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 |
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 { |
36 | $_[0]->sqla->_expand_maybe_list_expr($_[2], -ident) |
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')); |
47 | $sqla->expander(alias => $self->cb(sub { |
984db0d7 |
48 | my ($self, undef, $args) = @_; |
49 | if (ref($args) eq 'HASH' and my $alias = $args->{-alias}) { |
50 | $args = $alias; |
51 | } |
52 | +{ -alias => [ |
53 | map $self->expand_expr($_, -ident), |
54 | ref($args) eq 'ARRAY' ? @{$args} : $args |
55 | ] |
56 | } |
df5d0507 |
57 | })); |
ad078c71 |
58 | $sqla->renderer(alias => $self->cb('_render_alias')); |
58ebc7fa |
59 | |
ad078c71 |
60 | $sqla->clauses_of(update => sub { |
ee706e89 |
61 | my ($self, @clauses) = @_; |
62 | splice(@clauses, 2, 0, 'from'); |
63 | @clauses; |
64 | }); |
65 | |
ad078c71 |
66 | $sqla->clauses_of(delete => sub { |
ee706e89 |
67 | my ($self, @clauses) = @_; |
68 | splice(@clauses, 1, 0, 'using'); |
69 | @clauses; |
70 | }); |
71 | |
ad078c71 |
72 | $sqla->clause_expanders( |
df5d0507 |
73 | 'update.from' => $self->cb('_expand_select_clause_from'), |
74 | 'delete.using' => $self->cb(sub { |
fe8b493f |
75 | +(using => $_[0]->_expand_from_list(undef, $_[2])); |
df5d0507 |
76 | }), |
77 | 'insert.rowvalues' => $self->cb(sub { |
fe8b493f |
78 | +(from => $_[0]->expand_expr({ -values => $_[2] })); |
df5d0507 |
79 | }), |
80 | 'insert.select' => $self->cb(sub { |
fe8b493f |
81 | +(from => $_[0]->expand_expr({ -select => $_[2] })); |
df5d0507 |
82 | }), |
58ebc7fa |
83 | ); |
26994fdd |
84 | |
2b0b3d43 |
85 | # set ops |
ad078c71 |
86 | $sqla->wrap_expander(select => sub { |
3f9899e5 |
87 | my $orig = shift; |
df5d0507 |
88 | $self->cb(sub { |
2b0b3d43 |
89 | my $self = shift; |
df5d0507 |
90 | my $exp = $self->sqla->$orig(@_); |
2b0b3d43 |
91 | return $exp unless my $setop = (my $sel = $exp->{-select})->{setop}; |
92 | if (my @keys = grep $sel->{$_}, @before_setop) { |
93 | my %inner; @inner{@keys} = delete @{$sel}{@keys}; |
94 | unshift @{(values(%$setop))[0]{queries}}, |
95 | { -select => \%inner }; |
96 | } |
97 | return $exp; |
df5d0507 |
98 | }); |
3f9899e5 |
99 | }); |
df5d0507 |
100 | my $expand_setop = $self->cb(sub { |
d175037f |
101 | my ($self, $setop, $args) = @_; |
102 | +{ "-${setop}" => { |
2b0b3d43 |
103 | %$args, |
104 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
105 | } }; |
df5d0507 |
106 | }); |
ad078c71 |
107 | $sqla->expanders(map +($_ => $expand_setop), qw(union intersect except)); |
2b0b3d43 |
108 | |
ad078c71 |
109 | $sqla->clause_renderer('select.setop' => $self->cb(sub { |
fe8b493f |
110 | my ($self, undef, $setop) = @_; |
3f312d2e |
111 | $self->render_aqt($setop); |
df5d0507 |
112 | })); |
2b0b3d43 |
113 | |
ad078c71 |
114 | $sqla->renderer($_ => $self->cb(sub { |
260e0f29 |
115 | my ($self, $setop, $args) = @_; |
0236f122 |
116 | $self->join_query_parts( |
260e0f29 |
117 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
a1f8b6ef |
118 | @{$args->{queries}} |
260e0f29 |
119 | ); |
df5d0507 |
120 | })) for qw(union intersect except); |
260e0f29 |
121 | |
df5d0507 |
122 | my $setop_expander = $self->cb(sub { |
f61bfd7b |
123 | my ($self, $setop, $args) = @_; |
124 | my ($op, $type) = split '_', $setop; |
125 | +(setop => $self->expand_expr({ |
126 | "-${op}" => { |
127 | ($type ? (type => $type) : ()), |
128 | queries => (ref($args) eq 'ARRAY' ? $args : [ $args ]) |
129 | } |
130 | })); |
df5d0507 |
131 | }); |
f61bfd7b |
132 | |
ad078c71 |
133 | $sqla->clause_expanders( |
f61bfd7b |
