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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 _rebless { |
12 | my $self = shift; |
13 | $self->disable_sth_caching(1); |
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14 | $self->_insert_txn(0); |
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15 | } |
16 | |
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17 | # this works when NOT using placeholders |
18 | sub _fetch_identity_sql { 'SELECT @@IDENTITY' } |
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19 | |
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20 | my $number = sub { Scalar::Util::looks_like_number($_[0]) }; |
21 | |
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22 | my $decimal = sub { $_[0] =~ /^ [-+]? \d+ (?:\.\d*)? \z/x }; |
23 | |
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24 | my %noquote = ( |
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25 | int => sub { $_[0] =~ /^ [-+]? \d+ \z/x }, |
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26 | bit => => sub { $_[0] =~ /^[01]\z/ }, |
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27 | money => sub { $_[0] =~ /^\$ \d+ (?:\.\d*)? \z/x }, |
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28 | float => $number, |
29 | real => $number, |
30 | double => $number, |
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31 | decimal => $decimal, |
32 | numeric => $decimal, |
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33 | ); |
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34 | |
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35 | sub should_quote_value { |
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36 | my $self = shift; |
37 | my ($type, $value) = @_; |
38 | |
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39 | return $self->next::method(@_) if not defined $value or not defined $type; |
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40 | |
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41 | if (my $key = List::Util::first { $type =~ /$_/i } keys %noquote) { |
42 | return 0 if $noquote{$key}->($value); |
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43 | } elsif ($self->is_datatype_numeric($type) && $number->($value)) { |
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44 | return 0; |
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45 | } |
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46 | |
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47 | ## try to guess based on value |
48 | # elsif (not $type) { |
49 | # return 0 if $number->($value) || $noquote->{money}->($value); |
50 | # } |
51 | |
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52 | return $self->next::method(@_); |
53 | } |
54 | |
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55 | sub transform_unbound_value { |
56 | my ($self, $type, $value) = @_; |
57 | |
58 | if ($type =~ /money/i && defined $value) { |
59 | $value =~ s/^\$//; |
60 | $value = '$' . $value; |
61 | } |
62 | |
63 | return $value; |
64 | } |
65 | |
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66 | 1; |
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67 | |
68 | =head1 NAME |
69 | |
70 | DBIx::Class::Storage::DBI::Sybase::NoBindVars - Storage::DBI subclass for Sybase |
71 | without placeholder support |
72 | |
73 | =head1 DESCRIPTION |
74 | |
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75 | If you're using this driver than your version of Sybase, or the libraries you |
76 | use to connect to it, do not support placeholders. |
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77 | |
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78 | You can also enable this driver explicitly using: |
79 | |
80 | my $schema = SchemaClass->clone; |
81 | $schema->storage_type('::DBI::Sybase::NoBindVars'); |
82 | $schema->connect($dsn, $user, $pass, \%opts); |
83 | |
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. |
86 | |
87 | One advantage of not using placeholders is that C<select @@identity> will work |
88 | for obtainging the last insert id of an C<IDENTITY> column, instead of having to |
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89 | do C<select max(col)> in a transaction as the base Sybase driver does. |
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90 | |
91 | When using this driver, bind variables will be interpolated (properly quoted of |
92 | course) into the SQL query itself, without using placeholders. |
93 | |
94 | The caching of prepared statements is also explicitly disabled, as the |
95 | interpolation renders it useless. |
96 | |
97 | =head1 AUTHORS |
98 | |
99 | See L<DBIx::Class/CONTRIBUTORS>. |
100 | |
101 | =head1 LICENSE |
102 | |
103 | You may distribute this code under the same terms as Perl itself. |
104 | |
105 | =cut |
106 | # vim:sts=2 sw=2: |