Commit | Line | Data |
bbe638af |
1 | package SQL::Abstract::Clauses; |
2 | |
3 | use strict; |
4 | use warnings; |
ccb7f3d6 |
5 | use if $] < '5.010', 'MRO::Compat'; |
bbe638af |
6 | use mro 'c3'; |
7 | use base 'SQL::Abstract'; |
8 | |
1bcd361f |
9 | BEGIN { *puke = \&SQL::Abstract::puke } |
10 | |
bbe638af |
11 | sub new { |
12 | shift->next::method(@_)->register_defaults |
13 | } |
14 | |
15 | sub register_defaults { |
16 | my ($self) = @_; |
17 | $self->{clauses_of}{select} = [ qw(select from where order_by) ]; |
18 | $self->{expand}{select} = sub { shift->_expand_statement(@_) }; |
a01911a2 |
19 | $self->{render}{select} = sub { shift->_render_statement(@_) }; |
df0f5af9 |
20 | $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_" |
21 | for @{$self->{clauses_of}{select}}; |
46158aa8 |
22 | $self->{clauses_of}{update} = [ qw(target set where returning) ]; |
1bcd361f |
23 | $self->{expand}{update} = sub { shift->_expand_statement(@_) }; |
a01911a2 |
24 | $self->{render}{update} = sub { shift->_render_statement(@_) }; |
889fdd38 |
25 | $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_" |
26 | for @{$self->{clauses_of}{update}}; |
46158aa8 |
27 | $self->{expand_clause}{'update.update'} = '_expand_update_clause_target'; |
28 | $self->{render_clause}{'update.target'} = sub { |
fe8b493f |
29 | my ($self, undef, $target) = @_; |
46158aa8 |
30 | my ($sql, @bind) = $self->render_aqt($target); |
31 | ($self->_sqlcase('update ').$sql, @bind); |
32 | }; |
33 | $self->{clauses_of}{delete} = [ qw(target where returning) ]; |
77e8c03d |
34 | $self->{expand}{delete} = sub { shift->_expand_statement(@_) }; |
a01911a2 |
35 | $self->{render}{delete} = sub { shift->_render_statement(@_) }; |
44296b4e |
36 | $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_" |
37 | for @{$self->{clauses_of}{delete}}; |
46158aa8 |
38 | $self->{expand_clause}{"delete.from"} = '_expand_delete_clause_target'; |
39 | $self->{render_clause}{'delete.target'} = sub { |
fe8b493f |
40 | my ($self, undef, $from) = @_; |
46158aa8 |
41 | my ($sql, @bind) = $self->render_aqt($from); |
42 | ($self->_sqlcase('delete from ').$sql, @bind); |
43 | }; |
2b057b28 |
44 | $self->{clauses_of}{insert} = [ |
93253a11 |
45 | 'target', 'fields', 'from', 'returning' |
2b057b28 |
46 | ]; |
39544e0e |
47 | $self->{expand}{insert} = sub { shift->_expand_statement(@_) }; |
a01911a2 |
48 | $self->{render}{insert} = sub { shift->_render_statement(@_) }; |
46158aa8 |
49 | $self->{expand_clause}{'insert.into'} = '_expand_insert_clause_target'; |
50 | $self->{expand_clause}{'insert.target'} = '_expand_insert_clause_target'; |
7958f5c6 |
51 | $self->{expand_clause}{'insert.fields'} = sub { |
52 | return +{ -row => [ |
fe8b493f |
53 | shift->_expand_maybe_list_expr($_[2], -ident) |
54 | ] } if ref($_[2]) eq 'ARRAY'; |
55 | return $_[2]; # should maybe still expand somewhat? |
7958f5c6 |
56 | }; |
f33d93b5 |
57 | $self->{expand_clause}{'insert.values'} = '_expand_insert_clause_values'; |
39544e0e |
58 | $self->{expand_clause}{'insert.returning'} = sub { |
59 | shift->_expand_maybe_list_expr(@_, -ident); |
60 | }; |
2b057b28 |
61 | $self->{render_clause}{'insert.fields'} = sub { |
fe8b493f |
62 | return $_[0]->render_aqt($_[2]); |
2b057b28 |
63 | }; |
46158aa8 |
64 | $self->{render_clause}{'insert.target'} = sub { |
fe8b493f |
65 | my ($self, undef, $from) = @_; |
46158aa8 |
66 | my ($sql, @bind) = $self->render_aqt($from); |
67 | ($self->_sqlcase('insert into ').$sql, @bind); |
