Commit | Line | Data |
996be9ee |
1 | package DBIx::Class::Schema::Loader::DBI::Pg; |
2 | |
3 | use strict; |
4 | use warnings; |
383bd2a8 |
5 | use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault'; |
942bd5e0 |
6 | use mro 'c3'; |
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7 | |
c52f11c9 |
8 | our $VERSION = '0.07042'; |
32f784fc |
9 | |
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10 | =head1 NAME |
11 | |
8f9d7ce5 |
12 | DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI |
13 | PostgreSQL Implementation. |
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14 | |
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15 | =head1 DESCRIPTION |
16 | |
c4a69b87 |
17 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
18 | |
19 | =cut |
20 | |
21 | sub _setup { |
22 | my $self = shift; |
23 | |
24 | $self->next::method(@_); |
bc1cb85e |
25 | |
c4a69b87 |
26 | $self->{db_schema} ||= ['public']; |
996be9ee |
27 | |
bc1cb85e |
28 | if (not defined $self->preserve_case) { |
29 | $self->preserve_case(0); |
30 | } |
c930f78b |
31 | elsif ($self->preserve_case) { |
32 | $self->schema->storage->sql_maker->quote_char('"'); |
33 | $self->schema->storage->sql_maker->name_sep('.'); |
34 | } |
bc1cb85e |
35 | } |
fbcfebdd |
36 | |
c4a69b87 |
37 | sub _system_schemas { |
38 | my $self = shift; |
12b86f07 |
39 | |
c4a69b87 |
40 | return ($self->next::method(@_), 'pg_catalog'); |
12b86f07 |
41 | } |
42 | |
f839d33b |
43 | my %pg_rules = ( |
44 | a => 'NO ACTION', |
45 | r => 'RESTRICT', |
2e86a3e6 |
46 | c => 'CASCADE', |
f839d33b |
47 | n => 'SET NULL', |
48 | d => 'SET DEFAULT', |
49 | ); |
50 | |
958d5fcf |
51 | sub _table_fk_info { |
52 | my ($self, $table) = @_; |
53 | |
54 | my $sth = $self->dbh->prepare_cached(<<"EOF"); |
b5f68cbe |
55 | select constr.conname, to_ns.nspname, to_class.relname, from_col.attname, to_col.attname, |
56 | constr.confdeltype, constr.confupdtype, constr.condeferrable |
764b262a |
57 | from pg_catalog.pg_constraint constr |
58 | join pg_catalog.pg_namespace from_ns on constr.connamespace = from_ns.oid |
59 | join pg_catalog.pg_class from_class on constr.conrelid = from_class.oid and from_class.relnamespace = from_ns.oid |
60 | join pg_catalog.pg_class to_class on constr.confrelid = to_class.oid |
61 | join pg_catalog.pg_namespace to_ns on to_class.relnamespace = to_ns.oid |
b5f68cbe |
62 | -- can't do unnest() until 8.4, so join against a series table instead |
764b262a |
63 | join pg_catalog.generate_series(1, pg_catalog.current_setting('max_index_keys')::integer) colnum(i) |
64 | on colnum.i <= pg_catalog.array_upper(constr.conkey,1) |
b5f68cbe |
65 | join pg_catalog.pg_attribute to_col |
66 | on to_col.attrelid = constr.confrelid |
67 | and to_col.attnum = constr.confkey[colnum.i] |
68 | join pg_catalog.pg_attribute from_col |
69 | on from_col.attrelid = constr.conrelid |
70 | and from_col.attnum = constr.conkey[colnum.i] |
f839d33b |
71 | where from_ns.nspname = ? |
72 | and from_class.relname = ? |
73 | and from_class.relkind = 'r' |
74 | and constr.contype = 'f' |
b5f68cbe |
75 | order by constr.conname, colnum.i |
958d5fcf |
76 | EOF |
77 | |
f839d33b |
78 | $sth->execute($table->schema, $table->name); |
958d5fcf |
79 | |
80 | my %rels; |
81 | |
82 | while (my ($fk, $remote_schema, $remote_table, $col, $remote_col, |
83 | $delete_rule, $update_rule, $is_deferrable) = $sth->fetchrow_array) { |
84 | push @{ $rels{$fk}{local_columns} }, $self->_lc($col); |
85 | push @{ $rels{$fk}{remote_columns} }, $self->_lc($remote_col); |
