use strict;
use warnings;
-use Class::C3;
-use base qw/DBIx::Class::Storage::DBI/;
-
-use Carp::Clan qw/^DBIx::Class/;
-
-=head1 NAME
-
-DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
-
-=head1 SYNOPSIS
-
-This subclass supports L<DBD::Sybase> for real Sybase databases. If you are
-using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to
-L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>.
-
-=head1 DESCRIPTION
-
-If your version of Sybase does not support placeholders, then your storage
-will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can
-also enable that driver explicitly, see the documentation for more details.
-
-With this driver there is unfortunately no way to get the C<last_insert_id>
-without doing a C<select max(col)>.
-
-But your queries will be cached.
-
-A recommended L<DBIx::Class::Storage::DBI/connect_info> setting:
-
- on_connect_call => [qw/datetime_setup blob_setup/]
-
-=head1 METHODS
-
-=cut
+use base qw/
+ DBIx::Class::Storage::DBI::Sybase::Base
+ DBIx::Class::Storage::DBI::NoBindVars
+/;
+use mro 'c3';
sub _rebless {
- my $self = shift;
+ my $self = shift;
- if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') {
my $dbtype = eval {
- @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
- } || '';
-
- my $exception = $@;
- $dbtype =~ s/\W/_/gi;
- my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
-
- if (!$exception && $dbtype && $self->load_optional_class($subclass)) {
- bless $self, $subclass;
- $self->_rebless;
- } else {
- # real Sybase
- if (not $self->dbh->{syb_dynamic_supported}) {
- bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars';
- $self->_rebless;
- }
- $self->connect_call_datetime_setup;
- $self->connect_call_blob_setup;
- }
- }
-}
-
-sub _populate_dbh {
- my $self = shift;
- $self->next::method(@_);
- $self->connect_call_datetime_setup;
- $self->connect_call_blob_setup;
- 1;
-}
-
-=head2 connect_call_blob_setup
-
-Used as:
-
- on_connect_call => 'blob_setup'
-
-Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary
-instead of as a hex string.
-
-Recommended.
-
-=cut
-
-sub connect_call_blob_setup {
- my $self = shift;
- my $dbh = $self->_dbh;
- $dbh->{syb_binary_images} = 1;
-}
-
-=head2 connect_call_datetime_setup
-
-Used as:
-
- on_connect_call => 'datetime_setup'
-
-In L<DBIx::Class::Storage::DBI/connect_info> to set:
-
- $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
- $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080
-
-On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using
-L<DateTime::Format::Sybase>, which you will need to install.
-
-This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
-C<SMALLDATETIME> columns only have minute precision.
-
-=cut
-
-{
- my $old_dbd_warned = 0;
-
- sub connect_call_datetime_setup {
- my $self = shift;
- my $dbh = $self->_dbh;
-
- if ($dbh->can('syb_date_fmt')) {
- $dbh->syb_date_fmt('ISO_strict');
- } elsif (not $old_dbd_warned) {
- carp "Your DBD::Sybase is too old to support ".
- "DBIx::Class::InflateColumn::DateTime, please upgrade!";
- $old_dbd_warned = 1;
+ @{$self->_get_dbh
+ ->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})
+ }[2]
+ };
+ unless ( $@ ) {
+ $dbtype =~ s/\W/_/gi;
+ my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
+ if ($self->load_optional_class($subclass) && !$self->isa($subclass)) {
+ bless $self, $subclass;
+ $self->_rebless;
+ }
}
-
- $dbh->do('set dateformat mdy');
-
- 1;
- }
}
-sub datetime_parser_type { "DateTime::Format::Sybase" }
-
sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
-
- # sorry, there's no other way!
- my $sth = $dbh->prepare_cached("select max($col) from ".$source->from);
- return ($dbh->selectrow_array($sth))[0];
+ my ($self, $dbh, $source, $col) = @_;
+ return ($dbh->selectrow_array('select @@identity'))[0];
}
-# previous implementation of limited count for Sybase, does not include
-# count_grouped.
-
-#sub _copy_attributes_for_count {
-# my ($self, $source, $attrs) = @_;
-# my %attrs = %$attrs;
-#
-# # take off any column specs, any pagers, record_filter is cdbi, and no point of ordering a count
-# delete @attrs{qw/select as rows offset page order_by record_filter/};
-#
-# return \%attrs;
-#}
-#
-#=head2 count
-#
-#Counts for limited queries are emulated by executing select queries and
-#returning the number of successful executions minus the offset.
-#
-#This is necessary due to the limitations of Sybase.
-#
-#=cut
-#
-#sub count {
-# my $self = shift;
-# my ($source, $attrs) = @_;
-#
-# my $new_attrs = $self->_copy_attributes_for_count($source, $attrs);
-#
-# if (exists $attrs->{rows}) {
-# my $offset = $attrs->{offset} || 0;
-# my $total = $attrs->{rows} + $offset;
-#
-# my $first_pk = ($source->primary_columns)[0];
-#
-# $new_attrs->{select} = $first_pk ? "me.$first_pk" : 1;
-#
-# my $tmp_rs = $source->resultset_class->new($source, $new_attrs);
-#
-# $self->dbh->{syb_rowcount} = $total;
-#
-# my $count = 0;
-# $count++ while $tmp_rs->cursor->next;
-#
-# $self->dbh->{syb_rowcount} = 0;
-#
-# return $count - $offset;
-# } else {
-# # overwrite the selector
-# $new_attrs->{select} = { count => '*' };
-#
-# my $tmp_rs = $source->resultset_class->new($source, $new_attrs);
-# my ($count) = $tmp_rs->cursor->next;
-#
-# # if the offset/rows attributes are still present, we did not use
-# # a subquery, so we need to make the calculations in software
-# $count -= $attrs->{offset} if $attrs->{offset};
-# $count = $attrs->{rows} if $attrs->{rows} and $attrs->{rows} < $count;
-# $count = 0 if ($count < 0);
-#
-# return $count;
-# }
-#}
-
1;
-=head1 DATES
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
-See L</connect_call_datetime_setup> to setup date formats
-for L<DBIx::Class::InflateColumn::DateTime>.
+=head1 SYNOPSIS
+
+This subclass supports L<DBD::Sybase> for real Sybase databases. If
+you are using an MSSQL database via L<DBD::Sybase>, see
+L<DBIx::Class::Storage::DBI::Sybase::MSSQL>.
-=head1 IMAGE AND TEXT COLUMNS
+=head1 CAVEATS
-See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info>
-setting you need to work with C<IMAGE> columns.
+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.
-Due to limitations in L<DBD::Sybase> and this driver, it is only possible to
-select one C<TEXT> or C<IMAGE> column at a time.
+More importantly this means that caching of prepared statements is explicitly
+disabled, as the interpolation renders it useless.
=head1 AUTHORS
-See L<DBIx::Class/CONTRIBUTORS>.
+Brandon L Black <blblack@gmail.com>
+
+Justin Hunter <justin.d.hunter@gmail.com>
=head1 LICENSE
You may distribute this code under the same terms as Perl itself.
=cut
-# vim:sts=2 sw=2:
projects / dbsrgits/DBIx-Class.git / blobdiff