package SQL::Translator::Parser::DBI::PostgreSQL;
# -------------------------------------------------------------------
-# $Id: PostgreSQL.pm 1440 2009-01-17 16:31:57Z jawnsy $
-# -------------------------------------------------------------------
# Copyright (C) 2002-2009 SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
=head1 DESCRIPTION
-Uses DBI to query PostgreSQL system tables to determine schema structure.
+Uses DBI to query PostgreSQL system tables to determine schema structure.
=cut
use Data::Dumper;
use SQL::Translator::Schema::Constants;
-use vars qw[ $DEBUG @EXPORT_OK ];
+use vars qw[ $DEBUG $VERSION @EXPORT_OK ];
+$VERSION = '1.59';
$DEBUG = 0 unless defined $DEBUG;
+my $actions = {c => 'cascade',
+ r => 'restrict',
+ a => 'no action',
+ n => 'set null',
+ d => 'set default',
+ };
+
# -------------------------------------------------------------------
sub parse {
my ( $tr, $dbh ) = @_;
my $schema = $tr->schema;
my $column_select = $dbh->prepare(
- "SELECT a.attname, t.typname, a.attnum,a.atttypmod as length,
- a.attnotnull, a.atthasdef, d.adsrc
- FROM pg_type t,pg_attribute a
- LEFT JOIN pg_attrdef d ON (d.adrelid = a.attrelid AND a.attnum = d.adnum)
+ "SELECT a.attname, format_type(t.oid, a.atttypmod) as typname, a.attnum,
+ a.atttypmod as length, a.attnotnull, a.atthasdef, ad.adsrc,
+ d.description
+ FROM pg_type t, pg_attribute a
+ LEFT JOIN pg_attrdef ad ON (ad.adrelid = a.attrelid AND a.attnum = ad.adnum)
+ LEFT JOIN pg_description d ON (a.attrelid=d.objoid AND a.attnum=d.objsubid)
WHERE a.attrelid=? AND attnum>0
AND a.atttypid=t.oid
ORDER BY a.attnum"
- );
+ );
my $index_select = $dbh->prepare(
"SELECT oid, c.relname, i.indkey, i.indnatts, i.indisunique,
+ ARRAY(SELECT a.attname
+ FROM pg_attribute a
+ WHERE a.attrelid=i.indrelid AND a.attnum = ANY(i.indkey)
+ ) AS attname,
i.indisprimary, pg_get_indexdef(oid) AS create_string
FROM pg_class c,pg_index i
- WHERE c.relnamespace=2200 AND c.relkind='i'
+ WHERE c.relnamespace IN (SELECT oid FROM pg_namespace WHERE nspname='public') AND c.relkind='i'
AND c.oid=i.indexrelid AND i.indrelid=?"
);
my $table_select = $dbh->prepare(
- "SELECT oid,relname FROM pg_class WHERE relnamespace IN
+ "SELECT c.oid, c.relname, d.description
+ FROM pg_class c
+ LEFT JOIN pg_description d ON c.oid=d.objoid AND d.objsubid=0
+ WHERE relnamespace IN
(SELECT oid FROM pg_namespace WHERE nspname='public')
AND relkind='r';"
);
+
+ my $fk_select = $dbh->prepare(
+ q/
+SELECT r.conname,
+ c.relname,
+ d.relname AS frelname,
+ r.conkey,
+ ARRAY(SELECT column_name::varchar
+ FROM information_schema.columns
+ WHERE ordinal_position = ANY (r.conkey)
+ AND table_schema = n.nspname
+ AND table_name = c.relname ) AS fields,
+ r.confkey,
+ ARRAY(SELECT column_name::varchar
+ FROM information_schema.columns
+ WHERE ordinal_position = ANY (r.confkey)
+ AND table_schema = n.nspname
+ AND table_name = d.relname ) AS reference_fields,
+ r.confupdtype,
+ r.confdeltype,
+ r.confmatchtype
+
+FROM pg_catalog.pg_constraint r
+
+JOIN pg_catalog.pg_class c
+ ON c.oid = r.conrelid
+ AND r.contype = 'f'
+
+JOIN pg_catalog.pg_class d
+ ON d.oid = r.confrelid
+
+JOIN pg_catalog.pg_namespace n
+ ON n.oid = c.relnamespace
+
+WHERE pg_catalog.pg_table_is_visible(c.oid)
+ AND n.nspname = ?
