Commit | Line | Data |
6f4ddea1 |
1 | package # Hide from PAUSE |
855c6fd0 |
2 | DBIx::Class::SQLAHacks; |
6f4ddea1 |
3 | |
998373c2 |
4 | # This module is a subclass of SQL::Abstract::Limit and includes a number |
5 | # of DBIC-specific workarounds, not yet suitable for inclusion into the |
6 | # SQLA core |
7 | |
6f4ddea1 |
8 | use base qw/SQL::Abstract::Limit/; |
e3764383 |
9 | use strict; |
10 | use warnings; |
b2b22cd6 |
11 | use Carp::Clan qw/^DBIx::Class|^SQL::Abstract/; |
8637bb24 |
12 | use Sub::Name(); |
b2b22cd6 |
13 | |
14 | BEGIN { |
15 | # reinstall the carp()/croak() functions imported into SQL::Abstract |
16 | # as Carp and Carp::Clan do not like each other much |
17 | no warnings qw/redefine/; |
18 | no strict qw/refs/; |
19 | for my $f (qw/carp croak/) { |
329d7385 |
20 | |
b2b22cd6 |
21 | my $orig = \&{"SQL::Abstract::$f"}; |
8637bb24 |
22 | *{"SQL::Abstract::$f"} = Sub::Name::subname "SQL::Abstract::$f" => |
23 | sub { |
24 | if (Carp::longmess() =~ /DBIx::Class::SQLAHacks::[\w]+ .+? called \s at/x) { |
25 | __PACKAGE__->can($f)->(@_); |
26 | } |
27 | else { |
28 | goto $orig; |
29 | } |
30 | }; |
b2b22cd6 |
31 | } |
32 | } |
6f4ddea1 |
33 | |
998373c2 |
34 | |
35 | # Tries to determine limit dialect. |
36 | # |
6f4ddea1 |
37 | sub new { |
38 | my $self = shift->SUPER::new(@_); |
39 | |
40 | # This prevents the caching of $dbh in S::A::L, I believe |
41 | # If limit_dialect is a ref (like a $dbh), go ahead and replace |
42 | # it with what it resolves to: |
43 | $self->{limit_dialect} = $self->_find_syntax($self->{limit_dialect}) |
44 | if ref $self->{limit_dialect}; |
45 | |
46 | $self; |
47 | } |
48 | |
6f4ddea1 |
49 | |
15827712 |
50 | # Slow but ANSI standard Limit/Offset support. DB2 uses this |
6f4ddea1 |
51 | sub _RowNumberOver { |
52 | my ($self, $sql, $order, $rows, $offset ) = @_; |
53 | |
54 | $offset += 1; |
03e1d9af |
55 | my $last = $rows + $offset - 1; |
6f4ddea1 |
56 | my ( $order_by ) = $self->_order_by( $order ); |
57 | |
58 | $sql = <<"SQL"; |
59 | SELECT * FROM |
60 | ( |
61 | SELECT Q1.*, ROW_NUMBER() OVER( ) AS ROW_NUM FROM ( |
62 | $sql |
63 | $order_by |
64 | ) Q1 |
65 | ) Q2 |
66 | WHERE ROW_NUM BETWEEN $offset AND $last |
67 | |
68 | SQL |
69 | |
70 | return $sql; |
71 | } |
72 | |
15827712 |
73 | # Crappy Top based Limit/Offset support. MSSQL uses this currently, |
74 | # but may have to switch to RowNumberOver one day |
75 | sub _Top { |
76 | my ( $self, $sql, $order, $rows, $offset ) = @_; |
77 | |
b1e1d073 |
78 | # mangle the input sql so it can be properly aliased in the outer queries |
79 | $sql =~ s/^ \s* SELECT \s+ (.+?) \s+ (?=FROM)//ix |
80 | or croak "Unrecognizable SELECT: $sql"; |
42e5b103 |
81 | my $sql_select = $1; |
82 | my @sql_select = split (/\s*,\s*/, $sql_select); |
83 | |
84 | # we can't support subqueries (in fact MSSQL can't) - croak |
85 | if (@sql_select != @{$self->{_dbic_rs_attrs}{select}}) { |
86 | croak (sprintf ( |
87 | 'SQL SELECT did not parse cleanly - retrieved %d comma separated elements, while ' |