68 | }; |
93253a11 |
69 | $self->{render_clause}{'insert.from'} = sub { |
fe8b493f |
70 | return $_[0]->render_aqt($_[2], 1); |
f8d50921 |
71 | }; |
01222ad2 |
72 | $self->{expand}{values} = '_expand_values'; |
73 | $self->{render}{values} = '_render_values'; |
7250aa13 |
74 | $self->{expand}{exists} = sub { |
75 | $_[0]->_expand_op(undef, [ exists => $_[2] ]); |
76 | }; |
bbe638af |
77 | return $self; |
78 | } |
79 | |
df0f5af9 |
80 | sub _expand_select_clause_select { |
fe8b493f |
81 | my ($self, undef, $select) = @_; |
df0f5af9 |
82 | +(select => $self->_expand_maybe_list_expr($select, -ident)); |
83 | } |
84 | |
85 | sub _expand_select_clause_from { |
fe8b493f |
86 | my ($self, undef, $from) = @_; |
df0f5af9 |
87 | +(from => $self->_expand_maybe_list_expr($from, -ident)); |
88 | } |
89 | |
90 | sub _expand_select_clause_where { |
fe8b493f |
91 | my ($self, undef, $where) = @_; |
df0f5af9 |
92 | +(where => $self->expand_expr($where)); |
93 | } |
94 | |
95 | sub _expand_select_clause_order_by { |
fe8b493f |
96 | my ($self, undef, $order_by) = @_; |
df0f5af9 |
97 | +(order_by => $self->_expand_order_by($order_by)); |
98 | } |
99 | |
46158aa8 |
100 | sub _expand_update_clause_target { |
fe8b493f |
101 | my ($self, undef, $target) = @_; |
e0eb8d26 |
102 | +(target => $self->_expand_maybe_list_expr($target, -ident)); |
889fdd38 |
103 | } |
104 | |
105 | sub _expand_update_clause_set { |
fe8b493f |
106 | return $_[2] if ref($_[2]) eq 'HASH' and ($_[2]->{-op}||[''])->[0] eq ','; |
107 | +(set => $_[0]->_expand_update_set_values($_[1], $_[2])); |
889fdd38 |
108 | } |
109 | |
110 | sub _expand_update_clause_where { |
fe8b493f |
111 | +(where => $_[0]->expand_expr($_[2])); |
889fdd38 |
112 | } |
113 | |
114 | sub _expand_update_clause_returning { |
fe8b493f |
115 | +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident)); |
889fdd38 |
116 | } |
117 | |
46158aa8 |
118 | sub _expand_delete_clause_target { |
fe8b493f |
119 | +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident)); |
44296b4e |
120 | } |
121 | |
fe8b493f |
122 | sub _expand_delete_clause_where { +(where => $_[0]->expand_expr($_[2])); } |
44296b4e |
123 | |
124 | sub _expand_delete_clause_returning { |
fe8b493f |
125 | +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident)); |
44296b4e |
126 | } |
127 | |
bbe638af |
128 | sub _expand_statement { |
129 | my ($self, $type, $args) = @_; |
130 | my $ec = $self->{expand_clause}; |
f9f1fdcd |
131 | if ($args->{_}) { |
132 | $args = { %$args }; |
133 | $args->{$type} = delete $args->{_} |
134 | } |
27d61b67 |
135 | return +{ "-${type}" => +{ |
c79c67d7 |
136 | map { |
bbe638af |
137 | my $val = $args->{$_}; |
138 | if (defined($val) and my $exp = $ec->{"${type}.$_"}) { |
fe8b493f |
139 | if ((my (@exp) = $self->$exp($_ => $val)) == 1) { |
c79c67d7 |
140 | ($_ => $exp[0]) |
141 | } else { |
142 | @exp |
143 | } |
bbe638af |
144 | } else { |
93253a11 |
145 | ($_ => $self->expand_expr($val)) |
bbe638af |
146 | } |
c79c67d7 |
147 | } sort keys %$args |
27d61b67 |
148 | } }; |
bbe638af |
149 | } |
150 | |
151 | sub _render_statement { |
152 | my ($self, $type, $args) = @_; |
153 | my @parts; |
154 | foreach my $clause (@{$self->{clauses_of}{$type}}) { |
155 | next unless my $clause_expr = $args->{$clause}; |
81b270e7 |
156 | local $self->{convert_where} = $self->{convert} if $clause eq 'where'; |
2b057b28 |
157 | my ($sql) = my @part = do { |
