BUG #1005: JDBC cancelRowUpdates() sets column values to null

The following bug has been logged online:

Bug reference:      1005
Logged by:          Lars Tetzlaff
Email address:      lars.tetzlaff@gmx.net
PostgreSQL version: 7.4
Operating system:   linux 2.4.23 i686
Description:        JDBC cancelRowUpdates() sets column values to null
Details:

this sequence sets all but "plz" and "kategorie" to null, "kategorie" is changed to 0

  rs.first();
  rs.updateInt( "plz", 99999 );
  rs.cancelRowUpdates();
  rs.updateInt( "plz", 66666 );
  rs.updateRow();
  rs.beforeFirst();

Output before update:

  Kunde Lars Tetzlaff
  PLZ/Ort 51702 Bergneustadt
  Straße Bahnhofstr. 32 E
  Kategorie 1


Output after Update

 Kunde null
 PLZ/Ort 66666 null
 Straße null
 Kategorie 0

If i comment out the second updateInt, the data is OK.


java version "1.4.2_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_02-b03)
Java HotSpot(TM) Client VM (build 1.4.2_02-b03, mixed mode)


Table:

create table kunde
(
    name varchar( 30 ) not null primary key,
    plz integer,
    ort varchar(30),
    strasse varchar( 30 ),
    kategorie integer not null
);

insert into kunde values ( 'Lars Tetzlaff', 51702, 'Bergneustadt', 'Bahnhofstr. 32 E', 1 );



Programm:

import java.sql.*;

public class connect
{
    public static void main( String argv[] )
    {
    try {

        //Class.forName("org.postgresql.Driver");
        Connection db = DriverManager.getConnection( "jdbc:postgresql:tetzlaff",
                             "tetzlaff", "");

        db.setAutoCommit( false );

//         PreparedStatement pst = db.prepareStatement("insert into kunde values ( ?, " +
//                   "?, ?, ?, ? )");

//         pst.setString( 1, "Thomas Friese" );
//         pst.setInt( 2, 51580 );
//         pst.setString( 3, "Reichshof-Eckenhagen" );
//         pst.setString( 4, "Landwehrstr. 7" );
//         pst.setInt( 5, 3 );

//         pst.executeUpdate();

        Statement st = db.createStatement( ResultSet.TYPE_SCROLL_SENSITIVE,
                           ResultSet.CONCUR_UPDATABLE );

        ResultSet rs = st.executeQuery("SELECT * FROM kunde");

        if( rs.isBeforeFirst() ) {
        System.out.println( "Alles klar" );
        }
        else{
        System.out.println( "Wo bin ich denn?" );
        }

        while (rs.next()) {
        //System.out.print("Column 1 returned ");
        System.out.println( "Kunde " + rs.getString(1)
                    + "\nPLZ/Ort "
                    + rs.getInt(2) + " " + rs.getString(3)
                    + "\nStraße " +rs.getString( "STRASSE" )
                    + "\nKategorie " + rs.getInt( "kategorie" )
                    );
        }

        rs.first();
        rs.updateInt( "plz", 99999 );
        rs.cancelRowUpdates();
        rs.updateInt( "plz", 66666 );
        rs.updateRow();
        rs.beforeFirst();

        while (rs.next()) {
        //System.out.print("Column 1 returned ");
        System.out.println( "Kunde " + rs.getString(1)
                    + "\nPLZ/Ort "
                    + rs.getInt(2) + " " + rs.getString(3)
                    + "\nStraße " +rs.getString( "STRASSE" )
                    + "\nKategorie " + rs.getInt( "kategorie" )
                    );
        }

        rs.close();
        st.close();
    }
    catch( Exception ex ){
        System.out.println( "Exception" + ex );
    }

    }
}