88 | . 'the resultset select attribure contains %d elements: %s', |
89 | scalar @sql_select, |
90 | scalar @{$self->{_dbic_rs_attrs}{select}}, |
91 | $sql_select, |
92 | )); |
93 | } |
b1e1d073 |
94 | |
42e5b103 |
95 | my $name_sep = $self->name_sep || '.'; |
ac93965c |
96 | my $esc_name_sep = "\Q$name_sep\E"; |
97 | my $col_re = qr/ ^ (?: (.+) $esc_name_sep )? ([^$esc_name_sep]+) $ /x; |
98 | |
99 | my $rs_alias = $self->{_dbic_rs_attrs}{alias}; |
100 | my $quoted_rs_alias = $self->_quote ($rs_alias); |
b1e1d073 |
101 | |
42e5b103 |
102 | # construct the new select lists, rename(alias) some columns if necessary |
103 | my (@outer_select, @inner_select, %seen_names, %col_aliases, %outer_col_aliases); |
b1e1d073 |
104 | |
42e5b103 |
105 | for (@{$self->{_dbic_rs_attrs}{select}}) { |
106 | next if ref $_; |
107 | my ($table, $orig_colname) = ( $_ =~ $col_re ); |
108 | next unless $table; |
109 | $seen_names{$orig_colname}++; |
110 | } |
b1e1d073 |
111 | |
42e5b103 |
112 | for my $i (0 .. $#sql_select) { |
b1e1d073 |
113 | |
42e5b103 |
114 | my $colsel_arg = $self->{_dbic_rs_attrs}{select}[$i]; |
115 | my $colsel_sql = $sql_select[$i]; |
b1e1d073 |
116 | |
42e5b103 |
117 | # this may or may not work (in case of a scalarref or something) |
118 | my ($table, $orig_colname) = ( $colsel_arg =~ $col_re ); |
b1e1d073 |
119 | |
42e5b103 |
120 | my $quoted_alias; |
121 | # do not attempt to understand non-scalar selects - alias numerically |
122 | if (ref $colsel_arg) { |
123 | $quoted_alias = $self->_quote ('column_' . (@inner_select + 1) ); |
124 | } |
125 | # column name seen more than once - alias it |
ed4cdb4f |
126 | elsif ($orig_colname && |
127 | ($seen_names{$orig_colname} && $seen_names{$orig_colname} > 1) ) { |
42e5b103 |
128 | $quoted_alias = $self->_quote ("${table}__${orig_colname}"); |
129 | } |
b1e1d073 |
130 | |
42e5b103 |
131 | # we did rename - make a record and adjust |
132 | if ($quoted_alias) { |
133 | # alias inner |
134 | push @inner_select, "$colsel_sql AS $quoted_alias"; |
135 | |
136 | # push alias to outer |
137 | push @outer_select, $quoted_alias; |
138 | |
139 | # Any aliasing accumulated here will be considered |
140 | # both for inner and outer adjustments of ORDER BY |
141 | $self->__record_alias ( |
142 | \%col_aliases, |
143 | $quoted_alias, |
144 | $colsel_arg, |
145 | $table ? $orig_colname : undef, |
146 | ); |
b1e1d073 |
147 | } |
148 | |
42e5b103 |
149 | # otherwise just leave things intact inside, and use the abbreviated one outside |
150 | # (as we do not have table names anymore) |
151 | else { |
152 | push @inner_select, $colsel_sql; |
153 | |
154 | my $outer_quoted = $self->_quote ($orig_colname); # it was not a duplicate so should just work |
155 | push @outer_select, $outer_quoted; |
156 | $self->__record_alias ( |
157 | \%outer_col_aliases, |
158 | $outer_quoted, |
159 | $colsel_arg, |
160 | $table ? $orig_colname : undef, |
161 | ); |
162 | } |
b1e1d073 |
163 | } |
