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996be9ee |
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 | /; |
fa994d3c |
9 | use Carp::Clan qw/^DBIx::Class/; |
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10 | use Class::C3; |
11 | |
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12 | our $VERSION = '0.07000'; |
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13 | |
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14 | =head1 NAME |
15 | |
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16 | DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI |
17 | PostgreSQL Implementation. |
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18 | |
19 | =head1 SYNOPSIS |
20 | |
21 | package My::Schema; |
22 | use base qw/DBIx::Class::Schema::Loader/; |
23 | |
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24 | __PACKAGE__->loader_options( debug => 1 ); |
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25 | |
26 | 1; |
27 | |
28 | =head1 DESCRIPTION |
29 | |
30 | See L<DBIx::Class::Schema::Loader::Base>. |
31 | |
32 | =cut |
33 | |
34 | sub _setup { |
35 | my $self = shift; |
36 | |
37 | $self->next::method(@_); |
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38 | |
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39 | $self->{db_schema} ||= 'public'; |
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40 | |
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41 | if (not defined $self->preserve_case) { |
42 | $self->preserve_case(0); |
43 | } |
44 | } |
fbcfebdd |
45 | |
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46 | sub _table_uniq_info { |
47 | my ($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; |
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52 | |
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53 | my @uniqs; |
54 | my $dbh = $self->schema->storage->dbh; |
55 | |
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56 | # Most of the SQL here is mostly based on |
57 | # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from |
58 | # John Siracusa to use his superior SQL code :) |
59 | |
60 | my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $dbh->prepare( |
61 | q{SELECT attname FROM pg_catalog.pg_attribute |
62 | WHERE attrelid = ? AND attnum = ?} |
63 | ); |
64 | |
65 | my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $dbh->prepare( |
66 | q{SELECT x.indrelid, i.relname, x.indkey |
67 | FROM |
68 | pg_catalog.pg_index x |
69 | JOIN pg_catalog.pg_class c ON c.oid = x.indrelid |
70 | JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid |
71 | JOIN pg_catalog.pg_constraint con ON con.conname = i.relname |
72 | LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace |
73 | WHERE |
74 | x.indisunique = 't' AND |
75 | c.relkind = 'r' AND |
76 | i.relkind = 'i' AND |
77 | con.contype = 'u' AND |
78 | n.nspname = ? AND |
79 | c.relname = ?} |
80 | ); |
81 | |
82 | $uniq_sth->execute($self->db_schema, $table); |
83 | while(my $row = $uniq_sth->fetchrow_arrayref) { |
84 | my ($tableid, $indexname, $col_nums) = @$row; |
85 | $col_nums =~ s/^\s+//; |
86 | my @col_nums = split(/\s+/, $col_nums); |
87 | my @col_names; |
88 | |
89 | foreach (@col_nums) { |
90 | $attr_sth->execute($tableid, $_); |
91 | my $name_aref = $attr_sth->fetchrow_arrayref; |
92 | push(@col_names, $name_aref->[0]) if $name_aref; |
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93 | } |
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94 | |
95 | if(!@col_names) { |
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96 | warn "Failed to parse UNIQUE constraint $indexname on $table"; |
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97 | } |
98 | else { |
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99 | push(@uniqs, [ $indexname => \@col_names ]); |
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100 | } |
101 | } |
102 | |
103 | return \@uniqs; |
104 | } |
105 | |
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106 | sub _table_comment { |
107 | my ( $self, $table ) = @_; |
108 | my ($table_comment) = $self->schema->storage->dbh->selectrow_array( |
109 | q{SELECT obj_description(oid) |
110 | FROM pg_class |
111 | WHERE relname=? AND relnamespace=( |
112 | SELECT oid FROM pg_namespace WHERE nspname=?) |
113 | }, undef, $table, $self->db_schema |
114 | ); |
115 | return $table_comment |
116 | } |
117 | |
118 | |
119 | sub _column_comment { |
120 | my ( $self, $table, $column_number ) = @_; |
121 | my ($table_oid) = $self->schema->storage->dbh->selectrow_array( |
122 | q{SELECT oid |
123 | FROM pg_class |
124 | WHERE relname=? AND relnamespace=( |
125 | SELECT oid FROM pg_namespace WHERE nspname=?) |
