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 | }); |
df5d0507 |
90 | my $expand_setop = $self->cb(sub { |
d175037f |
91 | my ($self, $setop, $args) = @_; |
92 | +{ "-${setop}" => { |
2b0b3d43 |
93 | %$args, |
94 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
95 | } }; |
df5d0507 |
96 | }); |
ad078c71 |
97 | $sqla->expanders(map +($_ => $expand_setop), qw(union intersect except)); |
2b0b3d43 |
98 | |
ad078c71 |
99 | $sqla->clause_renderer('select.setop' => $self->cb(sub { |
fe8b493f |
100 | my ($self, undef, $setop) = @_; |
3f312d2e |
101 | $self->render_aqt($setop); |
df5d0507 |
102 | })); |
2b0b3d43 |
103 | |
ad078c71 |
104 | $sqla->renderer($_ => $self->cb(sub { |
260e0f29 |
105 | my ($self, $setop, $args) = @_; |
0236f122 |
106 | $self->join_query_parts( |
260e0f29 |
107 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
a1f8b6ef |
108 | @{$args->{queries}} |
260e0f29 |
109 | ); |
df5d0507 |
110 | })) for qw(union intersect except); |
260e0f29 |
111 | |
df5d0507 |
112 | my $setop_expander = $self->cb(sub { |
f61bfd7b |
113 | my ($self, $setop, $args) = @_; |
114 | my ($op, $type) = split '_', $setop; |
115 | +(setop => $self->expand_expr({ |
116 | "-${op}" => { |
117 | ($type ? (type => $type) : ()), |
118 | queries => (ref($args) eq 'ARRAY' ? $args : [ $args ]) |
119 | } |
120 | })); |
df5d0507 |
121 | }); |
f61bfd7b |
122 | |
ad078c71 |
123 | $sqla->clause_expanders( |
f61bfd7b |
124 | map +($_ => $setop_expander), |
125 | map "select.${_}", |
126 | map +($_, "${_}_all", "${_}_distinct"), |
127 | qw(union intersect except) |
128 | ); |
d175037f |
129 | |
2f4717ad |
130 | my $w_exp = $self->cb('_expand_with'); |
131 | my $w_rdr = $self->cb('_render_with'); |
132 | $sqla->clause_expander('select.with' => $w_exp); |
133 | $sqla->clause_expander('select.with_recursive' => $w_exp); |
134 | $sqla->clause_renderer('select.with' => $w_rdr); |
135 | |
a97ecd95 |
136 | foreach my $stmt (qw(insert update delete)) { |
ad078c71 |
137 | $sqla->clauses_of($stmt => 'with', $sqla->clauses_of($stmt)); |
2f4717ad |
138 | $sqla->clause_expander("${stmt}.$_" => $w_exp) |
a97ecd95 |
139 | for qw(with with_recursive); |
2f4717ad |
140 | $sqla->clause_renderer("${stmt}.with" => $w_rdr); |
a97ecd95 |
141 | } |
2f4717ad |
142 | |
143 | $sqla->expander(cast => $self->cb('_expand_cast')); |
df5d0507 |
144 | |
ad078c71 |
145 | $sqla->clause_expanders( |
df5d0507 |
146 | "select.from", $self->cb('_expand_select_clause_from'), |
147 | "update.target", $self->cb('_expand_update_clause_target'), |
148 | "update.update", $self->cb('_expand_update_clause_target'), |
149 | ); |
2b0b3d43 |
150 | |
ad078c71 |
151 | return $sqla; |
1ff9018c |
152 | } |
153 | |
7741b7ad |
154 | sub _expand_select_clause_from { |
fe8b493f |
155 | my ($self, undef, $from) = @_; |
7741b7ad |
156 | +(from => $self->_expand_from_list(undef, $from)); |
157 | } |
158 | |
159 | sub _expand_from_list { |
160 | my ($self, undef, $args) = @_; |
161 | if (ref($args) eq 'HASH') { |
38e67490 |
162 | return $args if $args->{-from_list}; |
7741b7ad |
163 | return { -from_list => [ $self->expand_expr($args) ] }; |
164 | } |
165 | my @list; |
86a6ebf4 |
166 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
7741b7ad |
167 | while (my $entry = shift @args) { |
b99e9a14 |
168 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
169 | if ($1 eq 'as') { |
170 | $list[-1] = $self->expand_expr({ -as => [ |
171 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
172 | ]}); |
173 | next; |
174 | } |
7741b7ad |
175 | $entry = { $entry => shift @args }; |
176 | } |
177 | my $aqt = $self->expand_expr($entry, -ident); |
178 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
179 | $aqt->{-join}{from} = pop @list; |
180 | } |
181 | push @list, $aqt; |
182 | } |
183 | return { -from_list => \@list }; |
184 | } |
185 | |
186 | sub _expand_join { |
187 | my ($self, undef, $args) = @_; |
188 | my %proto = ( |
189 | ref($args) eq 'HASH' |
190 | ? %$args |
191 | : (to => $args->[0], @{$args}[1..$#$args]) |
192 | ); |
b99e9a14 |
193 | if (my $as = delete $proto{as}) { |
984db0d7 |
194 | $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); |
b99e9a14 |
195 | } |
e0eb8d26 |
196 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
13c99dad |
197 | $proto{using} = [ |
e0eb8d26 |
198 | map [ $self->expand_expr($_, -ident) ], |
199 | ref($using) eq 'ARRAY' ? @$using: $using |
