[jboss-user] [Beginners Corner] - Re: ERROR [NamingService] Could not start on port 1099
vkokodyn
do-not-reply at jboss.com
Mon Dec 4 11:21:42 EST 2006
I have ejbCreate method in my bean
==============
package com.beans.ejb;
import java.sql.*;
import java.util.Enumeration;
import java.util.Vector;
import java.rmi.RemoteException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.*;
import com.beans.interfaces.ProductPK;
import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.sql.DataSource;
/**
* XDoclet-based BMP entity bean.
*
* To generate EJB related classes using XDoclet:
*
* - Add Standard EJB module to XDoclet project properties
* - Customize XDoclet configuration
* - Run XDoclet
*
* Below are the xdoclet-related tags needed for this EJB.
*
* @ejb.bean name="Product"
* display-name="Name for Product"
* description="Description for Product"
* jndi-name="ejb/Product"
* type="BMP"
* view-type="both"
*/
public class ProductBean implements EntityBean {
/** The entity context */
private EntityContext context;
int UID;
String pName;
int pQuantity ;
String pPrice;
public int getUID() {
System.out.println("getUID");
return UID;
}
public String getpName() {
System.out.println("getpName");
return pName;
}
public int getpQuantity() {
System.out.println("getpQuantity");
return pQuantity;
}
public String getpPrice() {
System.out.println("getpPrice");
return pPrice;
}
public ProductBean() {
super();
// TODO Auto-generated constructor stub
}
/**
* There are zero or more ejbCreate(...) methods, whose signatures match
* the signatures of the create(...) methods of the entity bean?s home interface.
* The container invokes an ejbCreate(...) method on an entity bean instance
* when a client invokes a matching create(...) method on the entity bean?s
* home interface.
*
* The entity bean provider?s responsibility is to initialize the instance in the ejbCreate<
* METHOD>(...) methods from the input arguments, using the get and set accessor
* methods, such that when the ejbCreate(...) method returns, the persistent
* representation of the instance can be created.
*
* The entity bean provider must not attempt to modify the values of cmr-fields in an ejbCreate<
* METHOD(...) method; this should be done in the ejbPostCreate<METHOD(...) method instead.
*
* The entity object created by the ejbCreate method must have a unique primary
* key. This means that the primary key must be different from the primary keys of all the existing
* entity objects within the same home. However, it is legal to reuse the primary key of a previously
* removed entity object. The implementation of the bean provider?s ejbCreate<
* METHOD>(...) methods should be coded to return a null.
*
* An ejbCreate(...) method executes in the transaction context determined by
* the transaction attribute of the matching create(...) method.
* The database insert operations are performed by the container within the same
* transaction context after the Bean Provider?s ejbCreate(...) method completes.
*
* @throws CreateException Thrown if method fails due to system-level error.
*
* @throws CreateException
*
* @ejb.create-method
*/
public ProductPK ejbCreate( int UID, String pName, int pQuantity,
String pPrice) throws CreateException {
System.out.println("ejbCreate");
this.UID = UID;
this.pName = pName;
this.pQuantity = pQuantity;
this.pPrice = pPrice;
Connection connect = null;
PreparedStatement ps = null;
try {
String sql = "INSERT INTO ProductInfo" +
" (UID, pName, pQuantity, pPrice)" +
" VALUES" +
" (?, ?, ?, ?)";
connect = getConnection();
ps = connect.prepareStatement(sql);
ps.setInt(1, UID);
ps.setString(2, pName);
ps.setInt(3, pQuantity);
ps.setString(4, pPrice);
ps.executeUpdate();
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (ps!=null)
ps.close();
if (connect!=null)
connect.close();
}
catch (SQLException e) {
}
}
return new ProductPK(UID);
}
/**
* For each ejbCreate(...) method, there is a matching ejbPostCreate<
* METHOD>(...) method that has the same input parameters but whose return type is
* void. The container invokes the matching ejbPostCreate(...) method on
* an instance after it invokes the ejbCreate(...) method with the same arguments.
* The instance can discover the primary key by calling getPrimaryKey() on its
* entity context object.
*
* The entity object identity is available during the ejbPostCreate(...)
* method. The instance may, for example, obtain the component interface of the associated entity
* object and pass it to another enterprise bean as a method argument.
*
* The entity Bean Provider may use the ejbPostCreate(...) to set the values
* of cmr-fields to complete the initialization of the entity bean instance.
* An ejbPostCreate(...) method executes in the same transaction context as
* the previous ejbCreate(...) method.
*
* @throws CreateException Thrown if method fails due to system-level error.
