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package DBIx::Class::Storage::DBI::SQLite;
use strict;
use warnings;
use base qw/DBIx::Class::Storage::DBI/;
use mro 'c3';
use DBIx::Class::Carp;
use Scalar::Util 'looks_like_number';
use namespace::clean;
__PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::SQLite');
__PACKAGE__->sql_limit_dialect ('LimitOffset');
__PACKAGE__->sql_quote_char ('"');
__PACKAGE__->datetime_parser_type ('DateTime::Format::SQLite');
sub backup {
require File::Spec;
require File::Copy;
require POSIX;
my ($self, $dir) = @_;
$dir ||= './';
## Where is the db file?
my $dsn = $self->_dbi_connect_info()->[0];
my $dbname = $1 if($dsn =~ /dbname=([^;]+)/);
if(!$dbname)
{
$dbname = $1 if($dsn =~ /^dbi:SQLite:(.+)$/i);
}
$self->throw_exception("Cannot determine name of SQLite db file")
if(!$dbname || !-f $dbname);
# print "Found database: $dbname\n";
# my $dbfile = file($dbname);
my ($vol, $dbdir, $file) = File::Spec->splitpath($dbname);
# my $file = $dbfile->basename();
$file = POSIX::strftime("%Y-%m-%d-%H_%M_%S", localtime()) . $file;
$file = "B$file" while(-f $file);
mkdir($dir) unless -f $dir;
my $backupfile = File::Spec->catfile($dir, $file);
my $res = File::Copy::copy($dbname, $backupfile);
$self->throw_exception("Backup failed! ($!)") if(!$res);
return $backupfile;
}
sub _exec_svp_begin {
my ($self, $name) = @_;
$self->_dbh->do("SAVEPOINT $name");
}
sub _exec_svp_release {
my ($self, $name) = @_;
$self->_dbh->do("RELEASE SAVEPOINT $name");
}
sub _exec_svp_rollback {
my ($self, $name) = @_;
# For some reason this statement changes the value of $dbh->{AutoCommit}, so
# we localize it here to preserve the original value.
local $self->_dbh->{AutoCommit} = $self->_dbh->{AutoCommit};
$self->_dbh->do("ROLLBACK TRANSACTION TO SAVEPOINT $name");
}
sub deployment_statements {
my $self = shift;
my ($schema, $type, $version, $dir, $sqltargs, @rest) = @_;
$sqltargs ||= {};
if (
! exists $sqltargs->{producer_args}{sqlite_version}
and
my $dver = $self->_server_info->{normalized_dbms_version}
) {
$sqltargs->{producer_args}{sqlite_version} = $dver;
}
$self->next::method($schema, $type, $version, $dir, $sqltargs, @rest);
}
sub bind_attribute_by_data_type {
$_[1] =~ /^ (?: int(?:eger)? | (?:tiny|small|medium)int ) $/ix
? do { require DBI; DBI::SQL_INTEGER() }
: undef
;
}
# DBD::SQLite (at least up to version 1.31 has a bug where it will
# non-fatally nummify a string value bound as an integer, resulting
# in insertions of '0' into supposed-to-be-numeric fields
# Since this can result in severe data inconsistency, remove the
# bind attr if such a sitation is detected
#
# FIXME - when a DBD::SQLite version is released that eventually fixes
# this sutiation (somehow) - no-op this override once a proper DBD
# version is detected
sub _dbi_attrs_for_bind {
my ($self, $ident, $bind) = @_;
my $bindattrs = $self->next::method($ident, $bind);
for (0.. $#$bindattrs) {
if (
defined $bindattrs->[$_]
and
defined $bind->[$_][1]
and
$bindattrs->[$_] eq DBI::SQL_INTEGER()
and
! looks_like_number ($bind->[$_][1])
) {
carp_unique( sprintf (
"Non-numeric value supplied for column '%s' despite the numeric datatype",
$bind->[$_][0]{dbic_colname} || "# $_"
) );
undef $bindattrs->[$_];
}
}
return $bindattrs;
}
=head2 connect_call_use_foreign_keys
Used as:
on_connect_call => 'use_foreign_keys'
In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to turn on foreign key
(including cascading) support for recent versions of SQLite and L<DBD::SQLite>.
Executes:
PRAGMA foreign_keys = ON
See L<http://www.sqlite.org/foreignkeys.html> for more information.
=cut
sub connect_call_use_foreign_keys {
my $self = shift;
$self->_do_query(
'PRAGMA foreign_keys = ON'
);
}
1;
=head1 NAME
DBIx::Class::Storage::DBI::SQLite - Automatic primary key class for SQLite
=head1 SYNOPSIS
# In your table classes
use base 'DBIx::Class::Core';
__PACKAGE__->set_primary_key('id');
=head1 DESCRIPTION
This class implements autoincrements for SQLite.
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
=head1 LICENSE
You may distribute this code under the same terms as Perl itself.
=cut
|
