use strict;
use warnings;
use base 'DBIx::Class::Schema::Loader::DBI';
+use Carp::Clan qw/^DBIx::Class/;
use Class::C3;
+our $VERSION = '0.04999_07';
+
=head1 NAME
-DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI Postgres Implementation.
+DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI
+PostgreSQL Implementation.
=head1 SYNOPSIS
package My::Schema;
use base qw/DBIx::Class::Schema::Loader/;
- __PACKAGE__->loader_options(
- relationships => 1,
- );
+ __PACKAGE__->loader_options( debug => 1 );
1;
sub _table_uniq_info {
my ($self, $table) = @_;
+ # Use the default support if available
+ return $self->next::method($table)
+ if $DBD::Pg::VERSION >= 1.50;
+
my @uniqs;
my $dbh = $self->schema->storage->dbh;
- my $sth = $dbh->prepare_cached(
- qq{SELECT conname,indexdef FROM pg_indexes JOIN pg_constraint }
- . qq{ON (pg_indexes.indexname = pg_constraint.conname) }
- . qq{WHERE schemaname=? and tablename=? and contype = 'u'}
- ,{}, 1);
-
- $sth->execute($self->db_schema, $table);
- while(my $constr = $sth->fetchrow_arrayref) {
- my $constr_name = $constr->[0];
- my $constr_def = $constr->[1];
- my @cols;
- if($constr_def =~ /\(\s*([^)]+)\)\s*$/) {
- my $cols_text = $1;
- $cols_text =~ s/\s+$//;
- @cols = map { lc } split(/\s*,\s*/, $cols_text);
- s/\Q$self->{_quoter}\E// for @cols;
+ # Most of the SQL here is mostly based on
+ # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from
+ # John Siracusa to use his superior SQL code :)
+
+ my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $dbh->prepare(
+ q{SELECT attname FROM pg_catalog.pg_attribute
+ WHERE attrelid = ? AND attnum = ?}
+ );
+
+ my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $dbh->prepare(
+ q{SELECT x.indrelid, i.relname, x.indkey
+ FROM
+ pg_catalog.pg_index x
+ JOIN pg_catalog.pg_class c ON c.oid = x.indrelid
+ JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid
+ JOIN pg_catalog.pg_constraint con ON con.conname = i.relname
+ LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
+ WHERE
+ x.indisunique = 't' AND
+ c.relkind = 'r' AND
+ i.relkind = 'i' AND
+ con.contype = 'u' AND
+ n.nspname = ? AND
+ c.relname = ?}
+ );
+
+ $uniq_sth->execute($self->db_schema, $table);
+ while(my $row = $uniq_sth->fetchrow_arrayref) {
+ my ($tableid, $indexname, $col_nums) = @$row;
+ $col_nums =~ s/^\s+//;
+ my @col_nums = split(/\s+/, $col_nums);
+ my @col_names;
+
+ foreach (@col_nums) {
+ $attr_sth->execute($tableid, $_);
+ my $name_aref = $attr_sth->fetchrow_arrayref;
+ push(@col_names, $name_aref->[0]) if $name_aref;
}
- if(!@cols) {
- warn "Failed to parse unique constraint $constr_name on $table";
+
+ if(!@col_names) {
+ warn "Failed to parse UNIQUE constraint $indexname on $table";
}
else {
- push(@uniqs, [ $constr_name => \@cols ]);
+ push(@uniqs, [ $indexname => \@col_names ]);
}
}
return \@uniqs;
}
+sub _extra_column_info {
+ my ($self, $info) = @_;
+ my %extra_info;
+
+ if ($info->{COLUMN_DEF} && $info->{COLUMN_DEF} =~ /\bnextval\(/i) {
+ $extra_info{is_auto_increment} = 1;
+ }
+
+ return \%extra_info;
+}
+
=head1 SEE ALSO
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,