Commit | Line | Data |
1ff9018c |
1 | package SQL::Abstract::ExtraClauses; |
2 | |
df5d0507 |
3 | use Moo; |
4 | |
5 | has sqla => ( |
6 | is => 'ro', init_arg => undef, |
7 | handles => [ qw( |
b99e393b |
8 | expand_expr expand_maybe_list_expr render_aqt |
df5d0507 |
9 | format_keyword join_query_parts |
10 | ) ], |
11 | ); |
1ff9018c |
12 | |
df5d0507 |
13 | sub cb { |
c671eba6 |
14 | my ($self, $method, @args) = @_; |
15 | return sub { |
16 | local $self->{sqla} = shift; |
17 | $self->$method(@args, @_) |
18 | }; |
df5d0507 |
19 | } |
20 | |
21 | sub apply_to { |
22 | my ($self, $sqla) = @_; |
23 | $self = $self->new unless ref($self); |
ad078c71 |
24 | my @clauses = $sqla->clauses_of('select'); |
2b0b3d43 |
25 | my @before_setop; |
26 | CLAUSE: foreach my $idx (0..$#clauses) { |
27 | if ($clauses[$idx] eq 'order_by') { |
28 | @before_setop = @clauses[0..$idx-1]; |
29 | splice(@clauses, $idx, 0, qw(setop group_by having)); |
30 | last CLAUSE; |
31 | } |
32 | } |
33 | die "Huh?" unless @before_setop; |
ad078c71 |
34 | $sqla->clauses_of(select => 'with', @clauses); |
35 | $sqla->clause_expanders( |
df5d0507 |
36 | 'select.group_by', $self->cb(sub { |
b99e393b |
37 | $_[0]->expand_maybe_list_expr($_[2], -ident) |
df5d0507 |
38 | }), |
39 | 'select.having', $self->cb(sub { $_[0]->expand_expr($_[2]) }), |
58ebc7fa |
40 | ); |
a6227174 |
41 | foreach my $thing (qw(join from_list)) { |
ad078c71 |
42 | $sqla->expander($thing => $self->cb("_expand_${thing}")) |
df5d0507 |
43 | ->renderer($thing => $self->cb("_render_${thing}")) |
a6227174 |
44 | } |
ad078c71 |
45 | $sqla->op_expander(as => $self->cb('_expand_op_as')); |
46 | $sqla->expander(as => $self->cb('_expand_op_as')); |
47 | $sqla->renderer(as => $self->cb('_render_as')); |
2f4717ad |
48 | $sqla->expander(alias => $self->cb('_expand_alias')); |
ad078c71 |
49 | $sqla->renderer(alias => $self->cb('_render_alias')); |
58ebc7fa |
50 | |
ad078c71 |
51 | $sqla->clauses_of(update => sub { |
ee706e89 |
52 | my ($self, @clauses) = @_; |
53 | splice(@clauses, 2, 0, 'from'); |
54 | @clauses; |
55 | }); |
56 | |
ad078c71 |
57 | $sqla->clauses_of(delete => sub { |
ee706e89 |
58 | my ($self, @clauses) = @_; |
59 | splice(@clauses, 1, 0, 'using'); |
60 | @clauses; |
61 | }); |
62 | |
ad078c71 |
63 | $sqla->clause_expanders( |
805c64f1 |
64 | 'update.from' => $self->cb('_expand_from_list'), |
9a20a32d |
65 | 'delete.using' => $self->cb('_expand_from_list'), |
df5d0507 |
66 | 'insert.rowvalues' => $self->cb(sub { |
fe8b493f |
67 | +(from => $_[0]->expand_expr({ -values => $_[2] })); |
df5d0507 |
68 | }), |
69 | 'insert.select' => $self->cb(sub { |
fe8b493f |
70 | +(from => $_[0]->expand_expr({ -select => $_[2] })); |
df5d0507 |
71 | }), |
58ebc7fa |
72 | ); |
26994fdd |
73 | |
2b0b3d43 |
74 | # set ops |
ad078c71 |
75 | $sqla->wrap_expander(select => sub { |
c671eba6 |
76 | $self->cb('_expand_select', $_[0], \@before_setop); |
3f9899e5 |
77 | }); |
2b0b3d43 |
78 | |
ad078c71 |
