use strict;
use warnings;
-use base qw/DBIx::Class::Storage::DBI::MultiColumnIn/;
+use base qw/
+ DBIx::Class::Storage::DBI::MultiColumnIn
+ DBIx::Class::Storage::DBI
+/;
+use mro 'c3';
-__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::MySQL');
+__PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::MySQL');
+__PACKAGE__->sql_limit_dialect ('LimitXY');
+__PACKAGE__->sql_quote_char ('`');
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_strict_mode {
+ my $self = shift;
+
+ # the @@sql_mode puts back what was previously set on the session handle
+ $self->_do_query(q|SET SQL_MODE = CONCAT('ANSI,TRADITIONAL,ONLY_FULL_GROUP_BY,', @@sql_mode)|);
+ $self->_do_query(q|SET SQL_AUTO_IS_NULL = 0|);
}
sub _dbh_last_insert_id {
$dbh->{mysql_insertid};
}
+# here may seem like an odd place to override, but this is the first
+# method called after we are connected *and* the driver is determined
+# ($self is reblessed). See code flow in ::Storage::DBI::_populate_dbh
+sub _run_connection_actions {
+ my $self = shift;
+
+ # default mysql_auto_reconnect to off unless explicitly set
+ if (
+ $self->_dbh->{mysql_auto_reconnect}
+ and
+ ! exists $self->_dbic_connect_attributes->{mysql_auto_reconnect}
+ ) {
+ $self->_dbh->{mysql_auto_reconnect} = 0;
+ }
+
+ $self->next::method(@_);
+}
+
+# we need to figure out what mysql version we're running
+sub sql_maker {
+ my $self = shift;
+
+ unless ($self->_sql_maker) {
+ my $maker = $self->next::method (@_);
+
+ # mysql 3 does not understand a bare JOIN
+ my $mysql_ver = $self->_get_dbh->get_info(18);
+ $maker->{_default_jointype} = 'INNER' if $mysql_ver =~ /^3/;
+ }
+
+ return $self->_sql_maker;
+}
+
sub sqlt_type {
return 'MySQL';
}
+sub deployment_statements {
+ my $self = shift;
+ my ($schema, $type, $version, $dir, $sqltargs, @rest) = @_;
+
+ $sqltargs ||= {};
+
+ if (
+ ! exists $sqltargs->{producer_args}{mysql_version}
+ and
+ my $dver = $self->_server_info->{normalized_dbms_version}
+ ) {
+ $sqltargs->{producer_args}{mysql_version} = $dver;
+ }
+
+ $self->next::method($schema, $type, $version, $dir, $sqltargs, @rest);
+}
+
sub _svp_begin {
my ($self, $name) = @_;
- $self->dbh->do("SAVEPOINT $name");
+ $self->_get_dbh->do("SAVEPOINT $name");
}
sub _svp_release {
my ($self, $name) = @_;
- $self->dbh->do("RELEASE SAVEPOINT $name");
+ $self->_get_dbh->do("RELEASE SAVEPOINT $name");
}
sub _svp_rollback {
my ($self, $name) = @_;
- $self->dbh->do("ROLLBACK TO SAVEPOINT $name")
+ $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
}
-
+
sub is_replicating {
- my $status = shift->dbh->selectrow_hashref('show slave status');
+ my $status = shift->_get_dbh->selectrow_hashref('show slave status');
return ($status->{Slave_IO_Running} eq 'Yes') && ($status->{Slave_SQL_Running} eq 'Yes');
}
sub lag_behind_master {
- return shift->dbh->selectrow_hashref('show slave status')->{Seconds_Behind_Master};
+ return shift->_get_dbh->selectrow_hashref('show slave status')->{Seconds_Behind_Master};
}
# MySql can not do subquery update/deletes, only way is slow per-row operations.
return shift->_per_row_update_delete (@_);
}
-# MySql chokes on things like:
-# COUNT(*) FROM (SELECT tab1.col, tab2.col FROM tab1 JOIN tab2 ... )
-# claiming that col is a duplicate column (it loses the table specifiers by
-# the time it gets to the *). Thus for any subquery count we select only the
-# primary keys of the main table in the inner query. This hopefully still
-# hits the indexes and keeps mysql happy.
-# (mysql does not care if the SELECT and the GROUP BY match)
-sub _grouped_count_select {
- my ($self, $source, $rs_args) = @_;
- my @pcols = map { join '.', $rs_args->{alias}, $_ } ($source->primary_columns);
- return @pcols ? \@pcols : $rs_args->{group_by};
-}
-
1;
=head1 NAME
-DBIx::Class::Storage::DBI::mysql - Automatic primary key class for MySQL
+DBIx::Class::Storage::DBI::mysql - Storage::DBI class implementing MySQL specifics
=head1 SYNOPSIS
- # In your table classes
- __PACKAGE__->load_components(qw/PK::Auto Core/);
- __PACKAGE__->set_primary_key('id');
+Storage::DBI autodetects the underlying MySQL database, and re-blesses the
+C<$storage> object into this class.
+
+ my $schema = MyDb::Schema->connect( $dsn, $user, $pass, { on_connect_call => 'set_strict_mode' } );
=head1 DESCRIPTION
-This class implements autoincrements for MySQL.
+This class implements MySQL specific bits of L<DBIx::Class::Storage::DBI>,
+like AutoIncrement column support and savepoints. Also it augments the
+SQL maker to support the MySQL-specific C<STRAIGHT_JOIN> join type, which
+you can use by specifying C<< join_type => 'straight' >> in the
+L<relationship attributes|DBIx::Class::Relationship::Base/join_type>
+
+
+It also provides a one-stop on-connect macro C<set_strict_mode> which sets
+session variables such that MySQL behaves more predictably as far as the
+SQL standard is concerned.
+
+=head1 STORAGE OPTIONS
+
+=head2 set_strict_mode
+
+Enables session-wide strict options upon connecting. Equivalent to:
+
+ ->connect ( ... , {
+ on_connect_do => [
+ q|SET SQL_MODE = CONCAT('ANSI,TRADITIONAL,ONLY_FULL_GROUP_BY,', @@sql_mode)|,
+ q|SET SQL_AUTO_IS_NULL = 0|,
+ ]
+ });
=head1 AUTHORS
-Matt S. Trout <mst@shadowcatsystems.co.uk>
+See L<DBIx::Class/CONTRIBUTORS>
=head1 LICENSE