86 | |
87 | $rels{$fk}{remote_table} = DBIx::Class::Schema::Loader::Table->new( |
88 | loader => $self, |
89 | name => $remote_table, |
90 | schema => $remote_schema, |
91 | ) unless exists $rels{$fk}{remote_table}; |
92 | |
b9762446 |
93 | $rels{$fk}{attrs} ||= { |
f839d33b |
94 | on_delete => $pg_rules{$delete_rule}, |
95 | on_update => $pg_rules{$update_rule}, |
96 | is_deferrable => $is_deferrable, |
b9762446 |
97 | }; |
958d5fcf |
98 | } |
99 | |
9fc706c1 |
100 | return [ map { $rels{$_} } sort keys %rels ]; |
958d5fcf |
101 | } |
102 | |
103 | |
996be9ee |
104 | sub _table_uniq_info { |
105 | my ($self, $table) = @_; |
106 | |
fd589700 |
107 | # Use the default support if available |
108 | return $self->next::method($table) |
79fe0081 |
109 | if $DBD::Pg::VERSION >= 1.50; |
fd589700 |
110 | |
996be9ee |
111 | my @uniqs; |
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112 | |
5223f24a |
113 | # Most of the SQL here is mostly based on |
114 | # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from |
115 | # John Siracusa to use his superior SQL code :) |
116 | |
c4a69b87 |
117 | my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $self->dbh->prepare( |
5223f24a |
118 | q{SELECT attname FROM pg_catalog.pg_attribute |
119 | WHERE attrelid = ? AND attnum = ?} |
120 | ); |
121 | |
c4a69b87 |
122 | my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $self->dbh->prepare( |
5223f24a |
123 | q{SELECT x.indrelid, i.relname, x.indkey |
124 | FROM |
125 | pg_catalog.pg_index x |
126 | JOIN pg_catalog.pg_class c ON c.oid = x.indrelid |
127 | JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid |
a01ac8ee |
128 | JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace |
5223f24a |
129 | WHERE |
130 | x.indisunique = 't' AND |
a01ac8ee |
131 | x.indpred IS NULL AND |
5223f24a |
132 | c.relkind = 'r' AND |
133 | i.relkind = 'i' AND |
5223f24a |
134 | n.nspname = ? AND |
6c4f5a4a |
135 | c.relname = ? |
136 | ORDER BY i.relname} |
5223f24a |
137 | ); |
138 | |
116431d6 |
139 | $uniq_sth->execute($table->schema, $table->name); |
5223f24a |
140 | while(my $row = $uniq_sth->fetchrow_arrayref) { |
141 | my ($tableid, $indexname, $col_nums) = @$row; |
142 | $col_nums =~ s/^\s+//; |
143 | my @col_nums = split(/\s+/, $col_nums); |
144 | my @col_names; |
145 | |
146 | foreach (@col_nums) { |
147 | $attr_sth->execute($tableid, $_); |
148 | my $name_aref = $attr_sth->fetchrow_arrayref; |
116431d6 |
149 | push(@col_names, $self->_lc($name_aref->[0])) if $name_aref; |
996be9ee |
150 | } |
5223f24a |
151 | |
a01ac8ee |
152 | # skip indexes with missing column names (e.g. expression indexes) |
153 | if(@col_names == @col_nums) { |
5223f24a |
154 | push(@uniqs, [ $indexname => \@col_names ]); |
996be9ee |
155 | } |
156 | } |
157 | |
158 | return \@uniqs; |
159 | } |
160 | |
fbcfebdd |
161 | sub _table_comment { |
c4a69b87 |
162 | my $self = shift; |
163 | my ($table) = @_; |
164 | |
165 | my $table_comment = $self->next::method(@_); |
166 | |
167 | return $table_comment if $table_comment; |
168 | |
169 | ($table_comment) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
764b262a |
170 | SELECT pg_catalog.obj_description(oid) |
171 | FROM pg_catalog.pg_class |
172 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_catalog.pg_namespace WHERE nspname=?) |
c4a69b87 |
173 | EOF |
174 | |
fbcfebdd |
175 | return $table_comment |
176 | } |
177 | |
178 | |
179 | sub _column_comment { |
c4a69b87 |
180 | my $self = shift; |
181 | my ($table, $column_number, $column_name) = @_; |
182 | |
