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d5dedbd6 |
1 | package DBIx::Class::SQLMaker; |
6f4ddea1 |
2 | |
a697fa31 |
3 | use strict; |
4 | use warnings; |
5 | |
d5dedbd6 |
6 | =head1 NAME |
7 | |
8 | DBIx::Class::SQLMaker - An SQL::Abstract-based SQL maker class |
9 | |
10 | =head1 DESCRIPTION |
11 | |
12 | This module is a subclass of L<SQL::Abstract> and includes a number of |
13 | DBIC-specific workarounds, not yet suitable for inclusion into the |
14 | L<SQL::Abstract> core. It also provides all (and more than) the functionality |
15 | of L<SQL::Abstract::Limit>, see L<DBIx::Class::SQLMaker::LimitDialects> for |
16 | more info. |
17 | |
18 | Currently the enhancements to L<SQL::Abstract> are: |
19 | |
20 | =over |
21 | |
22 | =item * Support for C<JOIN> statements (via extended C<table/from> support) |
23 | |
24 | =item * Support of functions in C<SELECT> lists |
25 | |
26 | =item * C<GROUP BY>/C<HAVING> support (via extensions to the order_by parameter) |
27 | |
28 | =item * Support of C<...FOR UPDATE> type of select statement modifiers |
29 | |
30 | =back |
31 | |
32 | =cut |
6a247f33 |
33 | |
34 | use base qw/ |
d5dedbd6 |
35 | DBIx::Class::SQLMaker::LimitDialects |
6a247f33 |
36 | SQL::Abstract |
70c28808 |
37 | DBIx::Class |
6a247f33 |
38 | /; |
39 | use mro 'c3'; |
a697fa31 |
40 | |
6298a324 |
41 | use Sub::Name 'subname'; |
70c28808 |
42 | use DBIx::Class::Carp; |
e8fc51c7 |
43 | use namespace::clean; |
b2b22cd6 |
44 | |
6a247f33 |
45 | __PACKAGE__->mk_group_accessors (simple => qw/quote_char name_sep limit_dialect/); |
46 | |
111364b3 |
47 | sub _quoting_enabled { |
48 | ( defined $_[0]->{quote_char} and length $_[0]->{quote_char} ) ? 1 : 0 |
49 | } |
50 | |
3f5b99fe |
51 | # for when I need a normalized l/r pair |
52 | sub _quote_chars { |
111364b3 |
53 | |
54 | # in case we are called in the old !!$sm->_quote_chars fashion |
55 | return () if !wantarray and ( ! defined $_[0]->{quote_char} or ! length $_[0]->{quote_char} ); |
56 | |
3f5b99fe |
57 | map |
58 | { defined $_ ? $_ : '' } |
59 | ( ref $_[0]->{quote_char} ? (@{$_[0]->{quote_char}}) : ( ($_[0]->{quote_char}) x 2 ) ) |
60 | ; |
61 | } |
62 | |
cb913aa5 |
63 | sub _escape_char { |
64 | $_[0]->{escape_char} || ($_[0]->_quote_chars)[1] || ''; |
65 | } |
66 | |
67 | sub _unquote { |
68 | my ($self, $value) = @_; |
69 | |
70 | return $value unless defined $value; |
71 | |
72 | my ($l, $r, $e) = map { quotemeta $_ } $self->_quote_chars, $self->_escape_char; |
73 | |
74 | # no quoting, all bets are off |
75 | return $value unless length $e; |
76 | |
77 | my $re = $self->_quoted_ident_re($l, $r, $e); |
78 | |
79 | if ($value =~ /\A$re\z/) { |
80 | $value =~ s/\A$l//; |
81 | $value =~ s/$r\z//; |
82 | $value =~ s/( $e [$e$r] )/substr($1, 1)/gex; |
83 | return $value; |
84 | } |
85 | else { |
86 | # not a quoted value, assume it's an identifier |
87 | return $value; |
88 | } |
89 | } |
90 | |
91 | sub _quoted_ident_re { |
92 | my $self = shift; |