13c99dad |
200 | ]; |
e0eb8d26 |
201 | } |
7741b7ad |
202 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
203 | sort keys %proto; |
204 | return +{ -join => \%ret }; |
205 | } |
206 | |
207 | sub _render_from_list { |
a01911a2 |
208 | my ($self, undef, $list) = @_; |
a1f8b6ef |
209 | return $self->join_query_parts(', ', @$list); |
7741b7ad |
210 | } |
211 | |
212 | sub _render_join { |
a01911a2 |
213 | my ($self, undef, $args) = @_; |
7741b7ad |
214 | |
215 | my @parts = ( |
412f9efe |
216 | $args->{from}, |
217 | $self->format_keyword(join '_', ($args->{type}||()), 'join'), |
51ccda04 |
218 | (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}), |
7741b7ad |
219 | ($args->{on} ? ( |
412f9efe |
220 | $self->format_keyword('on') , |
221 | $args->{on}, |
7741b7ad |
222 | ) : ()), |
223 | ($args->{using} ? ( |
412f9efe |
224 | $self->format_keyword('using'), |
13c99dad |
225 | '(', $args->{using}, ')', |
7741b7ad |
226 | ) : ()), |
227 | ); |
0236f122 |
228 | return $self->join_query_parts(' ', @parts); |
7741b7ad |
229 | } |
230 | |
b99e9a14 |
231 | sub _expand_op_as { |
232 | my ($self, undef, $vv, $k) = @_; |
984db0d7 |
233 | my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); |
234 | $k ||= shift @vv; |
235 | my $ik = $self->expand_expr($k, -ident); |
236 | return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } |
237 | if @vv == 1 and ref($vv[0]) eq 'HASH'; |
238 | |
239 | my @as = map $self->expand_expr($_, -ident), @vv; |
240 | return { -as => [ $ik, { -alias => \@as } ] }; |
b99e9a14 |
241 | } |
242 | |
243 | sub _render_as { |
a01911a2 |
244 | my ($self, undef, $args) = @_; |
984db0d7 |
245 | my ($thing, $alias) = @$args; |
0236f122 |
246 | return $self->join_query_parts( |
ac7992be |
247 | ' ', |
984db0d7 |
248 | $thing, |
ac7992be |
249 | $self->format_keyword('as'), |
984db0d7 |
250 | $alias, |
1ba47f38 |
251 | ); |
252 | } |
253 | |
254 | sub _render_alias { |
984db0d7 |
255 | my ($self, undef, $args) = @_; |
1ba47f38 |
256 | my ($as, @cols) = @$args; |
257 | return (@cols |
0236f122 |
258 | ? $self->join_query_parts('', |
a1f8b6ef |
259 | $as, |
3f312d2e |
260 | '(', |
261 | $self->join_query_parts( |
262 | ', ', |
263 | @cols |
264 | ), |
265 | ')', |
1ba47f38 |
266 | ) |
267 | : $self->render_aqt($as) |
b99e9a14 |
268 | ); |
269 | } |
270 | |
f9f1fdcd |
271 | sub _expand_update_clause_target { |
fe8b493f |
272 | my ($self, undef, $target) = @_; |
f9f1fdcd |
273 | +(target => $self->_expand_from_list(undef, $target)); |
274 | } |
275 | |
2f4717ad |
276 | sub _expand_cast { |
277 | my ($self, undef, $thing) = @_; |
278 | return { -func => [ cast => $thing ] } if ref($thing) eq 'HASH'; |
279 | my ($cast, $to) = @{$thing}; |
280 | +{ -func => [ cast => { -as => [ |
281 | $self->expand_expr($cast), |
282 | $self->expand_expr($to, -ident), |
283 | ] } ] }; |
284 | } |
285 | |
286 | sub _expand_alias { |
287 | my ($self, undef, $args) = @_; |
288 | if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { |
289 | $args = $alias; |
290 | } |
291 | +{ -alias => [ |
292 | map $self->expand_expr($_, -ident), |
293 | ref($args) eq 'ARRAY' ? @{$args} : $args |
294 | ] |
295 | } |
296 | } |
297 | |
298 | sub _expand_with { |
299 | my ($self, $name, $with) = @_; |
300 | my (undef, $type) = split '_', $name; |
301 | if (ref($with) eq 'HASH') { |
302 | return +{ |
303 | %$with, |
304 | queries => [ |
305 | map +[ |
306 | $self->expand_expr({ -alias => $_->[0] }, -ident), |
307 | $self->expand_expr($_->[1]), |
308 | ], @{$with->{queries}} |
309 | ] |
310 | } |
311 | } |
312 | my @with = @$with; |
313 | my @exp; |
314 | while (my ($alias, $query) = splice @with, 0, 2) { |
315 | push @exp, [ |
316 | $self->expand_expr({ -alias => $alias }, -ident), |
317 | $self->expand_expr($query) |
318 | ]; |
319 | } |
320 | return +(with => { ($type ? (type => $type) : ()), queries => \@exp }); |
321 | } |
322 | |
323 | sub _render_with { |
324 | my ($self, undef, $with) = @_; |
325 | my $q_part = $self->join_query_parts(', ', |
326 | map { |
327 | my ($alias, $query) = @$_; |
328 | $self->join_query_parts(' ', |
329 | $alias, |
330 | $self->format_keyword('as'), |
331 | $query, |
332 | ) |
333 | } @{$with->{queries}} |
334 | ); |
335 | return $self->join_query_parts(' ', |
336 | $self->format_keyword(join '_', 'with', ($with->{type}||'')), |
337 | $q_part, |
338 | ); |
339 | } |
340 | |
1ff9018c |
341 | 1; |