Commit | Line | Data |
a82e41dc |
1 | package SQL::Abstract::Converter; |
2 | |
3 | use Carp (); |
4 | use List::Util (); |
5 | use Scalar::Util (); |
4caa4620 |
6 | use Data::Query::ExprHelpers; |
a82e41dc |
7 | use Moo; |
8b9b83ae |
8 | use namespace::clean; |
a82e41dc |
9 | |
10 | has renderer_will_quote => ( |
11 | is => 'ro' |
12 | ); |
13 | |
14 | has lower_case => ( |
4caa4620 |
15 | is => 'ro' |
a82e41dc |
16 | ); |
17 | |
18 | has default_logic => ( |
19 | is => 'ro', coerce => sub { uc($_[0]) }, default => sub { 'OR' } |
20 | ); |
21 | |
22 | has bind_meta => ( |
23 | is => 'ro', default => sub { 1 } |
24 | ); |
25 | |
26 | has cmp => (is => 'ro', default => sub { '=' }); |
27 | |
28 | has sqltrue => (is => 'ro', default => sub { '1=1' }); |
29 | has sqlfalse => (is => 'ro', default => sub { '0=1' }); |
30 | |
31 | has special_ops => (is => 'ro', default => sub { [] }); |
32 | |
33 | # XXX documented but I don't current fail any tests not using it |
34 | has unary_ops => (is => 'ro', default => sub { [] }); |
35 | |
36 | has injection_guard => ( |
37 | is => 'ro', |
38 | default => sub { |
39 | qr/ |
40 | \; |
41 | | |
42 | ^ \s* go \s |
43 | /xmi; |
44 | } |
45 | ); |
46 | |
47 | has identifier_sep => ( |
48 | is => 'ro', default => sub { '.' }, |
49 | ); |
50 | |
51 | has always_quote => (is => 'ro', default => sub { 1 }); |
52 | |
53 | has convert => (is => 'ro'); |
54 | |
55 | has array_datatypes => (is => 'ro'); |
56 | |
2e50f418 |
57 | has equality_op => ( |
58 | is => 'ro', |
59 | default => sub { qr/^ (?: = ) $/ix }, |
60 | ); |
61 | |
62 | has inequality_op => ( |
63 | is => 'ro', |
64 | default => sub { qr/^ (?: != | <> ) $/ix }, |
65 | ); |
66 | |
67 | has like_op => ( |
68 | is => 'ro', |
69 | default => sub { qr/^ (?: is \s+ )? r?like $/xi }, |
70 | ); |
71 | |
72 | has not_like_op => ( |
73 | is => 'ro', |
74 | default => sub { qr/^ (?: is \s+ )? not \s+ r?like $/xi }, |
75 | ); |
76 | |
77 | |
a82e41dc |
78 | sub _literal_to_dq { |
79 | my ($self, $literal) = @_; |
80 | my @bind; |
81 | ($literal, @bind) = @$literal if ref($literal) eq 'ARRAY'; |
3ed3c560 |
82 | Literal('SQL', $literal, [ $self->_bind_to_dq(@bind) ]); |
a82e41dc |
83 | } |
84 | |
85 | sub _bind_to_dq { |
86 | my ($self, @bind) = @_; |
87 | return unless @bind; |
88 | $self->bind_meta |
89 | ? do { |
90 | $self->_assert_bindval_matches_bindtype(@bind); |
91 | map perl_scalar_value(reverse @$_), @bind |
92 | } |
93 | : map perl_scalar_value($_), @bind |
94 | } |
95 | |
96 | sub _value_to_dq { |
97 | my ($self, $value) = @_; |
98 | $self->_maybe_convert_dq(perl_scalar_value($value, our $Cur_Col_Meta)); |
99 | } |
100 | |
101 | sub _ident_to_dq { |
102 | my ($self, $ident) = @_; |
103 | $self->_assert_pass_injection_guard($ident) |
104 | unless $self->renderer_will_quote; |
95516ac5 |
105 | $self->_maybe_convert_dq( |
106 | Identifier(do { |
107 | if (my $sep = $self->identifier_sep) { |
108 | split /\Q$sep/, $ident |
109 | } else { |
110 | $ident |
111 | } |
112 | }) |
113 | ); |
a82e41dc |
114 | } |
115 | |
116 | sub _maybe_convert_dq { |
117 | my ($self, $dq) = @_; |
118 | if (my $c = $self->{where_convert}) { |
