+This software is copyright (c) 2013 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.
+
+Terms of the Perl programming language system itself
+
+a) the GNU General Public License as published by the Free
+ Software Foundation; either version 1, or (at your option) any
+ later version, or
+b) the "Artistic License"
+
+--- The GNU General Public License, Version 1, February 1989 ---
+
+This software is Copyright (c) 2013 by Infinity Interactive, Inc..
+
+This is free software, licensed under:
+
+ The GNU General Public License, Version 1, February 1989
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 1, February 1989
+
+ Copyright (C) 1989 Free Software Foundation, Inc.
+ 51 Franklin St, Suite 500, Boston, MA 02110-1335 USA
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The license agreements of most software companies try to keep users
+at the mercy of those companies. By contrast, our General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. The
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+You can use it for your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
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+
+ For example, if you distribute copies of a such a program, whether
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+ We protect your rights with two steps: (1) copyright the software, and
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+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License Agreement applies to any program or other work which
+contains a notice placed by the copyright holder saying it may be
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+"Program", below, refers to any such program or work, and a "work based
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+licensee is addressed as "you".
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+ 1. You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this
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+along with the Program. You may charge a fee for the physical act of
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+ 2. You may modify your copy or copies of the Program or any portion of
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+
+ a) cause the modified files to carry prominent notices stating that
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+
+ c) If the modified program normally reads commands interactively when
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+ in the simplest and most usual way, to print or display an
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+ warranty) and that users may redistribute the program under these
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+ Public License.
+
+ d) You may charge a fee for the physical act of transferring a
+ copy, and you may at your option offer warranty protection in
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+Mere aggregation of another independent work with the Program (or its
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+
+ NO WARRANTY
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+ 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
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+
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+
+ END OF TERMS AND CONDITIONS
+
+ Appendix: How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to humanity, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+ To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively convey
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) 19yy <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) 19xx name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the
+appropriate parts of the General Public License. Of course, the
+commands you use may be called something other than `show w' and `show
+c'; they could even be mouse-clicks or menu items--whatever suits your
+program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the
+ program `Gnomovision' (a program to direct compilers to make passes
+ at assemblers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+That's all there is to it!
+
+
+--- The Artistic License 1.0 ---
+
+This software is Copyright (c) 2013 by Infinity Interactive, Inc..
+
+This is free software, licensed under:
+
+ The Artistic License 1.0
+
+The Artistic License
+
+Preamble
+
+The intent of this document is to state the conditions under which a Package
+may be copied, such that the Copyright Holder maintains some semblance of
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+
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+
+1. You may make and give away verbatim copies of the source form of the
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+
+ d) make other distribution arrangements with the Copyright Holder.
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+
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+
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+
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+
+9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+The End
+
+# NAME
+
+MooseX::Storage - A serialization framework for Moose classes
+
+# SYNOPSIS
+
+ package Point;
+ use Moose;
+ use MooseX::Storage;
+
+ with Storage('format' => 'JSON', 'io' => 'File');
+
+ has 'x' => (is => 'rw', isa => 'Int');
+ has 'y' => (is => 'rw', isa => 'Int');
+
+ 1;
+
+ my $p = Point->new(x => 10, y => 10);
+
+ ## methods to pack/unpack an
+ ## object in perl data structures
+
+ # pack the class into a hash
+ $p->pack(); # { __CLASS__ => 'Point-0.01', x => 10, y => 10 }
+
+ # unpack the hash into a class
+ my $p2 = Point->unpack({ __CLASS__ => 'Point-0.01', x => 10, y => 10 });
+
+ ## methods to freeze/thaw into
+ ## a specified serialization format
+ ## (in this case JSON)
+
+ # pack the class into a JSON string
+ $p->freeze(); # { "__CLASS__" : "Point-0.01", "x" : 10, "y" : 10 }
+
+ # unpack the JSON string into a class
+ my $p2 = Point->thaw('{ "__CLASS__" : "Point-0.01", "x" : 10, "y" : 10 }');
+
+ ## methods to load/store a class
+ ## on the file system
+
+ $p->store('my_point.json');
+
+ my $p2 = Point->load('my_point.json');
+
+# DESCRIPTION
+
+MooseX::Storage is a serialization framework for Moose, it provides
+a very flexible and highly pluggable way to serialize Moose classes
+to a number of different formats and styles.
+
+## Important Note
+
+This is still an early release of this module, so use with caution.
+It's outward facing serialization API should be considered stable,
+but I still reserve the right to make tweaks if I need too. Anything
+beyond the basic pack/unpack, freeze/thaw and load/store should not
+be relied on.
+
+## Levels of Serialization
+
+There are 3 levels to the serialization, each of which builds upon
+the other and each of which can be customized to the specific needs
+of your class.
+
+- __base__
+
+ The first (base) level is `pack` and `unpack`. In this level the
+ class is serialized into a Perl HASH reference, it is tagged with the
+ class name and each instance attribute is stored. Very simple.
