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( |
8 | expand_expr render_aqt |
9 | clauses_of clause_expander clause_expanders |
10 | clause_renderer clause_renderers |
11 | expander expanders op_expander op_expanders |
12 | renderer renderers op_renderer op_renderers |
13 | wrap_expander wrap_renderer wrap_op_expander wrap_op_renderer |
14 | format_keyword join_query_parts |
15 | ) ], |
16 | ); |
1ff9018c |
17 | |
18 | BEGIN { *puke = \&SQL::Abstract::puke } |
19 | |
df5d0507 |
20 | sub cb { |
21 | my ($self, $method) = @_; |
22 | return sub { local $self->{sqla} = shift; $self->$method(@_) }; |
23 | } |
24 | |
25 | sub apply_to { |
26 | my ($self, $sqla) = @_; |
27 | $self = $self->new unless ref($self); |
28 | local $self->{sqla} = $sqla; |
2b0b3d43 |
29 | my @clauses = $self->clauses_of('select'); |
30 | my @before_setop; |
31 | CLAUSE: foreach my $idx (0..$#clauses) { |
32 | if ($clauses[$idx] eq 'order_by') { |
33 | @before_setop = @clauses[0..$idx-1]; |
34 | splice(@clauses, $idx, 0, qw(setop group_by having)); |
35 | last CLAUSE; |
36 | } |
37 | } |
38 | die "Huh?" unless @before_setop; |
1ba47f38 |
39 | $self->clauses_of(select => 'with', @clauses); |
58ebc7fa |
40 | $self->clause_expanders( |
df5d0507 |
41 | 'select.group_by', $self->cb(sub { |
42 | $_[0]->sqla->_expand_maybe_list_expr($_[2], -ident) |
43 | }), |
44 | 'select.having', $self->cb(sub { $_[0]->expand_expr($_[2]) }), |
58ebc7fa |
45 | ); |
a6227174 |
46 | foreach my $thing (qw(join from_list)) { |
df5d0507 |
47 | $self->expander($thing => $self->cb("_expand_${thing}")) |
48 | ->renderer($thing => $self->cb("_render_${thing}")) |
a6227174 |
49 | } |
df5d0507 |
50 | $self->op_expander(as => $self->cb('_expand_op_as')); |
51 | $self->expander(as => $self->cb('_expand_op_as')); |
52 | $self->renderer(as => $self->cb('_render_as')); |
53 | $self->expander(alias => $self->cb(sub { |
984db0d7 |
54 | my ($self, undef, $args) = @_; |
55 | if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { |
56 | $args = $alias; |
57 | } |
58 | +{ -alias => [ |
59 | map $self->expand_expr($_, -ident), |
60 | ref($args) eq 'ARRAY' ? @{$args} : $args |
61 | ] |
62 | } |
df5d0507 |
63 | })); |
64 | $self->renderer(alias => $self->cb('_render_alias')); |
58ebc7fa |
65 | |
ee706e89 |
66 | $self->clauses_of(update => sub { |
67 | my ($self, @clauses) = @_; |
68 | splice(@clauses, 2, 0, 'from'); |
69 | @clauses; |
70 | }); |
71 | |
72 | $self->clauses_of(delete => sub { |
73 | my ($self, @clauses) = @_; |
74 | splice(@clauses, 1, 0, 'using'); |
75 | @clauses; |
76 | }); |
77 | |
58ebc7fa |
78 | $self->clause_expanders( |
df5d0507 |
79 | 'update.from' => $self->cb('_expand_select_clause_from'), |
80 | 'delete.using' => $self->cb(sub { |
fe8b493f |
81 | +(using => $_[0]->_expand_from_list(undef, $_[2])); |
df5d0507 |
82 | }), |
83 | 'insert.rowvalues' => $self->cb(sub { |
fe8b493f |
84 | +(from => $_[0]->expand_expr({ -values => $_[2] })); |
df5d0507 |
85 | }), |
86 | 'insert.select' => $self->cb(sub { |
fe8b493f |
