Which recommended Perl modules can serialize Moose objects?
I was usual开发者_如何学Pythonly using Storable
with nstore
, but now I have a module that has CODE
and apparently Storable
doesn't like that.
I found YAML
(and YAML::XS
which I can't really get to work).
I also experimented a bit with MooseX::Storage without much success.
Are there other alternatives? What would you recommend?
You can dump a coderef with Data::Dumper after setting $Data::Dumper::Deparse
to a true value, but this is only intended for debugging purposes, not for serialization.
I would suggest you go back to looking at why MooseX::Storage isn't working out for you, as the authors tried really hard to present a well-abstracted and robust solution for Moose object serialization.
Update: it looks like you are running into issues serializing the _offset_sub
attribute, as described in this question. Since that attribute has a builder, and its construction is fairly trivial (it just looks at the current value of another attribute), you shouldn't need to serialize it at all -- when you deserialize your object and want to use it again, the builder will be invoked the first time you call $this->offset
. Consequently, you should just be able to mark it as "do not serialize":
use MooseX::Storage;
has '_offset_sub' => (
is => 'ro',
isa => 'CodeRef',
traits => [ 'DoNotSerialize' ],
lazy => 1,
builder => '_build_offset_sub',
init_arg => undef,
);
Lastly, this is somewhat orthogonal, but you can fold the offset
and
_offset_sub
attributes together by using the native attribute 'Code' trait:
has offset => (
is => 'bare',
isa => 'CodeRef',
traits => [ qw(Code DoNotSerialize) ],
lazy => 1,
builder => '_build_offset',
init_arg => undef,
handles => {
offset => 'execute_method',
},
);
sub _build_offset {
my ($self) = @_;
# same as previous _build_offset_sub...
}
Have a look at KiokuDB
, its designed with and for Moose
so it should really cover all the corners (NB. I haven't tried it myself but I keep meaning to!)
/I3az/
I believe Data::Dump::Streamer can serialize coderefs. Haven't used it myself though.
精彩评论