93 | my ($l, $r, $e) = @_ ? @_ : map { quotemeta $_ } $self->_quote_chars, $self->_escape_char; |
94 | return qr/ $l (?: [^$e$r] | $e [$e$r] )+ $r /x; |
95 | } |
96 | |
70c28808 |
97 | # FIXME when we bring in the storage weaklink, check its schema |
98 | # weaklink and channel through $schema->throw_exception |
99 | sub throw_exception { DBIx::Class::Exception->throw($_[1]) } |
100 | |
b2b22cd6 |
101 | BEGIN { |
2ea6032a |
102 | # reinstall the belch()/puke() functions of SQL::Abstract with custom versions |
70c28808 |
103 | # that use DBIx::Class::Carp/DBIx::Class::Exception instead of plain Carp |
b2b22cd6 |
104 | no warnings qw/redefine/; |
2ea6032a |
105 | |
106 | *SQL::Abstract::belch = subname 'SQL::Abstract::belch' => sub (@) { |
107 | my($func) = (caller(1))[3]; |
108 | carp "[$func] Warning: ", @_; |
109 | }; |
110 | |
111 | *SQL::Abstract::puke = subname 'SQL::Abstract::puke' => sub (@) { |
112 | my($func) = (caller(1))[3]; |
70c28808 |
113 | __PACKAGE__->throw_exception("[$func] Fatal: " . join ('', @_)); |
2ea6032a |
114 | }; |
b2b22cd6 |
115 | } |
6f4ddea1 |
116 | |
e9657379 |
117 | # the "oh noes offset/top without limit" constant |
fcb7fcbb |
118 | # limited to 31 bits for sanity (and consistency, |
119 | # since it may be handed to the like of sprintf %u) |
120 | # |
121 | # Also *some* builds of SQLite fail the test |
122 | # some_column BETWEEN ? AND ?: 1, 4294967295 |
123 | # with the proper integer bind attrs |
124 | # |
6a247f33 |
125 | # Implemented as a method, since ::Storage::DBI also |
126 | # refers to it (i.e. for the case of software_limit or |
127 | # as the value to abuse with MSSQL ordered subqueries) |
fcb7fcbb |
128 | sub __max_int () { 0x7FFFFFFF }; |
e9657379 |
129 | |
1b5ddf23 |
130 | # we ne longer need to check this - DBIC has ways of dealing with it |
131 | # specifically ::Storage::DBI::_resolve_bindattrs() |
132 | sub _assert_bindval_matches_bindtype () { 1 }; |
133 | |
e39f188a |
134 | # poor man's de-qualifier |
135 | sub _quote { |
136 | $_[0]->next::method( ( $_[0]{_dequalify_idents} and ! ref $_[1] ) |
137 | ? $_[1] =~ / ([^\.]+) $ /x |
138 | : $_[1] |
139 | ); |
140 | } |
141 | |
b1d821de |
142 | sub _where_op_NEST { |
70c28808 |
143 | carp_unique ("-nest in search conditions is deprecated, you most probably wanted:\n" |
b1d821de |
144 | .q|{..., -and => [ \%cond0, \@cond1, \'cond2', \[ 'cond3', [ col => bind ] ], etc. ], ... }| |
70c28808 |
145 | ); |
b1d821de |
146 | |
147 | shift->next::method(@_); |
148 | } |
149 | |
6a247f33 |
150 | # Handle limit-dialect selection |
6f4ddea1 |
151 | sub select { |
6a247f33 |
152 | my ($self, $table, $fields, $where, $rs_attrs, $limit, $offset) = @_; |
153 | |
154 | |
ad1d374e |
155 | ($fields, @{$self->{select_bind}}) = $self->_recurse_fields($fields); |
6a247f33 |
156 | |
157 | if (defined $offset) { |
70c28808 |
158 | $self->throw_exception('A supplied offset must be a non-negative integer') |
6a247f33 |