158 | if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) { |
fe8b493f |
159 | $self->$rdr($clause, $clause_expr); |
2b057b28 |
160 | } else { |
01222ad2 |
161 | my ($clause_sql, @bind) = $self->render_aqt($clause_expr, 1); |
2b057b28 |
162 | my $sql = join ' ', |
163 | $self->_sqlcase(join ' ', split '_', $clause), |
164 | $clause_sql; |
165 | ($sql, @bind); |
166 | } |
167 | }; |
bbe638af |
168 | next unless defined($sql) and length($sql); |
2b057b28 |
169 | push @parts, \@part; |
bbe638af |
170 | } |
e5dc19f6 |
171 | my ($sql, @bind) = $self->join_clauses(' ', @parts); |
01222ad2 |
172 | return ( |
173 | (our $Render_Top_Level ? $sql : '('.$sql.')'), |
174 | @bind |
175 | ); |
176 | } |
177 | |
178 | sub render_aqt { |
179 | my ($self, $aqt, $top_level) = @_; |
180 | local our $Render_Top_Level = $top_level; |
181 | return $self->next::method($aqt); |
182 | } |
183 | |
184 | sub render_statement { |
185 | my ($self, $expr, $default_scalar_to) = @_; |
186 | my ($sql, @bind) = $self->render_aqt( |
187 | $self->expand_expr($expr, $default_scalar_to), 1 |
188 | ); |
189 | return (wantarray ? ($sql, @bind) : $sql); |
bbe638af |
190 | } |
191 | |
81b270e7 |
192 | sub select { |
193 | my ($self, @args) = @_; |
7958f5c6 |
194 | |
01222ad2 |
195 | return $self->render_statement({ -select => $_[1] }) if ref($_[1]) eq 'HASH'; |
7958f5c6 |
196 | |
81b270e7 |
197 | my %clauses; |
198 | @clauses{qw(from select where order_by)} = @args; |
8e6988ce |
199 | |
81b270e7 |
200 | # This oddity is to literalify since historically SQLA doesn't quote |
8e6988ce |
201 | # a single identifier argument, so we convert it into a literal |
202 | |
4ee74413 |
203 | $clauses{select} = { -literal => [ $clauses{select}||'*' ] } |
204 | unless ref($clauses{select}); |
205 | |
01222ad2 |
206 | return $self->render_statement({ -select => \%clauses }); |
81b270e7 |
207 | } |
208 | |
1bcd361f |
209 | sub update { |
210 | my ($self, $table, $set, $where, $options) = @_; |
7958f5c6 |
211 | |
01222ad2 |
212 | return $self->render_statement({ -update => $_[1] }) if ref($_[1]) eq 'HASH'; |
7958f5c6 |
213 | |
1bcd361f |
214 | my %clauses; |
46158aa8 |
215 | @clauses{qw(target set where)} = ($table, $set, $where); |
1bcd361f |
216 | puke "Unsupported data type specified to \$sql->update" |
217 | unless ref($clauses{set}) eq 'HASH'; |
218 | @clauses{keys %$options} = values %$options; |
01222ad2 |
219 | return $self->render_statement({ -update => \%clauses }); |
1bcd361f |
220 | } |
221 | |
77e8c03d |
222 | sub delete { |
223 | my ($self, $table, $where, $options) = @_; |
7958f5c6 |
224 | |
01222ad2 |
225 | return $self->render_statement({ -delete => $_[1] }) if ref($_[1]) eq 'HASH'; |
7958f5c6 |
226 | |
46158aa8 |
227 | my %clauses = (target => $table, where => $where, %{$options||{}}); |
01222ad2 |
228 | return $self->render_statement({ -delete => \%clauses }); |
77e8c03d |
229 | } |
230 | |
39544e0e |
231 | sub insert { |
232 | my ($self, $table, $data, $options) = @_; |
7958f5c6 |
233 | |
01222ad2 |
234 | return $self->render_statement({ -insert => $_[1] }) if ref($_[1]) eq 'HASH'; |
7958f5c6 |
235 | |
46158aa8 |
236 | my %clauses = (target => $table, values => $data, %{$options||{}}); |
01222ad2 |
237 | return $self->render_statement({ -insert => \%clauses }); |
39544e0e |
238 | } |
239 | |
46158aa8 |
240 | sub _expand_insert_clause_target { |
fe8b493f |
241 | +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident)); |
46158aa8 |
242 | } |
243 | |