87 | +(from => $_[0]->expand_expr({ -select => $_[2] })); |
df5d0507 |
88 | }), |
58ebc7fa |
89 | ); |
26994fdd |
90 | |
2b0b3d43 |
91 | # set ops |
3f9899e5 |
92 | $self->wrap_expander(select => sub { |
93 | my $orig = shift; |
df5d0507 |
94 | $self->cb(sub { |
2b0b3d43 |
95 | my $self = shift; |
df5d0507 |
96 | my $exp = $self->sqla->$orig(@_); |
2b0b3d43 |
97 | return $exp unless my $setop = (my $sel = $exp->{-select})->{setop}; |
98 | if (my @keys = grep $sel->{$_}, @before_setop) { |
99 | my %inner; @inner{@keys} = delete @{$sel}{@keys}; |
100 | unshift @{(values(%$setop))[0]{queries}}, |
101 | { -select => \%inner }; |
102 | } |
103 | return $exp; |
df5d0507 |
104 | }); |
3f9899e5 |
105 | }); |
df5d0507 |
106 | my $expand_setop = $self->cb(sub { |
d175037f |
107 | my ($self, $setop, $args) = @_; |
108 | +{ "-${setop}" => { |
2b0b3d43 |
109 | %$args, |
110 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
111 | } }; |
df5d0507 |
112 | }); |
d175037f |
113 | $self->expanders(map +($_ => $expand_setop), qw(union intersect except)); |
2b0b3d43 |
114 | |
df5d0507 |
115 | $self->clause_renderer('select.setop' => $self->cb(sub { |
fe8b493f |
116 | my ($self, undef, $setop) = @_; |
3f312d2e |
117 | $self->render_aqt($setop); |
df5d0507 |
118 | })); |
2b0b3d43 |
119 | |
df5d0507 |
120 | $self->renderer($_ => $self->cb(sub { |
260e0f29 |
121 | my ($self, $setop, $args) = @_; |
0236f122 |
122 | $self->join_query_parts( |
260e0f29 |
123 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
a1f8b6ef |
124 | @{$args->{queries}} |
260e0f29 |
125 | ); |
df5d0507 |
126 | })) for qw(union intersect except); |
260e0f29 |
127 | |
df5d0507 |
128 | my $setop_expander = $self->cb(sub { |
f61bfd7b |
129 | my ($self, $setop, $args) = @_; |
130 | my ($op, $type) = split '_', $setop; |
131 | +(setop => $self->expand_expr({ |
132 | "-${op}" => { |
133 | ($type ? (type => $type) : ()), |
134 | queries => (ref($args) eq 'ARRAY' ? $args : [ $args ]) |
135 | } |
136 | })); |
df5d0507 |
137 | }); |
f61bfd7b |
138 | |
139 | $self->clause_expanders( |
140 | map +($_ => $setop_expander), |
141 | map "select.${_}", |
142 | map +($_, "${_}_all", "${_}_distinct"), |
143 | qw(union intersect except) |
144 | ); |
d175037f |
145 | |
df5d0507 |
146 | $self->clause_expander('select.with' => my $with_expander = $self->cb(sub { |
7237eb3c |
147 | my ($self, $name, $with) = @_; |
148 | my (undef, $type) = split '_', $name; |
1ba47f38 |
149 | if (ref($with) eq 'HASH') { |
150 | return +{ |
151 | %$with, |
38e67490 |
152 | queries => [ |
153 | map +[ |
984db0d7 |
154 | $self->expand_expr({ -alias => $_->[0] }, -ident), |
38e67490 |
155 | $self->expand_expr($_->[1]), |
156 | ], @{$with->{queries}} |
157 | ] |
1ba47f38 |
158 | } |
159 | } |
160 | my @with = @$with; |
161 | my @exp; |
38e67490 |
162 | while (my ($alias, $query) = splice @with, 0, 2) { |
1ba47f38 |
163 | push @exp, [ |
984db0d7 |
164 | $self->expand_expr({ -alias => $alias }, -ident), |
1ba47f38 |
165 | $self->expand_expr($query) |
166 | ]; |
167 | } |
7237eb3c |