159 | if ( $offset =~ /\D/ or $offset < 0 ); |
160 | } |
161 | $offset ||= 0; |
1cbd3034 |
162 | |
6a247f33 |
163 | if (defined $limit) { |
70c28808 |
164 | $self->throw_exception('A supplied limit must be a positive integer') |
6a247f33 |
165 | if ( $limit =~ /\D/ or $limit <= 0 ); |
166 | } |
167 | elsif ($offset) { |
168 | $limit = $self->__max_int; |
6f4ddea1 |
169 | } |
c2b7c5dc |
170 | |
a6b68a60 |
171 | |
6a247f33 |
172 | my ($sql, @bind); |
173 | if ($limit) { |
174 | # this is legacy code-flow from SQLA::Limit, it is not set in stone |
175 | |
176 | ($sql, @bind) = $self->next::method ($table, $fields, $where); |
177 | |
67341081 |
178 | my $limiter; |
179 | |
180 | if( $limiter = $self->can ('emulate_limit') ) { |
181 | carp_unique( |
182 | 'Support for the legacy emulate_limit() mechanism inherited from ' |
183 | . 'SQL::Abstract::Limit has been deprecated, and will be removed when ' |
184 | . 'DBIC transitions to Data::Query. If your code uses this type of ' |
185 | . 'limit specification please file an RT and provide the source of ' |
186 | . 'your emulate_limit() implementation, so an acceptable upgrade-path ' |
187 | . 'can be devised' |
188 | ); |
189 | } |
190 | else { |
191 | my $dialect = $self->limit_dialect |
192 | or $self->throw_exception( "Unable to generate SQL-limit - no limit dialect specified on $self" ); |
193 | |
194 | $limiter = $self->can ("_$dialect") |
195 | or $self->throw_exception(__PACKAGE__ . " does not implement the requested dialect '$dialect'"); |
196 | } |
6a247f33 |
197 | |
f74d22e2 |
198 | $sql = $self->$limiter ( |
199 | $sql, |
200 | { %{$rs_attrs||{}}, _selector_sql => $fields }, |
201 | $limit, |
202 | $offset |
203 | ); |
6a247f33 |
204 | } |
205 | else { |
206 | ($sql, @bind) = $self->next::method ($table, $fields, $where, $rs_attrs); |
207 | } |
208 | |
49afd714 |
209 | push @{$self->{where_bind}}, @bind; |
583a0c65 |
210 | |
211 | # this *must* be called, otherwise extra binds will remain in the sql-maker |
49afd714 |
212 | my @all_bind = $self->_assemble_binds; |
583a0c65 |
213 | |
e5372da4 |
214 | $sql .= $self->_lock_select ($rs_attrs->{for}) |
215 | if $rs_attrs->{for}; |
216 | |
49afd714 |
217 | return wantarray ? ($sql, @all_bind) : $sql; |
583a0c65 |
218 | } |
219 | |
220 | sub _assemble_binds { |
221 | my $self = shift; |
8b31f62e |
222 | return map { @{ (delete $self->{"${_}_bind"}) || [] } } (qw/pre_select select from where group having order limit/); |
6f4ddea1 |
223 | } |
224 | |
e5372da4 |
225 | my $for_syntax = { |
226 | update => 'FOR UPDATE', |
227 | shared => 'FOR SHARE', |
228 | }; |
229 | sub _lock_select { |
230 | my ($self, $type) = @_; |
8249c09b |
231 | |
232 | my $sql; |
233 | if (ref($type) eq 'SCALAR') { |
234 | $sql = "FOR $$type"; |
235 | } |
236 | else { |
237 | $sql = $for_syntax->{$type} || $self->throw_exception( "Unknown SELECT .. FOR type '$type' requested" ); |
238 | } |
239 | |
e5372da4 |
240 | return " $sql"; |
241 | } |
242 | |