183 | my $column_comment = $self->next::method(@_); |
184 | |
185 | return $column_comment if $column_comment; |
186 | |
187 | my ($table_oid) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
188 | SELECT oid |
764b262a |
189 | FROM pg_catalog.pg_class |
190 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_catalog.pg_namespace WHERE nspname=?) |
c4a69b87 |
191 | EOF |
192 | |
764b262a |
193 | return $self->dbh->selectrow_array('SELECT pg_catalog.col_description(?,?)', {}, $table_oid, $column_number); |
fbcfebdd |
194 | } |
195 | |
baff904e |
196 | # Make sure data_type's that don't need it don't have a 'size' column_info, and |
afb4c5bc |
197 | # set the correct precision for datetime and varbit types. |
baff904e |
198 | sub _columns_info_for { |
199 | my $self = shift; |
200 | my ($table) = @_; |
201 | |
202 | my $result = $self->next::method(@_); |
203 | |
f80b0ea7 |
204 | while (my ($col, $info) = each %$result) { |
205 | my $data_type = $info->{data_type}; |
baff904e |
206 | |
207 | # these types are fixed size |
7640ef4b |
208 | # XXX should this be a negative match? |
baff904e |
209 | if ($data_type =~ |
96336646 |
210 | /^(?:bigint|int8|bigserial|serial8|bool(?:ean)?|box|bytea|cidr|circle|date|double precision|float8|inet|integer|int|int4|line|lseg|macaddr|money|path|point|polygon|real|float4|smallint|int2|serial|serial4|text)\z/i) { |
f80b0ea7 |
211 | delete $info->{size}; |
baff904e |
212 | } |
afb4c5bc |
213 | # for datetime types, check if it has a precision or not |
43b982ea |
214 | elsif ($data_type =~ /^(?:interval|time|timestamp)\b/i) { |
f80b0ea7 |
215 | if (lc($data_type) eq 'timestamp without time zone') { |
216 | $info->{data_type} = 'timestamp'; |
217 | } |
8e030521 |
218 | elsif (lc($data_type) eq 'time without time zone') { |
219 | $info->{data_type} = 'time'; |
220 | } |
f80b0ea7 |
221 | |
baff904e |
222 | my ($precision) = $self->schema->storage->dbh |
116431d6 |
223 | ->selectrow_array(<<EOF, {}, $table->name, $col); |
baff904e |
224 | SELECT datetime_precision |
225 | FROM information_schema.columns |
226 | WHERE table_name = ? and column_name = ? |
227 | EOF |
228 | |
5f85388e |
229 | if ($data_type =~ /^time\b/i) { |
230 | if ((not $precision) || $precision !~ /^\d/) { |
f80b0ea7 |
231 | delete $info->{size}; |
5f85388e |
232 | } |
233 | else { |
c4a69b87 |
234 | my ($integer_datetimes) = $self->dbh |
5f85388e |
235 | ->selectrow_array('show integer_datetimes'); |
236 | |
237 | my $max_precision = |
238 | $integer_datetimes =~ /^on\z/i ? 6 : 10; |
239 | |
240 | if ($precision == $max_precision) { |
f80b0ea7 |
241 | delete $info->{size}; |
5f85388e |
242 | } |
243 | else { |
f80b0ea7 |
244 | $info->{size} = $precision; |
5f85388e |
245 | } |
246 | } |
247 | } |
248 | elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { |
f80b0ea7 |
249 | delete $info->{size}; |
baff904e |
250 | } |
251 | else { |
f80b0ea7 |
252 | $info->{size} = $precision; |
baff904e |
253 | } |
254 | } |
f80b0ea7 |
255 | elsif ($data_type =~ /^(?:bit(?: varying)?|varbit)\z/i) { |
256 | $info->{data_type} = 'varbit' if $data_type =~ /var/i; |
257 | |
116431d6 |
258 | my ($precision) = $self->dbh->selectrow_array(<<EOF, {}, $table->name, $col); |
afb4c5bc |
259 | SELECT character_maximum_length |
260 | FROM information_schema.columns |
261 | WHERE table_name = ? and column_name = ? |
262 | EOF |
263 | |
f80b0ea7 |
264 | $info->{size} = $precision if $precision; |
265 | |
266 | $info->{size} = 1 if (not $precision) && lc($data_type) eq 'bit'; |
afb4c5bc |
267 | } |
f80b0ea7 |
