Help me to control the transactions from jsp to java bean

Question

Please anyone can guide me how to control the transactions from jsp to java bean. I am using the Websphere studio 5.1 to develop the database application. I would like to know two method to handle the database. First, I would like to know how I can control the transactions from jsp by using java bean which is auto generated for SQL statement to connect to the database. Following code are jsp and java bean.....
// call java bean from jsp
for (i=0;i<10;i++)
addCourse.execute(yr,sem,stdid,course,sec);
I write this loop in jsp to call java bean..
here is java bean for AddCourse.java
package com.abac.preregist.courseoperation;
import java.sql.*;
import com.ibm.db.beans.*;
* This class sets the DBModify property values. It also provides
* methods that execute your SQL statement and return
* a DBModify reference.
* Generated: Sep 7, 2005 3:10:24 PM
public class AddCourse {
     private DBModify modify;
     * Constructor for a DBModify class.
     public AddCourse() {
          super();
          initializer();
     * Creates a DBModify instance and initializes its properties.
     protected void initializer() {
          modify = new DBModify();
          try {
               modify.setDataSourceName("jdbc/ABAC/PreRegist/PRERMIS");
               modify.setCommand(
                    "INSERT INTO informix.javacourseouttemp " +
                    "( yr, sem, studentid, courseid, section ) " +
                    "VALUES ( :yr, :sem, :studentid, :courseid, :section )");
               DBParameterMetaData parmMetaData = modify.getParameterMetaData();
               parmMetaData.setParameter(
                    1,
                    "yr",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
               parmMetaData.setParameter(
                    2,
                    "sem",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
               parmMetaData.setParameter(
                    3,
                    "studentid",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.CHAR,
                    String.class);
               parmMetaData.setParameter(
                    4,
                    "courseid",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.CHAR,
                    String.class);
               parmMetaData.setParameter(
                    5,
                    "section",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
          } catch (SQLException ex) {
               ex.printStackTrace();
     * Executes the SQL statement.
     public void execute(
          String userid,
          String password,
          Short yr,
          Short sem,
          String studentid,
          String courseid,
          Short section)
          throws SQLException {
          try {
               modify.setUsername(userid);
               modify.setPassword(password);
               modify.setParameter("yr", yr);
               modify.setParameter("sem", sem);
               modify.setParameter("studentid", studentid);
               modify.setParameter("courseid", courseid);
               modify.setParameter("section", section);
               modify.execute();
          // Free resources of modify object.
          finally {
               modify.close();
     public void execute(
               Short yr,
               Short sem,
               String studentid,
               String courseid,
               Short section)
               throws SQLException {
               try {
                    //modify.setUsername(userid);
                    //modify.setPassword(password);
                    modify.setParameter("yr", yr);
                    modify.setParameter("sem", sem);
                    modify.setParameter("studentid", studentid);
                    modify.setParameter("courseid", courseid);
                    modify.setParameter("section", section);
                    modify.execute();
               // Free resources of modify object.
               finally {
                    modify.close();
     * Returns a DBModify reference.
     public DBModify getDBModify() {
          return modify;
I would like to know that how can I do for autocommit from jsp. For example, the looping is 10 times which mean I will add 10 records to the db. If the last record is failed to add to db, "how can I rollback the perivious records?" or guide me to set the commit function to handle that case. Thanks a lot for take your time to read my question.

Answer 1

Hello.
The best method is using a session bean and container managed transactions. Other method is using sessions bean and the user transaction object (JTA-JTS).
so, JDBC has transaction management too.
good luck.