1 package DBIx::Class::Storage::DBI::NoBindVars;
6 use base 'DBIx::Class::Storage::DBI';
10 DBIx::Class::Storage::DBI::NoBindVars - Sometime DBDs have poor to no support for bind variables
14 This class allows queries to work when the DBD or underlying library does not
15 support the usual C<?> placeholders, or at least doesn't support them very
16 well, as is the case with L<DBD::Sybase>
22 We can't cache very effectively without bind variables, so force the C<disable_sth_caching> setting to be turned on when the connect info is set.
28 my $retval = $self->next::method(@_);
29 $self->disable_sth_caching(1);
33 =head2 _prep_for_execute
35 Manually subs in the values for the usual C<?> placeholders.
39 sub _prep_for_execute {
42 my ($op, $extra_bind, $ident) = @_;
44 my ($sql, $bind) = $self->next::method(@_);
46 # stringify args, quote via $dbh, and manually insert
48 my @sql_part = split /\?/, $sql;
51 foreach my $bound (@$bind) {
52 my $col = shift @$bound;
53 my $datatype = 'FIXME!!!';
54 foreach my $data (@$bound) {
58 $data = $self->_dbh->quote($data) if $self->should_quote_data_type($datatype, $data);
59 $new_sql .= shift(@sql_part) . $data;
62 $new_sql .= join '', @sql_part;
67 =head2 should_quote_data_type
69 This method is called by L</_prep_for_execute> for every column in
70 order to determine if its value should be quoted or not. The arguments
71 are the current column data type and the actual bind value. The return
72 value is interpreted as: true - do quote, false - do not quote. You should
73 override this in you Storage::DBI::<database> subclass, if your RDBMS
74 does not like quotes around certain datatypes (e.g. Sybase and integer
75 columns). The default method always returns true (do quote).
79 Always validate that the bind-value is valid for the current datatype.
80 Otherwise you may very well open the door to SQL injection attacks.
84 sub should_quote_data_type { 1 }
88 Brandon Black <blblack@gmail.com>
90 Trym Skaar <trym@tryms.no>
94 You may distribute this code under the same terms as Perl itself.