This module does not actually use any DBD::Pg calls, just DBI. However, the DBI calls...
[dbsrgits/SQL-Translator.git] / lib / SQL / Translator / Parser / DBI / PostgreSQL.pm
1 package SQL::Translator::Parser::DBI::PostgreSQL;
2
3 # -------------------------------------------------------------------
4 # $Id: PostgreSQL.pm,v 1.4 2003-10-15 19:56:20 phrrngtn Exp $
5 # -------------------------------------------------------------------
6 # Copyright (C) 2003 Paul Harrington <harringp@deshaw.com>.
7 #
8 # This program is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU General Public License as
10 # published by the Free Software Foundation; version 2.
11 #
12 # This program is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 # General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # 02111-1307  USA
21 # -------------------------------------------------------------------
22
23 =head1 NAME
24
25 SQL::Translator::Parser::DBI::PostgreSQL - parser for DBD::Pg
26
27 =head1 SYNOPSIS
28
29 See SQL::Translator::Parser::DBI.
30
31 =head1 DESCRIPTION
32
33 Uses DBD::Pg 1.31 catalog methods to determine schema structure.
34
35 =cut
36
37 use strict;
38 use DBI;
39 use Data::Dumper;
40 use SQL::Translator::Schema::Constants;
41
42 use vars qw[ $DEBUG $VERSION @EXPORT_OK ];
43 $VERSION = sprintf "%d.%02d", q$Revision: 1.4 $ =~ /(\d+)\.(\d+)/;
44 $DEBUG   = 0 unless defined $DEBUG;
45
46 # -------------------------------------------------------------------
47 sub parse {
48     my ( $tr, $dbh ) = @_;
49
50     my $schema = $tr->schema;
51
52     my ($sth, @tables, $columns);
53     my $stuff;
54
55     warn "DBD:Pg $DBD::Pg::VERSION is not likely to produce anything useful. Upgrade to 1.31 or better if available."
56         unless ($DBD::Pg::VERSION ge '1.31');
57
58     if ($dbh->{FetchHashKeyName} ne 'NAME_uc') {
59         $dbh->{FetchHashKeyName} = 'NAME_uc';
60     }
61
62     if ($dbh->{ChopBlanks} != 1) {
63         $dbh->{ChopBlanks} = 1;
64     }
65
66     $sth = $dbh->column_info();
67     foreach my $c (@{$sth->fetchall_arrayref({})}) {
68         $columns
69             ->{$c->{TABLE_SCHEM}}
70                 ->{$c->{TABLE_NAME}}
71                     ->{columns}
72                         ->{$c->{COLUMN_NAME}}= $c;
73     }
74
75     $sth = $dbh->table_info();
76
77     @tables   = @{$sth->fetchall_arrayref({})};
78
79     foreach my $table_info (@tables) {
80         next
81             unless (defined($table_info->{TABLE_TYPE}));
82
83         if ($table_info->{TABLE_TYPE} eq 'TABLE'&&
84             $table_info->{TABLE_SCHEM} eq 'public') {
85             my $table = $schema->add_table(
86                                            name => $table_info->{TABLE_NAME},
87                                            type => $table_info->{TABLE_TYPE},
88                                           ) || die $schema->error;
89
90
91             my $cols =
92                 $columns->{$table_info->{TABLE_SCHEM}}
93                         ->{$table_info->{TABLE_NAME}}
94                             ->{columns};
95
96             foreach my $c (values %{$cols}) {
97                 my $f = $table->add_field(
98                                           name        => $c->{COLUMN_NAME},
99                                           data_type   => $c->{TYPE_NAME},
100                                           order       => $c->{ORDINAL_POSITION},
101                                           size        => $c->{COLUMN_SIZE},
102                                          ) || die $table->error;
103
104                 $f->is_nullable(1)
105                     if ($c->{NULLABLE} == 1);
106             }
107         }
108     }
109
110     return 1;
111 }
112
113 1;
114
115 # -------------------------------------------------------------------
116 # Time is a waste of money.
117 # Oscar Wilde
118 # -------------------------------------------------------------------
119
120 =pod
121
122 =head1 AUTHOR
123
124 Paul Harrington E<lt>harringp@deshaw.comE<gt>.
125
126 =head1 SEE ALSO
127
128 SQL::Translator, DBD::Pg.
129
130 =cut