*/
public void ejbPostCreate(int UID, String pName, int pQuantity
, String pPrice)
throws CreateException {
System.out.println("ejbPostCreate");
}
public ProductPK ejbFindByPrimaryKey(ProductPK primaryKey)
throws RemoteException, FinderException {
System.out.println("ejbFindByPrimaryKey");
Connection connect = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT pName" +
" FROM ProductInfo" +
" WHERE UID=?";
int UID = primaryKey.UID;
connect = getConnection();
ps = connect.prepareStatement(sql);
ps.setInt(1, UID);
rs = ps.executeQuery();
if (rs.next()) {
rs.close();
ps.close();
connect.close();
return primaryKey;
}
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (rs!=null)
rs.close();
if (ps!=null)
ps.close();
if (connect!=null)
connect.close();
}
catch (SQLException e) {
}
}
throw new ObjectNotFoundException();
}
public Enumeration ejbFindBypName(String pName)
throws RemoteException, FinderException {
System.out.println("ejbFindBypName");
Vector products = new Vector();
Connection connect = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT UID " +
" FROM ProductInfo" +
" WHERE pName=?";
connect = getConnection();
ps = connect.prepareStatement(sql);
ps.setString(1, pName);
rs = ps.executeQuery();
while (rs.next()) {
int UID = rs.getInt(1);
products.addElement(new ProductPK(UID));
}
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (rs!=null)
rs.close();
if (ps!=null)
ps.close();
if (connect!=null)
connect.close();
}
catch (SQLException e) {
}
}
return products.elements();
}
public void ejbActivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub
System.out.println("ejbActivate");
}
public void ejbLoad() throws EJBException, RemoteException {
// TODO Auto-generated method stub
System.out.println("ejbLoad");
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT pName, pPrice" +
" FROM ProductInfo" +
" WHERE UID=?";
con = getConnection();
ps = con.prepareStatement(sql);
ps.setInt(1, this.UID);
rs = ps.executeQuery();
if (rs.next()) {
this.pName = rs.getString(1);
this.pQuantity = rs.getInt(2);
this.pPrice = rs.getString(3);
}
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (rs!=null)
rs.close();
if (ps!=null)
ps.close();
if (con!=null)
con.close();
}
catch (SQLException e) {
}
}
}
public void ejbPassivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub
System.out.println("ejbPassivate");
}
public void ejbRemove() throws RemoveException,
EJBException, RemoteException {
// TODO Auto-generated method stub
System.out.println("ejbRemove");
Connection connect = null;
PreparedStatement ps = null;
try {
String sql = "DELETE FROM ProductInfo" +
" WHERE UID=?";
ProductPK key = (ProductPK) context.getPrimaryKey();
int UID = key.UID;
connect = getConnection();
ps = connect.prepareStatement(sql);
ps.setInt(1, UID);
ps.executeUpdate();
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (ps!=null)
ps.close();
if (connect!=null)
connect.close();
}
catch (SQLException e) {
}
}
}
public void ejbStore() throws EJBException, RemoteException {
// TODO Auto-generated method stub
System.out.println("ejbStore");
Connection connect = null;
PreparedStatement ps = null;
try {
String sql = "UPDATE ProductInfo" +
" SET pName=?, pQuantity=?, pPrice=?" +
" WHERE UID=?";
ProductPK key = (ProductPK) context.getPrimaryKey();
int UID = key.UID;
connect = getConnection();
ps = connect.prepareStatement(sql);
ps.setString(1, this.pName);
ps.setInt(2, this.pQuantity);
ps.setString(3, this.pPrice);
ps.setInt(4, UID);
ps.executeUpdate();
}
catch (SQLException e) {
System.out.println(e.toString());
}
finally {
try {
if (ps!=null)
ps.close();
if (connect!=null)
connect.close();
}
catch (SQLException e) {
}
}
}
/**
* Set the associated entity context. The container calls this method
* after the instance creation. The entity bean must not attempt to
* access its persistent state and relationships using the accessor
* methods during this method.
*
* The enterprise bean instance should store the reference to the context
* object in an instance variable.
*
* This method is called with no transaction context.
*
* @throws EJBException Thrown if method fails due to system-level error.
*/
public void setEntityContext(EntityContext newContext) throws EJBException {
System.out.println("setEntityContext");
context = newContext;
}
/**
* Unset the associated entity context. A container invokes this method
* before terminating the life of the instance. The entity bean must not
* attempt to access its persistent state and relationships using the
* accessor methods during this method.
*
* This method is called with no transaction context.
*
* @throws EJBException Thrown if method fails due to system-level error.
*/
public void unsetEntityContext() throws EJBException {
context = null;
}
public Connection getConnection() {
String DBDriver = null;
String DBUrl = null;
String DBUserName = null;
String DBPassword = null;
Context initialContext;
Context environment;
Connection connect = null;
DBUrl = "jdbc:odbc:EJB";
DBUserName = "";
DBPassword = "";
try {
DBDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
Class.forName(DBDriver).newInstance();
connect = DriverManager.getConnection(DBUrl, DBUserName, DBPassword);
System.out.println("Connect");
}
catch(Exception e) {
System.out.println(e);
//return;
}
return connect;
}
}
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