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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 | |
c34033b1 |
8 | our $VERSION = '0.07032'; |
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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 | |
958d5fcf |
43 | sub _table_fk_info { |
44 | my ($self, $table) = @_; |
45 | |
46 | my $sth = $self->dbh->prepare_cached(<<"EOF"); |
47 | SELECT rc.constraint_name, rc.unique_constraint_schema, uk_tc.table_name, |
48 | fk_kcu.column_name, uk_kcu.column_name, rc.delete_rule, rc.update_rule, |
49 | fk_tc.is_deferrable |
50 | FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS fk_tc |
51 | JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc |
52 | ON rc.constraint_name = fk_tc.constraint_name |
53 | AND rc.constraint_schema = fk_tc.table_schema |
54 | JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE fk_kcu |
55 | ON fk_kcu.constraint_name = fk_tc.constraint_name |
56 | AND fk_kcu.table_name = fk_tc.table_name |
57 | AND fk_kcu.table_schema = fk_tc.table_schema |
58 | JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS uk_tc |
59 | ON uk_tc.constraint_name = rc.unique_constraint_name |
60 | AND uk_tc.table_schema = rc.unique_constraint_schema |
61 | JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE uk_kcu |
62 | ON uk_kcu.constraint_name = rc.unique_constraint_name |
63 | AND uk_kcu.ordinal_position = fk_kcu.ordinal_position |
64 | AND uk_kcu.table_name = uk_tc.table_name |
65 | AND uk_kcu.table_schema = rc.unique_constraint_schema |
66 | WHERE fk_tc.table_name = ? |
67 | AND fk_tc.table_schema = ? |
68 | ORDER BY fk_kcu.ordinal_position |
69 | EOF |
70 | |
71 | $sth->execute($table->name, $table->schema); |
72 | |
73 | my %rels; |
74 | |
75 | while (my ($fk, $remote_schema, $remote_table, $col, $remote_col, |
76 | $delete_rule, $update_rule, $is_deferrable) = $sth->fetchrow_array) { |
77 | push @{ $rels{$fk}{local_columns} }, $self->_lc($col); |
78 | push @{ $rels{$fk}{remote_columns} }, $self->_lc($remote_col); |
79 | |
80 | $rels{$fk}{remote_table} = DBIx::Class::Schema::Loader::Table->new( |
81 | loader => $self, |
82 | name => $remote_table, |
83 | schema => $remote_schema, |
84 | ) unless exists $rels{$fk}{remote_table}; |
85 | |
b9762446 |
86 | $rels{$fk}{attrs} ||= { |
87 | on_delete => uc $delete_rule, |
88 | on_update => uc $update_rule, |
89 | is_deferrable => uc $is_deferrable eq 'YES' ? 1 : 0, |
90 | }; |
958d5fcf |
91 | } |
92 | |
93 | return [ values %rels ]; |
94 | } |
95 | |
96 | |
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97 | sub _table_uniq_info { |
98 | my ($self, $table) = @_; |
99 | |
fd589700 |
100 | # Use the default support if available |
101 | return $self->next::method($table) |
79fe0081 |
102 | if $DBD::Pg::VERSION >= 1.50; |
fd589700 |
103 | |
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104 | my @uniqs; |
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105 | |
5223f24a |
106 | # Most of the SQL here is mostly based on |
107 | # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from |
108 | # John Siracusa to use his superior SQL code :) |
109 | |
c4a69b87 |
110 | my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $self->dbh->prepare( |
5223f24a |
111 | q{SELECT attname FROM pg_catalog.pg_attribute |
112 | WHERE attrelid = ? AND attnum = ?} |
113 | ); |
114 | |
c4a69b87 |
115 | my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $self->dbh->prepare( |
5223f24a |
116 | q{SELECT x.indrelid, i.relname, x.indkey |
117 | FROM |
118 | pg_catalog.pg_index x |
119 | JOIN pg_catalog.pg_class c ON c.oid = x.indrelid |
120 | JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid |
121 | JOIN pg_catalog.pg_constraint con ON con.conname = i.relname |
122 | LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace |
123 | WHERE |
124 | x.indisunique = 't' AND |
125 | c.relkind = 'r' AND |
126 | i.relkind = 'i' AND |
127 | con.contype = 'u' AND |
128 | n.nspname = ? AND |
129 | c.relname = ?} |
130 | ); |
131 | |
116431d6 |
132 | $uniq_sth->execute($table->schema, $table->name); |
5223f24a |
