use strict;
use warnings;
+use Try::Tiny;
+use namespace::clean;
use base qw/DBIx::Class::Storage::DBI/;
-use Carp::Clan qw/^DBIx::Class/;
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Sybase - Base class for drivers using
+L<DBD::Sybase>
+
+=head1 DESCRIPTION
+
+This is the base class/dispatcher for Storage's designed to work with
+L<DBD::Sybase>
+
+=head1 METHODS
+
+=cut
sub _rebless {
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 $dbtype;
+ try {
+ $dbtype = @{$self->_get_dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
+ } catch {
+ $self->throw_exception("Unable to establish connection to determine database type: $_")
+ };
- my $exception = $@;
+ if ($dbtype) {
$dbtype =~ s/\W/_/gi;
- my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
- if (!$exception && $dbtype && $self->load_optional_class($subclass)) {
+ # saner class name
+ $dbtype = 'ASE' if $dbtype eq 'SQL_Server';
+
+ my $subclass = __PACKAGE__ . "::$dbtype";
+ if ($self->load_optional_class($subclass)) {
bless $self, $subclass;
$self->_rebless;
- } elsif (not $self->dbh->{syb_dynamic_supported}) {
- bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars';
- $self->_rebless;
}
}
}
-{
- my $old_dbd_warned = 0;
+sub _init {
+ # once the driver is determined see if we need to insert the DBD::Sybase w/ FreeTDS fixups
+ # this is a dirty version of "instance role application", \o/ DO WANT Moo \o/
+ my $self = shift;
+ if (! $self->isa('DBIx::Class::Storage::DBI::Sybase::FreeTDS') and $self->_using_freetds) {
+ require DBIx::Class::Storage::DBI::Sybase::FreeTDS;
- sub _populate_dbh {
- my $self = shift;
- $self->next::method(@_);
- my $dbh = $self->_dbh;
+ my @isa = @{mro::get_linear_isa(ref $self)};
+ my $class = shift @isa; # this is our current ref
- if ($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;
- }
+ my $trait_class = $class . '::FreeTDS';
+ mro::set_mro ($trait_class, 'c3');
+ no strict 'refs';
+ @{"${trait_class}::ISA"} = ($class, 'DBIx::Class::Storage::DBI::Sybase::FreeTDS', @isa);
- $dbh->do('set dateformat mdy');
+ bless ($self, $trait_class);
- 1;
- }
-}
+ Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO;
-sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
+ $self->_init(@_);
+ }
- # sorry, there's no other way!
- my $sth = $dbh->prepare_cached("select max($col) from ".$source->from);
- return ($dbh->selectrow_array($sth))[0];
+ $self->next::method(@_);
}
-sub count {
- my ($self, $source, $attrs) = @_;
-
- if (exists $attrs->{rows}) {
- my $new_attrs = $self->_trim_attributes_for_count($source, $attrs);
-
- $new_attrs->{select} = '1';
- $new_attrs->{as} = ['dummy'];
-
-# speed things up at least *a little*
- $new_attrs->{result_class} = 'DBIx::Class::ResultClass::HashRefInflator';
+sub _ping {
+ my $self = shift;
- my $offset = $attrs->{offset} || 0;
- my $total = $attrs->{rows} + $offset;
-
- $self->dbh->do("set rowcount $total");
+ my $dbh = $self->_dbh or return 0;
- my $tmp_rs = $source->resultset_class->new($source, $new_attrs);
-
- my $count = 0;
- $count++ while $tmp_rs->cursor->next;
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
- $self->dbh->do("set rowcount 0");
+# FIXME if the main connection goes stale, does opening another for this statement
+# really determine anything?
- return $count;
+ if ($dbh->{syb_no_child_con}) {
+ return try {
+ $self->_connect->do('select 1');
+ 1;
+ }
+ catch {
+ 0;
+ };
}
- return $self->next::method(@_);
+ return try {
+ $dbh->do('select 1');
+ 1;
+ }
+ catch {
+ 0;
+ };
}
-sub datetime_parser_type { "DBIx::Class::Storage::DBI::Sybase::DateTime" }
-
-1;
-
-=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.
+sub _set_max_connect {
+ my $self = shift;
+ my $val = shift || 256;
-With this driver there is unfortunately no way to get the C<last_insert_id>
-without doing a C<select max(col)>.
+ my $dsn = $self->_dbi_connect_info->[0];
-But your queries will be cached.
+ return if ref($dsn) eq 'CODE';
-=head1 DATES
+ if ($dsn !~ /maxConnect=/) {
+ $self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
+ my $connected = defined $self->_dbh;
+ $self->disconnect;
+ $self->ensure_connected if $connected;
+ }
+}
-On connection C<syb_date_fmt> is set to C<ISO_strict>, e.g.:
-C<2004-08-21T14:36:48.080Z> and C<dateformat> is set to C<mdy>, e.g.:
-C<08/13/1979 18:08:55.080>.
+# Whether or not DBD::Sybase was compiled against FreeTDS. If false, it means
+# the Sybase OpenClient libraries were used.
+sub _using_freetds {
+ my $self = shift;
+ return ($self->_get_dbh->{syb_oc_version}||'') =~ /freetds/i;
+}
-This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
-C<SMALLDATETIME> columns only have minute precision.
+# Either returns the FreeTDS version against which DBD::Sybase was compiled,
+# 0 if can't be determined, or undef otherwise
+sub _using_freetds_version {
+ my $inf = shift->_get_dbh->{syb_oc_version};
+ return undef unless ($inf||'') =~ /freetds/i;
+ return $inf =~ /v([0-9\.]+)/ ? $1 : 0;
+}
-You will need the L<DateTime::Format::Strptime> module if you are going to use
-L<DBIx::Class::InflateColumn::DateTime>.
+1;
=head1 AUTHORS
You may distribute this code under the same terms as Perl itself.
=cut
-# vim:sts=2 sw=2:
projects / dbsrgits/DBIx-Class.git / blobdiff