126 | }, undef, $table, $self->db_schema |
127 | ); |
128 | return $self->schema->storage->dbh->selectrow_array('SELECT col_description(?,?)', undef, $table_oid, |
129 | $column_number ); |
130 | } |
131 | |
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132 | # Make sure data_type's that don't need it don't have a 'size' column_info, and |
afb4c5bc |
133 | # set the correct precision for datetime and varbit types. |
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134 | sub _columns_info_for { |
135 | my $self = shift; |
136 | my ($table) = @_; |
137 | |
138 | my $result = $self->next::method(@_); |
139 | |
140 | foreach my $col (keys %$result) { |
141 | my $data_type = $result->{$col}{data_type}; |
142 | |
143 | # these types are fixed size |
144 | if ($data_type =~ |
145 | /^(?:bigint|int8|bigserial|serial8|bit|boolean|bool|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) { |
146 | delete $result->{$col}{size}; |
147 | } |
afb4c5bc |
148 | # for datetime types, check if it has a precision or not |
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149 | elsif ($data_type =~ /^(?:interval|time|timestamp)\b/i) { |
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150 | my ($precision) = $self->schema->storage->dbh |
151 | ->selectrow_array(<<EOF, {}, $table, $col); |
152 | SELECT datetime_precision |
153 | FROM information_schema.columns |
154 | WHERE table_name = ? and column_name = ? |
155 | EOF |
156 | |
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157 | if ($data_type =~ /^time\b/i) { |
158 | if ((not $precision) || $precision !~ /^\d/) { |
159 | delete $result->{$col}{size}; |
160 | } |
161 | else { |
162 | my ($integer_datetimes) = $self->schema->storage->dbh |
163 | ->selectrow_array('show integer_datetimes'); |
164 | |
165 | my $max_precision = |
166 | $integer_datetimes =~ /^on\z/i ? 6 : 10; |
167 | |
168 | if ($precision == $max_precision) { |
169 | delete $result->{$col}{size}; |
170 | } |
171 | else { |
172 | $result->{$col}{size} = $precision; |
173 | } |
174 | } |
175 | } |
176 | elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { |
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177 | delete $result->{$col}{size}; |
178 | } |
179 | else { |
180 | $result->{$col}{size} = $precision; |
181 | } |
182 | } |
afb4c5bc |
183 | elsif ($data_type =~ /^(?:bit varying|varbit)\z/i) { |
184 | my ($precision) = $self->schema->storage->dbh |
185 | ->selectrow_array(<<EOF, {}, $table, $col); |
186 | SELECT character_maximum_length |
187 | FROM information_schema.columns |
188 | WHERE table_name = ? and column_name = ? |
189 | EOF |
190 | |
191 | $result->{$col}{size} = $precision; |
192 | } |
df956aad |
193 | elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $result->{$col}{size})) { |
d4d1a665 |
194 | $size =~ s/\s*//g; |
195 | |
196 | my ($scale, $precision) = split /,/, $size; |
197 | |
198 | $result->{$col}{size} = [ $precision, $scale ]; |
199 | } |
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200 | |
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201 | # process SERIAL columns |
202 | if (ref($result->{$col}{default_value}) eq 'SCALAR' && ${ $result->{$col}{default_value} } =~ /\bnextval\(['"](\w+)/i) { |
203 | $result->{$col}{is_auto_increment} = 1; |
204 | $result->{$col}{sequence} = $1; |
205 | delete $result->{$col}{default_value}; |
206 | } |
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207 | |
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208 | # alias now() to CURRENT_TIMESTAMP for deploying to other DBs |
209 | if (eval { lc ${ $result->{$col}{default_value} }||'' eq 'now()' }) { |
210 | # do not use a ref to a constant, that breaks Data::Dump output |
433ddfb1 |
211 | ${$result->{$col}{default_value}} = 'CURRENT_TIMESTAMP'; |
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212 | } |
a8df0345 |
213 | } |
214 | |
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215 | return $result; |
78b7ccaa |
216 | } |
217 | |
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218 | =head1 SEE ALSO |
219 | |
220 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
221 | L<DBIx::Class::Schema::Loader::DBI> |
222 | |
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223 | =head1 AUTHOR |
224 | |
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225 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
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226 | |
227 | =head1 LICENSE |
228 | |
229 | This library is free software; you can redistribute it and/or modify it under |
230 | the same terms as Perl itself. |
231 | |
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232 | =cut |
233 | |
234 | 1; |