Commit | Line | Data |
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1 | package DBIx::Class::Schema::Loader::DBI::Pg; |
2 | |
3 | use strict; |
4 | use warnings; |
41968729 |
5 | use base qw/ |
6 | DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault |
7 | DBIx::Class::Schema::Loader::DBI |
8 | /; |
942bd5e0 |
9 | use mro 'c3'; |
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10 | |
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11 | our $VERSION = '0.07010'; |
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12 | |
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13 | =head1 NAME |
14 | |
8f9d7ce5 |
15 | DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI |
16 | PostgreSQL Implementation. |
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17 | |
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18 | =head1 DESCRIPTION |
19 | |
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20 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
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21 | |
22 | =cut |
23 | |
24 | sub _setup { |
25 | my $self = shift; |
26 | |
27 | $self->next::method(@_); |
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28 | |
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29 | $self->{db_schema} ||= ['public']; |
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30 | |
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31 | if (not defined $self->preserve_case) { |
32 | $self->preserve_case(0); |
33 | } |
c930f78b |
34 | elsif ($self->preserve_case) { |
35 | $self->schema->storage->sql_maker->quote_char('"'); |
36 | $self->schema->storage->sql_maker->name_sep('.'); |
37 | } |
bc1cb85e |
38 | } |
fbcfebdd |
39 | |
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40 | sub _system_schemas { |
41 | my $self = shift; |
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42 | |
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43 | return ($self->next::method(@_), 'pg_catalog'); |
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44 | } |
45 | |
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46 | sub _table_uniq_info { |
47 | my ($self, $table) = @_; |
48 | |
fd589700 |
49 | # Use the default support if available |
50 | return $self->next::method($table) |
79fe0081 |
51 | if $DBD::Pg::VERSION >= 1.50; |
fd589700 |
52 | |
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53 | my @uniqs; |
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54 | |
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55 | # Most of the SQL here is mostly based on |
56 | # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from |
57 | # John Siracusa to use his superior SQL code :) |
58 | |
c4a69b87 |
59 | my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $self->dbh->prepare( |
5223f24a |
60 | q{SELECT attname FROM pg_catalog.pg_attribute |
61 | WHERE attrelid = ? AND attnum = ?} |
62 | ); |
63 | |
c4a69b87 |
64 | my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $self->dbh->prepare( |
5223f24a |
65 | q{SELECT x.indrelid, i.relname, x.indkey |
66 | FROM |
67 | pg_catalog.pg_index x |
68 | JOIN pg_catalog.pg_class c ON c.oid = x.indrelid |
69 | JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid |
70 | JOIN pg_catalog.pg_constraint con ON con.conname = i.relname |
71 | LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace |
72 | WHERE |
73 | x.indisunique = 't' AND |
74 | c.relkind = 'r' AND |
75 | i.relkind = 'i' AND |
76 | con.contype = 'u' AND |
77 | n.nspname = ? AND |
78 | c.relname = ?} |
79 | ); |
80 | |
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81 | $uniq_sth->execute($table->schema, $table); |
5223f24a |
82 | while(my $row = $uniq_sth->fetchrow_arrayref) { |
83 | my ($tableid, $indexname, $col_nums) = @$row; |
84 | $col_nums =~ s/^\s+//; |
85 | my @col_nums = split(/\s+/, $col_nums); |
86 | my @col_names; |
87 | |
88 | foreach (@col_nums) { |
89 | $attr_sth->execute($tableid, $_); |
90 | my $name_aref = $attr_sth->fetchrow_arrayref; |
91 | push(@col_names, $name_aref->[0]) if $name_aref; |
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92 | } |
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93 | |
94 | if(!@col_names) { |
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95 | warn "Failed to parse UNIQUE constraint $indexname on $table"; |
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96 | } |
97 | else { |
