CDBICompat happy again on rs branch
[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / TableInstance.pm
1 package DBIx::Class::TableInstance;
2
3 use strict;
4 use warnings;
5
6 use base qw/DBIx::Class/;
7 use DBIx::Class::Table;
8
9 __PACKAGE__->mk_classdata('table_alias'); # FIXME: Doesn't actually do anything yet!
10
11 __PACKAGE__->mk_classdata('_resultset_class' => 'DBIx::Class::ResultSet');
12
13 sub iterator_class { shift->table_instance->resultset_class(@_) }
14 sub resultset_class { shift->table_instance->resultset_class(@_) }
15 sub _table_name { shift->table_instance->name }
16
17 =head1 NAME 
18
19 DBIx::Class::TableInstance - provides a classdata table object and method proxies
20
21 =head1 SYNOPSIS
22
23   __PACKAGE__->table('foo');
24   __PACKAGE__->add_columns(qw/id bar baz/);
25   __PACKAGE__->set_primary_key('id');
26
27 =head1 METHODS
28
29 =cut
30
31 sub _mk_column_accessors {
32   my ($class, @cols) = @_;
33   $class->mk_group_accessors('column' => @cols);
34 }
35
36 =head2 add_columns
37
38   __PACKAGE__->add_columns(qw/col1 col2 col3/);
39
40 Adds columns to the current class and creates accessors for them.
41
42 =cut
43
44 sub add_columns {
45   my ($class, @cols) = @_;
46   $class->table_instance->add_columns(@cols);
47   $class->_mk_column_accessors(@cols);
48 }
49
50 sub resultset_instance {
51   my $class = shift;
52   my $table = $class->table_instance->new($class->table_instance);
53   $table->storage($class->storage);
54   $table->result_class($class);
55   return $table->resultset;
56 }
57
58 sub _select_columns {
59   return shift->table_instance->columns;
60 }
61
62 =head2 table
63
64   __PACKAGE__->table('tbl_name');
65   
66 Gets or sets the table name.
67
68 =cut
69
70 sub table {
71   my ($class, $table) = @_;
72   return $class->table_instance->name unless $table;
73   unless (ref $table) {
74     $table = DBIx::Class::Table->new(
75       {
76         name => $table,
77         result_class => $class,
78         #storage => $class->storage,
79       });
80     if ($class->can('table_instance')) {
81       $table->{_columns} = { %{$class->table_instance->{_columns}||{}} };
82     }
83   }
84   $class->mk_classdata('table_instance' => $table);
85 }
86
87 =head2 find_or_create
88
89   $class->find_or_create({ key => $val, ... });
90
91 Searches for a record matching the search condition; if it doesn't find one,
92 creates one and returns that instead.
93
94 =cut
95
96 sub find_or_create {
97   my $class    = shift;
98   my $hash     = ref $_[0] eq "HASH" ? shift: {@_};
99   my $exists = $class->find($hash);
100   return defined($exists) ? $exists : $class->create($hash);
101 }
102
103 =head2 has_column                                                                
104                                                                                 
105   if ($obj->has_column($col)) { ... }                                           
106                                                                                 
107 Returns 1 if the class has a column of this name, 0 otherwise.                  
108                                                                                 
109 =cut                                                                            
110
111 sub has_column {
112   my ($self, $column) = @_;
113   return $self->table_instance->has_column($column);
114 }
115
116 =head2 column_info                                                               
117                                                                                 
118   my $info = $obj->column_info($col);                                           
119                                                                                 
120 Returns the column metadata hashref for a column.
121                                                                                 
122 =cut                                                                            
123
124 sub column_info {
125   my ($self, $column) = @_;
126   return $self->table_instance->column_info($column);
127 }
128
129 =head2 columns                                                                   
130                                                                                 
131   my @column_names = $obj->columns;                                             
132                                                                                 
133 =cut                                                                            
134
135 sub columns {
136   return shift->table_instance->columns(@_);
137 }
138
139 1;
140
141 =head1 AUTHORS
142
143 Matt S. Trout <mst@shadowcatsystems.co.uk>
144
145 =head1 LICENSE
146
147 You may distribute this code under the same terms as Perl itself.
148
149 =cut
150