Greetings!

I need to create a derived class (call it myDBI) using DBI as the base class so I can override a few methods in the example "do". (Okay, assume, just for fun, that I wish to log the sql statement.) I've tried: 

package myDBI;

use strict;
use warnings;
use DBI;
our @ISA=("DBI");
use strict;
use warnings;

    our $AUTOLOAD;
    sub AUTOLOAD {
        warn "$AUTOLOAD\n";
         }; 

    sub connect {
        ### @_
        my $class=shift;
        my $self=DBI->connect(@_);
        bless $self;
        return $self;
         }; # connect

    sub do {
        my $self=shift;
        ### @_
        $_[0]=~ s{\bdbi\b}{zdbi}i;
        ### @_
        $self->SUPER::do(@_);
         }; # do

    1;

[download]

Using the following for a test 

#!

use lib '.';
use DBI;
use myDBI;
use strict;
use warnings;

my $sql_s=<<'__EOCreate__';
    CREATE TABLE dbi (JFF integer)
__EOCreate__

    my $Database_s='test.db';
    my (%dbh_h,%sth_h);
    { # Connect to DBI and create a table
        $dbh_h{DBI}=DBI->connect("DBI:SQLite:$Database_s","","",{Raise
+Error=>1,PrintError=>1,AutoCommit=>1,LongReadLen=>1024*1024})
            or die "Can't connect to 'DBI:SQLite:$Database_s'!";
        ### %dbh_h
        $dbh_h{DBI}->do($sql_s)
            or die $dbh_h{DBI}->errstr;
        { # Disconnect from the database
            $sth_h{$_}->finish() for (keys %sth_h);
            $dbh_h{$_}->commit() for (keys %dbh_h);
            $dbh_h{$_}->disconnect() for (keys %dbh_h);
             };
         };
    %dbh_h=(); %sth_h=();
    { # Connect to myDBI and create a table
        $dbh_h{myDBI}=myDBI->connect("DBI:SQLite:$Database_s","","",{R
+aiseError=>1,PrintError=>1,AutoCommit=>1,LongReadLen=>1024*1024})
            or die "Can't connect to 'DBI:SQLite:$Database_s'!";
        ### %dbh_h
        $dbh_h{myDBI}->do($sql_s)
            or die $dbh_h{myDBI}->errstr;
        { # Disconnect from the database
            $sth_h{$_}->finish() for (keys %sth_h);
            $dbh_h{$_}->commit() for (keys %dbh_h);
            $dbh_h{$_}->disconnect() for (keys %dbh_h);
             };
         };

[download]

I get 

C:\Code\Objects>perl Example_02.pl

commit ineffective with AutoCommit enabled at Example_02.pl line 24.
commit ineffective with AutoCommit at Example_02.pl line 24.

Can't locate auto/myDBI/SUPER/do.al in @INC (@INC contains: . C:/Perl/
+site/lib C:/Perl/lib) at myDBI.pm line 29

myDBI::DESTROY

[download]

So how do I create a derived class from DBI?

Thanks!

In reply to Deriving a class from DBI. by clueless newbie

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