package javatemplate1;
// MYSQL table mysqlVisitor1A
// Using Thread Sleep 
import java.sql.*;

import java.sql.ResultSet; // for result set
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

public class JavaTemplate1 {
    // example of 
       public static void main(String[] args) throws InterruptedException {
        // TODO code application logic here
        System.out.println("main block executing ");
       Connection c = null; //manage copnnection
       Statement st = null;// query statement support
       ResultSet rs = null;// active connection database result
    //String dbURL = "jdbc:postgresql://localhost:5432/pgsdemo1";
   // String user = "postgres"; String pwd = "postgre_manas9";
  String dbURL = "jdbc:mysql://localhost/test?"; 
  String user = "Manas9"; String pwd = "Manas9237";
   
 String sqlCreate = "create table mysqlVisitor1A(" + "idV1A int(3) NOT NULL PRIMARY KEY,"  
             + "fname varchar(30)," + "lname varchar(30),"  
             + "age  int(2)NOT NULL"
             +")  ENGINE=InnoDB DEFAULT CHARSET=utf8;";                 
     String sqldrop= "drop table if exists mysqlVisitor1A";
     String sqlQuery  ="Select * from mysqlVisitor1A";
     String strInsert0 ="INSERT INTO  mysqlVisitor1A values (101,'John', 'Doe', 40)";
     String strInsert1="INSERT INTO  mysqlVisitor1A values(102,'Peter', 'Pan', 44)"; 
      String strInsert2 ="INSERT INTO  mysqlVisitor1A values(103,'Jean', 'Zenis', 29)"; 
      String strInsert3 ="INSERT INTO  mysqlVisitor1A values(104,'Savita', 'Jha', 34)"; 
      String [] strInsert = new String[]{strInsert1, strInsert2, strInsert3, strInsert0}; 
      String strBuff = null; 
      // connecting to db
      try {
          // connection>>statement >> Resultset 
       c = DriverManager.getConnection(dbURL,user,pwd);
       // drop table if exists visitor1A;
      st = c.createStatement();
      st.execute(sqldrop);
     //create table mysqlVisitor1B(
      st = c.createStatement();
     st.execute(sqlCreate);
   
     //
     for(int i =0; i< strInsert.length; i++)
     {
         strBuff = strInsert[i];
       st = c.createStatement();
       st.execute(strBuff);
     }
      //Select * from mysqlVisitor1B
       st = c.createStatement();
       rs = st.executeQuery(sqlQuery);
       ResultSetMetaData metaData = rs.getMetaData();
       int numberOfColumns = metaData.getColumnCount();  
       //int rownum = metaData.
// get name of the columuns 
         for ( int i = 1; i <= numberOfColumns; i++ )
         {
         System.out.printf( "%-4s\t", 
                 metaData.getColumnName( i ) );
         }
         System.out.println();
        //
      Process.loaddata(rs, numberOfColumns);
       //
       Process.loaddata(rs, numberOfColumns);
       System.out.println("dropping table at the end");
       Thread.sleep(50000);
       //dropping table at the end
        st = c.createStatement();
        st.execute(sqldrop);
       Process.loaddata(rs, numberOfColumns);

      } catch (SQLException ex) { ex.getErrorCode();
            String message = ex.getMessage();  
            System.out.println(message); 
      } finally {
          System.out.println("going through final block"); 
            try {
                 if (st== null || st.isClosed()) {
                } else {
                  st.close();
              }
                if (c != null && !c.isClosed()) {
                    c.close(); }
            } catch (SQLException ex) { ex.getErrorCode();
                  ex.getMessage();              
            }
        }
      
      System.out.println("dis-Connected to  database successfully"); 
    } 
      
}
class Process {
       //
 public static void loaddata(ResultSet x1 , int n2)
        throws SQLException
{ int size = 0; 
    while ( x1.next() ) 
         {
             size++; 
            for ( int i = 1; i <= n2; i++ )
                try {
          System.out.printf( "%-4s\t", x1.getObject( i ));
          } catch (SQLException ex) {
            Logger.getLogger(Process.class.getName()).
             log(Level.SEVERE, null, ex);
                }
            System.out.println();
         }
    //displayMap(list1); 
    System.out.println("processed rows :: "+ size);
}

}