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Heng Xing Tian Tai Lab of Xi'an City (abbr, HXTT)

can not delete record
2005-07-11 00:00:00.0
below i post my code :

import java.util.*;
import java.sql.*;
import com.hxtt.sql.*;

public class backofficeDbfVerification {

Connection connection;
/** Creates a new instance of backofficeDbfVerification */
public backofficeDbfVerification(String path, Properties prop) throws SQLException {
try {
connection = DriverManager.getConnection("jdbc:DBF:/"+path, prop);
catch (ClassNotFoundException classnotfoundexception) {
System.out.println("could ot find HXTT class, make sure the classpath have been defined in your system !");

public void createGoodRecord(String table, int blth) throws SQLException {
Statement stmt = connection.createStatement();
String delete = "delete from '"+table+"' where VAL(substring(blth,3,4)+substring(blth,1,2)) < "+blth;
boolean bdelete = stmt.execute(delete);

public ResultSet querySomeData(String table) throws SQLException {
Statement stmt = connection.createStatement();
String query = "select * from '"+table+"' where VAL(substring(blth,3,4)+substring(blth,1,2)) < 200310";
ResultSet result = stmt.executeQuery(query);
return result;

public static void main (String args[]) {
Properties pp = new Properties();
pp.setProperty("user", "");
String path = "C:\\JATIM\\MLPOV2\\DKI\\temp\\SOREK";
String pathCopy = "C:\\JATIM\\MLPOV2\\DKI\\source\\SOREK";
try {
backofficeDbfVerification test = new backofficeDbfVerification(path, pp);
test.createGoodRecord("5462154", 200310);
catch(SQLException sqx) {
System.out.println("Error "+sqx.getMessage());


when i perform delete action, no record deleted form the file (the record still exist as i check the table using visual foxpro), but no record are retrieved too when i perform method querySomeData().

i really don't know what exactly happens, the record still exists after i deleted them, but norecords retrieved from query action....

please help...
Re:can not delete record
HXTT Support
2005-07-11 00:00:00.0
Because those rows are just marked with a DELETED flag according to Xbase stanadard, so that VFP can see those deleted rows. If you wish to remove those deleted rows permanently, you should use "PACK TABLE yourTable;" once.

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