Commit | Line | Data |
bbe638af |
1 | package SQL::Abstract::Clauses; |
2 | |
3 | use strict; |
4 | use warnings; |
ccb7f3d6 |
5 | use if $] < '5.010', 'MRO::Compat'; |
bbe638af |
6 | use mro 'c3'; |
7 | use base 'SQL::Abstract'; |
8 | |
1bcd361f |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
bbe638af |
11 | sub new { |
12 | shift->next::method(@_)->register_defaults |
13 | } |
14 | |
15 | sub register_defaults { |
16 | my ($self) = @_; |
17 | $self->{clauses_of}{select} = [ qw(select from where order_by) ]; |
18 | $self->{expand}{select} = sub { shift->_expand_statement(@_) }; |
27d61b67 |
19 | $self->{render}{select} = sub { shift->_render_statement(select => @_) }; |
df0f5af9 |
20 | $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_" |
21 | for @{$self->{clauses_of}{select}}; |
1bcd361f |
22 | $self->{clauses_of}{update} = [ qw(update set where returning) ]; |
23 | $self->{expand}{update} = sub { shift->_expand_statement(@_) }; |
24 | $self->{render}{update} = sub { shift->_render_statement(update => @_) }; |
889fdd38 |
25 | $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_" |
26 | for @{$self->{clauses_of}{update}}; |
77e8c03d |
27 | $self->{clauses_of}{delete} = [ qw(delete_from where returning) ]; |
28 | $self->{expand}{delete} = sub { shift->_expand_statement(@_) }; |
29 | $self->{render}{delete} = sub { shift->_render_statement(delete => @_) }; |
44296b4e |
30 | $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_" |
31 | for @{$self->{clauses_of}{delete}}; |
2b057b28 |
32 | $self->{clauses_of}{insert} = [ |
33 | 'insert_into', 'fields', 'values', 'returning' |
34 | ]; |
39544e0e |
35 | $self->{expand}{insert} = sub { shift->_expand_statement(@_) }; |
36 | $self->{render}{insert} = sub { shift->_render_statement(insert => @_) }; |
37 | $self->{expand_clause}{'insert.insert_into'} = sub { |
38 | shift->expand_expr(@_, -ident); |
39 | }; |
f33d93b5 |
40 | $self->{expand_clause}{'insert.values'} = '_expand_insert_clause_values'; |
39544e0e |
41 | $self->{expand_clause}{'insert.returning'} = sub { |
42 | shift->_expand_maybe_list_expr(@_, -ident); |
43 | }; |
2b057b28 |
44 | $self->{render_clause}{'insert.fields'} = sub { |
50874e27 |
45 | return $_[0]->render_aqt($_[1]); |
2b057b28 |
46 | }; |
bbe638af |
47 | return $self; |
48 | } |
49 | |
df0f5af9 |
50 | sub _expand_select_clause_select { |
51 | my ($self, $select) = @_; |
52 | +(select => $self->_expand_maybe_list_expr($select, -ident)); |
53 | } |
54 | |
55 | sub _expand_select_clause_from { |
56 | my ($self, $from) = @_; |
57 | +(from => $self->_expand_maybe_list_expr($from, -ident)); |
58 | } |
59 | |
60 | sub _expand_select_clause_where { |
61 | my ($self, $where) = @_; |
62 | +(where => $self->expand_expr($where)); |
63 | } |
64 | |
65 | sub _expand_select_clause_order_by { |
66 | my ($self, $order_by) = @_; |
67 | +(order_by => $self->_expand_order_by($order_by)); |
68 | } |
69 | |
889fdd38 |
70 | sub _expand_update_clause_update { |
71 | my ($self, $target) = @_; |
72 | +(update => $self->expand_expr($target, -ident)); |
73 | } |
74 | |
75 | sub _expand_update_clause_set { |
e5feec9f |
76 | return $_[1] if ref($_[1]) eq 'HASH' and ($_[1]->{-op}||[''])->[0] eq ','; |
889fdd38 |
77 | +(set => shift->_expand_update_set_values(@_)); |
78 | } |
79 | |
80 | sub _expand_update_clause_where { |
81 | +(where => shift->expand_expr(@_)); |
82 | } |
83 | |
84 | sub _expand_update_clause_returning { |
85 | +(returning => shift->_expand_maybe_list_expr(@_, -ident)); |
86 | } |
87 | |
44296b4e |
88 | sub _expand_delete_clause_delete_from { |
89 | +(delete_from => shift->_expand_maybe_list_expr(@_, -ident)); |
90 | } |
91 | |
92 | sub _expand_delete_clause_where { +(where => shift->expand_expr(@_)); } |
93 | |
94 | sub _expand_delete_clause_returning { |