+
+ This level is not optional, it is the bare minimum that
+ MooseX::Storage provides and all other levels build on top of this.
+
+ See [MooseX::Storage::Basic](http://search.cpan.org/perldoc?MooseX::Storage::Basic) for the fundamental implementation and
+ options to `pack` and `unpack`
+
+- __format__
+
+ The second (format) level is `freeze` and `thaw`. In this level the
+ output of `pack` is sent to `freeze` or the output of `thaw` is sent
+ to `unpack`. This levels primary role is to convert to and from the
+ specific serialization format and Perl land.
+
+ This level is optional, if you don't want/need it, you don't have to
+ have it. You can just use `pack`/`unpack` instead.
+
+- __io__
+
+ The third (io) level is `load` and `store`. In this level we are reading
+ and writing data to file/network/database/etc.
+
+ This level is also optional, in most cases it does require a `format` role
+ to also be used, the exception being the `StorableFile` role.
+
+## Behaviour modifiers
+
+The serialization behaviour can be changed by supplying `traits`.
+This can be done as follows:
+
+ use MooseX::Storage;
+ with Storage( traits => [Trait1, Trait2,...] );
+
+The following traits are currently bundled with `MooseX::Storage`:
+
+- OnlyWhenBuilt
+
+ Only attributes that have been built (i.e., where the predicate returns
+ 'true') will be serialized. This avoids any potentially expensive computations.
+
+ See [MooseX::Storage::Traits::OnlyWhenBuilt](http://search.cpan.org/perldoc?MooseX::Storage::Traits::OnlyWhenBuilt) for details.
+
+## How we serialize
+
+There are always limits to any serialization framework, there are just
+some things which are really difficult to serialize properly and some
+things which cannot be serialized at all.
+
+## What can be serialized?
+
+Currently only numbers, string, ARRAY refs, HASH refs and other
+MooseX::Storage enabled objects are supported.
+
+With Array and Hash references the first level down is inspected and
+any objects found are serialized/deserialized for you. We do not do
+this recursively by default, however this feature may become an
+option eventually.
+
+The specific serialize/deserialize routine is determined by the
+Moose type constraint a specific attribute has. In most cases subtypes
+of the supported types are handled correctly, and there is a facility
+for adding handlers for custom types as well. This will get documented
+eventually, but it is currently still in development.
+
+## What can not be serialized?
+
+We do not support CODE references yet, but this support might be added
+in using B::Deparse or some other deep magic.
+
+Scalar refs are not supported, mostly because there is no way to know
+if the value being referenced will be there when the object is inflated.
+I highly doubt will be ever support this in a general sense, but it
+would be possible to add this yourself for a small specific case.
+
+Circular references are specifically disallowed, however if you break
+the cycles yourself then re-assemble them later you can get around this.
+The reason we disallow circular refs is because they are not always supported
+in all formats we use, and they tend to be very tricky to do for all
+possible cases. It is almost always something you want to have tight control
+over anyway.
+
+# CAVEAT
+
+This is __not__ a persistence framework; changes to your object after
+you load or store it will not be reflected in the stored class.
+
+# EXPORTS
+
+- __Storage (%options)__
+
+ This module will export the `Storage` method and can be used to
+ load a specific set of MooseX::Storage roles to implement a specific
+ combination of features. It is meant to make things easier, but it
+ is by no means the only way. You can still compose your roles by
+ hand if you like.
+
+ By default, options are assumed to be short forms. For example, this:
+
+ Storage(format => 'JSON');
+
+ ...will result in looking for MooseX::Storage::Format::JSON. To use a role
+ that is not under the default namespace prefix, start with an equal sign:
+
+ Storage(format => '=My::Private::JSONFormat');
+
+ To use a parameterized role (for which, see [MooseX::Role::Parameterized](http://search.cpan.org/perldoc?MooseX::Role::Parameterized)) you
+ can pass an arrayref of the role name (in short or long form, as above) and its
+ parameters:
+
+ Storage(format => [ JSONpm => { json_opts => { pretty => 1 } } ]);
+
+# METHODS
+
+- __import__
+
+## Introspection
+
+- __meta__
+
+# TODO
+
+This module needs docs and probably a Cookbook of some kind as well.
+This is an early release, so that is my excuse for now :)
+
+For the time being, please read the tests and feel free to email me
+if you have any questions. This module can also be discussed on IRC
+in the \#moose channel on irc.perl.org.
+
+# 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.
+
+# AUTHOR
+
+Chris Prather <chris.prather@iinteractive.com>
+
+Stevan Little <stevan.little@iinteractive.com>
+
+Yuval Kogman <yuval.kogman@iinteractive.com>
+
+# COPYRIGHT AND LICENSE
+
+Copyright 2007-2008 by Infinity Interactive, Inc.
+
+[http://www.iinteractive.com](http://www.iinteractive.com)
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself.
projects / gitmo/MooseX-Storage.git / commitdiff