164 | |
165 | my $outer_select = join (', ', @outer_select ); |
42e5b103 |
166 | my $inner_select = join (', ', @inner_select ); |
b1e1d073 |
167 | |
42e5b103 |
168 | %outer_col_aliases = (%outer_col_aliases, %col_aliases); |
b1e1d073 |
169 | |
170 | # deal with order |
15827712 |
171 | croak '$order supplied to SQLAHacks limit emulators must be a hash' |
172 | if (ref $order ne 'HASH'); |
173 | |
8f6dbee9 |
174 | $order = { %$order }; #copy |
175 | |
02d133f0 |
176 | my $req_order = $order->{order_by}; |
15827712 |
177 | |
e2db8319 |
178 | # examine normalized version, collapses nesting |
179 | my $limit_order; |
180 | if (scalar $self->_order_by_chunks ($req_order)) { |
181 | $limit_order = $req_order; |
182 | } |
183 | else { |
e2db8319 |
184 | $limit_order = [ map |
185 | { join ('', $rs_alias, $name_sep, $_ ) } |
186 | ( $self->{_dbic_rs_attrs}{_source_handle}->resolve->primary_columns ) |
187 | ]; |
188 | } |
1cbd3034 |
189 | |
42e5b103 |
190 | my ( $order_by_inner, $order_by_outer ) = $self->_order_directions($limit_order); |
191 | my $order_by_requested = $self->_order_by ($req_order); |
15827712 |
192 | |
64c7c000 |
193 | # generate the rest |
e2db8319 |
194 | delete $order->{order_by}; |
8f6dbee9 |
195 | my $grpby_having = $self->_order_by ($order); |
196 | |
64c7c000 |
197 | # short circuit for counts - the ordering complexity is needless |
198 | if ($self->{_dbic_rs_attrs}{-for_count_only}) { |
199 | return "SELECT TOP $rows $inner_select $sql $grpby_having $order_by_outer"; |
200 | } |
201 | |
42e5b103 |
202 | # we can't really adjust the order_by columns, as introspection is lacking |
203 | # resort to simple substitution |
204 | for my $col (keys %outer_col_aliases) { |
205 | for ($order_by_requested, $order_by_outer) { |
206 | $_ =~ s/\s+$col\s+/ $outer_col_aliases{$col} /g; |
b1e1d073 |
207 | } |
208 | } |
42e5b103 |
209 | for my $col (keys %col_aliases) { |
9c1ffdde |
210 | $order_by_inner =~ s/\s+$col\s+/ $col_aliases{$col} /g; |
42e5b103 |
211 | } |
15827712 |
212 | |
15827712 |
213 | |
42e5b103 |
214 | my $inner_lim = $rows + $offset; |
15827712 |
215 | |
618a0fe3 |
216 | $sql = "SELECT TOP $inner_lim $inner_select $sql $grpby_having $order_by_inner"; |
42e5b103 |
217 | |
218 | if ($offset) { |
219 | $sql = <<"SQL"; |
b1e1d073 |
220 | |
221 | SELECT TOP $rows $outer_select FROM |
15827712 |
222 | ( |
42e5b103 |
223 | $sql |
ac93965c |
224 | ) $quoted_rs_alias |
15827712 |
225 | $order_by_outer |
b1e1d073 |
226 | SQL |
227 | |
42e5b103 |
228 | } |
15827712 |
229 | |
42e5b103 |
230 | if ($order_by_requested) { |
b1e1d073 |
231 | $sql = <<"SQL"; |
15827712 |
232 | |
42e5b103 |
233 | SELECT $outer_select FROM |
ac93965c |
234 | ( $sql ) $quoted_rs_alias |
235 | $order_by_requested |
15827712 |
236 | SQL |
b1e1d073 |
237 | |
238 | } |
239 | |
ac93965c |
240 | $sql =~ s/\s*\n\s*/ /g; # parsing out multiline statements is harder than a single line |
b1e1d073 |
241 | return $sql; |
15827712 |
242 | } |
243 | |
42e5b103 |
