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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->unsafe_insert(1); # there is nothing unsafe as the |
15 | # last_insert_id mechanism is different |
16 | # without bindvars |
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17 | } |
18 | |
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19 | # this works when NOT using placeholders |
20 | sub _fetch_identity_sql { 'SELECT @@IDENTITY' } |
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21 | |
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22 | my $number = sub { Scalar::Util::looks_like_number($_[0]) }; |
23 | |
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24 | my $decimal = sub { $_[0] =~ /^ [-+]? \d+ (?:\.\d*)? \z/x }; |
25 | |
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26 | my %noquote = ( |
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27 | int => sub { $_[0] =~ /^ [-+]? \d+ \z/x }, |
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28 | bit => => sub { $_[0] =~ /^[01]\z/ }, |
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29 | money => sub { $_[0] =~ /^\$ \d+ (?:\.\d*)? \z/x }, |
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30 | float => $number, |
31 | real => $number, |
32 | double => $number, |
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33 | decimal => $decimal, |
34 | numeric => $decimal, |
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35 | ); |
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36 | |
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37 | sub interpolate_unquoted { |
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38 | my $self = shift; |
39 | my ($type, $value) = @_; |
40 | |
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41 | return $self->next::method(@_) if not defined $value or not defined $type; |
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42 | |
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43 | if (my $key = List::Util::first { $type =~ /$_/i } keys %noquote) { |
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44 | return 1 if $noquote{$key}->($value); |
45 | } |
46 | elsif ($self->is_datatype_numeric($type) && $number->($value)) { |
47 | return 1; |
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48 | } |
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49 | |
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50 | return $self->next::method(@_); |
51 | } |
52 | |
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53 | sub _prep_interpolated_value { |
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54 | my ($self, $type, $value) = @_; |
55 | |
56 | if ($type =~ /money/i && defined $value) { |
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57 | # change a ^ not followed by \$ to a \$ |
58 | $value =~ s/^ (?! \$) /\$/x; |
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59 | } |
60 | |
61 | return $value; |
62 | } |
63 | |
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64 | 1; |
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65 | |
66 | =head1 NAME |
67 | |
68 | DBIx::Class::Storage::DBI::Sybase::NoBindVars - Storage::DBI subclass for Sybase |
69 | without placeholder support |
70 | |
71 | =head1 DESCRIPTION |
72 | |
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73 | If you're using this driver than your version of Sybase, or the libraries you |
74 | use to connect to it, do not support placeholders. |
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75 | |
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76 | You can also enable this driver explicitly using: |
77 | |
78 | my $schema = SchemaClass->clone; |
79 | $schema->storage_type('::DBI::Sybase::NoBindVars'); |
80 | $schema->connect($dsn, $user, $pass, \%opts); |
81 | |
82 | See the discussion in L<< DBD::Sybase/Using ? Placeholders & bind parameters to |
83 | $sth->execute >> for details on the pros and cons of using placeholders. |
84 | |
85 | One advantage of not using placeholders is that C<select @@identity> will work |
86 | for obtainging the last insert id of an C<IDENTITY> column, instead of having to |
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87 | do C<select max(col)> in a transaction as the base Sybase driver does. |
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88 | |
89 | When using this driver, bind variables will be interpolated (properly quoted of |
90 | course) into the SQL query itself, without using placeholders. |
91 | |
92 | The caching of prepared statements is also explicitly disabled, as the |
93 | interpolation renders it useless. |
94 | |
95 | =head1 AUTHORS |
96 | |
97 | See L<DBIx::Class/CONTRIBUTORS>. |
98 | |
99 | =head1 LICENSE |
100 | |
101 | You may distribute this code under the same terms as Perl itself. |
102 | |
103 | =cut |
104 | # vim:sts=2 sw=2: |