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# Movable Type (r) Open Source (C) 2001-2012 Six Apart, Ltd.
# This program is distributed under the terms of the
# GNU General Public License, version 2.
#
# $Id$
package MT::ObjectDriverFactory;
use strict;
use base qw( MT::ErrorHandler );
use MT::ObjectDriver::Driver::DBI;
use MT::ObjectDriver::SQL;
# Mapping of aliases/identifiers to a particular implementation.
our $drivers = [
[ qr/(db[id]::)?(postgres|pg(sql)?)/ => 'Pg' ],
[ qr/(db[id]::)?mysql/ => 'mysql' ],
[ qr/(db[id]::)?sqlite/ => 'SQLite' ],
];
our @drivers;
sub new {
my $pkg = shift;
my $get_driver = $pkg->driver_for_class();
return $get_driver->();
}
our $DRIVER;
sub instance {
my $pkg = shift;
$DRIVER = $pkg->new unless $DRIVER;
return $DRIVER;
}
# Returns a coderef for an object driver that is suitable
# for the $class given. $class is optional
sub driver_for_class {
my $pkg = shift;
my ($class) = @_;
require MT::ObjectDriver::Driver::CacheWrapper;
my $driver_code = MT::ObjectDriver::Driver::CacheWrapper->wrap(
sub {
my $cfg = MT->config;
my $Password = $cfg->DBPassword;
my $Username = $cfg->DBUser;
my $dbd = $pkg->dbd_class;
my $driver = MT::ObjectDriver::Driver::DBI->new(
dbd => $dbd,
dsn => $dbd->dsn_from_config($cfg),
reuse_dbh => 1,
( $Username ? ( username => $Username ) : () ),
( $Password ? ( password => $Password ) : () ),
);
push @drivers, $driver;
return $driver;
},
$class
);
return $driver_code;
}
our $dbd_class;
sub dbd_class {
return $dbd_class if defined $dbd_class;
my $pkg = shift;
my ($type) = @_;
$type ||= MT->config('ObjectDriver');
my $dbd_class;
foreach my $driver (@$drivers) {
if ( ( lc $type ) =~ m/^$driver->[0]$/ ) {
$dbd_class = $driver->[1];
last;
}
}
unless ($dbd_class) {
my $all_drivers = MT->registry("object_drivers");
foreach my $driver (%$all_drivers) {
if ( my $re = $all_drivers->{$driver}{match} ) {
if ( ( lc $type ) =~ m/^$re$/ ) {
$dbd_class = $all_drivers->{$driver}{config_package};
last;
}
}
}
}
$dbd_class ||= $type;
die "Unsupported driver $type" unless $dbd_class;
$dbd_class = 'MT::ObjectDriver::Driver::DBD::' . $dbd_class
unless $dbd_class =~ m/::/;
eval "use $dbd_class;";
die "Unsupported driver $type: $@" if $@;
return $dbd_class;
}
sub configure {
my $pkg = shift;
$_->configure(@_) for @drivers;
}
sub cleanup {
if ( my $driver = $MT::Object::DRIVER ) {
if ( my $dbh = $driver->dbh ) {
$dbh->disconnect;
$driver->dbh->{private_set_names} = undef;
$driver->dbh(undef);
}
$MT::Object::DRIVER = undef;
$MT::Object::DBI_DRIVER = undef;
}
foreach my $driver (@drivers) {
if ( my $dbh = $driver->dbh ) {
$dbh->disconnect;
$driver->dbh->{private_set_names} = undef;
$driver->dbh(undef);
}
}
@drivers = ();
undef $DRIVER;
}
1;
__END__
=head1 NAME
MT::ObjectDriverFactory
=head1 AUTHOR & COPYRIGHT
Please see L<MT/AUTHOR & COPYRIGHT>.
=cut
|