4caa4620 |
119 | Operator({ 'SQL.Naive' => 'apply' }, [ |
f3c68822 |
120 | Identifier($self->_sqlcase($c)), |
4caa4620 |
121 | $dq |
122 | ] |
123 | ); |
a82e41dc |
124 | } else { |
125 | $dq; |
126 | } |
127 | } |
128 | |
129 | sub _op_to_dq { |
130 | my ($self, $op, @args) = @_; |
131 | $self->_assert_pass_injection_guard($op); |
4caa4620 |
132 | Operator({ 'SQL.Naive' => $op }, \@args); |
a82e41dc |
133 | } |
134 | |
135 | sub _assert_pass_injection_guard { |
136 | if ($_[1] =~ $_[0]->{injection_guard}) { |
137 | my $class = ref $_[0]; |
138 | die "Possible SQL injection attempt '$_[1]'. If this is indeed a part of the " |
139 | . "desired SQL use literal SQL ( \'...' or \[ '...' ] ) or supply your own " |
140 | . "{injection_guard} attribute to ${class}->new()" |
141 | } |
142 | } |
143 | |
144 | sub _insert_to_dq { |
145 | my ($self, $table, $data, $options) = @_; |
146 | my (@names, @values); |
147 | if (ref($data) eq 'HASH') { |
148 | @names = sort keys %$data; |
149 | foreach my $k (@names) { |
150 | local our $Cur_Col_Meta = $k; |
151 | push @values, $self->_mutation_rhs_to_dq($data->{$k}); |
152 | } |
153 | } elsif (ref($data) eq 'ARRAY') { |
154 | local our $Cur_Col_Meta; |
155 | @values = map $self->_mutation_rhs_to_dq($_), @$data; |
156 | } else { |
157 | die "Not handled yet"; |
158 | } |
159 | my $returning; |
160 | if (my $r_source = $options->{returning}) { |
161 | $returning = [ |
162 | map +(ref($_) ? $self->_expr_to_dq($_) : $self->_ident_to_dq($_)), |
163 | (ref($r_source) eq 'ARRAY' ? @$r_source : $r_source), |
164 | ]; |
165 | } |
4caa4620 |
166 | Insert( |
167 | (@names ? ([ map $self->_ident_to_dq($_), @names ]) : undef), |
168 | [ \@values ], |
169 | $self->_table_to_dq($table), |
170 | ($returning ? ($returning) : undef), |
171 | ); |
a82e41dc |
172 | } |
173 | |
174 | sub _mutation_rhs_to_dq { |
175 | my ($self, $v) = @_; |
176 | if (ref($v) eq 'ARRAY') { |
177 | if ($self->{array_datatypes}) { |
178 | return $self->_value_to_dq($v); |
179 | } |
180 | $v = \do { my $x = $v }; |
181 | } |
182 | if (ref($v) eq 'HASH') { |
183 | my ($op, $arg, @rest) = %$v; |
184 | |
185 | die 'Operator calls in update/insert must be in the form { -op => $arg }' |
5245699d |
186 | if (@rest or not $op =~ /^\-/); |
a82e41dc |
187 | } |
188 | return $self->_expr_to_dq($v); |
189 | } |
190 | |
191 | sub _update_to_dq { |
192 | my ($self, $table, $data, $where) = @_; |
193 | |
194 | die "Unsupported data type specified to \$sql->update" |
195 | unless ref $data eq 'HASH'; |
196 | |
197 | my @set; |
198 | |
199 | foreach my $k (sort keys %$data) { |
200 | my $v = $data->{$k}; |
201 | local our $Cur_Col_Meta = $k; |
202 | push @set, [ $self->_ident_to_dq($k), $self->_mutation_rhs_to_dq($v) ]; |
203 | } |
204 | |
4caa4620 |
205 | Update( |
206 | \@set, |
207 | $self->_where_to_dq($where), |
208 | $self->_table_to_dq($table), |
209 | ); |
a82e41dc |
210 | } |
211 | |
212 | sub _source_to_dq { |
213 | my ($self, $table, undef, $where) = @_; |
214 | |
215 | my $source_dq = $self->_table_to_dq($table); |
216 | |
217 | if (my $where_dq = $self->_where_to_dq($where)) { |
4caa4620 |
