Add set_ansi_mode POD

[dbsrgits/DBIx-Class-Historic.git] / lib / DBIx / Class / Storage / DBI / mysql.pm

diff --git a/lib/DBIx/Class/Storage/DBI/mysql.pm b/lib/DBIx/Class/Storage/DBI/mysql.pm
index fa0419f..2e4a69d 100644 (file)
--- a/lib/DBIx/Class/Storage/DBI/mysql.pm
+++ b/lib/DBIx/Class/Storage/DBI/mysql.pm
@@ -3,16 +3,27 @@ package DBIx::Class::Storage::DBI::mysql;
 use strict;
 use warnings;
 
-use base qw/DBIx::Class::Storage::DBI/;
+use base qw/
+  DBIx::Class::Storage::DBI::MultiColumnIn
+  DBIx::Class::Storage::DBI::AmbiguousGlob
+  DBIx::Class::Storage::DBI
+/;
+use mro 'c3';
 
-# __PACKAGE__->load_components(qw/PK::Auto/);
+__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::MySQL');
 
 sub with_deferred_fk_checks {
   my ($self, $sub) = @_;
 
-  $self->dbh->do('SET foreign_key_checks=0');
+  $self->_do_query('SET FOREIGN_KEY_CHECKS = 0');
   $sub->();
-  $self->dbh->do('SET foreign_key_checks=1');
+  $self->_do_query('SET FOREIGN_KEY_CHECKS = 1');
+}
+
+sub connect_call_set_ansi_mode {
+  my $self = shift;
+  $self->_do_query(q|SET SQL_MODE = 'ANSI,TRADITIONAL'|);
+  $self->_do_query(q|SET SQL_AUTO_IS_NULL = 0|);
 }
 
 sub _dbh_last_insert_id {
@@ -41,7 +52,7 @@ sub _svp_rollback {
 
     $self->dbh->do("ROLLBACK TO SAVEPOINT $name")
 }
- 
+
 sub is_replicating {
     my $status = shift->dbh->selectrow_hashref('show slave status');
     return ($status->{Slave_IO_Running} eq 'Yes') && ($status->{Slave_SQL_Running} eq 'Yes');
@@ -51,25 +62,35 @@ sub lag_behind_master {
     return shift->dbh->selectrow_hashref('show slave status')->{Seconds_Behind_Master};
 }
 
+# MySql can not do subquery update/deletes, only way is slow per-row operations.
+# This assumes you have set proper transaction isolation and use innodb.
+sub _subq_update_delete {
+  return shift->_per_row_update_delete (@_);
+}
+
 1;
 
 =head1 NAME
 
-DBIx::Class::Storage::DBI::mysql - Automatic primary key class for MySQL
+DBIx::Class::Storage::DBI::mysql - Storage::DBI class implementing MySQL specifics
 
 =head1 SYNOPSIS
 
-  # In your table classes
-  __PACKAGE__->load_components(qw/PK::Auto Core/);
-  __PACKAGE__->set_primary_key('id');
+Storage::DBI autodetects the underlying MySQL database, and re-blesses the
+C<$storage> object into this class.
+
+  my $schema = MyDatbase->connect( $dsn, $user, $pass, { set_ansi_mode => 1 } );
 
 =head1 DESCRIPTION
 
-This class implements autoincrements for MySQL.
+This class implements MySQL specific bits of L<DBIx::Class::Storage::DBI>.
+
+It also provides a one-stop macro that sets session variables such that
+MySQL behaves more predictably as far as the SQL standard is concerned.
 
 =head1 AUTHORS
 
-Matt S. Trout <mst@shadowcatsystems.co.uk>
+See L<DBIx::Class/CONTRIBUTORS>
 
 =head1 LICENSE