*;
* Home interface for Enterprise Bean: EditVendorEntity
public interface EditVendorEntityHome extends javax.ejb.EJBHome {
     * Creates an instance from a key for Entity Bean: EditVendorEntity
     public code.beans.EditVendor.EditVendorEntity create(String vendorid)
          throws javax.ejb.CreateException, java.rmi.RemoteException;
     * Finds an instance using a key for Entity Bean: EditVendorEntity
     public code.beans.EditVendor.EditVendorEntity findByPrimaryKey(
          code.beans.EditVendor.EditVendorEntityKey Vendor_ID)
          throws javax.ejb.FinderException, java.rmi.RemoteException;
EditVendorEntityKey (Primary Key Class)
package code.beans.EditVendor;
* Key class for Entity Bean: EditVendorEntity
public class EditVendorEntityKey implements java.io.Serializable {
     static final long serialVersionUID = 3206093459760846163L;
     public String primkey;
     * Creates an empty key for Entity Bean: EditVendorEntity
     public EditVendorEntityKey() {  }
     public EditVendorEntityKey(String primarykey) {     
          this.primkey=primarykey;
     public String getVendorId() {
return primkey;
     * Returns true if both keys are equal.
     public boolean equals(java.lang.Object otherKey) {
          if (otherKey instanceof code.beans.EditVendor.EditVendorEntityKey) {
               code.beans.EditVendor.EditVendorEntityKey o =
                    (code.beans.EditVendor.EditVendorEntityKey) otherKey;
               return (primkey.equals(otherKey));
          return false;
     * Returns the hash code for the key.
     public int hashCode() {
          return (primkey.hashCode());
Please go through and give me your comments and solution...
Thanks in advance
Rahul