244 | # action at a distance to shorten Top code above |
245 | sub __record_alias { |
246 | my ($self, $register, $alias, $fqcol, $col) = @_; |
247 | |
248 | # record qualified name |
249 | $register->{$fqcol} = $alias; |
250 | $register->{$self->_quote($fqcol)} = $alias; |
251 | |
252 | return unless $col; |
253 | |
b6d347e0 |
254 | # record unqualified name, undef (no adjustment) if a duplicate is found |
42e5b103 |
255 | if (exists $register->{$col}) { |
256 | $register->{$col} = undef; |
257 | } |
258 | else { |
259 | $register->{$col} = $alias; |
260 | } |
261 | |
262 | $register->{$self->_quote($col)} = $register->{$col}; |
15827712 |
263 | } |
264 | |
265 | |
6f4ddea1 |
266 | |
267 | # While we're at it, this should make LIMIT queries more efficient, |
268 | # without digging into things too deeply |
6f4ddea1 |
269 | sub _find_syntax { |
270 | my ($self, $syntax) = @_; |
ac788c46 |
271 | return $self->{_cached_syntax} ||= $self->SUPER::_find_syntax($syntax); |
6f4ddea1 |
272 | } |
273 | |
ec7cfd36 |
274 | my $for_syntax = { |
275 | update => 'FOR UPDATE', |
276 | shared => 'FOR SHARE', |
277 | }; |
998373c2 |
278 | # Quotes table names, handles "limit" dialects (e.g. where rownum between x and |
279 | # y), supports SELECT ... FOR UPDATE and SELECT ... FOR SHARE. |
6f4ddea1 |
280 | sub select { |
281 | my ($self, $table, $fields, $where, $order, @rest) = @_; |
1cbd3034 |
282 | |
283 | $self->{"${_}_bind"} = [] for (qw/having from order/); |
db56cf3d |
284 | |
c2b7c5dc |
285 | if (not ref($table) or ref($table) eq 'SCALAR') { |
6f4ddea1 |
286 | $table = $self->_quote($table); |
287 | } |
c2b7c5dc |
288 | |
6f4ddea1 |
289 | local $self->{rownum_hack_count} = 1 |
290 | if (defined $rest[0] && $self->{limit_dialect} eq 'RowNum'); |
291 | @rest = (-1) unless defined $rest[0]; |
e8fcf76f |
292 | croak "LIMIT 0 Does Not Compute" if $rest[0] == 0; |
6f4ddea1 |
293 | # and anyway, SQL::Abstract::Limit will cause a barf if we don't first |
db56cf3d |
294 | my ($sql, @where_bind) = $self->SUPER::select( |
6f4ddea1 |
295 | $table, $self->_recurse_fields($fields), $where, $order, @rest |
296 | ); |
ec7cfd36 |
297 | if (my $for = delete $self->{_dbic_rs_attrs}{for}) { |
298 | $sql .= " $for_syntax->{$for}" if $for_syntax->{$for}; |
299 | } |
300 | |
1cbd3034 |
301 | return wantarray ? ($sql, @{$self->{from_bind}}, @where_bind, @{$self->{having_bind}}, @{$self->{order_bind}} ) : $sql; |
6f4ddea1 |
302 | } |
303 | |
998373c2 |
304 | # Quotes table names, and handles default inserts |
6f4ddea1 |
305 | sub insert { |
306 | my $self = shift; |
307 | my $table = shift; |
c2b7c5dc |
308 | $table = $self->_quote($table); |
7a72e5a5 |
309 | |
310 | # SQLA will emit INSERT INTO $table ( ) VALUES ( ) |
311 | # which is sadly understood only by MySQL. Change default behavior here, |
312 | # until SQLA2 comes with proper dialect support |
313 | if (! $_[0] or (ref $_[0] eq 'HASH' and !keys %{$_[0]} ) ) { |
314 | return "INSERT INTO ${table} DEFAULT VALUES" |
315 | } |
