use strict;
use warnings;
-use mro 'c3';
-use base qw/
- DBIx::Class::Storage::DBI::Sybase::Base
- DBIx::Class::Storage::DBI::NoBindVars
-/;
+use Try::Tiny;
+
+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;
-
- my $dbtype = eval { @{$self->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;
- }
+ my $self = shift;
+
+ my $dbtype;
+ try {
+ $dbtype = @{$self->_get_dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
+ } catch {
+ $self->throw_exception("Unable to estable connection to determine database type: $_")
+ };
+
+ if ($dbtype) {
+ $dbtype =~ s/\W/_/gi;
+
+ # saner class name
+ $dbtype = 'ASE' if $dbtype eq 'SQL_Server';
+
+ my $subclass = __PACKAGE__ . "::$dbtype";
+ if ($self->load_optional_class($subclass)) {
+ bless $self, $subclass;
+ $self->_rebless;
}
+ }
}
-sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
- return ($dbh->selectrow_array('select @@identity'))[0];
+sub _ping {
+ my $self = shift;
+
+ my $dbh = $self->_dbh or return 0;
+
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
+
+ if ($dbh->{syb_no_child_con}) {
+# if extra connections are not allowed, then ->ping is reliable
+ my $ping = eval { $dbh->ping };
+ return $@ ? 0 : $ping;
+ }
+
+ my $rc = 1;
+ try {
+# XXX if the main connection goes stale, does opening another for this statement
+# really determine anything?
+ $dbh->do('select 1');
+ } catch {
+ $rc = 0;
+ };
+
+ return $rc;
}
-1;
+sub _set_max_connect {
+ my $self = shift;
+ my $val = shift || 256;
-=head1 NAME
+ my $dsn = $self->_dbi_connect_info->[0];
-DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
+ return if ref($dsn) eq 'CODE';
-=head1 SYNOPSIS
+ if ($dsn !~ /maxConnect=/) {
+ $self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
+ my $connected = defined $self->_dbh;
+ $self->disconnect;
+ $self->ensure_connected if $connected;
+ }
+}
-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>.
+=head2 using_freetds
-=head1 CAVEATS
+Whether or not L<DBD::Sybase> was compiled against FreeTDS. If false, it means
+the Sybase OpenClient libraries were used.
-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.
+=cut
-More importantly this means that caching of prepared statements is explicitly
-disabled, as the interpolation renders it useless.
+sub using_freetds {
+ my $self = shift;
-=head1 AUTHORS
+ return $self->_get_dbh->{syb_oc_version} =~ /freetds/i;
+}
+
+=head2 set_textsize
+
+When using FreeTDS and/or MSSQL, C<< $dbh->{LongReadLen} >> is not available,
+use this function instead. It does:
+
+ $dbh->do("SET TEXTSIZE $bytes");
+
+Takes the number of bytes, or uses the C<LongReadLen> value from your
+L<connect_info|DBIx::Class::Storage::DBI/connect_info> if omitted, lastly falls
+back to the C<32768> which is the L<DBD::Sybase> default.
-Brandon L Black <blblack@gmail.com>
+=cut
+
+sub set_textsize {
+ my $self = shift;
+ my $text_size = shift ||
+ eval { $self->_dbi_connect_info->[-1]->{LongReadLen} } ||
+ 32768; # the DBD::Sybase default
+
+ return unless defined $text_size;
+
+ $self->_dbh->do("SET TEXTSIZE $text_size");
+}
+
+1;
+
+=head1 AUTHORS
-Justin Hunter <justin.d.hunter@gmail.com>
+See L<DBIx::Class/CONTRIBUTORS>.
=head1 LICENSE