NAME

       MooseX::Storage::Engine::Trait::OnlyWhenBuilt - An engine trait to bypass serialization

VERSION

       version 0.45

SYNOPSIS

           {   package Point;
               use Moose;
               use MooseX::Storage;

               with Storage( traits => [qw|OnlyWhenBuilt|] );

               has 'x' => (is => 'rw', lazy_build => 1 );
               has 'y' => (is => 'rw', lazy_build => 1 );
               has 'z' => (is => 'rw', builder => '_build_z' );

               sub _build_x { 3 }
               sub _build_y { expensive_computation() }
               sub _build_z { 3 }
           }

           my $p = Point->new( 'x' => 4 );

           # the result of ->pack will contain:
           # { x => 4, z => 3 }
           $p->pack;

DESCRIPTION

       Sometimes you don't want a particular attribute to be part of the serialization if it has
       not been built yet. If you invoke "Storage()" as outlined in the "Synopsis", only
       attributes that have been built (i.e., where the predicate returns 'true') will be
       serialized.  This avoids any potentially expensive computations.

       This trait is applied to an instance of MooseX::Storage::Engine, for the user-visible
       version shown in the SYNOPSIS, see MooseX::Storage::Traits::OnlyWhenBuilt

METHODS

   Introspection
       meta

BUGS

       All complex software has bugs lurking in it, and this module is no exception. If you find
       a bug please either email me, or add the bug to cpan-RT.

AUTHORS

       •   Chris Prather <chris.prather@iinteractive.com>

       •   Stevan Little <stevan.little@iinteractive.com>

       •   XXXX XXX'XX (Yuval Kogman) <nothingmuch@woobling.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2007 by Infinity Interactive, Inc..

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

perl v5.18.1                                201MooseX::Storage::Engine::Trait::OnlyWhenBuilt(3pm)