NAME¶
JSON::Any - Wrapper Class for the various JSON classes (DEPRECATED)
VERSION¶
version 1.38
SYNOPSIS¶
use JSON::Any;
my $j = JSON::Any->new;
my $json = $j->objToJson({foo=>'bar', baz=>'quux'});
my $obj = $j->jsonToObj($json);
DESCRIPTION¶
This module tries to provide a coherent API to bring together the various JSON
modules currently on CPAN. This module will allow you to code to any JSON API
and have it work regardless of which JSON module is actually installed.
use JSON::Any;
my $j = JSON::Any->new;
$json = $j->objToJson({foo=>'bar', baz=>'quux'});
$obj = $j->jsonToObj($json);
or
$json = $j->encode({foo=>'bar', baz=>'quux'});
$obj = $j->decode($json);
or
$json = $j->Dump({foo=>'bar', baz=>'quux'});
$obj = $j->Load($json);
or
$json = $j->to_json({foo=>'bar', baz=>'quux'});
$obj = $j->from_json($json);
or without creating an object:
$json = JSON::Any->objToJson({foo=>'bar', baz=>'quux'});
$obj = JSON::Any->jsonToObj($json);
On load, JSON::Any will find a valid JSON module in your @INC by looking for
them in this order:
Cpanel::JSON::XS
JSON::XS
JSON::PP
JSON
JSON::DWIW
And loading the first one it finds.
You may change the order by specifying it on the "use JSON::Any" line:
use JSON::Any qw(DWIW XS CPANEL JSON PP);
Specifying an order that is missing modules will prevent those module from being
used:
use JSON::Any qw(CPANEL PP); # same as JSON::MaybeXS
This will check in that order, and will never attempt to load JSON::XS,
"JSON" in JSON.pm, or JSON::DWIW. This can also be set via the
$ENV{JSON_ANY_ORDER} environment variable.
JSON::Syck has been deprecated by its author, but in the attempt to still stay
relevant as a "Compatibility Layer" JSON::Any still supports it.
This support however has been made optional starting with JSON::Any 1.19. In
deference to a bug request starting with JSON.pm 1.20, JSON::Syck and other
deprecated modules will still be installed, but only as a last resort and will
now include a warning.
use JSON::Any qw(Syck XS JSON);
or
$ENV{JSON_ANY_ORDER} = 'Syck XS JSON';
At install time, JSON::Any will attempt to install JSON::PP as a reasonable
fallback if you do not appear have
any backends installed on your
system.
WARNING: If you call JSON::Any with an empty list
use JSON::Any ();
It will skip the JSON package detection routines and will die loudly that it
couldn't find a package.
DEPRECATION NOTICE¶
The original need for JSON::Any has been solved (quite some time ago actually).
If you're producing new code it is recommended to use JSON::MaybeXS which will
optionally use Cpanel::JSON::XS for speed purposes.
JSON::Any will continue to be maintained for compatibility with existing code,
but for new code you should strongly consider using JSON::MaybeXS instead.
WARNING¶
JSON::XS 3.0 or higher has a conflict with any version of JSON.pm less than 2.90
when you use JSON.pm's "-support_by_pp" option, which JSON::Any
enables by default.
This situation should only come up with JSON::Any if you have JSON.pm 2.61 or
lower
and JSON::XS 3.0 or higher installed, and you use JSON.pm via
"use JSON::Any qw(JSON);" or the "JSON_ANY_ORDER"
environment variable.
If you run into an issue where you're getting recursive inheritance errors in a
Types::Serialiser package, please try upgrading JSON.pm to 2.90 or higher.
METHODS¶
- "new"
- Will take any of the parameters for the underlying system and pass them
through. However these values don't map between JSON modules, so, from a
portability standpoint this is really only helpful for those parameters
that happen to have the same name.
The one parameter that is universally supported (to the extent that is
supported by the underlying JSON modules) is "utf8". When this
parameter is enabled all resulting JSON will be marked as unicode, and all
unicode strings in the input data structure will be preserved as such.
Also note that the "allow_blessed" parameter is recognised by all
the modules that throw exceptions when a blessed reference is given them
meaning that setting it to true works for all modules. Of course, that
means that you cannot set it to false intentionally in order to always get
such exceptions.
The actual output will vary, for example JSON will encode and decode unicode
chars (the resulting JSON is not unicode) whereas JSON::XS will emit
unicode JSON.
- "handlerType"
- Takes no arguments, returns a string indicating which JSON Module is in
use.
- "handler"
- Takes no arguments, if called on an object returns the internal JSON::*
object in use. Otherwise returns the JSON::* package we are using for
class methods.
- "true"
- Takes no arguments, returns the special value that the internal JSON
object uses to map to a JSON "true" boolean.
- "false"
- Takes no arguments, returns the special value that the internal JSON
object uses to map to a JSON "false" boolean.
- "objToJson"
- Takes a single argument, a hashref to be converted into JSON. It returns
the JSON text in a scalar.
- "to_json"
- "Dump"
- "encode"
- Aliases for "objToJson", can be used interchangeably, regardless
of the underlying JSON module.
- "jsonToObj"
- Takes a single argument, a string of JSON text to be converted back into a
hashref.
- "from_json"
- "Load"
- "decode"
- Aliases for "jsonToObj", can be used interchangeably, regardless
of the underlying JSON module.
ACKNOWLEDGEMENTS¶
This module came about after discussions on irc.perl.org about the fact that
there were now six separate JSON perl modules with different interfaces.
In the spirit of Class::Any, JSON::Any was created with the considerable help of
Matt 'mst' Trout.
Simon Wistow graciously supplied a patch for backwards compatibility with
JSON::XS versions previous to 2.01
San Dimas High School Football Rules!
AUTHORS¶
- •
- Chris Thompson <cthom@cpan.org>
- •
- Chris Prather <chris@prather.org>
- •
- Robin Berjon <robin@berjon.com>
- •
- Marc Mims <marc@questright.com>
- •
- Tomas Doran <bobtfish@bobtfish.net>
COPYRIGHT AND LICENSE¶
This software is copyright (c) 2007 by Chris Thompson.
This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.
CONTRIBUTORS¶
- •
- Karen Etheridge <ether@cpan.org>
- •
- XXXX XXX'XX (Yuval Kogman) <nothingmuch@woobling.org>
- •
- Dagfinn Ilmari Mannsaaker <ilmari@ilmari.org>
- •
- Justin Hunter <justin.d.hunter@gmail.com>
- •
- Todd Rinaldo <toddr@cpan.org>
- •
- Matthew Horsfall <wolfsage@gmail.com>