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