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I'm having problems with the boolean type. I want
to work with boolean's, but it seems like
PreparedStatement.setBoolean is failing . . .

import java.sql.*;

public class BooleanTest {

    public static void main( String[] args )
    {

        Connection con  = null;
        Statement  stmt = null;
        ResultSet  rs   = null;

        try {

            // Load the driver, get a connection, create statement, run
query, and print.

            Class.forName("org.enhydra.instantdb.jdbc.idbDriver");
            con = DriverManager.getConnection(
"jdbc:idb:/tmp/idbtest/discRack.prp" );

            PreparedStatement ps = con.prepareStatement( "SELECT * FROM
booltest WHERE tall = ?" );

            ps.setBoolean( 1, true);
            rs = ps.executeQuery();

            while( rs.next()) {
                System.out.println( rs.getString( "name" ) + "\t" +
rs.getBoolean( "tall" ) );
            }

        }
        catch(ClassNotFoundException e) {
            System.err.println( "Couldn't load the driver: " +
e.getMessage());
        }
        catch(SQLException e) {
            System.err.println( "SQLException caught: " + e.getMessage());
        }
    }
}

>From the table:

d org.enhydra.instantdb.jdbc.idbDriver;
o jdbc:idb=/tmp/idbtest/discRack.prp;
e drop table booltest;
e create table booltest(
    oid int primary key,
    name varchar(30),
    tall boolean );
e insert into booltest values ( 1, "Otis", "false" );
e insert into booltest values ( 2, "Ollie", "true" );
q  select booltest.* from booltest;
q  select booltest.* from booltest WHERE tall="false";
q  select booltest.* from booltest WHERE tall="true";
c close;

Where the error is  . . .

cicero (611) java BooleanTest
Enhydra InstantDB - Version 3.14
The Initial Developer of the Original Code is Lutris Technologies Inc.
Portions created by Lutris are Copyright (C) 1997-2000 Lutris Technologies,
Inc.
All Rights Reserved.
main SELECT * FROM booltest WHERE tall = true
main java.lang.ClassCastException: java.lang.Boolean
SQLException caught: java.lang.Boolean

Any hints ?

Peter


``````````````````````
Peter Darrah
Staff Engineer
Lutris Technologies       http://www.lutris.com
Sponsors of Enhydra    http://www.enhydra.org
(831) 460-7359

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