316 | |
6f4ddea1 |
317 | $self->SUPER::insert($table, @_); |
318 | } |
319 | |
998373c2 |
320 | # Just quotes table names. |
6f4ddea1 |
321 | sub update { |
322 | my $self = shift; |
323 | my $table = shift; |
c2b7c5dc |
324 | $table = $self->_quote($table); |
6f4ddea1 |
325 | $self->SUPER::update($table, @_); |
326 | } |
327 | |
998373c2 |
328 | # Just quotes table names. |
6f4ddea1 |
329 | sub delete { |
330 | my $self = shift; |
331 | my $table = shift; |
c2b7c5dc |
332 | $table = $self->_quote($table); |
6f4ddea1 |
333 | $self->SUPER::delete($table, @_); |
334 | } |
335 | |
336 | sub _emulate_limit { |
337 | my $self = shift; |
338 | if ($_[3] == -1) { |
339 | return $_[1].$self->_order_by($_[2]); |
340 | } else { |
341 | return $self->SUPER::_emulate_limit(@_); |
342 | } |
343 | } |
344 | |
345 | sub _recurse_fields { |
346 | my ($self, $fields, $params) = @_; |
347 | my $ref = ref $fields; |
348 | return $self->_quote($fields) unless $ref; |
349 | return $$fields if $ref eq 'SCALAR'; |
350 | |
351 | if ($ref eq 'ARRAY') { |
352 | return join(', ', map { |
353 | $self->_recurse_fields($_) |
354 | .(exists $self->{rownum_hack_count} && !($params && $params->{no_rownum_hack}) |
355 | ? ' AS col'.$self->{rownum_hack_count}++ |
356 | : '') |
357 | } @$fields); |
83e09b5b |
358 | } |
359 | elsif ($ref eq 'HASH') { |
360 | my %hash = %$fields; |
83e09b5b |
361 | |
50136dd9 |
362 | my $as = delete $hash{-as}; # if supplied |
363 | |
364 | my ($func, $args) = each %hash; |
365 | delete $hash{$func}; |
366 | |
367 | if (lc ($func) eq 'distinct' && ref $args eq 'ARRAY' && @$args > 1) { |
368 | croak ( |
369 | 'The select => { distinct => ... } syntax is not supported for multiple columns.' |
370 | .' Instead please use { group_by => [ qw/' . (join ' ', @$args) . '/ ] }' |
371 | .' or { select => [ qw/' . (join ' ', @$args) . '/ ], distinct => 1 }' |
83e09b5b |
372 | ); |
6f4ddea1 |
373 | } |
83e09b5b |
374 | |
50136dd9 |
375 | my $select = sprintf ('%s( %s )%s', |
376 | $self->_sqlcase($func), |
377 | $self->_recurse_fields($args), |
378 | $as |
324bc214 |
379 | ? sprintf (' %s %s', $self->_sqlcase('as'), $as) |
50136dd9 |
380 | : '' |
381 | ); |
382 | |
83e09b5b |
383 | # there should be nothing left |
384 | if (keys %hash) { |
385 | croak "Malformed select argument - too many keys in hash: " . join (',', keys %$fields ); |
6f4ddea1 |
386 | } |
83e09b5b |
387 | |
83e09b5b |
388 | return $select; |
6f4ddea1 |
389 | } |
390 | # Is the second check absolutely necessary? |
391 | elsif ( $ref eq 'REF' and ref($$fields) eq 'ARRAY' ) { |
db56cf3d |
392 | return $self->_fold_sqlbind( $fields ); |
6f4ddea1 |
393 | } |
394 | else { |
e8fcf76f |
395 | croak($ref . qq{ unexpected in _recurse_fields()}) |
6f4ddea1 |
396 | } |
397 | } |
398 | |
399 | sub _order_by { |
1cbd3034 |
400 | my ($self, $arg) = @_; |
15827712 |
401 | |
1cbd3034 |
402 | if (ref $arg eq 'HASH' and keys %$arg and not grep { $_ =~ /^-(?:desc|asc)/i } keys %$arg ) { |
403 | |
404 | my $ret = ''; |
