Placing null values in the database

Question

Hi
I'm using a PreparedStatement object to try to input a null value in the database. I'm using the following code :
pstmt = connection.prepareStatement("INSERT INTO Conditions (Deal,ConditionDate,Condition ) VALUES (?,?,?)");
pstmt.setString(1,"aDealName");
pstmt.setNull(2,Types.TIMESTAMP);
pstmt.setString(3,"aCondition");
pstmt.executeUpdate();
and I get the "SQL Data type out of range" error message.
Does anyone know what might be the problem?
Thanks for any help
LGS

Answer 1

Hi
Sorry for the lack of info.
I am using Microsoft Access 2000, the JDBC-ODBC driver v.4.00.6019
and my TableModel class is as follows:
public class MyTableModel2 extends AbstractTableModel
private Connection conn;
private Vector rows,columnHeads,firstColumn,columnTypes,columnWidths;
private Validation validate;
private String query;
private int numColumns;
String tableType;
String [] columnNamesFrontPage = {"Deal","Spread","Next Event Date","Closing Date"};
String [] columnNamesCommentsPage  = {"Date","Input By","Spread","Comment"};
String [] columnNamesTimetable = {"Date","Event"};
String [] columnNamesConditionsTable = {"Date","Condition"};
private DBase2 db2;
private String tableName,primKeyColName;
public MyTableModel2 ()
{} //Empty Constructor
public MyTableModel2 ( Connection dbConn,String aQuery,String table)
  conn = dbConn;
  rows = new Vector();
  columnHeads = new Vector();
  query = aQuery;
  tableType = table;
  firstColumn = new Vector();
  db2 = new DBase2 (dbConn);
  columnTypes = new Vector();
  columnWidths = new Vector();
  validate = new Validation();
}//End of Constructor
public int getColumnCount ()
  return columnHeads.size();
}//End of Method
public int getRowCount ()
  return rows.size();
}//End of Method
public Object getValueAt(int aRow, int aColumn)
  Vector row = (Vector)rows.elementAt(aRow);
  return row.elementAt(aColumn);
}//End of Method
public String getColumnName (int column)
  String columnName = "";
  if(tableType == null)
   columnName = columnHeads.get(column).toString();
  else if (tableType == "FrontPage")
   columnName = columnNamesFrontPage [column];
  else if (tableType == "CommentsPage")
   columnName = columnNamesCommentsPage [column];
  else if (tableType == "Timetable")
   columnName = columnNamesTimetable [column];
  else if (tableType == "ConditionsTable")
   columnName = columnNamesConditionsTable [column];
  return columnName;
}//End of Method
public void query() 
  try {
   Statement statement = conn.createStatement();
   ResultSet rs = statement.executeQuery(query);
   ResultSetMetaData rsmd = rs.getMetaData();
   tableName = rsmd.getTableName(1);
   Integer i2;
   boolean moreRecords = rs.next();
   for (int i = 1; i <= rsmd.getColumnCount(); ++i)
     if (i == 1)
      primKeyColName = rsmd.getColumnName(i);
     else
      columnHeads.addElement(rsmd.getColumnName(i));
      if (rsmd.getColumnTypeName(i).equals("DATETIME"))
       i2 = new Integer (8);
      else
       int i1 = rsmd.getColumnDisplaySize(i);
       i2 = new Integer (i1);
      columnWidths.add(i2);
      String colTypeName = rsmd.getColumnTypeName(i);
      columnTypes.addElement(colTypeName);
      //JOptionPane.showMessageDialog(null,"Column Width="+i2,"Column Types  ",JOptionPane.INFORMATION_MESSAGE);
   do {
      rows.addElement( getNextRow (rs,rsmd));
   while (rs.next() );
  catch ( SQLException sqlex )
    sqlex.printStackTrace();
  }//End of Method
private Vector getNextRow( ResultSet rs, ResultSetMetaData rsmd )
       throws SQLException
    Vector currentRow = new Vector();
     for ( int i = 1; i <= rsmd.getColumnCount(); ++i )
       Object o = rs.getObject(i);
       if (o == null)
         String emptyCell = "";
         currentRow.addElement(emptyCell);
       else if(o.getClass().toString().equalsIgnoreCase("class java.sql.Timestamp") )
         SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yy");
         String formatted = sdf.format(o);
         currentRow.addElement(formatted);
       else
         if (i == 1)
          firstColumn.addElement(o);
         else
         currentRow.addElement(o);
      return currentRow;
    }//End of Method
public void refresh ()
  rows.clear();
  firstColumn.clear();
  try {
   Statement statement = conn.createStatement();
   ResultSet rs = statement.executeQuery(query);
   ResultSetMetaData rsmd = rs.getMetaData();
   boolean moreRecords = rs.next();
   do {
      rows.addElement( getNextRow (rs,rsmd));
   while (rs.next() );
  catch ( SQLException sqlex )
    sqlex.printStackTrace();
  this.fireTableDataChanged();
}//End of Method
public boolean isCellEditable (int row, int col)
  return true;
}//End of Class
public void setValueAt(Object value, int row, int col)
   String objToString = value.toString();
   int columnWidth = Integer.parseInt(columnWidths.elementAt(col).toString());
   if(objToString.length() > columnWidth)
    validate.errorMessageDisplay("Maximum column width is "+columnWidth+" characters - Please retype","INPUT ERROR");
   else if (columnTypes.elementAt(col).toString().equals("DATETIME") && validate.validDateInput(objToString) == false)
    validate.errorMessageDisplay("Date is required in form dd/mm/yy - Please retype","INPUT ERROR");
   else if (columnTypes.elementAt(col).toString().equals("DOUBLE") && validate.validNumberInput(objToString) == false)
    validate.errorMessageDisplay("This column will accept numbers only - Please retype","INPUT ERROR");
   else
   //JOptionPane.showMessageDialog(null,columnTypes.elementAt(col).toString(),"Column Name  ",JOptionPane.INFORMATION_MESSAGE);
   Vector rowA = (Vector)rows.elementAt(row);
   rowA.setElementAt(value,col);
   fireTableCellUpdated(row, col);
   String newInput = value.toString();
   int id = Integer.parseInt(firstColumn.elementAt(row).toString());
   String colName = columnHeads.elementAt(col).toString();
   String query = "UPDATE "+tableName+" SET "+colName+" = '"+newInput+"' WHERE "+primKeyColName+" = "+id+"";
   db2.modifyDatabase(query);
   refresh();
  }//End of Method The method in which I am using PreparedStatement is:
public void updateConditionsTable (String aDealName, String aCondition) 
   int result = 0;
   try
    pstmt = connection.prepareStatement("INSERT INTO Conditions (Deal,ConditionDate,Condition )"+
    " VALUES (?,?,?)");
   // pstmt = connection.prepareStatement("INSERT INTO Conditions (Deal,ConditionDate,Condition )"+
   // " VALUES (?,?,?)");
    pstmt.setString(1,aDealName);
    pstmt.setNull(2,Types.INTEGER);
    pstmt.setString(3,aCondition);
    pstmt.executeUpdate();
   catch (SQLException sqlex ) {
     //sqlex.printStackTrace();
     String output = "YOUR INPUT IS NOT VALID - PLEASE TRY AGAIN\n";
     output = output + sqlex.toString();
     JOptionPane.showMessageDialog(null,output,"SQL Error",JOptionPane.INFORMATION_MESSAGE);
    //return result;
   }//Closes Method Once again, thanks for any help