218 | $source_dq = Where($where_dq, $source_dq); |
a82e41dc |
219 | } |
220 | |
221 | $source_dq; |
222 | } |
223 | |
224 | sub _select_to_dq { |
225 | my $self = shift; |
226 | my ($table, $fields, $where, $order) = @_; |
227 | |
228 | my $source_dq = $self->_source_to_dq(@_); |
229 | |
230 | my $ordered_dq = do { |
231 | if ($order) { |
36e3ea6c |
232 | $self->_order_by_to_dq($order, undef, undef, $source_dq); |
a82e41dc |
233 | } else { |
234 | $source_dq |
235 | } |
236 | }; |
237 | |
87af4204 |
238 | return $self->_select_select_to_dq($fields, $ordered_dq); |
a82e41dc |
239 | } |
240 | |
87af4204 |
241 | sub _select_select_to_dq { |
a82e41dc |
242 | my ($self, $fields, $from_dq) = @_; |
243 | |
244 | $fields ||= '*'; |
245 | |
4caa4620 |
246 | Select( |
247 | $self->_select_field_list_to_dq($fields), |
248 | $from_dq, |
249 | ); |
a82e41dc |
250 | } |
251 | |
252 | sub _select_field_list_to_dq { |
253 | my ($self, $fields) = @_; |
87af4204 |
254 | [ map $self->_select_field_to_dq($_), |
255 | ref($fields) eq 'ARRAY' ? @$fields : $fields ]; |
a82e41dc |
256 | } |
257 | |
258 | sub _select_field_to_dq { |
259 | my ($self, $field) = @_; |
87af4204 |
260 | if (my $ref = ref($field)) { |
261 | if ($ref eq 'REF' and ref($$field) eq 'HASH') { |
262 | return $$field; |
263 | } else { |
264 | return $self->_literal_to_dq($$field); |
265 | } |
266 | } |
267 | return $self->_ident_to_dq($field) |
a82e41dc |
268 | } |
269 | |
270 | sub _delete_to_dq { |
271 | my ($self, $table, $where) = @_; |
4caa4620 |
272 | Delete( |
273 | $self->_where_to_dq($where), |
274 | $self->_table_to_dq($table), |
275 | ); |
a82e41dc |
276 | } |
277 | |
278 | sub _where_to_dq { |
279 | my ($self, $where, $logic) = @_; |
280 | |
281 | return undef unless defined($where); |
282 | |
e177c256 |
283 | # if we're given a simple string assume it's a literal |
284 | return $self->_literal_to_dq($where) if !ref($where); |
285 | |
a82e41dc |
286 | # turn the convert misfeature on - only used in WHERE clauses |
287 | local $self->{where_convert} = $self->convert; |
288 | |
289 | return $self->_expr_to_dq($where, $logic); |
290 | } |
291 | |
6da91977 |
292 | my %op_conversions = ( |
293 | '==' => '=', |
294 | 'eq' => '=', |
295 | 'ne' => '!=', |
296 | '!' => 'NOT', |
297 | 'gt' => '>', |
298 | 'ge' => '>=', |
299 | 'lt' => '<', |
300 | 'le' => '<=', |
301 | 'defined' => 'IS NOT NULL', |
302 | ); |
303 | |
a82e41dc |
304 | sub _expr_to_dq { |
305 | my ($self, $where, $logic) = @_; |
306 | |
307 | if (ref($where) eq 'ARRAY') { |
308 | return $self->_expr_to_dq_ARRAYREF($where, $logic); |
309 | } elsif (ref($where) eq 'HASH') { |
310 | return $self->_expr_to_dq_HASHREF($where, $logic); |
311 | } elsif ( |
312 | ref($where) eq 'SCALAR' |
313 | or (ref($where) eq 'REF' and ref($$where) eq 'ARRAY') |
314 | ) { |
315 | return $self->_literal_to_dq($$where); |
62d17764 |
316 | } elsif (ref($where) eq 'REF' and ref($$where) eq 'HASH') { |
6da91977 |
317 | return map_dq_tree { |
318 | if ( |
319 | is_Operator |
320 | and not $_->{operator}{'SQL.Naive'} |
321 | and my $op = $_->{operator}{'Perl'} |
322 | ) { |
323 | my $sql_op = $op_conversions{$op} || uc($op); |