134 | map +($_ => $setop_expander), |
135 | map "select.${_}", |
136 | map +($_, "${_}_all", "${_}_distinct"), |
137 | qw(union intersect except) |
138 | ); |
d175037f |
139 | |
ad078c71 |
140 | $sqla->clause_expander('select.with' => my $with_expander = $self->cb(sub { |
7237eb3c |
141 | my ($self, $name, $with) = @_; |
142 | my (undef, $type) = split '_', $name; |
1ba47f38 |
143 | if (ref($with) eq 'HASH') { |
144 | return +{ |
145 | %$with, |
38e67490 |
146 | queries => [ |
147 | map +[ |
984db0d7 |
148 | $self->expand_expr({ -alias => $_->[0] }, -ident), |
38e67490 |
149 | $self->expand_expr($_->[1]), |
150 | ], @{$with->{queries}} |
151 | ] |
1ba47f38 |
152 | } |
153 | } |
154 | my @with = @$with; |
155 | my @exp; |
38e67490 |
156 | while (my ($alias, $query) = splice @with, 0, 2) { |
1ba47f38 |
157 | push @exp, [ |
984db0d7 |
158 | $self->expand_expr({ -alias => $alias }, -ident), |
1ba47f38 |
159 | $self->expand_expr($query) |
160 | ]; |
161 | } |
7237eb3c |
162 | return +(with => { ($type ? (type => $type) : ()), queries => \@exp }); |
df5d0507 |
163 | })); |
ad078c71 |
164 | $sqla->clause_expander('select.with_recursive', $with_expander); |
165 | $sqla->clause_renderer('select.with' => my $with_renderer = $self->cb(sub { |
fe8b493f |
166 | my ($self, undef, $with) = @_; |
3f312d2e |
167 | my $q_part = $self->join_query_parts(', ', |
1ba47f38 |
168 | map { |
169 | my ($alias, $query) = @$_; |
3f312d2e |
170 | $self->join_query_parts(' ', |
984db0d7 |
171 | $alias, |
7b811acd |
172 | $self->format_keyword('as'), |
a1f8b6ef |
173 | $query, |
3f312d2e |
174 | ) |
1ba47f38 |
175 | } @{$with->{queries}} |
3f312d2e |
176 | ); |
0236f122 |
177 | return $self->join_query_parts(' ', |
7b811acd |
178 | $self->format_keyword(join '_', 'with', ($with->{type}||'')), |
1ba47f38 |
179 | $q_part, |
1ba47f38 |
180 | ); |
df5d0507 |
181 | })); |
a97ecd95 |
182 | foreach my $stmt (qw(insert update delete)) { |
ad078c71 |
183 | $sqla->clauses_of($stmt => 'with', $sqla->clauses_of($stmt)); |
184 | $sqla->clause_expander("${stmt}.$_", $with_expander) |
a97ecd95 |
185 | for qw(with with_recursive); |
ad078c71 |
186 | $sqla->clause_renderer("${stmt}.with", $with_renderer); |
a97ecd95 |
187 | } |
ad078c71 |
188 | $sqla->expander(cast => $self->cb(sub { |
e07de273 |
189 | return { -func => [ cast => $_[2] ] } if ref($_[2]) eq 'HASH'; |
a867b2df |
190 | my ($cast, $to) = @{$_[2]}; |
191 | +{ -func => [ cast => { -as => [ |
192 | $self->expand_expr($cast), |
193 | $self->expand_expr($to, -ident), |
194 | ] } ] }; |
df5d0507 |
195 | })); |
196 | |
ad078c71 |
197 | $sqla->clause_expanders( |
df5d0507 |
198 | "select.from", $self->cb('_expand_select_clause_from'), |
199 | "update.target", $self->cb('_expand_update_clause_target'), |
200 | "update.update", $self->cb('_expand_update_clause_target'), |
201 | ); |
2b0b3d43 |
202 | |
ad078c71 |
203 | return $sqla; |
1ff9018c |
204 | } |
205 | |
7741b7ad |
206 | sub _expand_select_clause_from { |
fe8b493f |
207 | my ($self, undef, $from) = @_; |
7741b7ad |
208 | +(from => $self->_expand_from_list(undef, $from)); |
209 | } |
210 | |
211 | sub _expand_from_list { |
212 | my ($self, undef, $args) = @_; |
213 | if (ref($args) eq 'HASH') { |
38e67490 |
214 | return $args if $args->{-from_list}; |
7741b7ad |
215 | return { -from_list => [ $self->expand_expr($args) ] }; |
216 | } |
217 | my @list; |
86a6ebf4 |
218 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
7741b7ad |
219 | while (my $entry = shift @args) { |
b99e9a14 |
220 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
221 | if ($1 eq 'as') { |