168 | return +(with => { ($type ? (type => $type) : ()), queries => \@exp }); |
df5d0507 |
169 | })); |
7237eb3c |
170 | $self->clause_expander('select.with_recursive', $with_expander); |
df5d0507 |
171 | $self->clause_renderer('select.with' => my $with_renderer = $self->cb(sub { |
fe8b493f |
172 | my ($self, undef, $with) = @_; |
3f312d2e |
173 | my $q_part = $self->join_query_parts(', ', |
1ba47f38 |
174 | map { |
175 | my ($alias, $query) = @$_; |
3f312d2e |
176 | $self->join_query_parts(' ', |
984db0d7 |
177 | $alias, |
7b811acd |
178 | $self->format_keyword('as'), |
a1f8b6ef |
179 | $query, |
3f312d2e |
180 | ) |
1ba47f38 |
181 | } @{$with->{queries}} |
3f312d2e |
182 | ); |
0236f122 |
183 | return $self->join_query_parts(' ', |
7b811acd |
184 | $self->format_keyword(join '_', 'with', ($with->{type}||'')), |
1ba47f38 |
185 | $q_part, |
1ba47f38 |
186 | ); |
df5d0507 |
187 | })); |
a97ecd95 |
188 | foreach my $stmt (qw(insert update delete)) { |
189 | $self->clauses_of($stmt => 'with', $self->clauses_of($stmt)); |
190 | $self->clause_expander("${stmt}.$_", $with_expander) |
191 | for qw(with with_recursive); |
192 | $self->clause_renderer("${stmt}.with", $with_renderer); |
193 | } |
df5d0507 |
194 | $self->expander(cast => $self->cb(sub { |
e07de273 |
195 | return { -func => [ cast => $_[2] ] } if ref($_[2]) eq 'HASH'; |
a867b2df |
196 | my ($cast, $to) = @{$_[2]}; |
197 | +{ -func => [ cast => { -as => [ |
198 | $self->expand_expr($cast), |
199 | $self->expand_expr($to, -ident), |
200 | ] } ] }; |
df5d0507 |
201 | })); |
202 | |
203 | $self->clause_expanders( |
204 | "select.from", $self->cb('_expand_select_clause_from'), |
205 | "update.target", $self->cb('_expand_update_clause_target'), |
206 | "update.update", $self->cb('_expand_update_clause_target'), |
207 | ); |
2b0b3d43 |
208 | |
b4546197 |
209 | return $self; |
1ff9018c |
210 | } |
211 | |
7741b7ad |
212 | sub _expand_select_clause_from { |
fe8b493f |
213 | my ($self, undef, $from) = @_; |
7741b7ad |
214 | +(from => $self->_expand_from_list(undef, $from)); |
215 | } |
216 | |
217 | sub _expand_from_list { |
218 | my ($self, undef, $args) = @_; |
219 | if (ref($args) eq 'HASH') { |
38e67490 |
220 | return $args if $args->{-from_list}; |
7741b7ad |
221 | return { -from_list => [ $self->expand_expr($args) ] }; |
222 | } |
223 | my @list; |
86a6ebf4 |
224 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
7741b7ad |
225 | while (my $entry = shift @args) { |
b99e9a14 |
226 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
227 | if ($1 eq 'as') { |
228 | $list[-1] = $self->expand_expr({ -as => [ |
229 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
230 | ]}); |
231 | next; |
232 | } |
7741b7ad |
233 | $entry = { $entry => shift @args }; |
234 | } |
235 | my $aqt = $self->expand_expr($entry, -ident); |
236 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
237 | $aqt->{-join}{from} = pop @list; |
238 | } |
239 | push @list, $aqt; |
240 | } |
241 | return { -from_list => \@list }; |
242 | } |
243 | |
244 | sub _expand_join { |
245 | my ($self, undef, $args) = @_; |
