#########
# Author: rmp
# Created: 2006-10-31
#
package ClearPress::driver::Pg;
use strict;
use warnings;
use base qw(ClearPress::driver);
use English qw(-no_match_vars);
use Carp;
use Readonly;
our $VERSION = q[476.1.1];
Readonly::Scalar our $TYPES => {
'primary key' => 'bigint unsigned not null auto_increment primary key',
};
sub dbh {
my $self = shift;
if(!$self->{dbh} ||
!$self->{dbh}->ping()) {
my $dsn = sprintf q(DBI:Pg:database=%s;host=%s;port=%s),
$self->{dbname} || q[],
$self->{dbhost} || q[localhost],
$self->{dbport} || q[3306];
eval {
$self->{dbh} = DBI->connect($dsn,
$self->{dbuser} || q[],
$self->{dbpass},
{RaiseError => 1,
AutoCommit => 0});
} or do {
croak qq[Failed to connect to $dsn using @{[$self->{dbuser}||q['']]}\n$EVAL_ERROR];
};
#########
# rollback any junk left behind if this is a cached handle
#
$self->{dbh}->rollback();
}
return $self->{dbh};
}
sub create {
my ($self, $query, @args) = @_;
my $dbh = $self->dbh();
$dbh->do($query, {}, @args);
my $idref = $dbh->selectall_arrayref('SELECT LAST_INSERT_ID()');
return $idref->[0]->[0];
}
sub create_table {
my ($self, $table_name, $ref) = @_;
return $self->SUPER::create_table($table_name, $ref, { engine=>'InnoDB'});
}
sub types {
return $TYPES;
}
sub bounded_select {
my ($self, $query, $len, $start) = @_;
if(defined $start && defined $len) {
$query .= qq[ LIMIT $start, $len];
} elsif(defined $len) {
$query .= qq[ LIMIT $len];
}
return $query;
}
1;
__END__
=head1 NAME
ClearPress::driver::Pg - Pg-specific implementation of the database abstraction layer
** WARNING! ALPHA CODE **
=head1 VERSION
$LastChangedRevision: 470 $
=head1 SYNOPSIS
=head1 DESCRIPTION
=head1 SUBROUTINES/METHODS
=head2 dbh - fetch a connected database handle
my $oDBH = $oDriver->dbh();
=head2 create - run a create query and return this objects primary key
my $iAssignedId = $oDriver->create($query)
=head2 create_table - Postgres-specific create_table
=head2 types - the whole type map
=head2 bounded_select - stub for select limited by number of rows and first-row position
my $bounded_select = $driver->bounded_select($unbounded_select, $rows, $start_row);
=head1 DIAGNOSTICS
=head1 CONFIGURATION AND ENVIRONMENT
=head1 DEPENDENCIES
=over
=item strict
=item warnings
=item base
=item ClearPress::driver
=back
=head1 INCOMPATIBILITIES
=head1 BUGS AND LIMITATIONS
=head1 AUTHOR
$Author: Roger Pettett$
=head1 LICENSE AND COPYRIGHT
Copyright (C) 2008 Roger Pettett
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.4 or,
at your option, any later version of Perl 5 you may have available.
=cut