79 | $sqla->clause_renderer('select.setop' => $self->cb(sub { |
fe8b493f |
80 | my ($self, undef, $setop) = @_; |
3f312d2e |
81 | $self->render_aqt($setop); |
df5d0507 |
82 | })); |
2b0b3d43 |
83 | |
51046d0e |
84 | foreach my $setop (qw(union intersect except)) { |
85 | $sqla->expander($setop => $self->cb('_expand_setop')); |
86 | $sqla->renderer($setop => $self->cb('_render_setop')); |
87 | } |
260e0f29 |
88 | |
41086177 |
89 | my $setop_expander = $self->cb('_expand_clause_setop'); |
f61bfd7b |
90 | |
ad078c71 |
91 | $sqla->clause_expanders( |
f61bfd7b |
92 | map +($_ => $setop_expander), |
93 | map "select.${_}", |
94 | map +($_, "${_}_all", "${_}_distinct"), |
95 | qw(union intersect except) |
96 | ); |
d175037f |
97 | |
2f4717ad |
98 | my $w_exp = $self->cb('_expand_with'); |
99 | my $w_rdr = $self->cb('_render_with'); |
100 | $sqla->clause_expander('select.with' => $w_exp); |
101 | $sqla->clause_expander('select.with_recursive' => $w_exp); |
102 | $sqla->clause_renderer('select.with' => $w_rdr); |
103 | |
a97ecd95 |
104 | foreach my $stmt (qw(insert update delete)) { |
ad078c71 |
105 | $sqla->clauses_of($stmt => 'with', $sqla->clauses_of($stmt)); |
2f4717ad |
106 | $sqla->clause_expander("${stmt}.$_" => $w_exp) |
a97ecd95 |
107 | for qw(with with_recursive); |
2f4717ad |
108 | $sqla->clause_renderer("${stmt}.with" => $w_rdr); |
a97ecd95 |
109 | } |
2f4717ad |
110 | |
111 | $sqla->expander(cast => $self->cb('_expand_cast')); |
df5d0507 |
112 | |
ad078c71 |
113 | $sqla->clause_expanders( |
805c64f1 |
114 | "select.from", $self->cb('_expand_from_list'), |
df5d0507 |
115 | "update.target", $self->cb('_expand_update_clause_target'), |
116 | "update.update", $self->cb('_expand_update_clause_target'), |
117 | ); |
2b0b3d43 |
118 | |
ad078c71 |
119 | return $sqla; |
1ff9018c |
120 | } |
121 | |
c671eba6 |
122 | sub _expand_select { |
093442c8 |
123 | my ($self, $orig, $before_setop, @args) = @_; |
124 | my $exp = $self->sqla->$orig(@args); |
c671eba6 |
125 | return $exp unless my $setop = (my $sel = $exp->{-select})->{setop}; |
126 | if (my @keys = grep $sel->{$_}, @$before_setop) { |
127 | my %inner; @inner{@keys} = delete @{$sel}{@keys}; |
128 | unshift @{(values(%$setop))[0]{queries}}, |
129 | { -select => \%inner }; |
130 | } |
131 | return $exp; |
132 | } |
133 | |
7741b7ad |
134 | sub _expand_from_list { |
135 | my ($self, undef, $args) = @_; |
136 | if (ref($args) eq 'HASH') { |
38e67490 |
137 | return $args if $args->{-from_list}; |
7741b7ad |
138 | return { -from_list => [ $self->expand_expr($args) ] }; |
139 | } |
140 | my @list; |
86a6ebf4 |
141 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
7741b7ad |
142 | while (my $entry = shift @args) { |
b99e9a14 |
143 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
144 | if ($1 eq 'as') { |
145 | $list[-1] = $self->expand_expr({ -as => [ |
146 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
147 | ]}); |
148 | next; |
149 | } |
7741b7ad |
150 | $entry = { $entry => shift @args }; |
151 | } |
