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1 | package DBIx::Class::Storage::DBI::Sybase::NoBindVars; |
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2 | |
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3 | use Class::C3; |
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4 | use base qw/ |
5 | DBIx::Class::Storage::DBI::NoBindVars |
6 | DBIx::Class::Storage::DBI::Sybase |
7 | /; |
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8 | use List::Util (); |
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9 | use Scalar::Util (); |
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10 | |
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11 | sub _dbh_last_insert_id { |
12 | my ($self, $dbh, $source, $col) = @_; |
13 | |
14 | # @@identity works only if not using placeholders |
15 | # Should this query be cached? |
16 | return ($dbh->selectrow_array('select @@identity'))[0]; |
17 | } |
18 | |
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19 | my $number = sub { Scalar::Util::looks_like_number($_[0]) }; |
20 | |
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21 | my $decimal = sub { $_[0] =~ /^ [-+]? \d+ (?:\.\d*)? \z/x }; |
22 | |
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23 | my %noquote = ( |
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24 | int => sub { $_[0] =~ /^ [-+]? \d+ \z/x }, |
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25 | bit => => sub { $_[0] =~ /^[01]\z/ }, |
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26 | money => sub { $_[0] =~ /^\$ \d+ (?:\.\d*)? \z/x }, |
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27 | float => $number, |
28 | real => $number, |
29 | double => $number, |
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30 | decimal => $decimal, |
31 | numeric => $decimal, |
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32 | ); |
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33 | |
34 | sub should_quote_data_type { |
35 | my $self = shift; |
36 | my ($type, $value) = @_; |
37 | |
38 | return $self->next::method(@_) if not defined $value; |
39 | |
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40 | if (my $key = List::Util::first { $type =~ /$_/i } keys %noquote) { |
41 | return 0 if $noquote{$key}->($value); |
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42 | } elsif ($type eq '__UNKNOWN__') { |
43 | # try to guess based on value |
44 | return 0 if $number->($value) || $noquote->{money}->($value); |
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45 | } |
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46 | |
47 | return $self->next::method(@_); |
48 | } |
49 | |
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50 | 1; |
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51 | |
52 | =head1 NAME |
53 | |
54 | DBIx::Class::Storage::DBI::Sybase::NoBindVars - Storage::DBI subclass for Sybase |
55 | without placeholder support |
56 | |
57 | =head1 DESCRIPTION |
58 | |
59 | If you're using this driver than your version of Sybase does not support |
60 | placeholders. You can check with: |
61 | |
62 | $dbh->{syb_dynamic_supported} |
63 | |
64 | You can also enable this driver explicitly using: |
65 | |
66 | my $schema = SchemaClass->clone; |
67 | $schema->storage_type('::DBI::Sybase::NoBindVars'); |
68 | $schema->connect($dsn, $user, $pass, \%opts); |
69 | |
70 | See the discussion in L<< DBD::Sybase/Using ? Placeholders & bind parameters to |
71 | $sth->execute >> for details on the pros and cons of using placeholders. |
72 | |
73 | One advantage of not using placeholders is that C<select @@identity> will work |
74 | for obtainging the last insert id of an C<IDENTITY> column, instead of having to |
75 | do C<select max(col)> as the base Sybase driver does. |
76 | |
77 | When using this driver, bind variables will be interpolated (properly quoted of |
78 | course) into the SQL query itself, without using placeholders. |
79 | |
80 | The caching of prepared statements is also explicitly disabled, as the |
81 | interpolation renders it useless. |
82 | |
83 | =head1 AUTHORS |
84 | |
85 | See L<DBIx::Class/CONTRIBUTORS>. |
86 | |
87 | =head1 LICENSE |
88 | |
89 | You may distribute this code under the same terms as Perl itself. |
90 | |
91 | =cut |
92 | # vim:sts=2 sw=2: |