222 | $list[-1] = $self->expand_expr({ -as => [ |
223 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
224 | ]}); |
225 | next; |
226 | } |
7741b7ad |
227 | $entry = { $entry => shift @args }; |
228 | } |
229 | my $aqt = $self->expand_expr($entry, -ident); |
230 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
231 | $aqt->{-join}{from} = pop @list; |
232 | } |
233 | push @list, $aqt; |
234 | } |
235 | return { -from_list => \@list }; |
236 | } |
237 | |
238 | sub _expand_join { |
239 | my ($self, undef, $args) = @_; |
240 | my %proto = ( |
241 | ref($args) eq 'HASH' |
242 | ? %$args |
243 | : (to => $args->[0], @{$args}[1..$#$args]) |
244 | ); |
b99e9a14 |
245 | if (my $as = delete $proto{as}) { |
984db0d7 |
246 | $proto{to} = $self->expand_expr({ -as => [ $proto{to}, $as ] }); |
b99e9a14 |
247 | } |
e0eb8d26 |
248 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
13c99dad |
249 | $proto{using} = [ |
e0eb8d26 |
250 | map [ $self->expand_expr($_, -ident) ], |
251 | ref($using) eq 'ARRAY' ? @$using: $using |
13c99dad |
252 | ]; |
e0eb8d26 |
253 | } |
7741b7ad |
254 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
255 | sort keys %proto; |
256 | return +{ -join => \%ret }; |
257 | } |
258 | |
259 | sub _render_from_list { |
a01911a2 |
260 | my ($self, undef, $list) = @_; |
a1f8b6ef |
261 | return $self->join_query_parts(', ', @$list); |
7741b7ad |
262 | } |
263 | |
264 | sub _render_join { |
a01911a2 |
265 | my ($self, undef, $args) = @_; |
7741b7ad |
266 | |
267 | my @parts = ( |
412f9efe |
268 | $args->{from}, |
269 | $self->format_keyword(join '_', ($args->{type}||()), 'join'), |
51ccda04 |
270 | (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}), |
7741b7ad |
271 | ($args->{on} ? ( |
412f9efe |
272 | $self->format_keyword('on') , |
273 | $args->{on}, |
7741b7ad |
274 | ) : ()), |
275 | ($args->{using} ? ( |
412f9efe |
276 | $self->format_keyword('using'), |
13c99dad |
277 | '(', $args->{using}, ')', |
7741b7ad |
278 | ) : ()), |
279 | ); |
0236f122 |
280 | return $self->join_query_parts(' ', @parts); |
7741b7ad |
281 | } |
282 | |
b99e9a14 |
283 | sub _expand_op_as { |
284 | my ($self, undef, $vv, $k) = @_; |
984db0d7 |
285 | my @vv = (ref($vv) eq 'ARRAY' ? @$vv : $vv); |
286 | $k ||= shift @vv; |
287 | my $ik = $self->expand_expr($k, -ident); |
288 | return +{ -as => [ $ik, $self->expand_expr($vv[0], -alias) ] } |
289 | if @vv == 1 and ref($vv[0]) eq 'HASH'; |
290 | |
291 | my @as = map $self->expand_expr($_, -ident), @vv; |
292 | return { -as => [ $ik, { -alias => \@as } ] }; |
b99e9a14 |
293 | } |
294 | |
295 | sub _render_as { |
a01911a2 |
296 | my ($self, undef, $args) = @_; |
984db0d7 |
297 | my ($thing, $alias) = @$args; |
0236f122 |
298 | return $self->join_query_parts( |
ac7992be |
299 | ' ', |
984db0d7 |
300 | $thing, |
ac7992be |
301 | $self->format_keyword('as'), |
984db0d7 |
302 | $alias, |
1ba47f38 |
303 | ); |
304 | } |
305 | |
306 | sub _render_alias { |
984db0d7 |
307 | my ($self, undef, $args) = @_; |
1ba47f38 |
308 | my ($as, @cols) = @$args; |
309 | return (@cols |
0236f122 |
310 | ? $self->join_query_parts('', |
a1f8b6ef |
311 | $as, |
3f312d2e |
312 | '(', |
313 | $self->join_query_parts( |
314 | ', ', |
315 | @cols |
316 | ), |
317 | ')', |
1ba47f38 |
318 | ) |
319 | : $self->render_aqt($as) |
b99e9a14 |
320 | ); |
321 | } |
322 | |
f9f1fdcd |
323 | sub _expand_update_clause_target { |
fe8b493f |
324 | my ($self, undef, $target) = @_; |
f9f1fdcd |
325 | +(target => $self->_expand_from_list(undef, $target)); |
326 | } |
327 | |
1ff9018c |
328 | 1; |