use DBIx::Class::Exception;
use Carp::Clan qw/^DBIx::Class/;
-use Scalar::Util qw/weaken/;
+use Scalar::Util ();
use File::Spec;
use Sub::Name ();
-require Module::Find;
+use Module::Find();
use base qw/DBIx::Class/;
__PACKAGE__->load_namespaces();
package Library::Schema::Result::CD;
- use base qw/DBIx::Class/;
- __PACKAGE__->load_components(qw/Core/); # for example
+ use base qw/DBIx::Class::Core/;
+
+ __PACKAGE__->load_components(qw/InflateColumn::DateTime/); # for example
__PACKAGE__->table('cd');
# Elsewhere in your code:
$dsn,
$user,
$password,
- { AutoCommit => 0 },
+ { AutoCommit => 1 },
);
my $schema2 = Library::Schema->connect($coderef_returning_dbh);
local *Class::C3::reinitialize = sub { };
use warnings 'redefine';
- # ensure classes are loaded and fetch properly sorted classes
+ # ensure classes are loaded and attached in inheritance order
$class->ensure_class_loaded($_) foreach(values %results);
- my @subclass_last = sort { $results{$a}->isa($results{$b}) } keys(%results);
-
+ my %inh_idx;
+ my @subclass_last = sort {
+
+ ($inh_idx{$a} ||=
+ scalar @{mro::get_linear_isa( $results{$a} )}
+ )
+
+ <=>
+
+ ($inh_idx{$b} ||=
+ scalar @{mro::get_linear_isa( $results{$b} )}
+ )
+
+ } keys(%results);
+
foreach my $result (@subclass_last) {
my $result_class = $results{$result};
my $rs_class = delete $resultsets{$result};
my $rs_set = $class->_ns_get_rsrc_instance ($result_class)->resultset_class;
-
+
if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') {
if($rs_class && $rs_class ne $rs_set) {
carp "We found ResultSet class '$rs_class' for '$result', but it seems "
=back
-Alternative method to L</load_namespaces> which you should look at
-using if you can.
+L</load_classes> is an alternative method to L</load_namespaces>, both of
+which serve similar purposes, each with different advantages and disadvantages.
+In the general case you should use L</load_namespaces>, unless you need to
+be able to specify that only specific classes are loaded at runtime.
With no arguments, this method uses L<Module::Find> to find all classes under
the schema's namespace. Otherwise, this method loads the classes you specify
Set the storage class that will be instantiated when L</connect> is called.
If the classname starts with C<::>, the prefix C<DBIx::Class::Storage> is
-assumed by L</connect>.
+assumed by L</connect>.
You want to use this to set subclasses of L<DBIx::Class::Storage::DBI>
-in cases where the appropriate subclass is not autodetected, such as
-when dealing with MSSQL via L<DBD::Sybase>, in which case you'd set it
-to C<::DBI::Sybase::MSSQL>.
+in cases where the appropriate subclass is not autodetected.
If your storage type requires instantiation arguments, those are
defined as a second argument in the form of a hashref and the entire
general.
Note that C<connect_info> expects an arrayref of arguments, but
-C<connect> does not. C<connect> wraps it's arguments in an arrayref
+C<connect> does not. C<connect> wraps its arguments in an arrayref
before passing them to C<connect_info>.
=head3 Overloading
sub resultset {
my ($self, $moniker) = @_;
+ $self->throw_exception('resultset() expects a source name')
+ unless defined $moniker;
return $self->source($moniker)->resultset;
}
This interface is preferred over using the individual methods L</txn_begin>,
L</txn_commit>, and L</txn_rollback> below.
-WARNING: If you are connected with C<AutoCommit => 0> the transaction is
+WARNING: If you are connected with C<< AutoCommit => 0 >> the transaction is
considered nested, and you will still need to call L</txn_commit> to write your
-changes when appropriate. You will also want to connect with C<auto_savepoint =>
-1> to get partial rollback to work, if the storage driver for your database
+changes when appropriate. You will also want to connect with C<< auto_savepoint =>
+1 >> to get partial rollback to work, if the storage driver for your database
supports it.
-Connecting with C<AutoCommit => 1> is recommended.
+Connecting with C<< AutoCommit => 1 >> is recommended.
=cut
[ 2, 'Indie Band' ],
...
]);
-
+
Since wantarray context is basically the same as looping over $rs->create(...)
you won't see any performance benefits and in this case the method is more for
convenience. Void context sends the column information directly to storage
sub connection {
my ($self, @info) = @_;
return $self if !@info && $self->storage;
-
+
my ($storage_class, $args) = ref $self->storage_type ?
($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {});
-
+
$storage_class = 'DBIx::Class::Storage'.$storage_class
if $storage_class =~ m/^::/;
- eval "require ${storage_class};";
+ eval { $self->ensure_class_loaded ($storage_class) };
$self->throw_exception(
"No arguments to load_classes and couldn't load ${storage_class} ($@)"
) if $@;
no strict 'refs';
no warnings 'redefine';
foreach my $meth (qw/class source resultset/) {
- *{"${target}::${meth}"} =
+ *{"${target}::${meth}"} = Sub::Name::subname "${target}::${meth}" =>
sub { shift->schema->$meth(@_) };
}
}
You may override this method in your schema if you wish to use a different
format.
+ WARNING
+
+ Prior to DBIx::Class version 0.08100 this method had a different signature:
+
+ my $filename = $table->ddl_filename($type, $dir, $version, $preversion)
+
+ In recent versions variables $dir and $version were reversed in order to
+ bring the signature in line with other Schema/Storage methods. If you
+ really need to maintain backward compatibility, you can do the following
+ in any overriding methods:
+
+ ($dir, $version) = ($version, $dir) if ($DBIx::Class::VERSION < 0.08100);
+
=cut
sub ddl_filename {
$filename =~ s/::/-/g;
$filename = File::Spec->catfile($dir, "$filename-$version-$type.sql");
$filename =~ s/$version/$preversion-$version/ if($preversion);
-
+
return $filename;
}
=head2 dclone
-Recommeneded way of dcloning objects. This is needed to properly maintain
-references to the schema object (which itself is B<not> cloned.)
+=over 4
+
+=item Arguments: $object
+
+=item Return Value: dcloned $object
+
+=back
+
+Recommended way of dcloning L<DBIx::Class::Row> and L<DBIx::Class::ResultSet>
+objects so their references to the schema object
+(which itself is B<not> cloned) are properly maintained.
=cut
$source = $source->new({ %$source, source_name => $moniker });
$source->schema($self);
- weaken($source->{schema}) if ref($self);
+ Scalar::Util::weaken($source->{schema}) if ref($self);
my $rs_class = $source->result_class;
$self->throw_exception
("No arguments to load_classes and couldn't load ${base} ($@)")
if $@;
-
+
if ($self eq $target) {
# Pathological case, largely caused by the docs on early C::M::DBIC::Plain
foreach my $moniker ($self->sources) {
$self->connection(@info);
return $self;
}
-
+
my $schema = $self->compose_namespace($target, $base);
{
no strict 'refs';
my $name = join '::', $target, 'schema';
*$name = Sub::Name::subname $name, sub { $schema };
}
-
+
$schema->connection(@info);
foreach my $moniker ($schema->sources) {
my $source = $schema->source($moniker);
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