6a247f33 |
243 | # Handle default inserts |
6f4ddea1 |
244 | sub insert { |
6a247f33 |
245 | # optimized due to hotttnesss |
246 | # my ($self, $table, $data, $options) = @_; |
7a72e5a5 |
247 | |
248 | # SQLA will emit INSERT INTO $table ( ) VALUES ( ) |
249 | # which is sadly understood only by MySQL. Change default behavior here, |
250 | # until SQLA2 comes with proper dialect support |
6a247f33 |
251 | if (! $_[2] or (ref $_[2] eq 'HASH' and !keys %{$_[2]} ) ) { |
bf51641f |
252 | my @bind; |
20595c02 |
253 | my $sql = sprintf( |
254 | 'INSERT INTO %s DEFAULT VALUES', $_[0]->_quote($_[1]) |
255 | ); |
28d28903 |
256 | |
bf51641f |
257 | if ( ($_[3]||{})->{returning} ) { |
258 | my $s; |
259 | ($s, @bind) = $_[0]->_insert_returning ($_[3]); |
260 | $sql .= $s; |
28d28903 |
261 | } |
262 | |
bf51641f |
263 | return ($sql, @bind); |
7a72e5a5 |
264 | } |
265 | |
6a247f33 |
266 | next::method(@_); |
6f4ddea1 |
267 | } |
268 | |
269 | sub _recurse_fields { |
81446c4f |
270 | my ($self, $fields) = @_; |
6f4ddea1 |
271 | my $ref = ref $fields; |
272 | return $self->_quote($fields) unless $ref; |
273 | return $$fields if $ref eq 'SCALAR'; |
274 | |
275 | if ($ref eq 'ARRAY') { |
ad1d374e |
276 | my (@select, @bind); |
277 | for my $field (@$fields) { |
278 | my ($select, @new_bind) = $self->_recurse_fields($field); |
279 | push @select, $select; |
280 | push @bind, @new_bind; |
281 | } |
282 | return (join(', ', @select), @bind); |
83e09b5b |
283 | } |
284 | elsif ($ref eq 'HASH') { |
81446c4f |
285 | my %hash = %$fields; # shallow copy |
83e09b5b |
286 | |
50136dd9 |
287 | my $as = delete $hash{-as}; # if supplied |
288 | |
ad1d374e |
289 | my ($func, $rhs, @toomany) = %hash; |
81446c4f |
290 | |
291 | # there should be only one pair |
292 | if (@toomany) { |
70c28808 |
293 | $self->throw_exception( "Malformed select argument - too many keys in hash: " . join (',', keys %$fields ) ); |
81446c4f |
294 | } |
50136dd9 |
295 | |
ad1d374e |
296 | if (lc ($func) eq 'distinct' && ref $rhs eq 'ARRAY' && @$rhs > 1) { |
70c28808 |
297 | $self->throw_exception ( |
50136dd9 |
298 | 'The select => { distinct => ... } syntax is not supported for multiple columns.' |
ad1d374e |
299 | .' Instead please use { group_by => [ qw/' . (join ' ', @$rhs) . '/ ] }' |
300 | .' or { select => [ qw/' . (join ' ', @$rhs) . '/ ], distinct => 1 }' |
83e09b5b |
301 | ); |
6f4ddea1 |
302 | } |
83e09b5b |
303 | |
ad1d374e |
304 | my ($rhs_sql, @rhs_bind) = $self->_recurse_fields($rhs); |
50136dd9 |
305 | my $select = sprintf ('%s( %s )%s', |
306 | $self->_sqlcase($func), |
ad1d374e |
307 | $rhs_sql, |
50136dd9 |
308 | $as |
0491b597 |
309 | ? sprintf (' %s %s', $self->_sqlcase('as'), $self->_quote ($as) ) |
50136dd9 |
310 | : '' |
311 | ); |
312 | |
ad1d374e |
313 | return ($select, @rhs_bind); |
6f4ddea1 |
314 | } |
6f4ddea1 |
315 | elsif ( $ref eq 'REF' and ref($$fields) eq 'ARRAY' ) { |
ad1d374e |
316 | return @{$$fields}; |
6f4ddea1 |
317 | } |
