Commit | Line | Data |
8f306bb1 |
1 | package SQL::Abstract::Clauses; |
2 | |
3 | use strict; |
4 | use warnings; |
740af2e0 |
5 | use if $] < '5.010', 'MRO::Compat'; |
8f306bb1 |
6 | use mro 'c3'; |
7 | use base 'SQL::Abstract'; |
8 | |
d5f4b9d3 |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
8f306bb1 |
11 | sub new { |
12 | shift->next::method(@_)->register_defaults |
13 | } |
14 | |
15 | sub register_defaults { |
16 | my ($self) = @_; |
17 | $self->{clauses_of}{select} = [ qw(select from where order_by) ]; |
18 | $self->{expand}{select} = sub { shift->_expand_statement(@_) }; |
25b45941 |
19 | $self->{render}{select} = sub { shift->_render_statement(select => @_) }; |
8cad5d13 |
20 | $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_" |
21 | for @{$self->{clauses_of}{select}}; |
45a145cf |
22 | $self->{clauses_of}{update} = [ qw(target set where returning) ]; |
d5f4b9d3 |
23 | $self->{expand}{update} = sub { shift->_expand_statement(@_) }; |
24 | $self->{render}{update} = sub { shift->_render_statement(update => @_) }; |
4c0c4404 |
25 | $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_" |
26 | for @{$self->{clauses_of}{update}}; |
45a145cf |
27 | $self->{expand_clause}{'update.update'} = '_expand_update_clause_target'; |
28 | $self->{render_clause}{'update.target'} = sub { |
29 | my ($self, $target) = @_; |
30 | my ($sql, @bind) = $self->render_aqt($target); |
31 | ($self->_sqlcase('update ').$sql, @bind); |
32 | }; |
33 | $self->{clauses_of}{delete} = [ qw(target where returning) ]; |
be12624c |
34 | $self->{expand}{delete} = sub { shift->_expand_statement(@_) }; |
35 | $self->{render}{delete} = sub { shift->_render_statement(delete => @_) }; |
bc637c4f |
36 | $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_" |
37 | for @{$self->{clauses_of}{delete}}; |
45a145cf |
38 | $self->{expand_clause}{"delete.from"} = '_expand_delete_clause_target'; |
39 | $self->{render_clause}{'delete.target'} = sub { |
40 | my ($self, $from) = @_; |
41 | my ($sql, @bind) = $self->render_aqt($from); |
42 | ($self->_sqlcase('delete from ').$sql, @bind); |
43 | }; |
6a47389f |
44 | $self->{clauses_of}{insert} = [ |
bea59460 |
45 | 'target', 'fields', 'from', 'returning' |
6a47389f |
46 | ]; |
5ed4a77e |
47 | $self->{expand}{insert} = sub { shift->_expand_statement(@_) }; |
48 | $self->{render}{insert} = sub { shift->_render_statement(insert => @_) }; |
45a145cf |
49 | $self->{expand_clause}{'insert.into'} = '_expand_insert_clause_target'; |
50 | $self->{expand_clause}{'insert.target'} = '_expand_insert_clause_target'; |
73f1883a |
51 | $self->{expand_clause}{'insert.fields'} = sub { |
52 | return +{ -row => [ |
53 | shift->_expand_maybe_list_expr(@_, -ident) |
54 | ] } if ref($_[1]) eq 'ARRAY'; |
55 | return $_[1]; # should maybe still expand somewhat? |
56 | }; |
89bbac1d |
57 | $self->{expand_clause}{'insert.values'} = '_expand_insert_clause_values'; |
5ed4a77e |
58 | $self->{expand_clause}{'insert.returning'} = sub { |
59 | shift->_expand_maybe_list_expr(@_, -ident); |
60 | }; |
6a47389f |
61 | $self->{render_clause}{'insert.fields'} = sub { |
4e38e5fb |
