1Rose::DB::Object::Std::UMseetradCaotnat(r3i)buted Perl DRoocsuem:e:nDtBa:t:iOobnject::Std::Metadata(3)
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3
4

NAME

6       Rose::DB::Object::Std::Metadata - Standardized database object
7       metadata.
8

SYNOPSIS

10         use Rose::DB::Object::Std::Metadata;
11
12         $meta = Rose::DB::Object::Std::Metadata->new(class => 'Product');
13         # ...or...
14         # $meta = Rose::DB::Object::Std::Metadata->for_class('Product');
15
16         $meta->table('products');
17
18         $meta->columns
19         (
20           id          => { type => 'int', primary_key => 1 },
21           name        => { type => 'varchar', length => 255 },
22           description => { type => 'text' },
23           category_id => { type => 'int' },
24
25           status =>
26           {
27             type      => 'varchar',
28             check_in  => [ 'active', 'inactive' ],
29             default   => 'inactive',
30           },
31
32           start_date  => { type => 'datetime' },
33           end_date    => { type => 'datetime' },
34
35           date_created     => { type => 'timestamp', default => 'now' },
36           last_modified    => { type => 'timestamp', default => 'now' },
37         );
38
39         $meta->add_unique_key('name');
40
41         $meta->foreign_keys
42         (
43           category =>
44           {
45             class       => 'Category',
46             key_columns =>
47             {
48               category_id => 'id',
49             }
50           },
51         );
52
53         ...
54

DESCRIPTION

56       "Rose::DB::Object::Std::Metadata" is a subclass of
57       Rose::DB::Object::Metadata that is designed to serve the needs of
58       Rose::DB::Object::Std objects.  See the Rose::DB::Object::Std
59       documentations for information on what differentiates it from
60       Rose::DB::Object.
61
62       Only the methods that are overridden are documented here.  See the
63       Rose::DB::Object::Metadata documentation for the rest.
64

OBJECT METHODS

66       add_primary_key_column COLUMN
67           This method is an alias for the "add_primary_key_columns()" method.
68
69       add_primary_key_columns COLUMNS
70           Since Rose::DB::Object::Std objects must have a single primary key
71           column named "id", calling this method with a COLUMNS argument of
72           anything other than the column name "id" or a reference to an array
73           containing the column name "id" will cause a fatal error.
74
75           In general, you do not need to use this method at all since the
76           "primary_key_columns()" method is hard-coded to always return "id".
77
78       initialize [ARGS]
79           This method does the same thing as the Rose::DB::Object::Metadata
80           method of the same name, with one exception.  If there is no column
81           named "id" in the list of columns, a scalar primary key column
82           named "id" is added to the column list.  Then initialization
83           proceeds as usual.
84
85       primary_key_columns
86           Always returns the column name "id" (in list context) or a
87           reference to an array containing the column name "id" (in scalar
88           context).
89

AUTHOR

91       John C. Siracusa (siracusa@gmail.com)
92

LICENSE

94       Copyright (c) 2010 by John C. Siracusa.  All rights reserved.  This
95       program is free software; you can redistribute it and/or modify it
96       under the same terms as Perl itself.
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100perl v5.30.2                      2020-04-06Rose::DB::Object::Std::Metadata(3)
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