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README

NAME
    JSON::JOM - the JSON Object Model

SYNOPSIS
     # from_json and to_json compatible with the JSON module
     # but build JSON::JOM::Object and JSON::JOM::Array objects
     use JSON::JOM qw[from_json to_json]; 
     my $object = from_json('{ ...some json... }');
 
     # JOM objects are blessed hashrefs and arrayrefs
     # So you can read from them like this...
     my $thingy = $object->{'foo'}{'bar'}[0]{'quux'};
 
     # But look at this:
     my $array = $thingy->parentNode->parentNode;
     print $array->nodePath;  # $['foo']['bar']

DESCRIPTION
    Until version 0.100 the entire JOM API should be considered subject to
    change without notice.

    JSON::JOM provides a DOM-like API for working with JSON.

    While JSON represents JSON arrays as Perl arrayrefs and JSON objects as
    Perl hashrefs, JSON::JOM represents each as a blessed object.

    Internally, JSON::JOM::Object and JSON::JOM::Array store their data as a
    hashref or arrayref, so you can still use this pattern of working:

      my $data = JSON::JOM::from_json(<<'JSON');
      {
        "foo": {
          "bar": [
            { "quux" : 0 },
            { "quux" : 1 },
            { "quux" : 2 },
          ]
        }
      }
      JSON
  
      foreach my $obj (@{ $data->{foo}{bar} })
      {
        printf("The quux of the matter is: %d\n", $obj->{quux})
      }

    But all arrays and objects provide various methods to make working with
    them a bit easier. See JSON::JOM::Object and JSON::JOM::Array for
    descriptions of these methods.

    Values that the JSON module would represent as a Perl scalar, are
    represented as a JSON::JOM::Value in JOM. This uses overload to act like
    a scalar.

    Note that if you use the arrayref/hashref way of working, things are not
    always completely intuitive:

      $root  = to_jom({});
      $child = [ 1,2,3 ];
  
      # Add $child to our JOM structure:
      $root->{list} = $child;
  
      print $root->{list}->count . "\n";  # prints '3'
  
      # Now modify $child
      push @$child, 4;
  
      print $root->{list}->count . "\n";  # still '3'!

    This is because the $child arrayref isn't just placed blindly into the
    JOM structure, but "imported" into it. Compare the above with:

      $root  = to_jom({});
      $child = [ 1,2,3 ];
  
      # Add $child to our JOM structure, and this time,
      # set $child to point to the imported list.
      $child = $root->{list} = $child;
  
      print $root->{list}->count . "\n";  # prints '3'
  
      # Now modify $child
      push @$child, 4;
  
      print $root->{list}->count . "\n";  # prints '4'

FUNCTIONS
    This modules provides the following functions. None of them are exported
    by default.

      use JSON::JOM;              # export nothing
      use JSON::JOM ':standard';  # export first three
      use JSON::JOM ':all;        # export everything
      use JSON::JOM 'to_jom';     # export a particular function

  "from_json($string, \%options)"
    JSON parser compatible with JSON::from_json.

  "to_json($jom, \%options)"
    JSON serialiser compatible with JSON::from_json, except that
    convert_blessed is always true.

  "to_jom($data)"
    Converts a Perl hashref/arrayref structure to its JOM equivalent.

BUGS
    Please report any bugs to <http://rt.cpan.org/>.

SEE ALSO
    The real guts of JOM are in JSON::JOM::Object, JSON::JOM::Array and
    JSON::JOM::Value.

    JSON::JOM::Plugins.

    JSON.

AUTHOR
    Toby Inkster <tobyink@cpan.org>.

COPYRIGHT
    Copyright 2010 Toby Inkster

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

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