405 | |
83e09b5b |
406 | if (my $g = $self->_recurse_fields($arg->{group_by}, { no_rownum_hack => 1 }) ) { |
407 | $ret = $self->_sqlcase(' group by ') . $g; |
6f4ddea1 |
408 | } |
15827712 |
409 | |
1cbd3034 |
410 | if (defined $arg->{having}) { |
411 | my ($frag, @bind) = $self->_recurse_where($arg->{having}); |
412 | push(@{$self->{having_bind}}, @bind); |
6f4ddea1 |
413 | $ret .= $self->_sqlcase(' having ').$frag; |
414 | } |
15827712 |
415 | |
1cbd3034 |
416 | if (defined $arg->{order_by}) { |
417 | my ($frag, @bind) = $self->SUPER::_order_by($arg->{order_by}); |
418 | push(@{$self->{order_bind}}, @bind); |
419 | $ret .= $frag; |
6f4ddea1 |
420 | } |
15827712 |
421 | |
1cbd3034 |
422 | return $ret; |
fde3719a |
423 | } |
1cbd3034 |
424 | else { |
425 | my ($sql, @bind) = $self->SUPER::_order_by ($arg); |
426 | push(@{$self->{order_bind}}, @bind); |
427 | return $sql; |
fd4cb60a |
428 | } |
6f4ddea1 |
429 | } |
430 | |
1cbd3034 |
431 | sub _order_directions { |
fd4cb60a |
432 | my ($self, $order) = @_; |
15827712 |
433 | |
1cbd3034 |
434 | # strip bind values - none of the current _order_directions users support them |
435 | return $self->SUPER::_order_directions( [ map |
436 | { ref $_ ? $_->[0] : $_ } |
437 | $self->_order_by_chunks ($order) |
438 | ]); |
fd4cb60a |
439 | } |
440 | |
6f4ddea1 |
441 | sub _table { |
442 | my ($self, $from) = @_; |
443 | if (ref $from eq 'ARRAY') { |
444 | return $self->_recurse_from(@$from); |
445 | } elsif (ref $from eq 'HASH') { |
446 | return $self->_make_as($from); |
447 | } else { |
448 | return $from; # would love to quote here but _table ends up getting called |
449 | # twice during an ->select without a limit clause due to |
450 | # the way S::A::Limit->select works. should maybe consider |
451 | # bypassing this and doing S::A::select($self, ...) in |
452 | # our select method above. meantime, quoting shims have |
453 | # been added to select/insert/update/delete here |
454 | } |
455 | } |
456 | |
457 | sub _recurse_from { |
458 | my ($self, $from, @join) = @_; |
459 | my @sqlf; |
460 | push(@sqlf, $self->_make_as($from)); |
461 | foreach my $j (@join) { |
462 | my ($to, $on) = @$j; |
463 | |
aa82ce29 |
464 | |
6f4ddea1 |
465 | # check whether a join type exists |
6f4ddea1 |
466 | my $to_jt = ref($to) eq 'ARRAY' ? $to->[0] : $to; |
aa82ce29 |
467 | my $join_type; |
468 | if (ref($to_jt) eq 'HASH' and defined($to_jt->{-join_type})) { |
469 | $join_type = $to_jt->{-join_type}; |
470 | $join_type =~ s/^\s+ | \s+$//xg; |
6f4ddea1 |
471 | } |
aa82ce29 |
472 | |
de5f71ef |
473 | $join_type = $self->{_default_jointype} if not defined $join_type; |
aa82ce29 |
474 | |
475 | my $join_clause = sprintf ('%s JOIN ', |
476 | $join_type ? ' ' . uc($join_type) : '' |
477 | ); |
478 | push @sqlf, $join_clause; |
6f4ddea1 |
479 | |
480 | if (ref $to eq 'ARRAY') { |
481 | push(@sqlf, '(', $self->_recurse_from(@$to), ')'); |
482 | } else { |
483 | push(@sqlf, $self->_make_as($to)); |
484 | } |
