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 | |
13 | BEGIN { *puke = \&SQL::Abstract::puke } |
14 | |
df5d0507 |
15 | sub cb { |
16 | my ($self, $method) = @_; |
17 | return sub { local $self->{sqla} = shift; $self->$method(@_) }; |
18 | } |
19 | |
20 | sub apply_to { |
21 | my ($self, $sqla) = @_; |
22 | $self = $self->new unless ref($self); |
ad078c71 |
23 | my @clauses = $sqla->clauses_of('select'); |
2b0b3d43 |
24 | my @before_setop; |
25 | CLAUSE: foreach my $idx (0..$#clauses) { |
26 | if ($clauses[$idx] eq 'order_by') { |
27 | @before_setop = @clauses[0..$idx-1]; |
28 | splice(@clauses, $idx, 0, qw(setop group_by having)); |
29 | last CLAUSE; |
30 | } |
31 | } |
32 | die "Huh?" unless @before_setop; |
ad078c71 |
33 | $sqla->clauses_of(select => 'with', @clauses); |
34 | $sqla->clause_expanders( |
df5d0507 |
35 | 'select.group_by', $self->cb(sub { |
b99e393b |
36 | $_[0]->expand_maybe_list_expr($_[2], -ident) |
df5d0507 |
37 | }), |
38 | 'select.having', $self->cb(sub { $_[0]->expand_expr($_[2]) }), |
58ebc7fa |
39 | ); |
a6227174 |
40 | foreach my $thing (qw(join from_list)) { |
ad078c71 |
41 | $sqla->expander($thing => $self->cb("_expand_${thing}")) |
df5d0507 |
42 | ->renderer($thing => $self->cb("_render_${thing}")) |
a6227174 |
43 | } |
ad078c71 |
44 | $sqla->op_expander(as => $self->cb('_expand_op_as')); |
45 | $sqla->expander(as => $self->cb('_expand_op_as')); |
46 | $sqla->renderer(as => $self->cb('_render_as')); |
2f4717ad |
47 | $sqla->expander(alias => $self->cb('_expand_alias')); |
ad078c71 |
48 | $sqla->renderer(alias => $self->cb('_render_alias')); |
58ebc7fa |
49 | |
ad078c71 |
50 | $sqla->clauses_of(update => sub { |
ee706e89 |
51 | my ($self, @clauses) = @_; |
52 | splice(@clauses, 2, 0, 'from'); |
53 | @clauses; |
54 | }); |
55 | |
ad078c71 |
56 | $sqla->clauses_of(delete => sub { |
ee706e89 |
57 | my ($self, @clauses) = @_; |
58 | splice(@clauses, 1, 0, 'using'); |
59 | @clauses; |
60 | }); |
61 | |
ad078c71 |
62 | $sqla->clause_expanders( |
df5d0507 |
63 | 'update.from' => $self->cb('_expand_select_clause_from'), |
64 | 'delete.using' => $self->cb(sub { |
fe8b493f |
65 | +(using => $_[0]->_expand_from_list(undef, $_[2])); |
df5d0507 |
66 | }), |
67 | 'insert.rowvalues' => $self->cb(sub { |
fe8b493f |
68 | +(from => $_[0]->expand_expr({ -values => $_[2] })); |
df5d0507 |
69 | }), |
70 | 'insert.select' => $self->cb(sub { |
fe8b493f |
71 | +(from => $_[0]->expand_expr({ -select => $_[2] })); |
df5d0507 |
72 | }), |
58ebc7fa |
73 | ); |
26994fdd |
74 | |
2b0b3d43 |
75 | # set ops |
ad078c71 |
76 | $sqla->wrap_expander(select => sub { |
3f9899e5 |
77 | my $orig = shift; |
df5d0507 |
78 | $self->cb(sub { |
2b0b3d43 |
79 | my $self = shift; |
df5d0507 |
80 | my $exp = $self->sqla->$orig(@_); |
2b0b3d43 |
81 | return $exp unless my $setop = (my $sel = $exp->{-select})->{setop}; |
82 | if (my @keys = grep $sel->{$_}, @before_setop) { |
83 | my %inner; @inner{@keys} = delete @{$sel}{@keys}; |
84 | unshift @{(values(%$setop))[0]{queries}}, |
85 | { -select => \%inner }; |
86 | } |
87 | return $exp; |
df5d0507 |
88 | }); |
3f9899e5 |
89 | }); |
2b0b3d43 |
90 | |
ad078c71 |
91 | $sqla->clause_renderer('select.setop' => $self->cb(sub { |
fe8b493f |
92 | my ($self, undef, $setop) = @_; |
3f312d2e |
93 | $self->render_aqt($setop); |
df5d0507 |
94 | })); |
2b0b3d43 |
95 | |
51046d0e |
96 | foreach my $setop (qw(union intersect except)) { |
97 | $sqla->expander($setop => $self->cb('_expand_setop')); |
98 | $sqla->renderer($setop => $self->cb('_render_setop')); |
99 | } |
260e0f29 |
100 | |
df5d0507 |
101 | my $setop_expander = $self->cb(sub { |
f61bfd7b |
102 | my ($self, $setop, $args) = @_; |
103 | my ($op, $type) = split '_', $setop; |
104 | +(setop => $self->expand_expr({ |
105 | "-${op}" => { |
106 | ($type ? (type => $type) : ()), |
107 | queries => (ref($args) eq 'ARRAY' ? $args : [ $args ]) |
108 | } |
109 | })); |
df5d0507 |
110 | }); |