246 | my %proto = ( |
247 | ref($args) eq 'HASH' |
248 | ? %$args |
249 | : (to => $args->[0], @{$args}[1..$#$args]) |
250 | ); |
b99e9a14 |
251 | if (my $as = delete $proto{as}) { |
984db0d7 |
252 | $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); |
b99e9a14 |
253 | } |
e0eb8d26 |
254 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
13c99dad |
255 | $proto{using} = [ |
e0eb8d26 |
256 | map [ $self->expand_expr($_, -ident) ], |
257 | ref($using) eq 'ARRAY' ? @$using: $using |
13c99dad |
258 | ]; |
e0eb8d26 |
259 | } |
7741b7ad |
260 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
261 | sort keys %proto; |
262 | return +{ -join => \%ret }; |
263 | } |
264 | |
265 | sub _render_from_list { |
a01911a2 |
266 | my ($self, undef, $list) = @_; |
a1f8b6ef |
267 | return $self->join_query_parts(', ', @$list); |
7741b7ad |
268 | } |
269 | |
270 | sub _render_join { |
a01911a2 |
271 | my ($self, undef, $args) = @_; |
7741b7ad |
272 | |
273 | my @parts = ( |
412f9efe |
274 | $args->{from}, |
275 | $self->format_keyword(join '_', ($args->{type}||()), 'join'), |
51ccda04 |
276 | (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}), |
7741b7ad |
277 | ($args->{on} ? ( |
412f9efe |
278 | $self->format_keyword('on') , |
279 | $args->{on}, |
7741b7ad |
280 | ) : ()), |
281 | ($args->{using} ? ( |
412f9efe |
282 | $self->format_keyword('using'), |
13c99dad |
283 | '(', $args->{using}, ')', |
7741b7ad |
284 | ) : ()), |
285 | ); |
0236f122 |
286 | return $self->join_query_parts(' ', @parts); |
7741b7ad |
287 | } |
288 | |
b99e9a14 |
289 | sub _expand_op_as { |
290 | my ($self, undef, $vv, $k) = @_; |
984db0d7 |
291 | my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); |
292 | $k ||= shift @vv; |
293 | my $ik = $self->expand_expr($k, -ident); |
294 | return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } |
295 | if @vv == 1 and ref($vv[0]) eq 'HASH'; |
296 | |
297 | my @as = map $self->expand_expr($_, -ident), @vv; |
298 | return { -as => [ $ik, { -alias => \@as } ] }; |
b99e9a14 |
299 | } |
300 | |
301 | sub _render_as { |
a01911a2 |
302 | my ($self, undef, $args) = @_; |
984db0d7 |
303 | my ($thing, $alias) = @$args; |
0236f122 |
304 | return $self->join_query_parts( |
ac7992be |
305 | ' ', |
984db0d7 |
306 | $thing, |
ac7992be |
307 | $self->format_keyword('as'), |
984db0d7 |
308 | $alias, |
1ba47f38 |
309 | ); |
310 | } |
311 | |
312 | sub _render_alias { |
984db0d7 |
313 | my ($self, undef, $args) = @_; |
1ba47f38 |
314 | my ($as, @cols) = @$args; |
315 | return (@cols |
0236f122 |
316 | ? $self->join_query_parts('', |
a1f8b6ef |
317 | $as, |
3f312d2e |
318 | '(', |
319 | $self->join_query_parts( |
320 | ', ', |
321 | @cols |
322 | ), |
323 | ')', |
1ba47f38 |
324 | ) |
325 | : $self->render_aqt($as) |
b99e9a14 |
326 | ); |
327 | } |
328 | |
f9f1fdcd |
329 | sub _expand_update_clause_target { |
fe8b493f |
330 | my ($self, undef, $target) = @_; |
f9f1fdcd |
331 | +(target => $self->_expand_from_list(undef, $target)); |
332 | } |
333 | |
1ff9018c |
334 | 1; |