use Moose;
use Scalar::Util qw(refaddr);
-our $VERSION = '0.20';
+our $VERSION = '0.32';
our $AUTHORITY = 'cpan:STEVAN';
# the class marker when
default => sub {{}}
);
-has 'object' => (is => 'rw', isa => 'Object');
+has 'object' => (is => 'rw', isa => 'Object', predicate => '_has_object');
has 'class' => (is => 'rw', isa => 'Str');
## this is the API used by other modules ...
$self->seen->{refaddr $self->object} = undef;
$self->map_attributes('collapse_attribute', \%options);
- $self->storage->{$CLASS_MARKER} = $self->object->meta->identifier;
+ $self->storage->{$CLASS_MARKER} = $self->object->meta->identifier;
return $self->storage;
}
sub expand_object {
my ($self, $data, %options) = @_;
-
+
$options{check_version} = 1 unless exists $options{check_version};
- $options{check_authority} = 1 unless exists $options{check_authority};
+ $options{check_authority} = 1 unless exists $options{check_authority};
# NOTE:
# mark the root object as seen ...
- $self->seen->{refaddr $data} = undef;
-
+ $self->seen->{refaddr $data} = undef;
+
$self->map_attributes('expand_attribute', $data, \%options);
- return $self->storage;
+ return $self->storage;
}
## this is the internal API ...
if ref $value;
if (defined $value && $attr->has_type_constraint) {
- my $type_converter = $self->find_type_handler($attr->type_constraint);
+ my $type_converter = $self->find_type_handler($attr->type_constraint, $value);
(defined $type_converter)
|| confess "Cannot convert " . $attr->type_constraint->name;
$value = $type_converter->{collapse}->($value, $options);
if( ref $value and not(
$options->{disable_cycle_check} or
$self->class->does('MooseX::Storage::Traits::DisableCycleDetection')
- )) {
+ )) {
$self->check_for_cycle_in_collapse($attr, $value)
}
-
+
if (defined $value && $attr->has_type_constraint) {
- my $type_converter = $self->find_type_handler($attr->type_constraint);
+ my $type_converter = $self->find_type_handler($attr->type_constraint, $value);
$value = $type_converter->{expand}->($value, $options);
}
return $value;
} grep {
# Skip our special skip attribute :)
!$_->does('MooseX::Storage::Meta::Attribute::Trait::DoNotSerialize')
- } ($self->object || $self->class)->meta->get_all_attributes;
+ } ($self->_has_object ? $self->object : $self->class)->meta->get_all_attributes;
}
## ------------------------------------------------------------------
# below, so I need easy access
my %OBJECT_HANDLERS = (
expand => sub {
- my ($data, $options) = @_;
+ my ($data, $options) = @_;
(exists $data->{$CLASS_MARKER})
|| confess "Serialized item has no class marker";
# check the class more thoroughly here ...
my ($class, $version, $authority) = (split '-' => $data->{$CLASS_MARKER});
my $meta = eval { $class->meta };
- confess "Class ($class) is not loaded, cannot unpack" if $@;
-
+ confess "Class ($class) is not loaded, cannot unpack" if $@;
+
if ($options->{check_version}) {
my $meta_version = $meta->version;
- if (defined $meta_version && $version) {
+ if (defined $meta_version && $version) {
if ($options->{check_version} eq 'allow_less_than') {
($meta_version <= $version)
|| confess "Class ($class) versions is not less than currently available."
- . " got=($version) available=($meta_version)";
+ . " got=($version) available=($meta_version)";
}
elsif ($options->{check_version} eq 'allow_greater_than') {
($meta->version >= $version)
|| confess "Class ($class) versions is not greater than currently available."
- . " got=($version) available=($meta_version)";
- }
+ . " got=($version) available=($meta_version)";
+ }
else {
($meta->version == $version)
|| confess "Class ($class) versions don't match."
}
}
}
-
+
if ($options->{check_authority}) {
my $meta_authority = $meta->authority;
($meta->authority eq $authority)
|| confess "Class ($class) authorities don't match."
. " got=($authority) available=($meta_authority)"
- if defined $meta_authority && defined $authority;
+ if defined $meta_authority && defined $authority;
}
-
+
# all is well ...
$class->unpack($data, %$options);
},
# the JSON engines are stupid/annoying/frustrating
'Int' => { expand => sub { $_[0] + 0 }, collapse => sub { $_[0] + 0 } },
'Num' => { expand => sub { $_[0] + 0 }, collapse => sub { $_[0] + 0 } },
- # These are boring ones, so they use the identity function ...
