X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FDB.pm;h=e00237774152e789b3bad9b24568b5d2faa4cceb;hb=c216324aa4b0f79ba056fbe74adbd735421e378a;hp=7d1b5ca5817f7cb1abb5057b1fd21278b32f10de;hpb=076652e8bd5edaaf4c6c6a65f631bf529bbff41c;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/DB.pm b/lib/DBIx/Class/DB.pm
index 7d1b5ca..e002377 100644
--- a/lib/DBIx/Class/DB.pm
+++ b/lib/DBIx/Class/DB.pm
@@ -1,56 +1,62 @@
 package DBIx::Class::DB;
 
-use base qw/Class::Data::Inheritable/;
+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;
 
-=head1 NAME 
-
-DBIx::Class::DB - Simple DBIx::Class Database connection by class inheritance
-
-=head1 SYNOPSIS
-
-  package MyDB;
+unless ($INC{"DBIx/Class/CDBICompat.pm"}) {
+  warn "IMPORTANT: DBIx::Class::DB is DEPRECATED AND *WILL* BE REMOVED. DO NOT USE.\n";
+}
 
-  use base qw/DBIx::Class/;
-  __PACKAGE__->load_components('DB');
+__PACKAGE__->load_components(qw/ResultSetProxy/);
 
-  __PACKAGE__->connection('dbi:...', 'user', 'pass', \%attrs);
+{
+    no warnings 'once';
+    *dbi_commit = \&txn_commit;
+    *dbi_rollback = \&txn_rollback;
+}
 
-  package MyDB::MyTable;
+sub storage { shift->schema_instance(@_)->storage; }
 
-  use base qw/MyDB/;
-  __PACKAGE__->load_components('Core');
+=head1 NAME
 
-  ...
+DBIx::Class::DB - (DEPRECATED) classdata schema component
 
 =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 not undergo new development and will be moved
+to being a CDBICompat-only component before 1.0. In order to discourage further
+use, documentation has been removed as of 0.08000
 
-=head1 METHODS
+=begin HIDE_BECAUSE_THIS_CLASS_IS_DEPRECATED
 
-=over 4
+=head1 METHODS
 
+=head2 storage
 
-=item storage
+Sets or gets the storage backend. Defaults to L<DBIx::Class::Storage::DBI>.
 
-Which storage backend to be used. Defaults to L<DBIx::Class::Storage::DBI>
+=head2 class_resolver
 
-=item class_resolver
+****DEPRECATED****
 
-Which class to use for resolving a class. Defaults to 
-L<DBIx::Class::ClassResolver::Passthrough>, which returns whatever you throw
-at it. See resolve_class below.
+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('storage');
 __PACKAGE__->mk_classdata('class_resolver' =>
-                            'DBIx::Class::ClassResolver::PassThrough');
+                          'DBIx::Class::ClassResolver::PassThrough');
 
-=item connection
+=head2 connection
 
   __PACKAGE__->connection($dsn, $user, $pass, $attrs);
 
@@ -61,36 +67,107 @@ instantiate the class dbh when required.
 
 sub connection {
   my ($class, @info) = @_;
-  my $storage = DBIx::Class::Storage::DBI->new;
-  $storage->connect_info(\@info);
-  $class->storage($storage);
+  $class->setup_schema_instance unless $class->can('schema_instance');
+  $class->schema_instance->connection(@info);
 }
 
-=item dbi_commit
+=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);
+}
 
-  $class->dbi_commit;
+=head2 txn_begin
 
-Issues a commit again the current dbh
+Begins a transaction (does nothing if AutoCommit is off).
 
 =cut
 
-sub dbi_commit { $_[0]->storage->commit; }
+sub txn_begin { shift->schema_instance->txn_begin(@_); }
+
+=head2 txn_commit
+
+Commits the current transaction.
 
-=item dbi_rollback
+=cut
+
+sub txn_commit { shift->schema_instance->txn_commit(@_); }
 
-  $class->dbi_rollback;
+=head2 txn_rollback
 
-Issues a rollback again the current dbh
+Rolls back the current transaction.
 
 =cut
 
-sub dbi_rollback { $_[0]->storage->rollback; }
+sub txn_rollback { shift->schema_instance->txn_rollback(@_); }
 
-sub resolve_class { return shift->class_resolver->class(@_); }
+=head2 txn_do
 
-1;
+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
 
-=back
+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>
+
+=end HIDE_BECAUSE_THIS_CLASS_IS_DEPRECATED
 
 =head1 AUTHORS
 
@@ -102,3 +179,4 @@ You may distribute this code under the same terms as Perl itself.
 
 =cut
 
+1;