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/ResultSetInstance/);
+__PACKAGE__->load_components(qw/ResultSetProxy/);
-*dbi_commit = \&txn_commit;
-*dbi_rollback = \&txn_rollback;
+{
+ no warnings 'once';
+ *dbi_commit = \&txn_commit;
+ *dbi_rollback = \&txn_rollback;
+}
sub storage { shift->schema_instance(@_)->storage; }
sub resultset_instance {
- my $class = shift;
- my $source = $class->result_source;
+ 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);
=head1 NAME
-DBIx::Class::DB - Simple DBIx::Class Database connection by class inheritance
+DBIx::Class::DB - Non-recommended classdata schema component
=head1 SYNOPSIS
package MyDB::MyTable;
use base qw/MyDB/;
- __PACKAGE__->load_components('Core'); # just load this in MyDB if it will always be there
+ __PACKAGE__->load_components('Core'); # just load this in MyDB if it will
+ # always be there
...
=head1 DESCRIPTION
-This class provides a simple way of specifying a database connection.
+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 continue to be supported but new development
+will be focused on Schema-based DBIx::Class setups.
=head1 METHODS
Sets or gets the storage backend. Defaults to L<DBIx::Class::Storage::DBI>.
-=head2 class_resolver ****DEPRECATED****
+=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
=cut
__PACKAGE__->mk_classdata('class_resolver' =>
- 'DBIx::Class::ClassResolver::PassThrough');
+ 'DBIx::Class::ClassResolver::PassThrough');
=head2 connection
sub connection {
my ($class, @info) = @_;
- my $storage = DBIx::Class::Storage::DBI->new;
- $storage->connect_info(\@info);
- my $schema = bless({ storage => $storage }, 'DBIx::Class::Schema');
+ $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({}, 'DBIx::Class::Schema');
$class->mk_classdata('schema_instance' => $schema);
}
=cut
-sub txn_begin { $_[0]->storage->txn_begin }
+sub txn_begin { shift->schema_instance->txn_begin(@_); }
=head2 txn_commit
=cut
-sub txn_commit { $_[0]->storage->txn_commit }
+sub txn_commit { shift->schema_instance->txn_commit(@_); }
=head2 txn_rollback
=cut
-sub txn_rollback { $_[0]->storage->txn_rollback }
+sub txn_rollback { shift->schema_instance->txn_rollback(@_); }
+
+=head2 txn_do
-sub resolve_class {
- warn "resolve_class deprecated as of 0.04999_02";
- return shift->class_resolver->class(@_);
+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(@_);
+ }
}
1;