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1 | package SQL::Translator::Parser::DBI::Oracle; |
2 | |
3 | use O::Is; |
4 | # ------------------------------------------------------------------- |
5 | # $Id: Oracle.pm,v 1.1 2006-03-09 19:24:32 cahille Exp $ |
6 | # ------------------------------------------------------------------- |
7 | # Copyright (C) 2006 SQLFairy Authors |
8 | # |
9 | # This program is free software; you can redistribute it and/or |
10 | # modify it under the terms of the GNU General Public License as |
11 | # published by the Free Software Foundation; version 2. |
12 | # |
13 | # This program is distributed in the hope that it will be useful, but |
14 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | # General Public License for more details. |
17 | # |
18 | # You should have received a copy of the GNU General Public License |
19 | # along with this program; if not, write to the Free Software |
20 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
21 | # 02111-1307 USA |
22 | # ------------------------------------------------------------------- |
23 | |
24 | =head1 NAME |
25 | |
26 | SQL::Translator::Parser::DBI::Oracle - parser for DBD::Oracle |
27 | |
28 | =head1 SYNOPSIS |
29 | |
30 | See SQL::Translator::Parser::DBI. |
31 | |
32 | =head1 DESCRIPTION |
33 | |
34 | Uses DBI introspection methods to determine schema details. |
35 | |
36 | =cut |
37 | |
38 | use strict; |
39 | use warnings; |
40 | use DBI; |
41 | use SQL::Translator::Schema::Constants; |
42 | use SQL::Translator::Schema::Table; |
43 | use SQL::Translator::Schema::Field; |
44 | use SQL::Translator::Schema::Constraint; |
45 | |
46 | our $VERSION = sprintf "%d.%02d", q$Revision: 1.1 $ =~ /(\d+)\.(\d+)/; |
47 | |
48 | # ------------------------------------------------------------------- |
49 | sub parse { |
50 | my ( $tr, $dbh ) = @_; |
51 | |
52 | my $schema = $tr->schema; |
53 | |
54 | my $sth = $dbh->table_info(); |
55 | |
56 | while(my $table_info = $sth->fetchrow_hashref('NAME_uc')) { |
57 | next unless ($table_info->{TABLE_TYPE} eq 'TABLE'); |
58 | next if ($table_info->{TABLE_NAME} =~ /\$/); |
59 | |
60 | # create the table |
61 | |
62 | my $table = $schema->add_table( |
63 | name => $table_info->{TABLE_NAME}, |
64 | type => $table_info->{TABLE_TYPE}, |
65 | ); |
66 | |
67 | # add the fields (columns) for this table |
68 | |
69 | my $sth; |
70 | |
71 | $sth = $dbh->column_info( |
72 | undef, |
73 | $table_info->{TABLE_SCHEM}, |
74 | $table_info->{TABLE_NAME}, |
75 | '%' |
76 | ); |
77 | |
78 | while(my $column = $sth->fetchrow_hashref('NAME_uc')) { |
79 | my $f = $table->add_field( |
80 | name => $column->{COLUMN_NAME}, |
81 | default_value => $column->{COLUMN_DEF}, |
82 | data_type => $column->{TYPE_NAME}, |
83 | order => $column->{ORDINAL_POSITION}, |
84 | size => $column->{COLUMN_SIZE}, |
85 | ) || die $table->error; |
86 | |
87 | $f->is_nullable( $column->{NULLABLE} == 1 ); |
88 | } |
89 | |
90 | # add the primary key info |
91 | |
92 | $sth = $dbh->primary_key_info( |
93 | undef, |
94 | $table_info->{TABLE_SCHEM}, |
95 | $table_info->{TABLE_NAME}, |
96 | ); |
97 | |
98 | while(my $primary_key = $sth->fetchrow_hashref('NAME_uc')) { |
99 | my $f = $table->get_field( $primary_key->{COLUMN_NAME} ); |
100 | $f->is_primary_key(1); |
101 | } |
102 | |
103 | # add the foreign key info (constraints) |
104 | |
105 | $sth = $dbh->foreign_key_info( |
106 | undef, |
107 | undef, |
108 | undef, |
109 | undef, |
110 | $table_info->{TABLE_SCHEM}, |
111 | $table_info->{TABLE_NAME}, |
112 | ); |
113 | |
114 | my $cons = {}; |
115 | while(my $foreign_key = $sth->fetchrow_hashref('NAME_uc')) { |
116 | my $name = $foreign_key->{FK_NAME}; |
117 | $cons->{$name}->{reference_table} = $foreign_key->{UK_TABLE_NAME}; |
118 | push @{ $cons->{$name}->{fields} }, |
119 | $foreign_key->{FK_COLUMN_NAME}; |
120 | push @{ $cons->{$name}->{reference_fields} }, |
121 | $foreign_key->{UK_COLUMN_NAME}; |
122 | } |
123 | |
124 | for my $name ( keys %$cons ) { |
125 | my $c = $table->add_constraint( |
126 | type => FOREIGN_KEY, |
127 | name => $name, |
128 | fields => $cons->{$name}->{fields}, |
129 | reference_fields => $cons->{$name}->{reference_fields}, |
130 | reference_table => $cons->{$name}->{reference_table}, |
131 | ) || die $table->error; |
132 | } |
133 | } |
134 | |
135 | return 1; |
136 | } |
137 | |
138 | 1; |
139 | |
140 | =pod |
141 | |
142 | =head1 AUTHOR |
143 | |
144 | Earl Cahill E<lt>cpan@spack.netE<gt>. |
145 | |
146 | =head1 ACKNOWLEDGEMENT |
147 | |
148 | Initial revision of this module came almost entirely from work done by |
149 | Todd Hepler E<lt>thepler@freeshell.orgE<gt>. My changes were |
150 | quite minor (ensuring NAME_uc, changing a couple variable names, |
151 | skipping tables with a $ in them). |
152 | |
153 | Todd claimed his work to be an almost verbatim copy of |
154 | SQL::Translator::Parser::DBI::PostgreSQL revision 1.7 |
155 | |
156 | For me, the real work happens in DBD::Oracle and DBI, which, also |
157 | for me, that is the beauty of having introspection methods in DBI. |
158 | |
159 | =head1 SEE ALSO |
160 | |
161 | SQL::Translator, DBD::Oracle. |
162 | |
163 | =cut |