324 | return +{ |
325 | %{$_}, |
326 | operator => { 'SQL.Naive' => $sql_op } |
327 | }; |
328 | } |
329 | return $_; |
330 | } $$where; |
a82e41dc |
331 | } elsif (!ref($where) or Scalar::Util::blessed($where)) { |
332 | return $self->_value_to_dq($where); |
333 | } |
334 | die "Can't handle $where"; |
335 | } |
336 | |
337 | sub _expr_to_dq_ARRAYREF { |
338 | my ($self, $where, $logic) = @_; |
339 | |
340 | $logic = uc($logic || $self->default_logic || 'OR'); |
341 | $logic eq 'AND' or $logic eq 'OR' or die "unknown logic: $logic"; |
342 | |
343 | return unless @$where; |
344 | |
345 | my ($first, @rest) = @$where; |
346 | |
347 | return $self->_expr_to_dq($first) unless @rest; |
348 | |
349 | my $first_dq = do { |
350 | if (!ref($first)) { |
351 | $self->_where_hashpair_to_dq($first => shift(@rest)); |
352 | } else { |
353 | $self->_expr_to_dq($first); |
354 | } |
355 | }; |
356 | |
357 | return $self->_expr_to_dq_ARRAYREF(\@rest, $logic) unless $first_dq; |
358 | |
359 | $self->_op_to_dq( |
360 | $logic, $first_dq, $self->_expr_to_dq_ARRAYREF(\@rest, $logic) |
361 | ); |
362 | } |
363 | |
364 | sub _expr_to_dq_HASHREF { |
365 | my ($self, $where, $logic) = @_; |
366 | |
367 | $logic = uc($logic) if $logic; |
368 | |
369 | my @dq = map { |
370 | $self->_where_hashpair_to_dq($_ => $where->{$_}, $logic) |
371 | } sort keys %$where; |
372 | |
373 | return $dq[0] unless @dq > 1; |
374 | |
375 | my $final = pop(@dq); |
376 | |
377 | foreach my $dq (reverse @dq) { |
378 | $final = $self->_op_to_dq($logic||'AND', $dq, $final); |
379 | } |
380 | |
381 | return $final; |
382 | } |
383 | |
384 | sub _where_to_dq_SCALAR { |
385 | shift->_value_to_dq(@_); |
386 | } |
387 | |
388 | sub _apply_to_dq { |
389 | my ($self, $op, $v) = @_; |
390 | my @args = map $self->_expr_to_dq($_), (ref($v) eq 'ARRAY' ? @$v : $v); |
391 | |
392 | # Ok. Welcome to stupid compat code land. An SQLA expr that would in the |
393 | # absence of this piece of crazy render to: |
394 | # |
395 | # A( B( C( x ) ) ) |
396 | # |
397 | # such as |
398 | # |
399 | # { -a => { -b => { -c => $x } } } |
400 | # |
401 | # actually needs to render to: |
402 | # |
403 | # A( B( C x ) ) |
404 | # |
405 | # because SQL sucks, and databases are hateful, and SQLA is Just That DWIM. |
406 | # |
407 | # However, we don't want to catch 'A(x)' and turn it into 'A x' |
408 | # |
409 | # So the way we deal with this is to go through all our arguments, and |
410 | # then if the argument is -also- an apply, i.e. at least 'B', we check |
411 | # its arguments - and if there's only one of them, and that isn't an apply, |
412 | # then we convert to the bareword form. The end result should be: |
413 | # |
414 | # A( x ) -> A( x ) |
415 | # A( B( x ) ) -> A( B x ) |
416 | # A( B( C( x ) ) ) -> A( B( C x ) ) |
417 | # A( B( x + y ) ) -> A( B( x + y ) ) |
418 | # A( B( x, y ) ) -> A( B( x, y ) ) |
419 | # |
420 | # If this turns out not to be quite right, please add additional tests |
421 | # to either 01generate.t or 02where.t *and* update this comment. |
422 | |
423 | foreach my $arg (@args) { |
424 | if ( |
f3c68822 |