152 | my $aqt = $self->expand_expr($entry, -ident); |
153 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
154 | $aqt->{-join}{from} = pop @list; |
155 | } |
156 | push @list, $aqt; |
157 | } |
158 | return { -from_list => \@list }; |
159 | } |
160 | |
161 | sub _expand_join { |
162 | my ($self, undef, $args) = @_; |
163 | my %proto = ( |
164 | ref($args) eq 'HASH' |
165 | ? %$args |
166 | : (to => $args->[0], @{$args}[1..$#$args]) |
167 | ); |
b99e9a14 |
168 | if (my $as = delete $proto{as}) { |
984db0d7 |
169 | $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); |
b99e9a14 |
170 | } |
e0eb8d26 |
171 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
13c99dad |
172 | $proto{using} = [ |
e0eb8d26 |
173 | map [ $self->expand_expr($_, -ident) ], |
174 | ref($using) eq 'ARRAY' ? @$using: $using |
13c99dad |
175 | ]; |
e0eb8d26 |
176 | } |
7741b7ad |
177 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
178 | sort keys %proto; |
179 | return +{ -join => \%ret }; |
180 | } |
181 | |
182 | sub _render_from_list { |
a01911a2 |
183 | my ($self, undef, $list) = @_; |
a1f8b6ef |
184 | return $self->join_query_parts(', ', @$list); |
7741b7ad |
185 | } |
186 | |
187 | sub _render_join { |
a01911a2 |
188 | my ($self, undef, $args) = @_; |
7741b7ad |
189 | |
190 | my @parts = ( |
412f9efe |
191 | $args->{from}, |
192 | $self->format_keyword(join '_', ($args->{type}||()), 'join'), |
51ccda04 |
193 | (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}), |
7741b7ad |
194 | ($args->{on} ? ( |
412f9efe |
195 | $self->format_keyword('on') , |
196 | $args->{on}, |
7741b7ad |
197 | ) : ()), |
198 | ($args->{using} ? ( |
412f9efe |
199 | $self->format_keyword('using'), |
13c99dad |
200 | '(', $args->{using}, ')', |
7741b7ad |
201 | ) : ()), |
202 | ); |
0236f122 |
203 | return $self->join_query_parts(' ', @parts); |
7741b7ad |
204 | } |
205 | |
b99e9a14 |
206 | sub _expand_op_as { |
207 | my ($self, undef, $vv, $k) = @_; |
984db0d7 |
208 | my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); |
209 | $k ||= shift @vv; |
210 | my $ik = $self->expand_expr($k, -ident); |
211 | return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } |
212 | if @vv == 1 and ref($vv[0]) eq 'HASH'; |
213 | |
214 | my @as = map $self->expand_expr($_, -ident), @vv; |
215 | return { -as => [ $ik, { -alias => \@as } ] }; |
b99e9a14 |
216 | } |
217 | |
218 | sub _render_as { |
a01911a2 |
219 | my ($self, undef, $args) = @_; |
984db0d7 |
220 | my ($thing, $alias) = @$args; |
0236f122 |
221 | return $self->join_query_parts( |
ac7992be |
222 | ' ', |
984db0d7 |
223 | $thing, |
ac7992be |
224 | $self->format_keyword('as'), |
984db0d7 |
225 | $alias, |
1ba47f38 |
226 | ); |
227 | } |
228 | |
229 | sub _render_alias { |
984db0d7 |
230 | my ($self, undef, $args) = @_; |
1ba47f38 |
231 | my ($as, @cols) = @$args; |
232 | return (@cols |
0236f122 |
233 | ? $self->join_query_parts('', |
a1f8b6ef |
234 | $as, |
3f312d2e |
235 | '(', |
236 | $self->join_query_parts( |