f61bfd7b |
111 | |
ad078c71 |
112 | $sqla->clause_expanders( |
f61bfd7b |
113 | map +($_ => $setop_expander), |
114 | map "select.${_}", |
115 | map +($_, "${_}_all", "${_}_distinct"), |
116 | qw(union intersect except) |
117 | ); |
d175037f |
118 | |
2f4717ad |
119 | my $w_exp = $self->cb('_expand_with'); |
120 | my $w_rdr = $self->cb('_render_with'); |
121 | $sqla->clause_expander('select.with' => $w_exp); |
122 | $sqla->clause_expander('select.with_recursive' => $w_exp); |
123 | $sqla->clause_renderer('select.with' => $w_rdr); |
124 | |
a97ecd95 |
125 | foreach my $stmt (qw(insert update delete)) { |
ad078c71 |
126 | $sqla->clauses_of($stmt => 'with', $sqla->clauses_of($stmt)); |
2f4717ad |
127 | $sqla->clause_expander("${stmt}.$_" => $w_exp) |
a97ecd95 |
128 | for qw(with with_recursive); |
2f4717ad |
129 | $sqla->clause_renderer("${stmt}.with" => $w_rdr); |
a97ecd95 |
130 | } |
2f4717ad |
131 | |
132 | $sqla->expander(cast => $self->cb('_expand_cast')); |
df5d0507 |
133 | |
ad078c71 |
134 | $sqla->clause_expanders( |
df5d0507 |
135 | "select.from", $self->cb('_expand_select_clause_from'), |
136 | "update.target", $self->cb('_expand_update_clause_target'), |
137 | "update.update", $self->cb('_expand_update_clause_target'), |
138 | ); |
2b0b3d43 |
139 | |
ad078c71 |
140 | return $sqla; |
1ff9018c |
141 | } |
142 | |
7741b7ad |
143 | sub _expand_select_clause_from { |
fe8b493f |
144 | my ($self, undef, $from) = @_; |
7741b7ad |
145 | +(from => $self->_expand_from_list(undef, $from)); |
146 | } |
147 | |
148 | sub _expand_from_list { |
149 | my ($self, undef, $args) = @_; |
150 | if (ref($args) eq 'HASH') { |
38e67490 |
151 | return $args if $args->{-from_list}; |
7741b7ad |
152 | return { -from_list => [ $self->expand_expr($args) ] }; |
153 | } |
154 | my @list; |
86a6ebf4 |
155 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
7741b7ad |
156 | while (my $entry = shift @args) { |
b99e9a14 |
157 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
158 | if ($1 eq 'as') { |
159 | $list[-1] = $self->expand_expr({ -as => [ |
160 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
161 | ]}); |
162 | next; |
163 | } |
7741b7ad |
164 | $entry = { $entry => shift @args }; |
165 | } |
166 | my $aqt = $self->expand_expr($entry, -ident); |
167 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
168 | $aqt->{-join}{from} = pop @list; |
169 | } |
170 | push @list, $aqt; |
171 | } |
172 | return { -from_list => \@list }; |
173 | } |
174 | |
175 | sub _expand_join { |
176 | my ($self, undef, $args) = @_; |
177 | my %proto = ( |
178 | ref($args) eq 'HASH' |
179 | ? %$args |
180 | : (to => $args->[0], @{$args}[1..$#$args]) |
181 | ); |
b99e9a14 |
182 | if (my $as = delete $proto{as}) { |
984db0d7 |
183 | $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); |
b99e9a14 |
184 | } |
e0eb8d26 |
185 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
13c99dad |
186 | $proto{using} = [ |
e0eb8d26 |
187 | map [ $self->expand_expr($_, -ident) ], |
188 | ref($using) eq 'ARRAY' ? @$using: $using |
13c99dad |
189 | ]; |
e0eb8d26 |
190 | } |
7741b7ad |
191 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
192 | sort keys %proto; |
193 | return +{ -join => \%ret }; |
194 | } |
195 | |
196 | sub _render_from_list { |
a01911a2 |
197 | my ($self, undef, $list) = @_; |
a1f8b6ef |
198 | return $self->join_query_parts(', ', @$list); |
7741b7ad |
199 | } |
200 | |
201 | sub _render_join { |
a01911a2 |
202 | my ($self, undef, $args) = @_; |
7741b7ad |
203 | |
204 | my @parts = ( |
412f9efe |
205 | $args->{from}, |
206 | $self->format_keyword(join '_', ($args->{type}||()), 'join'), |
51ccda04 |
207 | (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}), |
7741b7ad |
208 | ($args->{on} ? ( |
412f9efe |
209 | $self->format_keyword('on') , |
210 | $args->{on}, |
7741b7ad |
211 | ) : ()), |
212 | ($args->{using} ? ( |
412f9efe |
213 | $self->format_keyword('using'), |
13c99dad |