425 | is_Operator($arg) and $arg->{operator}{'SQL.Naive'} eq 'apply' |
426 | and @{$arg->{args}} == 2 and !is_Operator($arg->{args}[1]) |
427 | |
a82e41dc |
428 | ) { |
429 | $arg->{operator}{'SQL.Naive'} = (shift @{$arg->{args}})->{elements}->[0]; |
430 | } |
431 | } |
432 | $self->_assert_pass_injection_guard($op); |
433 | return $self->_op_to_dq( |
434 | apply => $self->_ident_to_dq($op), @args |
435 | ); |
436 | } |
437 | |
438 | sub _where_hashpair_to_dq { |
439 | my ($self, $k, $v, $logic) = @_; |
440 | |
441 | if ($k =~ /^-(.*)/s) { |
442 | my $op = uc($1); |
443 | if ($op eq 'AND' or $op eq 'OR') { |
444 | return $self->_expr_to_dq($v, $op); |
445 | } elsif ($op eq 'NEST') { |
446 | return $self->_expr_to_dq($v); |
447 | } elsif ($op eq 'NOT') { |
448 | return $self->_op_to_dq(NOT => $self->_expr_to_dq($v)); |
449 | } elsif ($op eq 'BOOL') { |
450 | return ref($v) ? $self->_expr_to_dq($v) : $self->_ident_to_dq($v); |
451 | } elsif ($op eq 'NOT_BOOL') { |
452 | return $self->_op_to_dq( |
453 | NOT => ref($v) ? $self->_expr_to_dq($v) : $self->_ident_to_dq($v) |
454 | ); |
455 | } elsif ($op eq 'IDENT') { |
456 | return $self->_ident_to_dq($v); |
457 | } elsif ($op eq 'VALUE') { |
458 | return $self->_value_to_dq($v); |
459 | } elsif ($op =~ /^(?:AND|OR|NEST)_?\d+/) { |
460 | die "Use of [and|or|nest]_N modifiers is no longer supported"; |
461 | } else { |
462 | return $self->_apply_to_dq($op, $v); |
463 | } |
464 | } else { |
465 | local our $Cur_Col_Meta = $k; |
466 | if (ref($v) eq 'ARRAY') { |
467 | if (!@$v) { |
468 | return $self->_literal_to_dq($self->{sqlfalse}); |
469 | } elsif (defined($v->[0]) && $v->[0] =~ /-(and|or)/i) { |
470 | return $self->_expr_to_dq_ARRAYREF([ |
471 | map +{ $k => $_ }, @{$v}[1..$#$v] |
472 | ], uc($1)); |
473 | } |
474 | return $self->_expr_to_dq_ARRAYREF([ |
475 | map +{ $k => $_ }, @$v |
476 | ], $logic); |
477 | } elsif (ref($v) eq 'SCALAR' or (ref($v) eq 'REF' and ref($$v) eq 'ARRAY')) { |
3ed3c560 |
478 | return Literal('SQL', [ $self->_ident_to_dq($k), $self->_literal_to_dq($$v) ]); |
a82e41dc |
479 | } |
480 | my ($op, $rhs) = do { |
481 | if (ref($v) eq 'HASH') { |
482 | if (keys %$v > 1) { |
483 | return $self->_expr_to_dq_ARRAYREF([ |
484 | map +{ $k => { $_ => $v->{$_} } }, sort keys %$v |
485 | ], $logic||'AND'); |
486 | } |
487 | my ($op, $value) = %$v; |
488 | s/^-//, s/_/ /g for $op; |
5245699d |
489 | if ($op =~ /^(?:and|or)$/i) { |
a82e41dc |
490 | return $self->_expr_to_dq({ $k => $value }, $op); |
491 | } elsif ( |
492 | my $special_op = List::Util::first {$op =~ $_->{regex}} |
493 | @{$self->{special_ops}} |
494 | ) { |
495 | return $self->_literal_to_dq( |
496 | [ $special_op->{handler}->($k, $op, $value) ] |
5245699d |
497 | ); |
a82e41dc |
498 | } elsif ($op =~ /^(?:AND|OR|NEST)_?\d+$/i) { |
499 | die "Use of [and|or|nest]_N modifiers is no longer supported"; |
500 | } |
501 | (uc($op), $value); |
502 | } else { |
503 | ($self->{cmp}, $v); |
504 | } |
505 | }; |
506 | if ($op eq 'BETWEEN' or $op eq 'IN' or $op eq 'NOT IN' or $op eq 'NOT BETWEEN') { |
cf9a9cc7 |
507 | die "Argument passed to the '$op' operator can not be undefined" unless defined $rhs; |
023fd01d |