+ # These are boring ones, so they use the identity function ...
'Str' => { expand => sub { shift }, collapse => sub { shift } },
'Bool' => { expand => sub { shift }, collapse => sub { shift } },
# These are the trickier ones, (see notes)
# your ArrayRef and/or HashRef one level
# down and inflate any objects we find.
# But this is where it ends, it is too
- # expensive to try and do this any more
+ # expensive to try and do this any more
# recursively, when it is probably not
# nessecary in most of the use cases.
# However, if you need more then this, subtype
- # and add a custom handler.
+ # and add a custom handler.
'ArrayRef' => {
expand => sub {
my ( $array, @args ) = @_;
},
collapse => sub {
my ( $array, @args ) = @_;
- # NOTE:
+ # NOTE:
# we need to make a copy cause
# otherwise it will affect the
# other real version.
&& exists $hash->{$k}->{$CLASS_MARKER};
$hash->{$k} = $OBJECT_HANDLERS{expand}->($hash->{$k}, @args);
}
- $hash;
+ $hash;
},
collapse => sub {
my ( $hash, @args ) = @_;
- # NOTE:
+ # NOTE:
# we need to make a copy cause
# otherwise it will affect the
# other real version.
blessed($hash->{$_})
? ($_ => $OBJECT_HANDLERS{collapse}->($hash->{$_}, @args))
: ($_ => $hash->{$_})
- } keys %$hash }
+ } keys %$hash }
}
},
'Object' => \%OBJECT_HANDLERS,
# - SL
#'CodeRef' => {
# expand => sub {}, # use eval ...
- # collapse => sub {}, # use B::Deparse ...
+ # collapse => sub {}, # use B::Deparse ...
#}
);
}
sub find_type_handler {
- my ($self, $type_constraint) = @_;
-
+ my ($self, $type_constraint, $value) = @_;
+
# check if the type is a Maybe and
# if its parent is not parameterized.
# If both is true recurse this method
# using ->type_parameter.
- return $self->find_type_handler($type_constraint->type_parameter)
- if $type_constraint->parent eq 'Maybe'
- and not $type_constraint->parent->can('type_parameter');
+ return $self->find_type_handler($type_constraint->type_parameter, $value)
+ if ($type_constraint->parent && $type_constraint->parent eq 'Maybe'
+ and not $type_constraint->parent->can('type_parameter'));
+
+ # find_type_for is a method of a union type. If we can call that method
+ # then we are dealign with a union and we need to ascertain which of
+ # the union's types we need to use for the value we are serializing.
+ if($type_constraint->can('find_type_for')) {
+ my $tc = $type_constraint->find_type_for($value);
+ return $self->find_type_handler($tc, $value) if defined($tc);
+ }
# this should handle most type usages
# since they they are usually just
# the standard set of built-ins
return $TYPES{$type_constraint->name}
if exists $TYPES{$type_constraint->name};
-
+
# the next possibility is they are
# a subtype of the built-in types,
# in which case this will DWIM in
return $TYPES{$type}
if $type_constraint->is_subtype_of($type);
}
-
+
# NOTE:
# the reason the above will work has to
# do with the fact that custom subtypes
# the guts of a type, and not for some
# weird structural thing which would
# need to be accomidated by the serializer.
- # Of course, mst or phaylon will probably
+ # Of course, mst or phaylon will probably
# do something to throw this assumption
# totally out the door ;)
# - SL
-
+
# NOTE:
# if this method hasnt returned by now
# then we have no been able to find a
# type constraint handler to match
- confess "Cannot handle type constraint (" . $type_constraint->name . ")";
+ confess "Cannot handle type constraint (" . $type_constraint->name . ")";
}
sub find_type_handler_for {
=head1 DESCRIPTION
-No user serviceable parts inside. If you really want to know, read the source :)
+There really aren't any major user serviceable parts here. However the typical
+use case is adding new non-Moose classes to the type registry for
+serialization. Here is an example of this for DateTime objects. This
+assumes a C<DateTime> type has been registered.
+
+ MooseX::Storage::Engine->add_custom_type_handler(
+ 'DateTime' => (
+ expand => sub { DateTime->new(shift) },
+ collapse => sub { (shift)->iso8601 },
+ )
+ );
=head1 METHODS
projects / gitmo/MooseX-Storage.git / blobdiff