Hi,
I want to create a 'Database' class which is a layer on top of Win32::OLE and also uses some other packages (see example).
Goal is to modify the behaviour of some methods, while all other Win32::OLE database-methods will be inherited and used as if Win32::OLE was called directory.
I don't exactly know how to do it.
I guess I lack knowledge of polymorphism/inheritance, bu do not have the time to learn that now. please help!
Thanx in advance
Rgds,
John

package Database;

use 5.008;
use strict;
use warnings;
use Win32::OLE::Variant;          # For timestamp readings
use Win32::ADO qw/CheckDBErrors/; # For ADO errorchecking

use base 'Win32::OLE'; # Inherit from 'Win32::OLE'


our $VERSION = '0.01';

# Local functions
sub _dbconnect {
    # Create database connection
    my $conn = CreateObject Win32::OLE "ADODB.Connection" || die "Crea
+teObject: $!";
    $conn->Open("<some DSN to a MSSQL database>");

    return $conn;
}

# Constructor
sub new {
   my $class = shift;
   ( bless {}, $class )->_init( {@_} );
}


sub _init($) {
   my ($self, $args) = @_;

   $self->{_dbh} = _dbconnect();

   $self;
}

# This method should replace the Win32::OLE 'Execute' method and add e
+rrorchecking to it. (doesn't work now!)
sub Execute {
   my ($self, $sql) = shift;

   my $rs = $self->{_dbh}->Execute($sql);
   my @dberrors = ();
   CheckDBErrors($self->{_dbh}, \@dberrors) or croak "SQL Failed at ",
+ __LINE__, "\n", @dberrors;

   return ($rs);
}

1;

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In reply to Help needed on OO module by j.goor

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