485 | push(@sqlf, ' ON ', $self->_join_condition($on)); |
486 | } |
487 | return join('', @sqlf); |
488 | } |
489 | |
db56cf3d |
490 | sub _fold_sqlbind { |
491 | my ($self, $sqlbind) = @_; |
69989ea9 |
492 | |
493 | my @sqlbind = @$$sqlbind; # copy |
494 | my $sql = shift @sqlbind; |
495 | push @{$self->{from_bind}}, @sqlbind; |
496 | |
db56cf3d |
497 | return $sql; |
6f4ddea1 |
498 | } |
499 | |
500 | sub _make_as { |
501 | my ($self, $from) = @_; |
db56cf3d |
502 | return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ |
503 | : ref $_ eq 'REF' ? $self->_fold_sqlbind($_) |
504 | : $self->_quote($_)) |
6f4ddea1 |
505 | } reverse each %{$self->_skip_options($from)}); |
506 | } |
507 | |
508 | sub _skip_options { |
509 | my ($self, $hash) = @_; |
510 | my $clean_hash = {}; |
511 | $clean_hash->{$_} = $hash->{$_} |
512 | for grep {!/^-/} keys %$hash; |
513 | return $clean_hash; |
514 | } |
515 | |
516 | sub _join_condition { |
517 | my ($self, $cond) = @_; |
518 | if (ref $cond eq 'HASH') { |
519 | my %j; |
520 | for (keys %$cond) { |
521 | my $v = $cond->{$_}; |
522 | if (ref $v) { |
e8fcf76f |
523 | croak (ref($v) . qq{ reference arguments are not supported in JOINS - try using \"..." instead'}) |
6f4ddea1 |
524 | if ref($v) ne 'SCALAR'; |
525 | $j{$_} = $v; |
526 | } |
527 | else { |
528 | my $x = '= '.$self->_quote($v); $j{$_} = \$x; |
529 | } |
530 | }; |
531 | return scalar($self->_recurse_where(\%j)); |
532 | } elsif (ref $cond eq 'ARRAY') { |
533 | return join(' OR ', map { $self->_join_condition($_) } @$cond); |
534 | } else { |
535 | die "Can't handle this yet!"; |
536 | } |
537 | } |
538 | |
539 | sub _quote { |
540 | my ($self, $label) = @_; |
541 | return '' unless defined $label; |
c2b7c5dc |
542 | return $$label if ref($label) eq 'SCALAR'; |
6f4ddea1 |
543 | return "*" if $label eq '*'; |
544 | return $label unless $self->{quote_char}; |
545 | if(ref $self->{quote_char} eq "ARRAY"){ |
546 | return $self->{quote_char}->[0] . $label . $self->{quote_char}->[1] |
547 | if !defined $self->{name_sep}; |
548 | my $sep = $self->{name_sep}; |
549 | return join($self->{name_sep}, |
550 | map { $self->{quote_char}->[0] . $_ . $self->{quote_char}->[1] } |
551 | split(/\Q$sep\E/,$label)); |
552 | } |
553 | return $self->SUPER::_quote($label); |
554 | } |
555 | |
556 | sub limit_dialect { |
557 | my $self = shift; |
558 | $self->{limit_dialect} = shift if @_; |
559 | return $self->{limit_dialect}; |
560 | } |
561 | |
998373c2 |
562 | # Set to an array-ref to specify separate left and right quotes for table names. |
563 | # A single scalar is equivalen to [ $char, $char ] |
6f4ddea1 |
564 | sub quote_char { |
565 | my $self = shift; |
566 | $self->{quote_char} = shift if @_; |
567 | return $self->{quote_char}; |
568 | } |
569 | |
998373c2 |
570 | # Character separating quoted table names. |
6f4ddea1 |
571 | sub name_sep { |
572 | my $self = shift; |
573 | $self->{name_sep} = shift if @_; |
574 | return $self->{name_sep}; |
575 | } |
576 | |
577 | 1; |