Commit | Line | Data |
bbe638af |
1 | package SQL::Abstract::Clauses; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use mro 'c3'; |
6 | use base 'SQL::Abstract'; |
7 | |
1bcd361f |
8 | BEGIN { *puke = \&SQL::Abstract::puke } |
9 | |
bbe638af |
10 | sub new { |
11 | shift->next::method(@_)->register_defaults |
12 | } |
13 | |
14 | sub register_defaults { |
15 | my ($self) = @_; |
16 | $self->{clauses_of}{select} = [ qw(select from where order_by) ]; |
17 | $self->{expand}{select} = sub { shift->_expand_statement(@_) }; |
27d61b67 |
18 | $self->{render}{select} = sub { shift->_render_statement(select => @_) }; |
19 | $self->{expand_clause}{'select.select'} = sub { |
20 | $_[0]->_expand_maybe_list_expr($_[1], -ident) |
21 | }; |
bbe638af |
22 | $self->{expand_clause}{'select.from'} = sub { |
23 | $_[0]->_expand_maybe_list_expr($_[1], -ident) |
24 | }; |
25 | $self->{expand_clause}{'select.where'} = 'expand_expr'; |
26 | $self->{expand_clause}{'select.order_by'} = '_expand_order_by'; |
1bcd361f |
27 | $self->{clauses_of}{update} = [ qw(update set where returning) ]; |
28 | $self->{expand}{update} = sub { shift->_expand_statement(@_) }; |
29 | $self->{render}{update} = sub { shift->_render_statement(update => @_) }; |
30 | $self->{expand_clause}{'update.update'} = sub { |
31 | $_[0]->expand_expr($_[1], -ident) |
32 | }; |
33 | $self->{expand_clause}{'update.set'} = '_expand_update_set_values'; |
34 | $self->{expand_clause}{'update.where'} = 'expand_expr'; |
35 | $self->{expand_clause}{'update.returning'} = sub { |
36 | shift->_expand_maybe_list_expr(@_, -ident); |
37 | }; |
bbe638af |
38 | return $self; |
39 | } |
40 | |
41 | sub _expand_statement { |
42 | my ($self, $type, $args) = @_; |
43 | my $ec = $self->{expand_clause}; |
27d61b67 |
44 | return +{ "-${type}" => +{ |
bbe638af |
45 | map +($_ => (do { |
46 | my $val = $args->{$_}; |
47 | if (defined($val) and my $exp = $ec->{"${type}.$_"}) { |
48 | $self->$exp($val); |
49 | } else { |
50 | $val; |
51 | } |
52 | })), sort keys %$args |
27d61b67 |
53 | } }; |
bbe638af |
54 | } |
55 | |
56 | sub _render_statement { |
57 | my ($self, $type, $args) = @_; |
58 | my @parts; |
59 | foreach my $clause (@{$self->{clauses_of}{$type}}) { |
60 | next unless my $clause_expr = $args->{$clause}; |
81b270e7 |
61 | local $self->{convert_where} = $self->{convert} if $clause eq 'where'; |
62 | my ($sql, @bind) = $self->render_aqt($clause_expr); |
bbe638af |
63 | next unless defined($sql) and length($sql); |
64 | push @parts, [ |
65 | $self->_sqlcase(join ' ', split '_', $clause).' '.$sql, |
66 | @bind |
67 | ]; |
68 | } |
69 | return $self->_join_parts(' ', @parts); |
70 | } |
71 | |
81b270e7 |
72 | sub select { |
73 | my ($self, @args) = @_; |
74 | my %clauses; |
75 | @clauses{qw(from select where order_by)} = @args; |
8e6988ce |
76 | |
81b270e7 |
77 | # This oddity is to literalify since historically SQLA doesn't quote |
8e6988ce |
78 | # a single identifier argument, so we convert it into a literal |
79 | |
4ee74413 |
80 | $clauses{select} = { -literal => [ $clauses{select}||'*' ] } |
81 | unless ref($clauses{select}); |
82 | |
81b270e7 |
83 | my ($sql, @bind) = $self->render_expr({ -select => \%clauses }); |
84 | return wantarray ? ($sql, @bind) : $sql; |
85 | } |
86 | |
1bcd361f |
87 | sub update { |
88 | my ($self, $table, $set, $where, $options) = @_; |
89 | my %clauses; |
90 | @clauses{qw(update set where)} = ($table, $set, $where); |
91 | puke "Unsupported data type specified to \$sql->update" |
92 | unless ref($clauses{set}) eq 'HASH'; |
93 | @clauses{keys %$options} = values %$options; |
94 | my ($sql, @bind) = $self->render_expr({ -update => \%clauses }); |
95 | return wantarray ? ($sql, @bind) : $sql; |
96 | } |
97 | |
bbe638af |
98 | 1; |