508 | $rhs = [$rhs] unless ref $rhs; |
a82e41dc |
509 | if (ref($rhs) ne 'ARRAY') { |
5245699d |
510 | if ($op =~ /^(?:NOT )?IN$/) { |
a82e41dc |
511 | # have to add parens if none present because -in => \"SELECT ..." |
512 | # got documented. mst hates everything. |
513 | if (ref($rhs) eq 'SCALAR') { |
514 | my $x = $$rhs; |
515 | 1 while ($x =~ s/\A\s*\((.*)\)\s*\Z/$1/s); |
516 | $rhs = \$x; |
43da3819 |
517 | } elsif (ref($rhs) eq 'REF') { |
518 | if (ref($$rhs) eq 'ARRAY') { |
519 | my ($x, @rest) = @{$$rhs}; |
520 | 1 while ($x =~ s/\A\s*\((.*)\)\s*\Z/$1/s); |
521 | $rhs = \[ $x, @rest ]; |
522 | } elsif (ref($$rhs) eq 'HASH') { |
523 | return $self->_op_to_dq($op, $self->_ident_to_dq($k), $$rhs); |
524 | } |
a82e41dc |
525 | } |
526 | } |
527 | return $self->_op_to_dq( |
528 | $op, $self->_ident_to_dq($k), $self->_literal_to_dq($$rhs) |
529 | ); |
530 | } |
052d09f0 |
531 | die "Operator '$op' requires either an arrayref with two defined values or expressions, or a single literal scalarref/arrayref-ref" |
532 | if $op =~ /^(?:NOT )?BETWEEN$/ and (@$rhs != 2 or grep !defined, @$rhs); |
5b670507 |
533 | if (grep !defined, @$rhs) { |
534 | my ($inop, $logic, $nullop) = $op =~ /^NOT/ |
535 | ? (-not_in => AND => { '!=' => undef }) |
536 | : (-in => OR => undef); |
39221d2b |
537 | if (my @defined = grep defined, @$rhs) { |
538 | return $self->_expr_to_dq_ARRAYREF([ |
539 | { $k => { $inop => \@defined } }, |
5b670507 |
540 | { $k => $nullop }, |
541 | ], $logic); |
39221d2b |
542 | } |
fc4b3e6d |
543 | return $self->_expr_to_dq_HASHREF({ $k => $nullop }); |
5b670507 |
544 | } |
bdf53200 |
545 | return $self->_literal_to_dq( |
546 | $op =~ /^NOT/ ? $self->{sqltrue} : $self->{sqlfalse} |
547 | ) unless @$rhs; |
a82e41dc |
548 | return $self->_op_to_dq( |
549 | $op, $self->_ident_to_dq($k), map $self->_expr_to_dq($_), @$rhs |
550 | ) |
2e50f418 |
551 | } elsif ($op =~ s/^NOT (?!R?LIKE)//) { |
a82e41dc |
552 | return $self->_where_hashpair_to_dq(-not => { $k => { $op => $rhs } }); |
553 | } elsif ($op eq 'IDENT') { |
554 | return $self->_op_to_dq( |
555 | $self->{cmp}, $self->_ident_to_dq($k), $self->_ident_to_dq($rhs) |
556 | ); |
557 | } elsif ($op eq 'VALUE') { |
558 | return $self->_op_to_dq( |
559 | $self->{cmp}, $self->_ident_to_dq($k), $self->_value_to_dq($rhs) |
560 | ); |
561 | } elsif (!defined($rhs)) { |
562 | my $null_op = do { |
2e50f418 |
563 | warn "Supplying an undefined argument to '$op' is deprecated" |
564 | if $op =~ $self->like_op or $op =~ $self->not_like_op; |
565 | if ($op =~ $self->equality_op or $op =~ $self->like_op or $op eq 'IS') { |
a82e41dc |
566 | 'IS NULL' |
c8d97b3d |
567 | } elsif ( |
568 | $op =~ $self->inequality_op or $op =~ $self->not_like_op |
569 | or |
570 | $op eq 'IS NOT' or $op eq 'NOT' |
571 | ) { |
a82e41dc |
572 | 'IS NOT NULL' |
573 | } else { |
574 | die "Can't do undef -> NULL transform for operator ${op}"; |
575 | } |
576 | }; |
577 | return $self->_op_to_dq($null_op, $self->_ident_to_dq($k)); |
578 | } |
579 | if (ref($rhs) eq 'ARRAY') { |
580 | if (!@$rhs) { |
2e50f418 |
581 | if ($op =~ $self->like_op or $op =~ $self->not_like_op) { |