62 | return $_[0]->render_aqt($_[1]); |
6a47389f |
63 | }; |
45a145cf |
64 | $self->{render_clause}{'insert.target'} = sub { |
65 | my ($self, $from) = @_; |
66 | my ($sql, @bind) = $self->render_aqt($from); |
67 | ($self->_sqlcase('insert into ').$sql, @bind); |
68 | }; |
bea59460 |
69 | $self->{render_clause}{'insert.from'} = sub { |
434c40f1 |
70 | return $_[0]->render_aqt($_[1], 1); |
6da32de8 |
71 | }; |
434c40f1 |
72 | $self->{expand}{values} = '_expand_values'; |
73 | $self->{render}{values} = '_render_values'; |
f47b547b |
74 | $self->{expand}{exists} = sub { |
75 | $_[0]->_expand_op(undef, [ exists => $_[2] ]); |
76 | }; |
8f306bb1 |
77 | return $self; |
78 | } |
79 | |
8cad5d13 |
80 | sub _expand_select_clause_select { |
81 | my ($self, $select) = @_; |
82 | +(select => $self->_expand_maybe_list_expr($select, -ident)); |
83 | } |
84 | |
85 | sub _expand_select_clause_from { |
86 | my ($self, $from) = @_; |
87 | +(from => $self->_expand_maybe_list_expr($from, -ident)); |
88 | } |
89 | |
90 | sub _expand_select_clause_where { |
91 | my ($self, $where) = @_; |
92 | +(where => $self->expand_expr($where)); |
93 | } |
94 | |
95 | sub _expand_select_clause_order_by { |
96 | my ($self, $order_by) = @_; |
97 | +(order_by => $self->_expand_order_by($order_by)); |
98 | } |
99 | |
45a145cf |
100 | sub _expand_update_clause_target { |
4c0c4404 |
101 | my ($self, $target) = @_; |
0891ae97 |
102 | +(target => $self->_expand_maybe_list_expr($target, -ident)); |
4c0c4404 |
103 | } |
104 | |
105 | sub _expand_update_clause_set { |
e5d02bc7 |
106 | return $_[1] if ref($_[1]) eq 'HASH' and ($_[1]->{-op}||[''])->[0] eq ','; |
4c0c4404 |
107 | +(set => shift->_expand_update_set_values(@_)); |
108 | } |
109 | |
110 | sub _expand_update_clause_where { |
111 | +(where => shift->expand_expr(@_)); |
112 | } |
113 | |
114 | sub _expand_update_clause_returning { |
115 | +(returning => shift->_expand_maybe_list_expr(@_, -ident)); |
116 | } |
117 | |
45a145cf |
118 | sub _expand_delete_clause_target { |
119 | +(target => shift->_expand_maybe_list_expr(@_, -ident)); |
bc637c4f |
120 | } |
121 | |
122 | sub _expand_delete_clause_where { +(where => shift->expand_expr(@_)); } |
123 | |
124 | sub _expand_delete_clause_returning { |
125 | +(returning => shift->_expand_maybe_list_expr(@_, -ident)); |
126 | } |
127 | |
8f306bb1 |
128 | sub _expand_statement { |
129 | my ($self, $type, $args) = @_; |
130 | my $ec = $self->{expand_clause}; |
25b45941 |
131 | return +{ "-${type}" => +{ |
95894429 |
132 | map { |
8f306bb1 |
133 | my $val = $args->{$_}; |
134 | if (defined($val) and my $exp = $ec->{"${type}.$_"}) { |
95894429 |
135 | if ((my (@exp) = $self->$exp($val)) == 1) { |
136 | ($_ => $exp[0]) |
137 | } else { |
138 | @exp |
139 | } |
8f306bb1 |
140 | } else { |
bea59460 |
141 | ($_ => $self->expand_expr($val)) |
8f306bb1 |
142 | } |
95894429 |
143 | } sort keys %$args |
25b45941 |
144 | } }; |
8f306bb1 |
145 | } |
146 | |
147 | sub _render_statement { |
148 | my ($self, $type, $args) = @_; |
149 | my @parts; |
150 | foreach my $clause (@{$self->{clauses_of}{$type}}) { |
151 | next unless my $clause_expr = $args->{$clause}; |