318 | else { |
70c28808 |
319 | $self->throw_exception( $ref . qq{ unexpected in _recurse_fields()} ); |
6f4ddea1 |
320 | } |
321 | } |
322 | |
a6b68a60 |
323 | |
324 | # this used to be a part of _order_by but is broken out for clarity. |
325 | # What we have been doing forever is hijacking the $order arg of |
326 | # SQLA::select to pass in arbitrary pieces of data (first the group_by, |
327 | # then pretty much the entire resultset attr-hash, as more and more |
4a0eed52 |
328 | # things in the SQLA space need to have more info about the $rs they |
a6b68a60 |
329 | # create SQL for. The alternative would be to keep expanding the |
330 | # signature of _select with more and more positional parameters, which |
331 | # is just gross. All hail SQLA2! |
332 | sub _parse_rs_attrs { |
1cbd3034 |
333 | my ($self, $arg) = @_; |
15827712 |
334 | |
a6b68a60 |
335 | my $sql = ''; |
1cbd3034 |
336 | |
0542ec57 |
337 | if ($arg->{group_by}) { |
ad1d374e |
338 | if ( my ($group_sql, @group_bind) = $self->_recurse_fields($arg->{group_by}) ) { |
339 | $sql .= $self->_sqlcase(' group by ') . $group_sql; |
340 | push @{$self->{group_bind}}, @group_bind; |
0542ec57 |
341 | } |
a6b68a60 |
342 | } |
1cbd3034 |
343 | |
a6b68a60 |
344 | if (defined $arg->{having}) { |
345 | my ($frag, @bind) = $self->_recurse_where($arg->{having}); |
346 | push(@{$self->{having_bind}}, @bind); |
347 | $sql .= $self->_sqlcase(' having ') . $frag; |
348 | } |
15827712 |
349 | |
a6b68a60 |
350 | if (defined $arg->{order_by}) { |
351 | $sql .= $self->_order_by ($arg->{order_by}); |
352 | } |
15827712 |
353 | |
a6b68a60 |
354 | return $sql; |
355 | } |
356 | |
357 | sub _order_by { |
358 | my ($self, $arg) = @_; |
15827712 |
359 | |
a6b68a60 |
360 | # check that we are not called in legacy mode (order_by as 4th argument) |
361 | if (ref $arg eq 'HASH' and not grep { $_ =~ /^-(?:desc|asc)/i } keys %$arg ) { |
362 | return $self->_parse_rs_attrs ($arg); |
fde3719a |
363 | } |
1cbd3034 |
364 | else { |
6a247f33 |
365 | my ($sql, @bind) = $self->next::method($arg); |
a6b68a60 |
366 | push @{$self->{order_bind}}, @bind; |
1cbd3034 |
367 | return $sql; |
fd4cb60a |
368 | } |
6f4ddea1 |
369 | } |
370 | |
cb3e87f5 |
371 | sub _split_order_chunk { |
372 | my ($self, $chunk) = @_; |
373 | |
374 | # strip off sort modifiers, but always succeed, so $1 gets reset |
375 | $chunk =~ s/ (?: \s+ (ASC|DESC) )? \s* $//ix; |
376 | |
377 | return ( |
378 | $chunk, |
379 | ( $1 and uc($1) eq 'DESC' ) ? 1 : 0, |
380 | ); |
381 | } |
382 | |
6f4ddea1 |
383 | sub _table { |
6a247f33 |
384 | # optimized due to hotttnesss |
385 | # my ($self, $from) = @_; |
386 | if (my $ref = ref $_[1] ) { |
387 | if ($ref eq 'ARRAY') { |
388 | return $_[0]->_recurse_from(@{$_[1]}); |
389 | } |
390 | elsif ($ref eq 'HASH') { |
4c2b30d6 |
391 | return $_[0]->_recurse_from($_[1]); |
6a247f33 |
392 | } |
1bffc6b8 |
393 | elsif ($ref eq 'REF' && ref ${$_[1]} eq 'ARRAY') { |