237 | ', ', |
238 | @cols |
239 | ), |
240 | ')', |
1ba47f38 |
241 | ) |
242 | : $self->render_aqt($as) |
b99e9a14 |
243 | ); |
244 | } |
245 | |
f9f1fdcd |
246 | sub _expand_update_clause_target { |
fe8b493f |
247 | my ($self, undef, $target) = @_; |
f9f1fdcd |
248 | +(target => $self->_expand_from_list(undef, $target)); |
249 | } |
250 | |
2f4717ad |
251 | sub _expand_cast { |
252 | my ($self, undef, $thing) = @_; |
253 | return { -func => [ cast => $thing ] } if ref($thing) eq 'HASH'; |
254 | my ($cast, $to) = @{$thing}; |
255 | +{ -func => [ cast => { -as => [ |
256 | $self->expand_expr($cast), |
257 | $self->expand_expr($to, -ident), |
258 | ] } ] }; |
259 | } |
260 | |
261 | sub _expand_alias { |
262 | my ($self, undef, $args) = @_; |
263 | if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { |
264 | $args = $alias; |
265 | } |
266 | +{ -alias => [ |
267 | map $self->expand_expr($_, -ident), |
268 | ref($args) eq 'ARRAY' ? @{$args} : $args |
269 | ] |
270 | } |
271 | } |
272 | |
273 | sub _expand_with { |
274 | my ($self, $name, $with) = @_; |
275 | my (undef, $type) = split '_', $name; |
276 | if (ref($with) eq 'HASH') { |
277 | return +{ |
278 | %$with, |
279 | queries => [ |
280 | map +[ |
281 | $self->expand_expr({ -alias => $_->[0] }, -ident), |
282 | $self->expand_expr($_->[1]), |
283 | ], @{$with->{queries}} |
284 | ] |
285 | } |
286 | } |
287 | my @with = @$with; |
288 | my @exp; |
289 | while (my ($alias, $query) = splice @with, 0, 2) { |
290 | push @exp, [ |
291 | $self->expand_expr({ -alias => $alias }, -ident), |
292 | $self->expand_expr($query) |
293 | ]; |
294 | } |
295 | return +(with => { ($type ? (type => $type) : ()), queries => \@exp }); |
296 | } |
297 | |
298 | sub _render_with { |
299 | my ($self, undef, $with) = @_; |
300 | my $q_part = $self->join_query_parts(', ', |
301 | map { |
302 | my ($alias, $query) = @$_; |
303 | $self->join_query_parts(' ', |
304 | $alias, |
305 | $self->format_keyword('as'), |
306 | $query, |
307 | ) |
308 | } @{$with->{queries}} |
309 | ); |
310 | return $self->join_query_parts(' ', |
311 | $self->format_keyword(join '_', 'with', ($with->{type}||'')), |
312 | $q_part, |
313 | ); |
314 | } |
315 | |
51046d0e |
316 | sub _expand_setop { |
317 | my ($self, $setop, $args) = @_; |
318 | +{ "-${setop}" => { |
319 | %$args, |
320 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
321 | } }; |
322 | } |
323 | |
b5f4a869 |
324 | sub _render_setop { |
325 | my ($self, $setop, $args) = @_; |
326 | $self->join_query_parts( |
327 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
328 | @{$args->{queries}} |
329 | ); |
330 | } |
331 | |
41086177 |
332 | sub _expand_clause_setop { |
333 | my ($self, $setop, $args) = @_; |
334 | my ($op, $type) = split '_', $setop; |
335 | +(setop => $self->expand_expr({ |
336 | "-${op}" => { |
337 | ($type ? (type => $type) : ()), |
338 | queries => (ref($args) eq 'ARRAY' ? $args : [ $args ]) |
339 | } |
340 | })); |
341 | } |
342 | |
1ff9018c |
343 | 1; |