//
//  Source File Name: GetData.java  1.3 
//  
//   Licensed Materials -- Property of IBM 
//  
//   (c) Copyright International Business Machines Corporation, 1999. 
//       All Rights Reserved. 
//  
//   US Government Users Restricted Rights - 
//   Use, duplication or disclosure restricted by 
//   GSA ADP Schedule Contract with IBM Corp. 
//  
//   This sample program shows a simple statement handle and how to  
//   retrieve data from this statement. 

//  For more information about this sample, refer to the README file. 

//  For more information on Programming in Java, refer to the  
//  "Programming in Java" section of the Application Development Guide. 

//  For more information on building and running Java programs for DB2, 
//  refer to the "Building Java Applets and Applications" section of the  
//  Application Building Guide. 

//  For more information on the SQL language, refer to the SQL Reference. 

import java.io.*;
import java.lang.*;
import java.sql.*;

class GetData {

   static {
      try {
         //  register the driver with DriverManager 
         //  The newInstance() call is needed for the sample to work with 
         //  JDK 1.1.1 on OS/2, where the Class.forName() method does not 
         //  run the static initializer. For other JDKs, the newInstance 
         //  call can be omitted. 
         Class.forName("COM.ibm.db2.jdbc.app.DB2Driver").newInstance();
      } catch (Exception e) {
         e.printStackTrace();
      }
   }

   public static void main (String[] argv) {
      Connection con = null;
      try {
         //  connect using user id and password 
         if (argv.length == 3)
         {  //  connect using command line arguments 
            con = Tools.DBConnect(argv[0], argv[1], argv[2]); 
         }
         else
         {  //  prompt user for database name, user ID, password 
            con = Tools.DBConnect(); 
         }
         con.setAutoCommit(false);
         displayDeptInformation (con);

         //  disconnect from server and commit transactions 
         System.out.println ("\n>Disconnecting...");
         con.commit();
         con.close();
      } catch (Exception e) { e.printStackTrace(); }
   }

   //  
   //  displayDeptInformation 
   //     - executes a SELECT statement and displays results to screen 
   //  

   public static void displayDeptInformation (Connection con) {
      try {
         Statement stmt = con.createStatement();
         //  SQL Statement to select the department names and locations 
         ResultSet rs = stmt.executeQuery ("SELECT deptname, location from org WHERE " +
	    "division = 'Eastern'");

         System.out.println ("\nDepartments in Eastern division:");
         System.out.println ("DEPTNAME\t Location");
         System.out.println ("---------------- --------------");

         //  rs.next() returns false when there are no more rows 
         //  retrieve data from the table and display the results 
         while (rs.next()) {
            String dept = rs.getString (1);
            String loc = rs.getString (2);
            //  formatted output 
            System.out.println (Tools.padLength(dept, 17) + loc);
         }
         //  close handles 
         rs.close();
         stmt.close();
      } catch (Exception e) { e.printStackTrace(); }
   }
}