Scrollable ResultSet : ResultSet « Database SQL JDBC « Java






Scrollable ResultSet

  
/*
Copyright 2003 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
Use of this software is authorized pursuant to the terms of the license found at
http://developer.java.sun.com/berkeley_license.html.

Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.  
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are permitted provided that the following conditions are met: 

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be used to endorse or promote products derived from this software without
specific prior written permission.

This software is provided "AS IS," without a warranty of any kind.  
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ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
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AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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*/


/*
 * Copyright 2003 Sun Microsystems, Inc.  ALL RIGHTS RESERVED.
 * Use of this software is authorized pursuant to the terms of the license found at
 * http://developer.java.sun.com/berkeley_license.html.
 */ 

import java.sql.*;

public class ScrollableResultSet {

  public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;
    Statement stmt;
    try {

      Class.forName("myDriver.ClassName");

    } catch(java.lang.ClassNotFoundException e) {
      System.err.print("ClassNotFoundException: ");
      System.err.println(e.getMessage());
    }

    try {

      con = DriverManager.getConnection(url,
              "myLogin", "myPassword");

      stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
                       ResultSet.CONCUR_READ_ONLY);

            ResultSet srs = stmt.executeQuery("SELECT * FROM COFFEES");

      srs.absolute(4); 
      int rowNum = srs.getRow(); // rowNum should be 4
      System.out.println("rowNum should be 4 " + rowNum);
      srs.relative(-3); 
      rowNum = srs.getRow(); // rowNum should be 1
      System.out.println("rowNum should be 1 " + rowNum);
      srs.relative(2); 
      rowNum = srs.getRow(); // rowNum should be 3
      System.out.println("rowNum should be 3 " + rowNum);

      srs.absolute(1);
      System.out.println("after last? " + srs.isAfterLast() );
      if (!srs.isAfterLast()) {
        String name = srs.getString("COF_NAME");
        float price = srs.getFloat("PRICE");
        System.out.println(name + "     " + price);
      }

      srs.afterLast();
      while (srs.previous()) {
        String name = srs.getString("COF_NAME");
        float price = srs.getFloat("PRICE");
        System.out.println(name + "     " + price);
      }

      srs.close();
      stmt.close();
      con.close();

    } catch(BatchUpdateException b) {
      System.err.println("-----BatchUpdateException-----");
      System.err.println("SQLState:  " + b.getSQLState());
      System.err.println("Message:  " + b.getMessage());
      System.err.println("Vendor:  " + b.getErrorCode());
      System.err.print("Update counts:  ");
      int [] updateCounts = b.getUpdateCounts();
      for (int i = 0; i < updateCounts.length; i++) {
        System.err.print(updateCounts[i] + "   ");
      }
      System.out.println("");

    } catch(SQLException ex) {
      System.err.println("-----SQLException-----");
      System.err.println("SQLState:  " + ex.getSQLState());
      System.err.println("Message:  " + ex.getMessage());
      System.err.println("Vendor:  " + ex.getErrorCode());
    }
  }
}





           
         
    
  








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