95 | +(returning => shift->_expand_maybe_list_expr(@_, -ident)); |
96 | } |
97 | |
bbe638af |
98 | sub _expand_statement { |
99 | my ($self, $type, $args) = @_; |
100 | my $ec = $self->{expand_clause}; |
27d61b67 |
101 | return +{ "-${type}" => +{ |
c79c67d7 |
102 | map { |
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103 | my $val = $args->{$_}; |
104 | if (defined($val) and my $exp = $ec->{"${type}.$_"}) { |
c79c67d7 |
105 | if ((my (@exp) = $self->$exp($val)) == 1) { |
106 | ($_ => $exp[0]) |
107 | } else { |
108 | @exp |
109 | } |
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110 | } else { |
c79c67d7 |
111 | ($_ => $val) |
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112 | } |
c79c67d7 |
113 | } sort keys %$args |
27d61b67 |
114 | } }; |
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115 | } |
116 | |
117 | sub _render_statement { |
118 | my ($self, $type, $args) = @_; |
119 | my @parts; |
120 | foreach my $clause (@{$self->{clauses_of}{$type}}) { |
121 | next unless my $clause_expr = $args->{$clause}; |
81b270e7 |
122 | local $self->{convert_where} = $self->{convert} if $clause eq 'where'; |
2b057b28 |
123 | my ($sql) = my @part = do { |
124 | if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) { |
125 | $self->$rdr($clause_expr); |
126 | } else { |
127 | my ($clause_sql, @bind) = $self->render_aqt($clause_expr); |
128 | my $sql = join ' ', |
129 | $self->_sqlcase(join ' ', split '_', $clause), |
130 | $clause_sql; |
131 | ($sql, @bind); |
132 | } |
133 | }; |
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134 | next unless defined($sql) and length($sql); |
2b057b28 |
135 | push @parts, \@part; |
bbe638af |
136 | } |
137 | return $self->_join_parts(' ', @parts); |
138 | } |
139 | |
81b270e7 |
140 | sub select { |
141 | my ($self, @args) = @_; |
142 | my %clauses; |
143 | @clauses{qw(from select where order_by)} = @args; |
8e6988ce |
144 | |
81b270e7 |
145 | # This oddity is to literalify since historically SQLA doesn't quote |
8e6988ce |
146 | # a single identifier argument, so we convert it into a literal |
147 | |
4ee74413 |
148 | $clauses{select} = { -literal => [ $clauses{select}||'*' ] } |
149 | unless ref($clauses{select}); |
150 | |
81b270e7 |
151 | my ($sql, @bind) = $self->render_expr({ -select => \%clauses }); |
152 | return wantarray ? ($sql, @bind) : $sql; |
153 | } |
154 | |
1bcd361f |
155 | sub update { |
156 | my ($self, $table, $set, $where, $options) = @_; |
157 | my %clauses; |
158 | @clauses{qw(update set where)} = ($table, $set, $where); |
159 | puke "Unsupported data type specified to \$sql->update" |
160 | unless ref($clauses{set}) eq 'HASH'; |
161 | @clauses{keys %$options} = values %$options; |
162 | my ($sql, @bind) = $self->render_expr({ -update => \%clauses }); |
163 | return wantarray ? ($sql, @bind) : $sql; |
164 | } |
165 | |
77e8c03d |
166 | sub delete { |
167 | my ($self, $table, $where, $options) = @_; |
168 | my %clauses = (delete_from => $table, where => $where, %{$options||{}}); |
169 | my ($sql, @bind) = $self->render_expr({ -delete => \%clauses }); |
170 | return wantarray ? ($sql, @bind) : $sql; |
171 | } |
172 | |
39544e0e |
173 | sub insert { |
174 | my ($self, $table, $data, $options) = @_; |
f33d93b5 |
175 | my %clauses = (insert_into => $table, values => $data, %{$options||{}}); |
39544e0e |
176 | my ($sql, @bind) = $self->render_expr({ -insert => \%clauses }); |
177 | return wantarray ? ($sql, @bind) : $sql; |
178 | } |
179 | |
f33d93b5 |
180 | sub _expand_insert_clause_values { |
181 | my ($self, $data) = @_; |
e5feec9f |
182 | return $data if ref($data) eq 'HASH' and $data->{-row}; |
f33d93b5 |
183 | my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data); |
184 | return (values => $v_aqt, ($f_aqt ? (fields => $f_aqt) : ())); |
185 | } |
186 | |
bbe638af |
187 | 1; |