133 | while(my $row = $uniq_sth->fetchrow_arrayref) { |
134 | my ($tableid, $indexname, $col_nums) = @$row; |
135 | $col_nums =~ s/^\s+//; |
136 | my @col_nums = split(/\s+/, $col_nums); |
137 | my @col_names; |
138 | |
139 | foreach (@col_nums) { |
140 | $attr_sth->execute($tableid, $_); |
141 | my $name_aref = $attr_sth->fetchrow_arrayref; |
116431d6 |
142 | push(@col_names, $self->_lc($name_aref->[0])) if $name_aref; |
996be9ee |
143 | } |
5223f24a |
144 | |
145 | if(!@col_names) { |
8f9d7ce5 |
146 | warn "Failed to parse UNIQUE constraint $indexname on $table"; |
996be9ee |
147 | } |
148 | else { |
5223f24a |
149 | push(@uniqs, [ $indexname => \@col_names ]); |
996be9ee |
150 | } |
151 | } |
152 | |
153 | return \@uniqs; |
154 | } |
155 | |
fbcfebdd |
156 | sub _table_comment { |
c4a69b87 |
157 | my $self = shift; |
158 | my ($table) = @_; |
159 | |
160 | my $table_comment = $self->next::method(@_); |
161 | |
162 | return $table_comment if $table_comment; |
163 | |
164 | ($table_comment) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
958d5fcf |
165 | SELECT obj_description(oid) |
166 | FROM pg_class |
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167 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
168 | EOF |
169 | |
fbcfebdd |
170 | return $table_comment |
171 | } |
172 | |
173 | |
174 | sub _column_comment { |
c4a69b87 |
175 | my $self = shift; |
176 | my ($table, $column_number, $column_name) = @_; |
177 | |
178 | my $column_comment = $self->next::method(@_); |
179 | |
180 | return $column_comment if $column_comment; |
181 | |
182 | my ($table_oid) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
183 | SELECT oid |
958d5fcf |
184 | FROM pg_class |
c4a69b87 |
185 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
186 | EOF |
187 | |
188 | return $self->dbh->selectrow_array('SELECT col_description(?,?)', {}, $table_oid, $column_number); |
fbcfebdd |
189 | } |
190 | |
baff904e |
191 | # Make sure data_type's that don't need it don't have a 'size' column_info, and |
afb4c5bc |
192 | # set the correct precision for datetime and varbit types. |
baff904e |
193 | sub _columns_info_for { |
194 | my $self = shift; |
195 | my ($table) = @_; |
196 | |
197 | my $result = $self->next::method(@_); |
198 | |
f80b0ea7 |
199 | while (my ($col, $info) = each %$result) { |
200 | my $data_type = $info->{data_type}; |
baff904e |
201 | |
202 | # these types are fixed size |
7640ef4b |
203 | # XXX should this be a negative match? |
baff904e |
204 | if ($data_type =~ |
96336646 |
205 | /^(?: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 |
206 | delete $info->{size}; |
baff904e |
207 | } |
afb4c5bc |
208 | # for datetime types, check if it has a precision or not |
43b982ea |
209 | elsif ($data_type =~ /^(?:interval|time|timestamp)\b/i) { |
f80b0ea7 |
210 | if (lc($data_type) eq 'timestamp without time zone') { |
211 | $info->{data_type} = 'timestamp'; |
212 | } |
8e030521 |
213 | elsif (lc($data_type) eq 'time without time zone') { |
214 | $info->{data_type} = 'time'; |
215 | } |
f80b0ea7 |
216 | |
baff904e |
217 | my ($precision) = $self->schema->storage->dbh |
116431d6 |
218 | ->selectrow_array(<<EOF, {}, $table->name, $col); |
baff904e |
219 | SELECT datetime_precision |
220 | FROM information_schema.columns |
221 | WHERE table_name = ? and column_name = ? |
222 | EOF |
223 | |
5f85388e |
224 | if ($data_type =~ /^time\b/i) { |
225 | if ((not $precision) || $precision !~ /^\d/) { |
f80b0ea7 |
226 | delete $info->{size}; |
5f85388e |
227 | } |
228 | else { |
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229 | my ($integer_datetimes) = $self->dbh |
5f85388e |
230 | ->selectrow_array('show integer_datetimes'); |
231 | |
232 | my $max_precision = |
233 | $integer_datetimes =~ /^on\z/i ? 6 : 10; |
234 | |
235 | if ($precision == $max_precision) { |
f80b0ea7 |
236 | delete $info->{size}; |
5f85388e |
237 | } |
238 | else { |
f80b0ea7 |
239 | $info->{size} = $precision; |
5f85388e |
240 | } |
241 | } |
242 | } |
243 | elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { |
f80b0ea7 |
244 | delete $info->{size}; |