214 | '(', $args->{using}, ')', |
7741b7ad |
215 | ) : ()), |
216 | ); |
0236f122 |
217 | return $self->join_query_parts(' ', @parts); |
7741b7ad |
218 | } |
219 | |
b99e9a14 |
220 | sub _expand_op_as { |
221 | my ($self, undef, $vv, $k) = @_; |
984db0d7 |
222 | my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); |
223 | $k ||= shift @vv; |
224 | my $ik = $self->expand_expr($k, -ident); |
225 | return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } |
226 | if @vv == 1 and ref($vv[0]) eq 'HASH'; |
227 | |
228 | my @as = map $self->expand_expr($_, -ident), @vv; |
229 | return { -as => [ $ik, { -alias => \@as } ] }; |
b99e9a14 |
230 | } |
231 | |
232 | sub _render_as { |
a01911a2 |
233 | my ($self, undef, $args) = @_; |
984db0d7 |
234 | my ($thing, $alias) = @$args; |
0236f122 |
235 | return $self->join_query_parts( |
ac7992be |
236 | ' ', |
984db0d7 |
237 | $thing, |
ac7992be |
238 | $self->format_keyword('as'), |
984db0d7 |
239 | $alias, |
1ba47f38 |
240 | ); |
241 | } |
242 | |
243 | sub _render_alias { |
984db0d7 |
244 | my ($self, undef, $args) = @_; |
1ba47f38 |
245 | my ($as, @cols) = @$args; |
246 | return (@cols |
0236f122 |
247 | ? $self->join_query_parts('', |
a1f8b6ef |
248 | $as, |
3f312d2e |
249 | '(', |
250 | $self->join_query_parts( |
251 | ', ', |
252 | @cols |
253 | ), |
254 | ')', |
1ba47f38 |
255 | ) |
256 | : $self->render_aqt($as) |
b99e9a14 |
257 | ); |
258 | } |
259 | |
f9f1fdcd |
260 | sub _expand_update_clause_target { |
fe8b493f |
261 | my ($self, undef, $target) = @_; |
f9f1fdcd |
262 | +(target => $self->_expand_from_list(undef, $target)); |
263 | } |
264 | |
2f4717ad |
265 | sub _expand_cast { |
266 | my ($self, undef, $thing) = @_; |
267 | return { -func => [ cast => $thing ] } if ref($thing) eq 'HASH'; |
268 | my ($cast, $to) = @{$thing}; |
269 | +{ -func => [ cast => { -as => [ |
270 | $self->expand_expr($cast), |
271 | $self->expand_expr($to, -ident), |
272 | ] } ] }; |
273 | } |
274 | |
275 | sub _expand_alias { |
276 | my ($self, undef, $args) = @_; |
277 | if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { |
278 | $args = $alias; |
279 | } |
280 | +{ -alias => [ |
281 | map $self->expand_expr($_, -ident), |
282 | ref($args) eq 'ARRAY' ? @{$args} : $args |
283 | ] |
284 | } |
285 | } |
286 | |
287 | sub _expand_with { |
288 | my ($self, $name, $with) = @_; |
289 | my (undef, $type) = split '_', $name; |
290 | if (ref($with) eq 'HASH') { |
291 | return +{ |
292 | %$with, |
293 | queries => [ |
294 | map +[ |
295 | $self->expand_expr({ -alias => $_->[0] }, -ident), |
296 | $self->expand_expr($_->[1]), |
297 | ], @{$with->{queries}} |
298 | ] |
299 | } |
300 | } |
301 | my @with = @$with; |
302 | my @exp; |
303 | while (my ($alias, $query) = splice @with, 0, 2) { |
304 | push @exp, [ |
305 | $self->expand_expr({ -alias => $alias }, -ident), |
306 | $self->expand_expr($query) |
307 | ]; |
308 | } |
309 | return +(with => { ($type ? (type => $type) : ()), queries => \@exp }); |
310 | } |
311 | |
312 | sub _render_with { |
313 | my ($self, undef, $with) = @_; |
314 | my $q_part = $self->join_query_parts(', ', |
315 | map { |
316 | my ($alias, $query) = @$_; |
317 | $self->join_query_parts(' ', |
318 | $alias, |
319 | $self->format_keyword('as'), |
320 | $query, |
321 | ) |
322 | } @{$with->{queries}} |
323 | ); |
324 | return $self->join_query_parts(' ', |
325 | $self->format_keyword(join '_', 'with', ($with->{type}||'')), |
326 | $q_part, |
327 | ); |
328 | } |
329 | |
51046d0e |
330 | sub _expand_setop { |
331 | my ($self, $setop, $args) = @_; |
332 | +{ "-${setop}" => { |
333 | %$args, |
334 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
335 | } }; |
336 | } |
337 | |
b5f4a869 |
338 | sub _render_setop { |
339 | my ($self, $setop, $args) = @_; |
340 | $self->join_query_parts( |
341 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
342 | @{$args->{queries}} |
343 | ); |
344 | } |
345 | |
1ff9018c |
346 | 1; |