+ AND c.relname = ?
+ORDER BY 1;
+ /) or die "Can't prepare: $@";
+
$table_select->execute();
while ( my $tablehash = $table_select->fetchrow_hashref ) {
my $table_name = $$tablehash{'relname'};
- my $table_oid = $$tablehash{'oid'};
-
+ my $table_oid = $$tablehash{'oid'};
my $table = $schema->add_table(
name => $table_name,
#what is type? type => $table_info->{TABLE_TYPE},
) || die $schema->error;
+ $table->comments($$tablehash{'description'}) if $$tablehash{'description'};
+
$column_select->execute($table_oid);
while (my $columnhash = $column_select->fetchrow_hashref ) {
- #data_type seems to not be populated; perhaps there needs to
+ #data_type seems to not be populated; perhaps there needs to
#be a mapping of query output to reserved constants in sqlt?
my $col = $table->add_field(
order => $$columnhash{'attnum'},
) || die $table->error;
- $col->{size} = [$$columnhash{'length'}] if $$columnhash{'length'}>0;
+ $col->{size} = [$$columnhash{'length'}]
+ if $$columnhash{'length'}>0 && $$columnhash{'length'}<=0xFFFF;
$col->{is_nullable} = $$columnhash{'attnotnull'} ? 0 : 1;
+ $col->comments($$columnhash{'description'}) if $$columnhash{'description'};
}
$index_select->execute($table_oid);
my @column_names = $table->field_names();
while (my $indexhash = $index_select->fetchrow_hashref ) {
#don't deal with function indexes at the moment
- next if ($$indexhash{'indkey'} eq ''
+ next if ($$indexhash{'indkey'} eq ''
or !defined($$indexhash{'indkey'}) );
my $type;
$table->get_field($col_name)->{is_primary_key}=1;
} elsif ($$indexhash{'indisunique'}) {
- $type = UNIQUE;
+ $type = UNIQUE;
} else {
$type = NORMAL;
}
+
my @column_ids = split /\s+/, $$indexhash{'indkey'};
- my @columns;
- foreach my $col (@column_ids) {
- push @columns, $column_names[($col - 1)];
- }
+ my @columns = split /\s+/, $$indexhash{'attname'};
$table->add_index(
name => $$indexhash{'relname'},
fields => \@columns,
) || die $table->error;
}
+
+ $fk_select->execute('public',$table_name) or die "Can't execute: $@";
+ my $fkeys = $fk_select->fetchall_arrayref({});
+ $DEBUG and print Dumper $fkeys;
+ for my $con (@$fkeys){
+ my $con_name = $con->{conname};
+ my $fields = $con->{fields};
+ my $reference_fields = $con->{reference_fields};
+ my $reference_table = $con->{frelname};
+ my $on_upd = $con->{confupdtype};
+ my $on_del = $con->{confdeltype};
+ $table->add_constraint(
+ name => $con_name,
+ type => 'foreign_key',
+ fields => $fields,
+ reference_fields => $reference_fields,
+ reference_table => $reference_table,
+ on_delete => $actions->{$on_upd},
+ on_update => $actions->{$on_del},
+ );
+ }
}
+
return 1;
}
=head1 AUTHOR
-Scott Cain E<lt>cain@cshl.eduE<gt>, previous author:
+Scott Cain E<lt>cain@cshl.eduE<gt>, previous author:
Paul Harrington E<lt>harringp@deshaw.comE<gt>.
=head1 SEE ALSO
projects / dbsrgits/SQL-Translator.git / blobdiff