582 | warn "Supplying an empty arrayref to '$op' is deprecated"; |
583 | } elsif ($op !~ $self->equality_op and $op !~ $self->inequality_op) { |
584 | die "operator '$op' applied on an empty array (field '$k')"; |
585 | } |
a82e41dc |
586 | return $self->_literal_to_dq( |
2e50f418 |
587 | ($op =~ $self->inequality_op or $op =~ $self->not_like_op) |
588 | ? $self->{sqltrue} : $self->{sqlfalse} |
a82e41dc |
589 | ); |
590 | } elsif (defined($rhs->[0]) and $rhs->[0] =~ /^-(and|or)$/i) { |
591 | return $self->_expr_to_dq_ARRAYREF([ |
592 | map +{ $k => { $op => $_ } }, @{$rhs}[1..$#$rhs] |
593 | ], uc($1)); |
594 | } elsif ($op =~ /^-(?:AND|OR|NEST)_?\d+/) { |
595 | die "Use of [and|or|nest]_N modifiers is no longer supported"; |
2e50f418 |
596 | } elsif (@$rhs > 1 and ($op =~ $self->inequality_op or $op =~ $self->not_like_op)) { |
597 | warn "A multi-element arrayref as an argument to the inequality op '$op' " |
598 | . 'is technically equivalent to an always-true 1=1 (you probably wanted ' |
599 | . "to say ...{ \$inequality_op => [ -and => \@values ] }... instead)"; |
a82e41dc |
600 | } |
601 | return $self->_expr_to_dq_ARRAYREF([ |
602 | map +{ $k => { $op => $_ } }, @$rhs |
603 | ]); |
604 | } |
605 | return $self->_op_to_dq( |
606 | $op, $self->_ident_to_dq($k), $self->_expr_to_dq($rhs) |
607 | ); |
608 | } |
609 | } |
610 | |
611 | sub _order_by_to_dq { |
36e3ea6c |
612 | my ($self, $arg, $dir, $nulls, $from) = @_; |
a82e41dc |
613 | |
614 | return unless $arg; |
615 | |
4caa4620 |
616 | my $dq = Order( |
617 | undef, |
618 | (defined($dir) ? (!!($dir =~ /desc/i)) : undef), |
e1ba0ad9 |
619 | $nulls, |
4caa4620 |
620 | ($from ? ($from) : undef), |
621 | ); |
a82e41dc |
622 | |
623 | if (!ref($arg)) { |
624 | $dq->{by} = $self->_ident_to_dq($arg); |
625 | } elsif (ref($arg) eq 'ARRAY') { |
626 | return unless @$arg; |
627 | local our $Order_Inner unless our $Order_Recursing; |
628 | local $Order_Recursing = 1; |
629 | my ($outer, $inner); |
630 | foreach my $member (@$arg) { |
631 | local $Order_Inner; |
36e3ea6c |
632 | my $next = $self->_order_by_to_dq($member, $dir, $nulls, $from); |
a82e41dc |
633 | $outer ||= $next; |
634 | $inner->{from} = $next if $inner; |
635 | $inner = $Order_Inner || $next; |
636 | } |
637 | $Order_Inner = $inner; |
638 | return $outer; |
639 | } elsif (ref($arg) eq 'REF' and ref($$arg) eq 'ARRAY') { |
640 | $dq->{by} = $self->_literal_to_dq($$arg); |
02202b68 |
641 | } elsif (ref($arg) eq 'REF' and ref($$arg) eq 'HASH') { |
642 | $dq->{by} = $$arg; |
a82e41dc |
643 | } elsif (ref($arg) eq 'SCALAR') { |
8b9b83ae |
644 | |
f2a0d52b |
645 | # < mst> right, but if it doesn't match that, it goes "ok, right, not sure, |
8b9b83ae |
646 | # totally leaving this untouched as a literal" |
647 | # < mst> so I -think- it's relatively robust |
648 | # < ribasushi> right, it's relatively safe then |
649 | # < ribasushi> is this regex centralized? |
650 | # < mst> it only exists in _order_by_to_dq in SQL::Abstract::Converter |
f2a0d52b |
651 | # < mst> it only exists because you were kind enough to support new |
8b9b83ae |
652 | # dbihacks crack combined with old literal order_by crack |
