X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FSybase%2FMicrosoft_SQL_Server.pm;h=b0cdb2d0904cc1ab1937be520c11a65bc9f6e2b0;hb=8273e845426f0187b4ad6c4a1b42286fa09a648f;hp=d4485a397f72bebb97dcff8cffcbbcd7572d9c97;hpb=d4483998dff1af8eff35b3c5398f564a9a1fb9d8;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm b/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
index d4485a3..b0cdb2d 100644
--- a/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
+++ b/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
@@ -3,36 +3,156 @@ package DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server;
 use strict;
 use warnings;
 
-use base qw/DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server DBIx::Class::Storage::DBI::Sybase/;
+use base qw/
+  DBIx::Class::Storage::DBI::Sybase
+  DBIx::Class::Storage::DBI::MSSQL
+/;
+use mro 'c3';
 
-1;
+use DBIx::Class::Carp;
 
 =head1 NAME
 
-DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server - Storage::DBI subclass for MSSQL via
-DBD::Sybase
+DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server - Support for Microsoft
+SQL Server via DBD::Sybase
 
 =head1 SYNOPSIS
 
-This subclass supports MSSQL connected via L<DBD::Sybase>.
+This subclass supports MSSQL server connections via L<DBD::Sybase>.
+
+=head1 DESCRIPTION
+
+This driver tries to determine whether your version of L<DBD::Sybase> and
+supporting libraries (usually FreeTDS) support using placeholders, if not the
+storage will be reblessed to
+L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::NoBindVars>.
+
+The MSSQL specific functionality is provided by
+L<DBIx::Class::Storage::DBI::MSSQL>.
+
+=head1 METHODS
+
+=cut
+
+__PACKAGE__->datetime_parser_type(
+  'DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::DateTime::Format'
+);
+
+sub _rebless {
+  my $self = shift;
+  my $dbh  = $self->_get_dbh;
+
+  return if ref $self ne __PACKAGE__;
+  if (not $self->_use_typeless_placeholders) {
+    carp_once <<'EOF' unless $ENV{DBIC_MSSQL_FREETDS_LOWVER_NOWARN};
+Placeholders do not seem to be supported in your configuration of
+DBD::Sybase/FreeTDS.
+
+This means you are taking a large performance hit, as caching of prepared
+statements is disabled.
+
+Make sure to configure your server with "tds version" of 8.0 or 7.0 in
+/etc/freetds/freetds.conf .
+
+To turn off this warning, set the DBIC_MSSQL_FREETDS_LOWVER_NOWARN environment
+variable.
+EOF
+    require
+      DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::NoBindVars;
+    bless $self,
+      'DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::NoBindVars';
+    $self->_rebless;
+  }
+}
 
-  $schema->storage_type('::DBI::Sybase::Microsoft_SQL_Server');
-  $schema->connect_info('dbi:Sybase:....', ...);
+# invoked only if DBD::Sybase is compiled against FreeTDS
+sub _set_autocommit_stmt {
+  my ($self, $on) = @_;
 
-=head1 CAVEATS
+  return 'SET IMPLICIT_TRANSACTIONS ' . ($on ? 'OFF' : 'ON');
+}
 
-This storage driver uses L<DBIx::Class::Storage::DBI::NoBindVars> as a base.
-This means that bind variables will be interpolated (properly quoted of course)
-into the SQL query itself, without using bind placeholders.
+sub _get_server_version {
+  my $self = shift;
 
-More importantly this means that caching of prepared statements is explicitly
-disabled, as the interpolation renders it useless.
+  my $product_version = $self->_get_dbh->selectrow_hashref('master.dbo.xp_msver ProductVersion');
 
-=head1 AUTHORS
+  if ((my $version = $product_version->{Character_Value}) =~ /^(\d+)\./) {
+    return $version;
+  }
+  else {
+    $self->throw_exception(
+      "MSSQL Version Retrieval Failed, Your ProductVersion's Character_Value is missing or malformed!"
+    );
+  }
+}
+
+=head2 connect_call_datetime_setup
+
+Used as:
+
+  on_connect_call => 'datetime_setup'
+
+In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set:
+
+  $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
+
+On connection for use with L<DBIx::Class::InflateColumn::DateTime>
+
+This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
+C<SMALLDATETIME> columns only have minute precision.
+
+=cut
+
+sub connect_call_datetime_setup {
+  my $self = shift;
+  my $dbh = $self->_get_dbh;
+
+  if ($dbh->can('syb_date_fmt')) {
+    # amazingly, this works with FreeTDS
+    $dbh->syb_date_fmt('ISO_strict');
+  }
+  else{
+    carp_once
+      'Your DBD::Sybase is too old to support '
+    . 'DBIx::Class::InflateColumn::DateTime, please upgrade!';
+  }
+}
+
+
+package # hide from PAUSE
+  DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::DateTime::Format;
+
+my $datetime_parse_format  = '%Y-%m-%dT%H:%M:%S.%3NZ';
+my $datetime_format_format = '%Y-%m-%d %H:%M:%S.%3N'; # %F %T
+
+my ($datetime_parser, $datetime_formatter);
+
+sub parse_datetime {
+  shift;
+  require DateTime::Format::Strptime;
+  $datetime_parser ||= DateTime::Format::Strptime->new(
+    pattern  => $datetime_parse_format,
+    on_error => 'croak',
+  );
+  return $datetime_parser->parse_datetime(shift);
+}
+
+sub format_datetime {
+  shift;
+  require DateTime::Format::Strptime;
+  $datetime_formatter ||= DateTime::Format::Strptime->new(
+    pattern  => $datetime_format_format,
+    on_error => 'croak',
+  );
+  return $datetime_formatter->format_datetime(shift);
+}
+
+1;
 
-Brandon L Black <blblack@gmail.com>
+=head1 AUTHOR
 
-Justin Hunter <justin.d.hunter@gmail.com>
+See L<DBIx::Class/CONTRIBUTORS>.
 
 =head1 LICENSE