1 package DBIx::Class::Storage::DBI::Sybase::ASE::NoBindVars;
7 DBIx::Class::Storage::DBI::NoBindVars
8 DBIx::Class::Storage::DBI::Sybase::ASE
11 use List::Util 'first';
12 use Scalar::Util 'looks_like_number';
17 $self->disable_sth_caching(1);
18 $self->_identity_method('@@IDENTITY');
19 $self->next::method (@_);
22 sub _fetch_identity_sql { 'SELECT ' . $_[0]->_identity_method }
24 my $number = sub { looks_like_number $_[0] };
26 my $decimal = sub { $_[0] =~ /^ [-+]? \d+ (?:\.\d*)? \z/x };
29 int => sub { $_[0] =~ /^ [-+]? \d+ \z/x },
30 bit => => sub { $_[0] =~ /^[01]\z/ },
31 money => sub { $_[0] =~ /^\$ \d+ (?:\.\d*)? \z/x },
39 sub interpolate_unquoted {
41 my ($type, $value) = @_;
43 return $self->next::method(@_) if not defined $value or not defined $type;
45 if (my $key = first { $type =~ /$_/i } keys %noquote) {
46 return 1 if $noquote{$key}->($value);
48 elsif ($self->is_datatype_numeric($type) && $number->($value)) {
52 return $self->next::method(@_);
55 sub _prep_interpolated_value {
56 my ($self, $type, $value) = @_;
58 if ($type =~ /money/i && defined $value) {
59 # change a ^ not followed by \$ to a \$
60 $value =~ s/^ (?! \$) /\$/x;
70 DBIx::Class::Storage::DBI::Sybase::ASE::NoBindVars - Storage::DBI subclass for
71 Sybase ASE without placeholder support
75 If you're using this driver then your version of Sybase or the libraries you
76 use to connect to it do not support placeholders.
78 You can also enable this driver explicitly using:
80 my $schema = SchemaClass->clone;
81 $schema->storage_type('::DBI::Sybase::ASE::NoBindVars');
82 $schema->connect($dsn, $user, $pass, \%opts);
84 See the discussion in L<< DBD::Sybase/Using ? Placeholders & bind parameters to
85 $sth->execute >> for details on the pros and cons of using placeholders.
87 One advantage of not using placeholders is that C<select @@identity> will work
88 for obtaining the last insert id of an C<IDENTITY> column, instead of having to
89 do C<select max(col)> in a transaction as the base Sybase driver does.
91 When using this driver, bind variables will be interpolated (properly quoted of
92 course) into the SQL query itself, without using placeholders.
94 The caching of prepared statements is also explicitly disabled, as the
95 interpolation renders it useless.
99 See L<DBIx::Class/CONTRIBUTORS>.
103 You may distribute this code under the same terms as Perl itself.