1 package DBIx::Class::DB;
6 use base qw/DBIx::Class/;
7 use DBIx::Class::Schema;
8 use DBIx::Class::Storage::DBI;
9 use DBIx::Class::ClassResolver::PassThrough;
13 unless ($INC{"DBIx/Class/CDBICompat.pm"}) {
14 warn "IMPORTANT: DBIx::Class::DB is DEPRECATED AND *WILL* BE REMOVED. DO NOT USE.\n";
17 __PACKAGE__->load_components(qw/ResultSetProxy/);
21 *dbi_commit = \&txn_commit;
22 *dbi_rollback = \&txn_rollback;
25 sub storage { shift->schema_instance(@_)->storage; }
29 DBIx::Class::DB - (DEPRECATED) classdata schema component
33 This class is designed to support the Class::DBI connection-as-classdata style
34 for DBIx::Class. You are *strongly* recommended to use a DBIx::Class::Schema
35 instead; DBIx::Class::DB will not undergo new development and will be moved
36 to being a CDBICompat-only component before 1.0. In order to discourage further
37 use, documentation has been removed as of 0.08000
39 =begin HIDE_BECAUSE_THIS_CLASS_IS_DEPRECATED
45 Sets or gets the storage backend. Defaults to L<DBIx::Class::Storage::DBI>.
51 Sets or gets the class to use for resolving a class. Defaults to
52 L<DBIx::Class::ClassResolver::Passthrough>, which returns whatever you give
53 it. See resolve_class below.
57 __PACKAGE__->mk_classdata('class_resolver' =>
58 'DBIx::Class::ClassResolver::PassThrough');
62 __PACKAGE__->connection($dsn, $user, $pass, $attrs);
64 Specifies the arguments that will be passed to DBI->connect(...) to
65 instantiate the class dbh when required.
70 my ($class, @info) = @_;
71 $class->setup_schema_instance unless $class->can('schema_instance');
72 $class->schema_instance->connection(@info);
75 =head2 setup_schema_instance
77 Creates a class method ->schema_instance which contains a DBIx::Class::Schema;
78 all class-method operations are proxies through to this object. If you don't
79 call ->connection in your DBIx::Class::DB subclass at load time you *must*
80 call ->setup_schema_instance in order for subclasses to find the schema and
81 register themselves with it.
85 sub setup_schema_instance {
88 bless $schema, 'DBIx::Class::Schema';
89 $class->mk_classdata('schema_instance' => $schema);
94 Begins a transaction (does nothing if AutoCommit is off).
98 sub txn_begin { shift->schema_instance->txn_begin(@_); }
102 Commits the current transaction.
106 sub txn_commit { shift->schema_instance->txn_commit(@_); }
110 Rolls back the current transaction.
114 sub txn_rollback { shift->schema_instance->txn_rollback(@_); }
118 Executes a block of code transactionally. If this code reference
119 throws an exception, the transaction is rolled back and the exception
120 is rethrown. See L<DBIx::Class::Schema/"txn_do"> for more details.
124 sub txn_do { shift->schema_instance->txn_do(@_); }
130 warn "resolve_class deprecated as of 0.04999_02" unless $warn++;
131 return shift->class_resolver->class(@_);
135 =head2 resultset_instance
137 Returns an instance of a resultset for this class - effectively
138 mapping the L<Class::DBI> connection-as-classdata paradigm into the
139 native L<DBIx::Class::ResultSet> system.
143 sub resultset_instance {
144 $_[0]->result_source_instance->resultset
147 =head2 result_source_instance
149 Returns an instance of the result source for this class
153 __PACKAGE__->mk_classdata('_result_source_instance' => []);
155 # Yep. this is horrific. Basically what's happening here is that
156 # (with good reason) DBIx::Class::Schema copies the result source for
157 # registration. Because we have a retarded setup order forced on us we need
158 # to actually make our ->result_source_instance -be- the source used, and we
159 # need to get the source name and schema into ourselves. So this makes it
162 sub _maybe_attach_source_to_schema {
163 my ($class, $source) = @_;
164 if (my $meth = $class->can('schema_instance')) {
165 if (my $schema = $class->$meth) {
166 $schema->register_class($class, $class);
167 my $new_source = $schema->source($class);
168 %$source = %$new_source;
169 $schema->source_registrations->{$class} = $source;
174 sub result_source_instance {
176 $class = ref $class || $class;
180 $class->_result_source_instance([$source, $class]);
181 $class->_maybe_attach_source_to_schema($source);
185 my($source, $result_class) = @{$class->_result_source_instance};
186 return unless Scalar::Util::blessed($source);
188 if ($result_class ne $class) { # new class
189 # Give this new class it's own source and register it.
190 $source = $source->new({
192 source_name => $class,
193 result_class => $class
195 $class->_result_source_instance([$source, $class]);
196 $class->_maybe_attach_source_to_schema($source);
205 See L<class_resolver>
211 Alias for L<txn_commit>
217 Alias for L<txn_rollback>
219 =end HIDE_BECAUSE_THIS_CLASS_IS_DEPRECATED
223 Matt S. Trout <mst@shadowcatsystems.co.uk>
227 You may distribute this code under the same terms as Perl itself.