Commit | Line | Data |
f8392f56 |
1 | package SQL::Abstract::ExtraClauses; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use if $] < '5.010', 'MRO::Compat'; |
6 | use mro 'c3'; |
7 | use base qw(SQL::Abstract::Clauses); |
8 | |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
c53ad93e |
11 | sub register_defaults { |
12 | my $self = shift; |
13 | $self->next::method(@_); |
f7a20100 |
14 | my @clauses = $self->clauses_of('select'); |
15 | my @before_setop; |
16 | CLAUSE: foreach my $idx (0..$#clauses) { |
17 | if ($clauses[$idx] eq 'order_by') { |
18 | @before_setop = @clauses[0..$idx-1]; |
19 | splice(@clauses, $idx, 0, qw(setop group_by having)); |
20 | last CLAUSE; |
21 | } |
22 | } |
23 | die "Huh?" unless @before_setop; |
369e7844 |
24 | $self->clauses_of(select => 'with', @clauses); |
71c1b4d5 |
25 | $self->clause_expanders( |
26 | 'select.group_by', sub { |
1107714b |
27 | $_[0]->_expand_maybe_list_expr($_[2], -ident) |
71c1b4d5 |
28 | }, |
1107714b |
29 | 'select.having', sub { $_[0]->expand_expr($_[2]) }, |
71c1b4d5 |
30 | ); |
01dfea60 |
31 | foreach my $thing (qw(join from_list)) { |
32 | $self->expander($thing => "_expand_${thing}") |
33 | ->renderer($thing => "_render_${thing}") |
34 | } |
5d6fafbe |
35 | $self->op_expander(as => '_expand_op_as'); |
36 | $self->expander(as => '_expand_op_as'); |
37 | $self->renderer(as => '_render_as'); |
71c1b4d5 |
38 | |
e6b86bee |
39 | $self->clauses_of(update => sub { |
40 | my ($self, @clauses) = @_; |
41 | splice(@clauses, 2, 0, 'from'); |
42 | @clauses; |
43 | }); |
44 | |
45 | $self->clauses_of(delete => sub { |
46 | my ($self, @clauses) = @_; |
47 | splice(@clauses, 1, 0, 'using'); |
48 | @clauses; |
49 | }); |
50 | |
71c1b4d5 |
51 | $self->clause_expanders( |
52 | 'update.from' => '_expand_select_clause_from', |
53 | 'delete.using' => sub { |
1107714b |
54 | +(using => $_[0]->_expand_from_list(undef, $_[2])); |
71c1b4d5 |
55 | }, |
56 | 'insert.rowvalues' => sub { |
1107714b |
57 | +(from => $_[0]->expand_expr({ -values => $_[2] })); |
71c1b4d5 |
58 | }, |
59 | 'insert.select' => sub { |
1107714b |
60 | +(from => $_[0]->expand_expr({ -select => $_[2] })); |
71c1b4d5 |
61 | }, |
62 | ); |
37b399a8 |
63 | |
f7a20100 |
64 | # set ops |
65 | { |
66 | my $orig = $self->expander('select'); |
67 | $self->expander(select => sub { |
68 | my $self = shift; |
69 | my $exp = $self->$orig(@_); |
70 | return $exp unless my $setop = (my $sel = $exp->{-select})->{setop}; |
71 | if (my @keys = grep $sel->{$_}, @before_setop) { |
72 | my %inner; @inner{@keys} = delete @{$sel}{@keys}; |
73 | unshift @{(values(%$setop))[0]{queries}}, |
74 | { -select => \%inner }; |
75 | } |
76 | return $exp; |
77 | }); |
78 | } |
f7fd09f7 |
79 | my $expand_setop = sub { |
80 | my ($self, $setop, $args) = @_; |
81 | +{ "-${setop}" => { |
f7a20100 |
82 | %$args, |
83 | queries => [ map $self->expand_expr($_), @{$args->{queries}} ], |
84 | } }; |
f7fd09f7 |
85 | }; |
86 | $self->expanders(map +($_ => $expand_setop), qw(union intersect except)); |
f7a20100 |
87 | |
88 | $self->clause_renderer('select.setop' => sub { |
1107714b |
89 | my ($self, undef, $setop) = @_; |
f7a20100 |
90 | $self->render_aqt($setop); |
91 | }); |
92 | |
b42692a6 |
93 | $self->renderer($_ => sub { |
94 | my ($self, $setop, $args) = @_; |
95 | $self->join_clauses( |