268 | elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $info->{size})) { |
d4d1a665 |
269 | $size =~ s/\s*//g; |
270 | |
271 | my ($scale, $precision) = split /,/, $size; |
272 | |
f80b0ea7 |
273 | $info->{size} = [ $precision, $scale ]; |
274 | } |
275 | elsif (lc($data_type) eq 'character varying') { |
276 | $info->{data_type} = 'varchar'; |
277 | |
8e030521 |
278 | if (not $info->{size}) { |
279 | $info->{data_type} = 'text'; |
280 | $info->{original}{data_type} = 'varchar'; |
281 | } |
f80b0ea7 |
282 | } |
283 | elsif (lc($data_type) eq 'character') { |
284 | $info->{data_type} = 'char'; |
d4d1a665 |
285 | } |
12333562 |
286 | else { |
287 | my ($typetype) = $self->schema->storage->dbh |
288 | ->selectrow_array(<<EOF, {}, $data_type); |
289 | SELECT typtype |
290 | FROM pg_catalog.pg_type |
291 | WHERE typname = ? |
292 | EOF |
c4a69b87 |
293 | if ($typetype && $typetype eq 'e') { |
463c86fb |
294 | # The following will extract a list of allowed values for the |
295 | # enum. |
9fc706c1 |
296 | my $order_column = $self->dbh->{pg_server_version} >= 90100 ? 'enumsortorder' : 'oid'; |
c4a69b87 |
297 | my $typevalues = $self->dbh |
463c86fb |
298 | ->selectall_arrayref(<<EOF, {}, $info->{data_type}); |
299 | SELECT e.enumlabel |
300 | FROM pg_catalog.pg_enum e |
301 | JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid |
302 | WHERE t.typname = ? |
9fc706c1 |
303 | ORDER BY e.$order_column |
463c86fb |
304 | EOF |
305 | |
306 | $info->{extra}{list} = [ map { $_->[0] } @$typevalues ]; |
307 | |
308 | # Store its original name in extra for SQLT to pick up. |
309 | $info->{extra}{custom_type_name} = $info->{data_type}; |
310 | |
12333562 |
311 | $info->{data_type} = 'enum'; |
958d5fcf |
312 | |
463c86fb |
313 | delete $info->{size}; |
12333562 |
314 | } |
315 | } |
316 | |
df956aad |
317 | # process SERIAL columns |
12b86f07 |
318 | if (ref($info->{default_value}) eq 'SCALAR' |
319 | && ${ $info->{default_value} } =~ /\bnextval\('([^:]+)'/i) { |
f80b0ea7 |
320 | $info->{is_auto_increment} = 1; |
321 | $info->{sequence} = $1; |
322 | delete $info->{default_value}; |
df956aad |
323 | } |
8e64075f |
324 | |
6e566cc4 |
325 | # alias now() to current_timestamp for deploying to other DBs |
45321eda |
326 | if ((eval { lc ${ $info->{default_value} } }||'') eq 'now()') { |
8a64178e |
327 | # do not use a ref to a constant, that breaks Data::Dump output |
f80b0ea7 |
328 | ${$info->{default_value}} = 'current_timestamp'; |
701cd3e3 |
329 | |
330 | my $now = 'now()'; |
331 | $info->{original}{default_value} = \$now; |
8e64075f |
332 | } |
96336646 |
333 | |
334 | # detect 0/1 for booleans and rewrite |
335 | if ($data_type =~ /^bool/i && exists $info->{default_value}) { |
336 | if ($info->{default_value} eq '0') { |
337 | my $false = 'false'; |
338 | $info->{default_value} = \$false; |
339 | } |
340 | elsif ($info->{default_value} eq '1') { |
341 | my $true = 'true'; |
342 | $info->{default_value} = \$true; |
343 | } |
344 | } |
a8df0345 |
345 | } |
346 | |
df956aad |
347 | return $result; |
78b7ccaa |
348 | } |
349 | |
996be9ee |
350 | =head1 SEE ALSO |
351 | |
352 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
353 | L<DBIx::Class::Schema::Loader::DBI> |
354 | |
be80bba7 |
355 | =head1 AUTHOR |
356 | |
9cc8e7e1 |
357 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
358 | |
359 | =head1 LICENSE |
360 | |
361 | This library is free software; you can redistribute it and/or modify it under |
362 | the same terms as Perl itself. |
363 | |
996be9ee |
364 | =cut |
365 | |
366 | 1; |