use strict;
use warnings;
+use Try::Tiny;
+use namespace::clean;
use base qw/DBIx::Class::Storage::DBI/;
+=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;
- } else { # probably real Sybase
- if (not $self->dbh->{syb_dynamic_supported}) {
- bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars';
- $self->_rebless;
- }
-
- $self->dbh->syb_date_fmt('ISO_strict');
- $self->dbh->do('set dateformat mdy');
}
}
}
-sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
+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;
- if (not $self->dbh->{syb_dynamic_supported}) {
- # @@identity works only if not using placeholders
- # Should this query be cached?
- return ($dbh->selectrow_array('select @@identity'))[0];
- }
+ my @isa = @{mro::get_linear_isa(ref $self)};
+ my $class = shift @isa; # this is our current ref
- # sorry, there's no other way!
- my $sth = $dbh->prepare_cached("select max($col) from ".$source->from);
- return ($dbh->selectrow_array($sth))[0];
-}
+ 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);
-sub datetime_parser_type { "DBIx::Class::Storage::DBI::Sybase::DateTime" }
+ bless ($self, $trait_class);
-1;
+ Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO;
-=head1 NAME
+ $self->_init(@_);
+ }
-DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
+ $self->next::method(@_);
+}
-=head1 SYNOPSIS
+sub _ping {
+ my $self = shift;
-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>.
+ my $dbh = $self->_dbh or return 0;
-=head1 CAVEATS
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
-If your version of Sybase does not support placeholders, then this storage
-driver uses L<DBIx::Class::Storage::DBI::NoBindVars> as a base,
+# FIXME if the main connection goes stale, does opening another for this statement
+# really determine anything?
-In which case, bind variables will be interpolated (properly quoted of course)
-into the SQL query itself, without using bind placeholders.
+ if ($dbh->{syb_no_child_con}) {
+ return try {
+ $self->_connect(@{$self->_dbi_connect_info || [] })
+ ->do('select 1');
+ 1;
+ }
+ catch {
+ 0;
+ };
+ }
-More importantly this means that caching of prepared statements is explicitly
-disabled, as the interpolation renders it useless.
+ return try {
+ $dbh->do('select 1');
+ 1;
+ }
+ catch {
+ 0;
+ };
+}
-If your version of Sybase B<DOES> support placeholders (check
-C<<$dbh->{syb_dynamic_supported}>> then unfortunately there's no way to get the
-C<last_insert_id> without doing a C<select max(col)>.
+sub _set_max_connect {
+ my $self = shift;
+ my $val = shift || 256;
-But your queries will be cached.
+ my $dsn = $self->_dbi_connect_info->[0];
-=head1 DATES
+ return if ref($dsn) eq 'CODE';
-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>.
+ if ($dsn !~ /maxConnect=/) {
+ $self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
+ my $connected = defined $self->_dbh;
+ $self->disconnect;
+ $self->ensure_connected if $connected;
+ }
+}
-You will need the L<DateTime::Format::Strptime> module if you are going to use
-L<DBIx::Class::InflateColumn::DateTime>.
+# 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;
+}
-=head1 AUTHORS
+# 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;
+}
-Brandon L Black <blblack@gmail.com>
+1;
-Justin Hunter <justin.d.hunter@gmail.com>
+=head1 AUTHORS
-Rafael Kitover <rkitover@cpan.org>
+See L<DBIx::Class/CONTRIBUTORS>.
=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