653 | # < ribasushi> heh :) |
654 | |
c30db4b6 |
655 | # this should take into account our quote char and name sep |
656 | |
657 | my $match_ident = '\w+(?:\.\w+)*'; |
658 | |
659 | if (my ($ident, $dir) = $$arg =~ /^(${match_ident})(?:\s+(desc|asc))?$/i) { |
3d82b6c9 |
660 | $dq->{by} = $self->_ident_to_dq($ident); |
661 | $dq->{reverse} = 1 if $dir and lc($dir) eq 'desc'; |
662 | } else { |
663 | $dq->{by} = $self->_literal_to_dq($$arg); |
664 | } |
a82e41dc |
665 | } elsif (ref($arg) eq 'HASH') { |
36e3ea6c |
666 | return () unless %$arg; |
667 | |
668 | my ($direction, $val); |
669 | foreach my $key (keys %$arg) { |
670 | if ( $key =~ /^-(desc|asc)/i ) { |
671 | die "hash passed to _order_by_to_dq must have exactly one of -desc or -asc" |
672 | if defined $direction; |
673 | $direction = $1; |
674 | $val = $arg->{$key}; |
675 | } elsif ($key =~ /^-nulls$/i) { |
676 | $nulls = $arg->{$key}; |
e1ba0ad9 |
677 | die "invalid value for -nulls" unless $nulls =~ /^(?:first|last|none)$/i; |
36e3ea6c |
678 | } else { |
c5caf045 |
679 | die "invalid key ${key} in hash passed to _order_by_to_dq"; |
36e3ea6c |
680 | } |
681 | } |
a82e41dc |
682 | |
36e3ea6c |
683 | die "hash passed to _order_by_to_dq must have exactly one of -desc or -asc" |
684 | unless defined $direction; |
a82e41dc |
685 | |
36e3ea6c |
686 | return $self->_order_by_to_dq($val, $direction, $nulls, $from); |
a82e41dc |
687 | } else { |
688 | die "Can't handle $arg in _order_by_to_dq"; |
689 | } |
690 | return $dq; |
691 | } |
692 | |
693 | sub _table_to_dq { |
694 | my ($self, $from) = @_; |
695 | if (ref($from) eq 'ARRAY') { |
696 | die "Empty FROM list" unless my @f = @$from; |
697 | my $dq = $self->_table_to_dq(shift @f); |
698 | while (my $x = shift @f) { |
4caa4620 |
699 | $dq = Join( |
700 | $dq, |
701 | $self->_table_to_dq($x), |
702 | ); |
a82e41dc |
703 | } |
704 | $dq; |
705 | } elsif (ref($from) eq 'SCALAR' or (ref($from) eq 'REF')) { |
706 | $self->_literal_to_dq($$from); |
707 | } else { |
708 | $self->_ident_to_dq($from); |
709 | } |
710 | } |
711 | |
712 | # And bindtype |
713 | sub _bindtype (@) { |
714 | #my ($self, $col, @vals) = @_; |
715 | |
716 | #LDNOTE : changed original implementation below because it did not make |
717 | # sense when bindtype eq 'columns' and @vals > 1. |
718 | # return $self->{bindtype} eq 'columns' ? [ $col, @vals ] : @vals; |
719 | |
720 | # called often - tighten code |
721 | return $_[0]->bind_meta |
722 | ? map {[$_[1], $_]} @_[2 .. $#_] |
723 | : @_[2 .. $#_] |
724 | ; |
725 | } |
726 | |
727 | # Dies if any element of @bind is not in [colname => value] format |
728 | # if bindtype is 'columns'. |
729 | sub _assert_bindval_matches_bindtype { |
730 | # my ($self, @bind) = @_; |
731 | my $self = shift; |
732 | if ($self->bind_meta) { |
733 | for (@_) { |
734 | if (!defined $_ || ref($_) ne 'ARRAY' || @$_ != 2) { |
735 | die "bindtype 'columns' selected, you need to pass: [column_name => bind_value]" |
736 | } |
737 | } |
738 | } |
739 | } |
740 | |
741 | # Fix SQL case, if so requested |
742 | sub _sqlcase { |
743 | return $_[0]->lower_case ? $_[1] : uc($_[1]); |
744 | } |
745 | |
746 | 1; |