1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
package DBIx::Class::DB;
use strict;
use warnings;
use base qw/DBIx::Class/;
use DBIx::Class::Schema;
use DBIx::Class::Storage::DBI;
use DBIx::Class::ClassResolver::PassThrough;
use DBI;
__PACKAGE__->load_components(qw/ResultSetProxy/);
{
no warnings 'once';
*dbi_commit = \&txn_commit;
*dbi_rollback = \&txn_rollback;
}
sub storage { shift->schema_instance(@_)->storage; }
=head1 NAME
DBIx::Class::DB - (DEPRECATED) classdata schema component
=head1 SYNOPSIS
package MyDB;
use base qw/DBIx::Class/;
__PACKAGE__->load_components('DB');
__PACKAGE__->connection('dbi:...', 'user', 'pass', \%attrs);
package MyDB::MyTable;
use base qw/MyDB/;
__PACKAGE__->load_components('Core'); # just load this in MyDB if it will
# always be there
...
=head1 DESCRIPTION
This class is designed to support the Class::DBI connection-as-classdata style
for DBIx::Class. You are *strongly* recommended to use a DBIx::Class::Schema
instead; DBIx::Class::DB will not undergo new development and will be moved
to being a CDBICompat-only component before 1.0.
=head1 METHODS
=head2 storage
Sets or gets the storage backend. Defaults to L<DBIx::Class::Storage::DBI>.
=head2 class_resolver
****DEPRECATED****
Sets or gets the class to use for resolving a class. Defaults to
L<DBIx::Class::ClassResolver::Passthrough>, which returns whatever you give
it. See resolve_class below.
=cut
__PACKAGE__->mk_classdata('class_resolver' =>
'DBIx::Class::ClassResolver::PassThrough');
=head2 connection
__PACKAGE__->connection($dsn, $user, $pass, $attrs);
Specifies the arguments that will be passed to DBI->connect(...) to
instantiate the class dbh when required.
=cut
sub connection {
my ($class, @info) = @_;
$class->setup_schema_instance unless $class->can('schema_instance');
$class->schema_instance->connection(@info);
}
=head2 setup_schema_instance
Creates a class method ->schema_instance which contains a DBIx::Class::Schema;
all class-method operations are proxies through to this object. If you don't
call ->connection in your DBIx::Class::DB subclass at load time you *must*
call ->setup_schema_instance in order for subclasses to find the schema and
register themselves with it.
=cut
sub setup_schema_instance {
my $class = shift;
my $schema = {};
bless $schema, 'DBIx::Class::Schema';
$class->mk_classdata('schema_instance' => $schema);
}
=head2 txn_begin
Begins a transaction (does nothing if AutoCommit is off).
=cut
sub txn_begin { shift->schema_instance->txn_begin(@_); }
=head2 txn_commit
Commits the current transaction.
=cut
sub txn_commit { shift->schema_instance->txn_commit(@_); }
=head2 txn_rollback
Rolls back the current transaction.
=cut
sub txn_rollback { shift->schema_instance->txn_rollback(@_); }
=head2 txn_do
Executes a block of code transactionally. If this code reference
throws an exception, the transaction is rolled back and the exception
is rethrown. See L<DBIx::Class::Schema/"txn_do"> for more details.
=cut
sub txn_do { shift->schema_instance->txn_do(@_); }
{
my $warn;
sub resolve_class {
warn "resolve_class deprecated as of 0.04999_02" unless $warn++;
return shift->class_resolver->class(@_);
}
}
=head2 resultset_instance
Returns an instance of a resultset for this class - effectively
mapping the L<Class::DBI> connection-as-classdata paradigm into the
native L<DBIx::Class::ResultSet> system.
=cut
sub resultset_instance {
my $class = ref $_[0] || $_[0];
my $source = $class->result_source_instance;
if ($source->result_class ne $class) {
$source = $source->new($source);
$source->result_class($class);
}
return $source->resultset;
}
=head2 resolve_class
****DEPRECATED****
See L<class_resolver>
=head2 dbi_commit
****DEPRECATED****
Alias for L<txn_commit>
=head2 dbi_rollback
****DEPRECATED****
Alias for L<txn_rollback>
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
=head1 LICENSE
You may distribute this code under the same terms as Perl itself.
=cut
1;
|
