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package DBIx::DBSchema::DBD::mysql;
use strict;
use vars qw($VERSION @ISA %typemap);
use DBIx::DBSchema::DBD;
$VERSION = '0.03';
@ISA = qw(DBIx::DBSchema::DBD);
%typemap = (
'TIMESTAMP' => 'DATETIME',
'SERIAL' => 'INTEGER',
'BOOL' => 'TINYINT',
'LONG VARBINARY' => 'LONGBLOB',
);
=head1 NAME
DBIx::DBSchema::DBD::mysql - MySQL native driver for DBIx::DBSchema
=head1 SYNOPSIS
use DBI;
use DBIx::DBSchema;
$dbh = DBI->connect('dbi:mysql:database', 'user', 'pass');
$schema = new_native DBIx::DBSchema $dbh;
=head1 DESCRIPTION
This module implements a MySQL-native driver for DBIx::DBSchema.
=cut
sub columns {
my($proto, $dbh, $table ) = @_;
my $sth = $dbh->prepare("SHOW COLUMNS FROM $table") or die $dbh->errstr;
$sth->execute or die $sth->errstr;
map {
$_->{'Type'} =~ /^(\w+)\(?([\d\,]+)?\)?( unsigned)?$/
or die "Illegal type: ". $_->{'Type'}. "\n";
my($type, $length) = ($1, $2);
[
$_->{'Field'},
$type,
$_->{'Null'},
$length,
$_->{'Default'},
$_->{'Extra'}
]
} @{ $sth->fetchall_arrayref( {} ) };
}
#sub primary_key {
# my($proto, $dbh, $table ) = @_;
# my $primary_key = '';
# my $sth = $dbh->prepare("SHOW INDEX FROM $table")
# or die $dbh->errstr;
# $sth->execute or die $sth->errstr;
# my @pkey = map { $_->{'Column_name'} } grep {
# $_->{'Key_name'} eq "PRIMARY"
# } @{ $sth->fetchall_arrayref( {} ) };
# scalar(@pkey) ? $pkey[0] : '';
#}
sub primary_key {
my($proto, $dbh, $table) = @_;
my($pkey, $unique_href, $index_href) = $proto->_show_index($dbh, $table);
$pkey;
}
sub unique {
my($proto, $dbh, $table) = @_;
my($pkey, $unique_href, $index_href) = $proto->_show_index($dbh, $table);
$unique_href;
}
sub index {
my($proto, $dbh, $table) = @_;
my($pkey, $unique_href, $index_href) = $proto->_show_index($dbh, $table);
$index_href;
}
sub _show_index {
my($proto, $dbh, $table ) = @_;
my $sth = $dbh->prepare("SHOW INDEX FROM $table")
or die $dbh->errstr;
$sth->execute or die $sth->errstr;
my $pkey = '';
my(%index, %unique);
foreach my $row ( @{ $sth->fetchall_arrayref({}) } ) {
if ( $row->{'Key_name'} eq 'PRIMARY' ) {
$pkey = $row->{'Column_name'};
} elsif ( $row->{'Non_unique'} ) { #index
push @{ $index{ $row->{'Key_name'} } }, $row->{'Column_name'};
} else { #unique
push @{ $unique{ $row->{'Key_name'} } }, $row->{'Column_name'};
}
}
( $pkey, \%unique, \%index );
}
=head1 AUTHOR
Ivan Kohler <ivan-dbix-dbschema@420.am>
=head1 COPYRIGHT
Copyright (c) 2000 Ivan Kohler
Copyright (c) 2000 Mail Abuse Prevention System LLC
All rights reserved.
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=head1 BUGS
=head1 SEE ALSO
L<DBIx::DBSchema>, L<DBIx::DBSchema::DBD>, L<DBI>, L<DBI::DBD>
=cut
1;
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