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98 | push(@uniqs, [ $indexname => \@col_names ]); |
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99 | } |
100 | } |
101 | |
102 | return \@uniqs; |
103 | } |
104 | |
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105 | sub _table_comment { |
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106 | my $self = shift; |
107 | my ($table) = @_; |
108 | |
109 | my $table_comment = $self->next::method(@_); |
110 | |
111 | return $table_comment if $table_comment; |
112 | |
113 | ($table_comment) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
114 | SELECT obj_description(oid) |
115 | FROM pg_class |
116 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
117 | EOF |
118 | |
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119 | return $table_comment |
120 | } |
121 | |
122 | |
123 | sub _column_comment { |
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124 | my $self = shift; |
125 | my ($table, $column_number, $column_name) = @_; |
126 | |
127 | my $column_comment = $self->next::method(@_); |
128 | |
129 | return $column_comment if $column_comment; |
130 | |
131 | my ($table_oid) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); |
132 | SELECT oid |
133 | FROM pg_class |
134 | WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) |
135 | EOF |
136 | |
137 | return $self->dbh->selectrow_array('SELECT col_description(?,?)', {}, $table_oid, $column_number); |
fbcfebdd |
138 | } |
139 | |
baff904e |
140 | # Make sure data_type's that don't need it don't have a 'size' column_info, and |
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141 | # set the correct precision for datetime and varbit types. |
baff904e |
142 | sub _columns_info_for { |
143 | my $self = shift; |
144 | my ($table) = @_; |
145 | |
146 | my $result = $self->next::method(@_); |
147 | |
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148 | while (my ($col, $info) = each %$result) { |
149 | my $data_type = $info->{data_type}; |
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150 | |
151 | # these types are fixed size |
7640ef4b |
152 | # XXX should this be a negative match? |
baff904e |
153 | if ($data_type =~ |
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154 | /^(?: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 |
155 | delete $info->{size}; |
baff904e |
156 | } |
afb4c5bc |
157 | # for datetime types, check if it has a precision or not |
43b982ea |
158 | elsif ($data_type =~ /^(?:interval|time|timestamp)\b/i) { |
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159 | if (lc($data_type) eq 'timestamp without time zone') { |
160 | $info->{data_type} = 'timestamp'; |
161 | } |
8e030521 |
162 | elsif (lc($data_type) eq 'time without time zone') { |
163 | $info->{data_type} = 'time'; |
164 | } |
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165 | |
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166 | my ($precision) = $self->schema->storage->dbh |
167 | ->selectrow_array(<<EOF, {}, $table, $col); |
168 | SELECT datetime_precision |
169 | FROM information_schema.columns |
170 | WHERE table_name = ? and column_name = ? |
171 | EOF |
172 | |
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173 | if ($data_type =~ /^time\b/i) { |
174 | if ((not $precision) || $precision !~ /^\d/) { |
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175 | delete $info->{size}; |
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176 | } |
177 | else { |
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178 | my ($integer_datetimes) = $self->dbh |
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179 | ->selectrow_array('show integer_datetimes'); |
180 | |
181 | my $max_precision = |
182 | $integer_datetimes =~ /^on\z/i ? 6 : 10; |
183 | |
184 | if ($precision == $max_precision) { |
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185 | delete $info->{size}; |
5f85388e |
186 | } |
187 | else { |
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188 | $info->{size} = $precision; |
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189 | } |
190 | } |
191 | } |
192 | elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { |
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193 | delete $info->{size}; |
baff904e |
194 | } |
195 | else { |
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196 | $info->{size} = $precision; |
baff904e |
197 | } |
198 | } |
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199 | elsif ($data_type =~ /^(?:bit(?: varying)?|varbit)\z/i) { |