394 | my ($sql, @bind) = @{ ${$_[1]} }; |
395 | push @{$_[0]->{from_bind}}, @bind; |
396 | return $sql |
397 | } |
6f4ddea1 |
398 | } |
6a247f33 |
399 | return $_[0]->next::method ($_[1]); |
6f4ddea1 |
400 | } |
401 | |
b8391c87 |
402 | sub _generate_join_clause { |
403 | my ($self, $join_type) = @_; |
404 | |
726c8f65 |
405 | $join_type = $self->{_default_jointype} |
406 | if ! defined $join_type; |
407 | |
b8391c87 |
408 | return sprintf ('%s JOIN ', |
726c8f65 |
409 | $join_type ? $self->_sqlcase($join_type) : '' |
b8391c87 |
410 | ); |
411 | } |
412 | |
6f4ddea1 |
413 | sub _recurse_from { |
726c8f65 |
414 | my $self = shift; |
726c8f65 |
415 | return join (' ', $self->_gen_from_blocks(@_) ); |
416 | } |
417 | |
418 | sub _gen_from_blocks { |
419 | my ($self, $from, @joins) = @_; |
420 | |
421 | my @fchunks = $self->_from_chunk_to_sql($from); |
6f4ddea1 |
422 | |
726c8f65 |
423 | for (@joins) { |
4c2b30d6 |
424 | my ($to, $on) = @$_; |
aa82ce29 |
425 | |
6f4ddea1 |
426 | # check whether a join type exists |
6f4ddea1 |
427 | my $to_jt = ref($to) eq 'ARRAY' ? $to->[0] : $to; |
aa82ce29 |
428 | my $join_type; |
429 | if (ref($to_jt) eq 'HASH' and defined($to_jt->{-join_type})) { |
430 | $join_type = $to_jt->{-join_type}; |
431 | $join_type =~ s/^\s+ | \s+$//xg; |
6f4ddea1 |
432 | } |
aa82ce29 |
433 | |
726c8f65 |
434 | my @j = $self->_generate_join_clause( $join_type ); |
6f4ddea1 |
435 | |
436 | if (ref $to eq 'ARRAY') { |
726c8f65 |
437 | push(@j, '(', $self->_recurse_from(@$to), ')'); |
438 | } |
439 | else { |
440 | push(@j, $self->_from_chunk_to_sql($to)); |
6f4ddea1 |
441 | } |
726c8f65 |
442 | |
a697fa31 |
443 | my ($sql, @bind) = $self->_join_condition($on); |
b4e9f590 |
444 | push(@j, ' ON ', $sql); |
a697fa31 |
445 | push @{$self->{from_bind}}, @bind; |
726c8f65 |
446 | |
447 | push @fchunks, join '', @j; |
6f4ddea1 |
448 | } |
726c8f65 |
449 | |
450 | return @fchunks; |
6f4ddea1 |
451 | } |
452 | |
4c2b30d6 |
453 | sub _from_chunk_to_sql { |
454 | my ($self, $fromspec) = @_; |
455 | |
e8885a53 |
456 | return join (' ', do { |
457 | if (! ref $fromspec) { |
458 | $self->_quote($fromspec); |
459 | } |
460 | elsif (ref $fromspec eq 'SCALAR') { |
4c2b30d6 |
461 | $$fromspec; |
e8885a53 |
462 | } |
463 | elsif (ref $fromspec eq 'REF' and ref $$fromspec eq 'ARRAY') { |
4c2b30d6 |
464 | push @{$self->{from_bind}}, @{$$fromspec}[1..$#$$fromspec]; |
465 | $$fromspec->[0]; |
e8885a53 |
466 | } |
467 | elsif (ref $fromspec eq 'HASH') { |
4c2b30d6 |
468 | my ($as, $table, $toomuch) = ( map |
469 | { $_ => $fromspec->{$_} } |
470 | ( grep { $_ !~ /^\-/ } keys %$fromspec ) |
471 | ); |
6f4ddea1 |
472 | |
70c28808 |
473 | $self->throw_exception( "Only one table/as pair expected in from-spec but an exra '$toomuch' key present" ) |
4c2b30d6 |
474 | if defined $toomuch; |
6f4ddea1 |
475 | |
4c2b30d6 |
476 | ($self->_from_chunk_to_sql($table), $self->_quote($as) ); |
e8885a53 |
477 | } |
478 | else { |