f33d93b5 |
244 | sub _expand_insert_clause_values { |
fe8b493f |
245 | my ($self, undef, $data) = @_; |
f8d50921 |
246 | if (ref($data) eq 'HASH' and (keys(%$data))[0] =~ /^-/) { |
247 | return $self->expand_expr($data); |
248 | } |
e5feec9f |
249 | return $data if ref($data) eq 'HASH' and $data->{-row}; |
f33d93b5 |
250 | my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data); |
93253a11 |
251 | return (from => { -values => $v_aqt }, ($f_aqt ? (fields => $f_aqt) : ())); |
f33d93b5 |
252 | } |
253 | |
01222ad2 |
254 | sub _expand_values { |
255 | my ($self, undef, $values) = @_; |
256 | return { -values => [ |
257 | map +( |
258 | ref($_) eq 'HASH' |
259 | ? $self->expand_expr($_) |
260 | : +{ -row => [ map $self->expand_expr($_), @$_ ] } |
261 | ), ref($values) eq 'ARRAY' ? @$values : $values |
262 | ] }; |
263 | } |
264 | |
265 | sub _render_values { |
a01911a2 |
266 | my ($self, undef, $values) = @_; |
e5dc19f6 |
267 | my ($v_sql, @bind) = $self->join_clauses( |
01222ad2 |
268 | ', ', |
269 | map [ $self->render_aqt($_) ], |
270 | ref($values) eq 'ARRAY' ? @$values : $values |
271 | ); |
272 | my $sql = $self->_sqlcase('values').' '.$v_sql; |
273 | return ( |
274 | (our $Render_Top_Level ? $sql : '('.$sql.')'), |
275 | @bind |
276 | ); |
277 | } |
278 | |
34570093 |
279 | sub _ext_rw { |
280 | my ($self, $name, $key, $value) = @_; |
2b0b3d43 |
281 | return $self->{$name}{$key} unless @_ > 3; |
34570093 |
282 | $self->{$name}{$key} = $value; |
283 | return $self; |
284 | } |
285 | |
d390df44 |
286 | BEGIN { |
287 | foreach my $type (qw( |
2b0b3d43 |
288 | expand op_expand render op_render clause_expand clause_render |
d390df44 |
289 | )) { |
3f9899e5 |
290 | my $name = join '_', reverse split '_', $type; |
58ebc7fa |
291 | my $singular = "${type}er"; |
3f9899e5 |
292 | eval qq{sub ${singular} { shift->_ext_rw($name => \@_) }; 1 } |
293 | or die "Method builder failed for ${singular}: $@"; |
294 | eval qq{sub wrap_${singular} { |
295 | my (\$self, \$key, \$builder) = \@_; |
296 | my \$orig = \$self->_ext_rw('${name}', \$key); |
297 | \$self->_ext_rw( |
298 | '${name}', \$key, |
299 | \$builder->(\$orig, '${name}', \$key) |
300 | ); |
301 | }; 1 } or die "Method builder failed for wrap_${singular}: $@"; |
58ebc7fa |
302 | eval qq{sub ${singular}s { |
303 | my (\$self, \@args) = \@_; |
304 | while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) { |
3f9899e5 |
305 | \$self->{${name}}{\$this_key} = \$this_value; |
58ebc7fa |
306 | } |
307 | return \$self; |
308 | }; 1 } or die "Method builder failed for ${singular}s: $@"; |
3f9899e5 |
309 | eval qq{sub ${singular}_list { sort keys %{\$_[0]->{\$name}} }; 1; } |
310 | or die "Method builder failed for ${singular}_list: $@"; |
d390df44 |
311 | } |
312 | } |
34570093 |
313 | |
314 | sub clauses_of { |
315 | my ($self, $of, @clauses) = @_; |
316 | unless (@clauses) { |
317 | return @{$self->{clauses_of}{$of}||[]}; |
318 | } |
ee706e89 |
319 | if (ref($clauses[0]) eq 'CODE') { |
320 | @clauses = $self->${\($clauses[0])}(@{$self->{clauses_of}{$of}||[]}); |
321 | } |
34570093 |
322 | $self->{clauses_of}{$of} = \@clauses; |
323 | return $self; |
324 | } |
325 | |
326 | sub clone { |
327 | my ($self) = @_; |
328 | bless( |
329 | { |
330 | (map +($_ => ( |
331 | ref($self->{$_}) eq 'HASH' |
332 | ? { %{$self->{$_}} } |
333 | : $self->{$_} |
334 | )), keys %$self), |
335 | }, |
336 | ref($self) |
337 | ); |
338 | } |
339 | |
bbe638af |
340 | 1; |