b96fbdc0 |
152 | local $self->{convert_where} = $self->{convert} if $clause eq 'where'; |
6a47389f |
153 | my ($sql) = my @part = do { |
154 | if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) { |
155 | $self->$rdr($clause_expr); |
156 | } else { |
434c40f1 |
157 | my ($clause_sql, @bind) = $self->render_aqt($clause_expr, 1); |
6a47389f |
158 | my $sql = join ' ', |
159 | $self->_sqlcase(join ' ', split '_', $clause), |
160 | $clause_sql; |
161 | ($sql, @bind); |
162 | } |
163 | }; |
8f306bb1 |
164 | next unless defined($sql) and length($sql); |
6a47389f |
165 | push @parts, \@part; |
8f306bb1 |
166 | } |
434c40f1 |
167 | my ($sql, @bind) = $self->_join_parts(' ', @parts); |
168 | return ( |
169 | (our $Render_Top_Level ? $sql : '('.$sql.')'), |
170 | @bind |
171 | ); |
172 | } |
173 | |
174 | sub render_aqt { |
175 | my ($self, $aqt, $top_level) = @_; |
176 | local our $Render_Top_Level = $top_level; |
177 | return $self->next::method($aqt); |
178 | } |
179 | |
180 | sub render_statement { |
181 | my ($self, $expr, $default_scalar_to) = @_; |
182 | my ($sql, @bind) = $self->render_aqt( |
183 | $self->expand_expr($expr, $default_scalar_to), 1 |
184 | ); |
185 | return (wantarray ? ($sql, @bind) : $sql); |
8f306bb1 |
186 | } |
187 | |
b96fbdc0 |
188 | sub select { |
189 | my ($self, @args) = @_; |
73f1883a |
190 | |
434c40f1 |
191 | return $self->render_statement({ -select => $_[1] }) if ref($_[1]) eq 'HASH'; |
73f1883a |
192 | |
b96fbdc0 |
193 | my %clauses; |
194 | @clauses{qw(from select where order_by)} = @args; |
0c3c4c23 |
195 | |
b96fbdc0 |
196 | # This oddity is to literalify since historically SQLA doesn't quote |
0c3c4c23 |
197 | # a single identifier argument, so we convert it into a literal |
198 | |
91d37de5 |
199 | $clauses{select} = { -literal => [ $clauses{select}||'*' ] } |
200 | unless ref($clauses{select}); |
201 | |
434c40f1 |
202 | return $self->render_statement({ -select => \%clauses }); |
b96fbdc0 |
203 | } |
204 | |
d5f4b9d3 |
205 | sub update { |
206 | my ($self, $table, $set, $where, $options) = @_; |
73f1883a |
207 | |
434c40f1 |
208 | return $self->render_statement({ -update => $_[1] }) if ref($_[1]) eq 'HASH'; |
73f1883a |
209 | |
d5f4b9d3 |
210 | my %clauses; |
45a145cf |
211 | @clauses{qw(target set where)} = ($table, $set, $where); |
d5f4b9d3 |
212 | puke "Unsupported data type specified to \$sql->update" |
213 | unless ref($clauses{set}) eq 'HASH'; |
214 | @clauses{keys %$options} = values %$options; |
434c40f1 |
215 | return $self->render_statement({ -update => \%clauses }); |
d5f4b9d3 |
216 | } |
217 | |
be12624c |
218 | sub delete { |
219 | my ($self, $table, $where, $options) = @_; |
73f1883a |
220 | |
434c40f1 |
221 | return $self->render_statement({ -delete => $_[1] }) if ref($_[1]) eq 'HASH'; |
73f1883a |
222 | |
45a145cf |
223 | my %clauses = (target => $table, where => $where, %{$options||{}}); |
434c40f1 |
224 | return $self->render_statement({ -delete => \%clauses }); |
be12624c |
225 | } |
226 | |
5ed4a77e |
227 | sub insert { |
228 | my ($self, $table, $data, $options) = @_; |
73f1883a |
229 | |
434c40f1 |