479 | $self->throw_exception('Unsupported from refkind: ' . ref $fromspec ); |
480 | } |
481 | }); |
6f4ddea1 |
482 | } |
483 | |
484 | sub _join_condition { |
485 | my ($self, $cond) = @_; |
4c2b30d6 |
486 | |
a697fa31 |
487 | # Backcompat for the old days when a plain hashref |
488 | # { 't1.col1' => 't2.col2' } meant ON t1.col1 = t2.col2 |
489 | # Once things settle we should start warning here so that |
490 | # folks unroll their hacks |
491 | if ( |
492 | ref $cond eq 'HASH' |
493 | and |
494 | keys %$cond == 1 |
495 | and |
496 | (keys %$cond)[0] =~ /\./ |
497 | and |
498 | ! ref ( (values %$cond)[0] ) |
499 | ) { |
500 | $cond = { keys %$cond => { -ident => values %$cond } } |
6f4ddea1 |
501 | } |
a697fa31 |
502 | elsif ( ref $cond eq 'ARRAY' ) { |
503 | # do our own ORing so that the hashref-shim above is invoked |
9aae3566 |
504 | my @parts; |
505 | my @binds; |
506 | foreach my $c (@$cond) { |
507 | my ($sql, @bind) = $self->_join_condition($c); |
508 | push @binds, @bind; |
509 | push @parts, $sql; |
510 | } |
511 | return join(' OR ', @parts), @binds; |
6f4ddea1 |
512 | } |
a697fa31 |
513 | |
514 | return $self->_recurse_where($cond); |
6f4ddea1 |
515 | } |
516 | |
66137dff |
517 | # This is hideously ugly, but SQLA does not understand multicol IN expressions |
518 | # FIXME TEMPORARY - DQ should have native syntax for this |
519 | # moved here to raise API questions |
520 | # |
521 | # !!! EXPERIMENTAL API !!! WILL CHANGE !!! |
522 | sub _where_op_multicolumn_in { |
523 | my ($self, $lhs, $rhs) = @_; |
524 | |
525 | if (! ref $lhs or ref $lhs eq 'ARRAY') { |
526 | my (@sql, @bind); |
527 | for (ref $lhs ? @$lhs : $lhs) { |
528 | if (! ref $_) { |
529 | push @sql, $self->_quote($_); |
530 | } |
531 | elsif (ref $_ eq 'SCALAR') { |
532 | push @sql, $$_; |
533 | } |
534 | elsif (ref $_ eq 'REF' and ref $$_ eq 'ARRAY') { |
535 | my ($s, @b) = @$$_; |
536 | push @sql, $s; |
537 | push @bind, @b; |
538 | } |
539 | else { |
540 | $self->throw_exception("ARRAY of @{[ ref $_ ]}es unsupported for multicolumn IN lhs..."); |
541 | } |
542 | } |
543 | $lhs = \[ join(', ', @sql), @bind]; |
544 | } |
545 | elsif (ref $lhs eq 'SCALAR') { |
546 | $lhs = \[ $$lhs ]; |
547 | } |
548 | elsif (ref $lhs eq 'REF' and ref $$lhs eq 'ARRAY' ) { |
549 | # noop |
550 | } |
551 | else { |
552 | $self->throw_exception( ref($lhs) . "es unsupported for multicolumn IN lhs..."); |
553 | } |
554 | |
555 | # is this proper...? |
556 | $rhs = \[ $self->_recurse_where($rhs) ]; |
557 | |
558 | for ($lhs, $rhs) { |
559 | $$_->[0] = "( $$_->[0] )" |
1d1ccc94 |
560 | unless $$_->[0] =~ /^ \s* \( .* \) \s* $/xs; |
66137dff |
561 | } |
562 | |
563 | \[ join( ' IN ', shift @$$lhs, shift @$$rhs ), @$$lhs, @$$rhs ]; |
564 | } |
565 | |
6f4ddea1 |
566 | 1; |
d5dedbd6 |
567 | |
568 | =head1 AUTHORS |
569 | |
570 | See L<DBIx::Class/CONTRIBUTORS>. |
571 | |
572 | =head1 LICENSE |
573 | |
574 | You may distribute this code under the same terms as Perl itself. |
575 | |
576 | =cut |