200 | $info->{data_type} = 'varbit' if $data_type =~ /var/i; |
201 | |
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202 | my ($precision) = $self->dbh->selectrow_array(<<EOF, {}, $table, $col); |
afb4c5bc |
203 | SELECT character_maximum_length |
204 | FROM information_schema.columns |
205 | WHERE table_name = ? and column_name = ? |
206 | EOF |
207 | |
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208 | $info->{size} = $precision if $precision; |
209 | |
210 | $info->{size} = 1 if (not $precision) && lc($data_type) eq 'bit'; |
afb4c5bc |
211 | } |
f80b0ea7 |
212 | elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $info->{size})) { |
d4d1a665 |
213 | $size =~ s/\s*//g; |
214 | |
215 | my ($scale, $precision) = split /,/, $size; |
216 | |
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217 | $info->{size} = [ $precision, $scale ]; |
218 | } |
219 | elsif (lc($data_type) eq 'character varying') { |
220 | $info->{data_type} = 'varchar'; |
221 | |
8e030521 |
222 | if (not $info->{size}) { |
223 | $info->{data_type} = 'text'; |
224 | $info->{original}{data_type} = 'varchar'; |
225 | } |
f80b0ea7 |
226 | } |
227 | elsif (lc($data_type) eq 'character') { |
228 | $info->{data_type} = 'char'; |
d4d1a665 |
229 | } |
12333562 |
230 | else { |
231 | my ($typetype) = $self->schema->storage->dbh |
232 | ->selectrow_array(<<EOF, {}, $data_type); |
233 | SELECT typtype |
234 | FROM pg_catalog.pg_type |
235 | WHERE typname = ? |
236 | EOF |
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237 | if ($typetype && $typetype eq 'e') { |
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238 | # The following will extract a list of allowed values for the |
239 | # enum. |
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240 | my $typevalues = $self->dbh |
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241 | ->selectall_arrayref(<<EOF, {}, $info->{data_type}); |
242 | SELECT e.enumlabel |
243 | FROM pg_catalog.pg_enum e |
244 | JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid |
245 | WHERE t.typname = ? |
246 | EOF |
247 | |
248 | $info->{extra}{list} = [ map { $_->[0] } @$typevalues ]; |
249 | |
250 | # Store its original name in extra for SQLT to pick up. |
251 | $info->{extra}{custom_type_name} = $info->{data_type}; |
252 | |
12333562 |
253 | $info->{data_type} = 'enum'; |
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254 | |
255 | delete $info->{size}; |
12333562 |
256 | } |
257 | } |
258 | |
df956aad |
259 | # process SERIAL columns |
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260 | if (ref($info->{default_value}) eq 'SCALAR' |
261 | && ${ $info->{default_value} } =~ /\bnextval\('([^:]+)'/i) { |
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262 | $info->{is_auto_increment} = 1; |
263 | $info->{sequence} = $1; |
264 | delete $info->{default_value}; |
df956aad |
265 | } |
8e64075f |
266 | |
6e566cc4 |
267 | # alias now() to current_timestamp for deploying to other DBs |
45321eda |
268 | if ((eval { lc ${ $info->{default_value} } }||'') eq 'now()') { |
8a64178e |
269 | # do not use a ref to a constant, that breaks Data::Dump output |
f80b0ea7 |
270 | ${$info->{default_value}} = 'current_timestamp'; |
701cd3e3 |
271 | |
272 | my $now = 'now()'; |
273 | $info->{original}{default_value} = \$now; |
8e64075f |
274 | } |
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275 | |
276 | # detect 0/1 for booleans and rewrite |
277 | if ($data_type =~ /^bool/i && exists $info->{default_value}) { |
278 | if ($info->{default_value} eq '0') { |
279 | my $false = 'false'; |
280 | $info->{default_value} = \$false; |
281 | } |
282 | elsif ($info->{default_value} eq '1') { |
283 | my $true = 'true'; |
284 | $info->{default_value} = \$true; |
285 | } |
286 | } |
a8df0345 |
287 | } |
288 | |
df956aad |
289 | return $result; |
78b7ccaa |
290 | } |
291 | |
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292 | =head1 SEE ALSO |
293 | |
294 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
295 | L<DBIx::Class::Schema::Loader::DBI> |
296 | |
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297 | =head1 AUTHOR |
298 | |
9cc8e7e1 |
299 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
300 | |
301 | =head1 LICENSE |
302 | |
303 | This library is free software; you can redistribute it and/or modify it under |
304 | the same terms as Perl itself. |
305 | |
996be9ee |
306 | =cut |
307 | |
308 | 1; |