230 | return $self->render_statement({ -insert => $_[1] }) if ref($_[1]) eq 'HASH'; |
73f1883a |
231 | |
45a145cf |
232 | my %clauses = (target => $table, values => $data, %{$options||{}}); |
434c40f1 |
233 | return $self->render_statement({ -insert => \%clauses }); |
5ed4a77e |
234 | } |
235 | |
45a145cf |
236 | sub _expand_insert_clause_target { |
237 | +(target => shift->_expand_maybe_list_expr(@_, -ident)); |
238 | } |
239 | |
89bbac1d |
240 | sub _expand_insert_clause_values { |
241 | my ($self, $data) = @_; |
6da32de8 |
242 | if (ref($data) eq 'HASH' and (keys(%$data))[0] =~ /^-/) { |
243 | return $self->expand_expr($data); |
244 | } |
e5d02bc7 |
245 | return $data if ref($data) eq 'HASH' and $data->{-row}; |
89bbac1d |
246 | my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data); |
bea59460 |
247 | return (from => { -values => $v_aqt }, ($f_aqt ? (fields => $f_aqt) : ())); |
89bbac1d |
248 | } |
249 | |
434c40f1 |
250 | sub _expand_values { |
251 | my ($self, undef, $values) = @_; |
252 | return { -values => [ |
253 | map +( |
254 | ref($_) eq 'HASH' |
255 | ? $self->expand_expr($_) |
256 | : +{ -row => [ map $self->expand_expr($_), @$_ ] } |
257 | ), ref($values) eq 'ARRAY' ? @$values : $values |
258 | ] }; |
259 | } |
260 | |
261 | sub _render_values { |
262 | my ($self, $values) = @_; |
263 | my ($v_sql, @bind) = $self->_join_parts( |
264 | ', ', |
265 | map [ $self->render_aqt($_) ], |
266 | ref($values) eq 'ARRAY' ? @$values : $values |
267 | ); |
268 | my $sql = $self->_sqlcase('values').' '.$v_sql; |
269 | return ( |
270 | (our $Render_Top_Level ? $sql : '('.$sql.')'), |
271 | @bind |
272 | ); |
273 | } |
274 | |
8637f869 |
275 | sub _ext_rw { |
276 | my ($self, $name, $key, $value) = @_; |
277 | return $self->{$name}{$key} unless @_ > 2; |
278 | $self->{$name}{$key} = $value; |
279 | return $self; |
280 | } |
281 | |
52a5554b |
282 | BEGIN { |
283 | foreach my $type (qw( |
284 | expand op_expand render op_renderer clause_expand clause_render |
285 | )) { |
286 | my $key = join '_', reverse split '_', $type; |
71c1b4d5 |
287 | my $singular = "${type}er"; |
288 | eval qq{sub ${singular} { shift->_ext_rw($key => \@_) }; 1 } |
289 | or die "Method builder failed for ${type}er: $@"; |
290 | eval qq{sub ${singular}s { |
291 | my (\$self, \@args) = \@_; |
292 | while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) { |
293 | \$self->{${key}}{\$this_key} = \$this_value; |
294 | } |
295 | return \$self; |
296 | }; 1 } or die "Method builder failed for ${singular}s: $@"; |
52a5554b |
297 | } |
298 | } |
8637f869 |
299 | |
300 | sub clauses_of { |
301 | my ($self, $of, @clauses) = @_; |
302 | unless (@clauses) { |
303 | return @{$self->{clauses_of}{$of}||[]}; |
304 | } |
305 | $self->{clauses_of}{$of} = \@clauses; |
306 | return $self; |
307 | } |
308 | |
309 | sub clone { |
310 | my ($self) = @_; |
311 | bless( |
312 | { |
313 | (map +($_ => ( |
314 | ref($self->{$_}) eq 'HASH' |
315 | ? { %{$self->{$_}} } |
316 | : $self->{$_} |
317 | )), keys %$self), |
318 | }, |
319 | ref($self) |
320 | ); |
321 | } |
322 | |
434c40f1 |
323 | |
8f306bb1 |
324 | 1; |