96 | ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ', |
97 | map [ $self->render_aqt($_) ], @{$args->{queries}} |
98 | ); |
99 | }) for qw(union intersect except); |
100 | |
f7fd09f7 |
101 | foreach my $setop (qw(union intersect except)) { |
f7fd09f7 |
102 | |
103 | $self->clause_expander("select.${setop}" => sub { |
104 | +(setop => $_[0]->expand_expr({ |
105 | "-${setop}" => { |
1107714b |
106 | queries => (ref($_[2]) eq 'ARRAY' ? $_[2] : [ $_[2] ]), |
f7fd09f7 |
107 | } |
108 | })); |
109 | }); |
110 | $self->clause_expander("select.${setop}_all" => sub { |
111 | +(setop => $_[0]->expand_expr({ |
112 | "-${setop}" => { |
113 | type => 'all', |
1107714b |
114 | queries => (ref($_[2]) eq 'ARRAY' ? $_[2] : [ $_[2] ]), |
f7fd09f7 |
115 | } |
116 | })); |
117 | }); |
118 | } |
369e7844 |
119 | $self->clause_expander('select.with' => my $with_expander = sub { |
1107714b |
120 | my ($self, undef, $with) = @_; |
369e7844 |
121 | if (ref($with) eq 'HASH') { |
122 | return +{ |
123 | %$with, |
124 | queries => [ map $self->expand_expr($_), @{$with->{queries}} ] |
125 | } |
126 | } |
127 | my @with = @$with; |
128 | my @exp; |
129 | while (my ($name, $query) = splice @with, 0, 2) { |
130 | my @n = map $self->expand_expr($_, -ident), |
131 | ref($name) eq 'ARRAY' ? @$name : $name; |
132 | push @exp, [ |
133 | \@n, |
134 | $self->expand_expr($query) |
135 | ]; |
136 | } |
137 | return +{ queries => \@exp }; |
138 | }); |
139 | $self->clause_expander('select.with_recursive' => sub { |
1107714b |
140 | my ($self, undef, $with) = @_; |
141 | my $exp = $self->$with_expander(undef, $with); |
af407e9a |
142 | return +(with => +{ |
369e7844 |
143 | %$exp, |
144 | type => 'recursive' |
af407e9a |
145 | }); |
369e7844 |
146 | }); |
147 | $self->clause_renderer('select.with' => sub { |
1107714b |
148 | my ($self, undef, $with) = @_; |
369e7844 |
149 | my $q_part = [ $self->join_clauses(', ', |
150 | map { |
151 | my ($alias, $query) = @$_; |
152 | [ $self->join_clauses(' ', |
153 | [ $self->_render_alias($alias) ], |
154 | [ $self->format_keyword('as') ], |
155 | [ $self->render_aqt($query) ], |
156 | ) ] |
157 | } @{$with->{queries}} |
158 | ) ]; |
aed9ebda |
159 | return $self->join_clauses(' ', |
160 | [ $self->format_keyword(join '_', 'with', ($with->{type}||'')) ], |
369e7844 |
161 | $q_part, |
369e7844 |
162 | ); |
163 | }); |
f7a20100 |
164 | |
c53ad93e |
165 | return $self; |
f8392f56 |
166 | } |
167 | |
f7a20100 |
168 | sub format_keyword { $_[0]->_sqlcase(join ' ', split '_', $_[1]) } |
169 | |
f79455dc |
170 | sub _expand_select_clause_from { |
1107714b |
171 | my ($self, undef, $from) = @_; |
f79455dc |
172 | +(from => $self->_expand_from_list(undef, $from)); |
173 | } |
174 | |
175 | sub _expand_from_list { |
176 | my ($self, undef, $args) = @_; |
177 | if (ref($args) eq 'HASH') { |
178 | return { -from_list => [ $self->expand_expr($args) ] }; |
179 | } |
180 | my @list; |
b9e35873 |
181 | my @args = ref($args) eq 'ARRAY' ? @$args : ($args); |
f79455dc |
182 | while (my $entry = shift @args) { |
6990b2aa |
183 | if (!ref($entry) and $entry =~ /^-(.*)/) { |
184 | if ($1 eq 'as') { |
185 | $list[-1] = $self->expand_expr({ -as => [ |
186 | $list[-1], map +(ref($_) eq 'ARRAY' ? @$_ : $_), shift(@args) |
187 | ]}); |
188 | next; |
189 | } |
f79455dc |
