adding DBD::Pg and DBIx::DBSchema for 5.005. argh freebsd and solaris!

[freeside.git] / install / 5.005 / DBIx-DBSchema-0.23-5.005kludge / DBSchema / DBD / Pg.pm

diff --git a/install/5.005/DBIx-DBSchema-0.23-5.005kludge/DBSchema/DBD/Pg.pm b/install/5.005/DBIx-DBSchema-0.23-5.005kludge/DBSchema/DBD/Pg.pm
new file mode 100644 (file)
index 0000000..018b890
--- /dev/null
+++ b/install/5.005/DBIx-DBSchema-0.23-5.005kludge/DBSchema/DBD/Pg.pm
@@ -0,0 +1,175 @@
+package DBIx::DBSchema::DBD::Pg;
+
+use strict;
+use vars qw($VERSION @ISA %typemap);
+use DBD::Pg 1.22;
+use DBIx::DBSchema::DBD;
+
+$VERSION = '0.08';
+@ISA = qw(DBIx::DBSchema::DBD);
+
+%typemap = (
+  'BLOB' => 'BYTEA',
+  'LONG VARBINARY' => 'BYTEA',
+);
+
+=head1 NAME
+
+DBIx::DBSchema::DBD::Pg - PostgreSQL native driver for DBIx::DBSchema
+
+=head1 SYNOPSIS
+
+use DBI;
+use DBIx::DBSchema;
+
+$dbh = DBI->connect('dbi:Pg:dbname=database', 'user', 'pass');
+$schema = new_native DBIx::DBSchema $dbh;
+
+=head1 DESCRIPTION
+
+This module implements a PostgreSQL-native driver for DBIx::DBSchema.
+
+=cut
+
+sub columns {
+  my($proto, $dbh, $table) = @_;
+  my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+    SELECT a.attname, t.typname, a.attlen, a.atttypmod, a.attnotnull,
+           a.atthasdef, a.attnum
+    FROM pg_class c, pg_attribute a, pg_type t
+    WHERE c.relname = '$table'
+      AND a.attnum > 0 AND a.attrelid = c.oid AND a.atttypid = t.oid
+    ORDER BY a.attnum
+END
+  $sth->execute or die $sth->errstr;
+
+  map {
+
+    my $default = '';
+    if ( $_->{atthasdef} ) {
+      my $attnum = $_->{attnum};
+      my $d_sth = $dbh->prepare(<<END) or die $dbh->errstr;
+        SELECT substring(d.adsrc for 128) FROM pg_attrdef d, pg_class c
+        WHERE c.relname = '$table' AND c.oid = d.adrelid AND d.adnum = $attnum
+END
+      $d_sth->execute or die $d_sth->errstr;
+
+      $default = $d_sth->fetchrow_arrayref->[0];
+    };
+
+    my $len = '';
+    if ( $_->{attlen} == -1 && $_->{atttypmod} != -1 
+         && $_->{typname} ne 'text'                  ) {
+      $len = $_->{atttypmod} - 4;
+      if ( $_->{typname} eq 'numeric' ) {
+        $len = ($len >> 16). ','. ($len & 0xffff);
+      }
+    }
+
+    my $type = $_->{'typname'};
+    $type = 'char' if $type eq 'bpchar';
+
+    [
+      $_->{'attname'},
+      $type,
+      ! $_->{'attnotnull'},
+      $len,
+      $default,
+      ''  #local
+    ];
+
+  } @{ $sth->fetchall_arrayref({}) };
+}
+
+sub primary_key {
+  my($proto, $dbh, $table) = @_;
+  my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+    SELECT a.attname, a.attnum
+    FROM pg_class c, pg_attribute a, pg_type t
+    WHERE c.relname = '${table}_pkey'
+      AND a.attnum > 0 AND a.attrelid = c.oid AND a.atttypid = t.oid
+END
+  $sth->execute or die $sth->errstr;
+  my $row = $sth->fetchrow_hashref or return '';
+  $row->{'attname'};
+}
+
+sub unique {
+  my($proto, $dbh, $table) = @_;
+  my $gratuitous = { map { $_ => [ $proto->_index_fields($dbh, $_ ) ] }
+      grep { $proto->_is_unique($dbh, $_ ) }
+        $proto->_all_indices($dbh, $table)
+  };
+}
+
+sub index {
+  my($proto, $dbh, $table) = @_;
+  my $gratuitous = { map { $_ => [ $proto->_index_fields($dbh, $_ ) ] }
+      grep { ! $proto->_is_unique($dbh, $_ ) }
+        $proto->_all_indices($dbh, $table)
+  };
+}
+
+sub _all_indices {
+  my($proto, $dbh, $table) = @_;
+  my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+    SELECT c2.relname
+    FROM pg_class c, pg_class c2, pg_index i
+    WHERE c.relname = '$table' AND c.oid = i.indrelid AND i.indexrelid = c2.oid
+END
+  $sth->execute or die $sth->errstr;
+  map { $_->{'relname'} }
+    grep { $_->{'relname'} !~ /_pkey$/ }
+      @{ $sth->fetchall_arrayref({}) };
+}
+
+sub _index_fields {
+  my($proto, $dbh, $index) = @_;
+  my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+    SELECT a.attname, a.attnum
+    FROM pg_class c, pg_attribute a, pg_type t
+    WHERE c.relname = '$index'
+      AND a.attnum > 0 AND a.attrelid = c.oid AND a.atttypid = t.oid
+END
+  $sth->execute or die $sth->errstr;
+  map { $_->{'attname'} } @{ $sth->fetchall_arrayref({}) };
+}
+
+sub _is_unique {
+  my($proto, $dbh, $index) = @_;
+  my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+    SELECT i.indisunique
+    FROM pg_index i, pg_class c, pg_am a
+    WHERE i.indexrelid = c.oid AND c.relname = '$index' AND c.relam = a.oid
+END
+  $sth->execute or die $sth->errstr;
+  my $row = $sth->fetchrow_hashref or die 'guru meditation #420';
+  $row->{'indisunique'};
+}
+
+=head1 AUTHOR
+
+Ivan Kohler <ivan-dbix-dbschema@420.am>
+
+=head1 COPYRIGHT
+
+Copyright (c) 2000 Ivan Kohler
+Copyright (c) 2000 Mail Abuse Prevention System LLC
+All rights reserved.
+This program is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.
+
+=head1 BUGS
+
+Yes.
+
+columns doesn't return column default information.
+
+=head1 SEE ALSO
+
+L<DBIx::DBSchema>, L<DBIx::DBSchema::DBD>, L<DBI>, L<DBI::DBD>
+
+=cut 
+
+1;
+