baff904e |
245 | } |
246 | else { |
f80b0ea7 |
247 | $info->{size} = $precision; |
baff904e |
248 | } |
249 | } |
f80b0ea7 |
250 | elsif ($data_type =~ /^(?:bit(?: varying)?|varbit)\z/i) { |
251 | $info->{data_type} = 'varbit' if $data_type =~ /var/i; |
252 | |
116431d6 |
253 | my ($precision) = $self->dbh->selectrow_array(<<EOF, {}, $table->name, $col); |
afb4c5bc |
254 | SELECT character_maximum_length |
255 | FROM information_schema.columns |
256 | WHERE table_name = ? and column_name = ? |
257 | EOF |
258 | |
f80b0ea7 |
259 | $info->{size} = $precision if $precision; |
260 | |
261 | $info->{size} = 1 if (not $precision) && lc($data_type) eq 'bit'; |
afb4c5bc |
262 | } |
f80b0ea7 |
263 | elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $info->{size})) { |
d4d1a665 |
264 | $size =~ s/\s*//g; |
265 | |
266 | my ($scale, $precision) = split /,/, $size; |
267 | |
f80b0ea7 |
268 | $info->{size} = [ $precision, $scale ]; |
269 | } |
270 | elsif (lc($data_type) eq 'character varying') { |
271 | $info->{data_type} = 'varchar'; |
272 | |
8e030521 |
273 | if (not $info->{size}) { |
274 | $info->{data_type} = 'text'; |
275 | $info->{original}{data_type} = 'varchar'; |
276 | } |
f80b0ea7 |
277 | } |
278 | elsif (lc($data_type) eq 'character') { |
279 | $info->{data_type} = 'char'; |
d4d1a665 |
280 | } |
12333562 |
281 | else { |
282 | my ($typetype) = $self->schema->storage->dbh |
283 | ->selectrow_array(<<EOF, {}, $data_type); |
284 | SELECT typtype |
285 | FROM pg_catalog.pg_type |
286 | WHERE typname = ? |
287 | EOF |
c4a69b87 |
288 | if ($typetype && $typetype eq 'e') { |
463c86fb |
289 | # The following will extract a list of allowed values for the |
290 | # enum. |
c4a69b87 |
291 | my $typevalues = $self->dbh |
463c86fb |
292 | ->selectall_arrayref(<<EOF, {}, $info->{data_type}); |
293 | SELECT e.enumlabel |
294 | FROM pg_catalog.pg_enum e |
295 | JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid |
296 | WHERE t.typname = ? |
297 | EOF |
298 | |
299 | $info->{extra}{list} = [ map { $_->[0] } @$typevalues ]; |
300 | |
301 | # Store its original name in extra for SQLT to pick up. |
302 | $info->{extra}{custom_type_name} = $info->{data_type}; |
303 | |
12333562 |
304 | $info->{data_type} = 'enum'; |
958d5fcf |
305 | |
463c86fb |
306 | delete $info->{size}; |
12333562 |
307 | } |
308 | } |
309 | |
df956aad |
310 | # process SERIAL columns |
12b86f07 |
311 | if (ref($info->{default_value}) eq 'SCALAR' |
312 | && ${ $info->{default_value} } =~ /\bnextval\('([^:]+)'/i) { |
f80b0ea7 |
313 | $info->{is_auto_increment} = 1; |
314 | $info->{sequence} = $1; |
315 | delete $info->{default_value}; |
df956aad |
316 | } |
8e64075f |
317 | |
6e566cc4 |
318 | # alias now() to current_timestamp for deploying to other DBs |
45321eda |
319 | if ((eval { lc ${ $info->{default_value} } }||'') eq 'now()') { |
8a64178e |
320 | # do not use a ref to a constant, that breaks Data::Dump output |
f80b0ea7 |
321 | ${$info->{default_value}} = 'current_timestamp'; |
701cd3e3 |
322 | |
323 | my $now = 'now()'; |
324 | $info->{original}{default_value} = \$now; |
8e64075f |
325 | } |
96336646 |
326 | |
327 | # detect 0/1 for booleans and rewrite |
328 | if ($data_type =~ /^bool/i && exists $info->{default_value}) { |
329 | if ($info->{default_value} eq '0') { |
330 | my $false = 'false'; |
331 | $info->{default_value} = \$false; |
332 | } |
333 | elsif ($info->{default_value} eq '1') { |
334 | my $true = 'true'; |
335 | $info->{default_value} = \$true; |
336 | } |
337 | } |
a8df0345 |
338 | } |
339 | |
df956aad |
340 | return $result; |
78b7ccaa |
341 | } |
342 | |
996be9ee |
343 | =head1 SEE ALSO |
344 | |
345 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
346 | L<DBIx::Class::Schema::Loader::DBI> |
347 | |
be80bba7 |
348 | =head1 AUTHOR |
349 | |
9cc8e7e1 |
350 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
351 | |
352 | =head1 LICENSE |
353 | |
354 | This library is free software; you can redistribute it and/or modify it under |
355 | the same terms as Perl itself. |
356 | |
996be9ee |
357 | =cut |
358 | |
359 | 1; |