190 | $entry = { $entry => shift @args }; |
191 | } |
192 | my $aqt = $self->expand_expr($entry, -ident); |
193 | if ($aqt->{-join} and not $aqt->{-join}{from}) { |
194 | $aqt->{-join}{from} = pop @list; |
195 | } |
196 | push @list, $aqt; |
197 | } |
198 | return { -from_list => \@list }; |
199 | } |
200 | |
201 | sub _expand_join { |
202 | my ($self, undef, $args) = @_; |
203 | my %proto = ( |
204 | ref($args) eq 'HASH' |
205 | ? %$args |
206 | : (to => $args->[0], @{$args}[1..$#$args]) |
207 | ); |
6990b2aa |
208 | if (my $as = delete $proto{as}) { |
209 | $proto{to} = { -as => [ $proto{to}, ref($as) eq 'ARRAY' ? @$as : $as ] }; |
210 | } |
0891ae97 |
211 | if (defined($proto{using}) and ref(my $using = $proto{using}) ne 'HASH') { |
212 | $proto{using} = { -row => [ |
213 | map [ $self->expand_expr($_, -ident) ], |
214 | ref($using) eq 'ARRAY' ? @$using: $using |
215 | ] }; |
216 | } |
f79455dc |
217 | my %ret = map +($_ => $self->expand_expr($proto{$_}, -ident)), |
218 | sort keys %proto; |
219 | return +{ -join => \%ret }; |
220 | } |
221 | |
222 | sub _render_from_list { |
6c39a2f7 |
223 | my ($self, undef, $list) = @_; |
6a22196d |
224 | return $self->join_clauses(', ', map [ $self->render_aqt($_) ], @$list); |
f79455dc |
225 | } |
226 | |
227 | sub _render_join { |
6c39a2f7 |
228 | my ($self, undef, $args) = @_; |
f79455dc |
229 | |
230 | my @parts = ( |
231 | [ $self->render_aqt($args->{from}) ], |
f7a20100 |
232 | [ $self->format_keyword(join '_', ($args->{type}||()), 'join') ], |
76aa8b0d |
233 | [ $self->render_aqt( |
0891ae97 |
234 | map +($_->{-ident} || $_->{-as} ? $_ : { -row => [ $_ ] }), $args->{to} |
76aa8b0d |
235 | ) ], |
f79455dc |
236 | ($args->{on} ? ( |
f7a20100 |
237 | [ $self->format_keyword('on') ], |
f79455dc |
238 | [ $self->render_aqt($args->{on}) ], |
239 | ) : ()), |
240 | ($args->{using} ? ( |
f7a20100 |
241 | [ $self->format_keyword('using') ], |
f79455dc |
242 | [ $self->render_aqt($args->{using}) ], |
243 | ) : ()), |
244 | ); |
6a22196d |
245 | return $self->join_clauses(' ', @parts); |
f79455dc |
246 | } |
247 | |
6990b2aa |
248 | sub _expand_op_as { |
249 | my ($self, undef, $vv, $k) = @_; |
250 | my @as = map $self->expand_expr($_, -ident), |
251 | (defined($k) ? ($k) : ()), ref($vv) eq 'ARRAY' ? @$vv : $vv; |
252 | return { -as => \@as }; |
253 | } |
254 | |
255 | sub _render_as { |
6c39a2f7 |
256 | my ($self, undef, $args) = @_; |
369e7844 |
257 | my ($thing, @alias) = @$args; |
6a22196d |
258 | return $self->join_clauses( |
6990b2aa |
259 | ' ', |
434c40f1 |
260 | [ $self->render_aqt($thing) ], |
f7a20100 |
261 | [ $self->format_keyword('as') ], |
369e7844 |
262 | [ $self->_render_alias(\@alias) ], |
263 | ); |
264 | } |
265 | |
266 | sub _render_alias { |
267 | my ($self, $args) = @_; |
268 | my ($as, @cols) = @$args; |
269 | return (@cols |
270 | ? $self->join_clauses('', |
271 | [ $self->render_aqt($as) ], |
272 | [ '(' ], |
273 | [ $self->join_clauses( |
274 | ', ', |
275 | map [ $self->render_aqt($_) ], @cols |
276 | ) ], |
277 | [ ')' ], |
278 | ) |
279 | : $self->render_aqt($as) |
6990b2aa |
280 | ); |
281 | } |
282 | |
af407e9a |
283 | sub _expand_update_clause_target { |
1107714b |
284 | my ($self, undef, $target) = @_; |
af407e9a |
285 | +(target => $self->_expand_from_list(undef, $target)); |
286 | } |
287 | |
f8392f56 |
288 | 1; |