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 | |
e52d195f |
8 | our $VERSION = '0.07034_01'; |
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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>. |
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18 | |
19 | =cut |
20 | |
21 | sub _setup { |
22 | my $self = shift; |
23 | |
24 | $self->next::method(@_); |
bc1cb85e |
25 | |
c4a69b87 |
26 | $self->{db_schema} ||= ['public']; |
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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', |
46 | c => 'CASCADE,', |
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"); |
f839d33b |
55 | select q.constr_name, q.to_schema, q.to_table, from_cols.attname from_col, to_cols.attname to_col, |
56 | q.on_delete, q.on_update, q.is_deferrable |
57 | from (select constr.conname constr_name, to_ns.nspname to_schema, to_class.relname to_table, |
58 | unnest(constr.conkey) from_colnum, unnest(constr.confkey) to_colnum, |
59 | constr.confdeltype on_delete, constr.confupdtype on_update, |
60 | constr.condeferrable is_deferrable, |
61 | constr.conrelid conrelid, constr.confrelid confrelid |
62 | from pg_constraint constr |
63 | join pg_namespace from_ns on constr.connamespace = from_ns.oid |
64 | join pg_class from_class on constr.conrelid = from_class.oid and from_class.relnamespace = from_ns.oid |
65 | join pg_class to_class on constr.confrelid = to_class.oid |
66 | join pg_namespace to_ns on to_class.relnamespace = to_ns.oid |
67 | where from_ns.nspname = ? |
68 | and from_class.relname = ? |
69 | and from_class.relkind = 'r' |
70 | and constr.contype = 'f' |
71 | ) q |
72 | join pg_attribute from_cols on from_cols.attrelid = q.conrelid and from_cols.attnum = q.from_colnum |
73 | join pg_attribute to_cols on to_cols.attrelid = q.confrelid and to_cols.attnum = q.to_colnum; |
958d5fcf |
74 | EOF |
75 | |
f839d33b |
76 | $sth->execute($table->schema, $table->name); |
958d5fcf |
77 | |
78 | my %rels; |
79 | |
80 | while (my ($fk, $remote_schema, $remote_table, $col, $remote_col, |
81 | $delete_rule, $update_rule, $is_deferrable) = $sth->fetchrow_array) { |
82 | push @{ $rels{$fk}{local_columns} }, $self->_lc($col); |
83 | push @{ $rels{$fk}{remote_columns} }, $self->_lc($remote_col); |
84 | |
85 | $rels{$fk}{remote_table} = DBIx::Class::Schema::Loader::Table->new( |
86 | loader => $self, |
87 | name => $remote_table, |
88 | schema => $remote_schema, |
89 | ) unless exists $rels{$fk}{remote_table}; |
90 | |
b9762446 |
91 | $rels{$fk}{attrs} ||= { |
f839d33b |
92 | on_delete => $pg_rules{$delete_rule}, |
93 | on_update => $pg_rules{$update_rule}, |
94 | is_deferrable => $is_deferrable, |
b9762446 |
95 | }; |
958d5fcf |
96 | } |
97 | |
98 | return [ values %rels ]; |
99 | } |
100 | |
101 | |
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102 | sub _table_uniq_info { |
103 | my ($self, $table) = @_; |
104 | |
fd589700 |
105 | # Use the default support if available |
106 | return $self->next::method($table) |
79fe0081 |
107 | if $DBD::Pg::VERSION >= 1.50; |
fd589700 |
108 | |
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109 | my @uniqs; |
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110 | |
5223f24a |
111 | # Most of the SQL here is mostly based on |
112 | # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from |
113 | # John Siracusa to use his superior SQL code :) |
114 | |
c4a69b87 |
115 | my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $self->dbh->prepare( |
5223f24a |
116 | q{SELECT attname FROM pg_catalog.pg_attribute |
117 | WHERE attrelid = ? AND attnum = ?} |
118 | ); |
119 | |
c4a69b87 |
120 | my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $self->dbh->prepare( |
5223f24a |
121 | q{SELECT x.indrelid, i.relname, x.indkey |
122 | FROM |
123 | pg_catalog.pg_index x |
124 | JOIN pg_catalog.pg_class c ON c.oid = x.indrelid |
125 | JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid |
126 | JOIN pg_catalog.pg_constraint con ON con.conname = i.relname |
127 | LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace |
128 | WHERE |
129 | x.indisunique = 't' AND |
130 | c.relkind = 'r' AND |
131 | i.relkind = 'i' AND |
132 | con.contype = 'u' AND |
133 | n.nspname = ? AND |
134 | c.relname = ?} |
135 | ); |
136 | |
116431d6 |
137 | $uniq_sth->execute($table->schema, $table->name); |
5223f24a |
138 | while(my $row = $uniq_sth->fetchrow_arrayref) { |
139 | my ($tableid, $indexname, $col_nums) = @$row; |
140 | $col_nums =~ s/^\s+//; |
141 | my @col_nums = split(/\s+/, $col_nums); |
142 | my @col_names; |
143 | |
144 | foreach (@col_nums) { |
145 | $attr_sth->execute($tableid, $_); |
146 | my $name_aref = $attr_sth->fetchrow_arrayref; |
116431d6 |
147 | push(@col_names, $self->_lc($name_aref->[0])) if $name_aref; |
996be9ee |
148 | } |
5223f24a |
149 | |
150 | if(!@col_names) { |
8f9d7ce5 |
151 | warn "Failed to parse UNIQUE constraint $indexname on $table"; |
996be9ee |
152 | } |
153 | else { |
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); |
958d5fcf |
170 | SELECT obj_description(oid) |
171 | FROM pg_class |
c4a69b87 |
172 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
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 |
958d5fcf |
189 | FROM pg_class |
c4a69b87 |
190 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
191 | EOF |
192 | |
193 | return $self->dbh->selectrow_array('SELECT 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. |
c4a69b87 |
296 | my $typevalues = $self->dbh |
463c86fb |
297 | ->selectall_arrayref(<<EOF, {}, $info->{data_type}); |
298 | SELECT e.enumlabel |
299 | FROM pg_catalog.pg_enum e |
300 | JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid |
301 | WHERE t.typname = ? |
302 | EOF |
303 | |
304 | $info->{extra}{list} = [ map { $_->[0] } @$typevalues ]; |
305 | |
306 | # Store its original name in extra for SQLT to pick up. |
307 | $info->{extra}{custom_type_name} = $info->{data_type}; |
308 | |
12333562 |
309 | $info->{data_type} = 'enum'; |
958d5fcf |
310 | |
463c86fb |
311 | delete $info->{size}; |
12333562 |
312 | } |
313 | } |
314 | |
df956aad |
315 | # process SERIAL columns |
12b86f07 |
316 | if (ref($info->{default_value}) eq 'SCALAR' |
317 | && ${ $info->{default_value} } =~ /\bnextval\('([^:]+)'/i) { |
f80b0ea7 |
318 | $info->{is_auto_increment} = 1; |
319 | $info->{sequence} = $1; |
320 | delete $info->{default_value}; |
df956aad |
321 | } |
8e64075f |
322 | |
6e566cc4 |
323 | # alias now() to current_timestamp for deploying to other DBs |
45321eda |
324 | if ((eval { lc ${ $info->{default_value} } }||'') eq 'now()') { |
8a64178e |
325 | # do not use a ref to a constant, that breaks Data::Dump output |
f80b0ea7 |
326 | ${$info->{default_value}} = 'current_timestamp'; |
701cd3e3 |
327 | |
328 | my $now = 'now()'; |
329 | $info->{original}{default_value} = \$now; |
8e64075f |
330 | } |
96336646 |
331 | |
332 | # detect 0/1 for booleans and rewrite |
333 | if ($data_type =~ /^bool/i && exists $info->{default_value}) { |
334 | if ($info->{default_value} eq '0') { |
335 | my $false = 'false'; |
336 | $info->{default_value} = \$false; |
337 | } |
338 | elsif ($info->{default_value} eq '1') { |
339 | my $true = 'true'; |
340 | $info->{default_value} = \$true; |
341 | } |
342 | } |
a8df0345 |
343 | } |
344 | |
df956aad |
345 | return $result; |
78b7ccaa |
346 | } |
347 | |
996be9ee |
348 | =head1 SEE ALSO |
349 | |
350 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
351 | L<DBIx::Class::Schema::Loader::DBI> |
352 | |
be80bba7 |
353 | =head1 AUTHOR |
354 | |
9cc8e7e1 |
355 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
356 | |
357 | =head1 LICENSE |
358 | |
359 | This library is free software; you can redistribute it and/or modify it under |
360 | the same terms as Perl itself. |
361 | |
996be9ee |
362 | =cut |
363 | |
364 | 1; |