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address it. Please include a thorough description of the problem with code and
data examples if at all possible.

If you have found a bug, please report it on the BioPerl bug tracking system
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=head1 COPYRIGHT

Copyright 2011-2014 by Florent Angly <florent.angly@gmail.com>

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.10.1 or,
at your option, any later version of Perl 5 you may have available.

=cut


package Bio::Community::IO::Driver::biom;

use Moose;
use Method::Signatures;
use namespace::autoclean;
use Bio::Community::Member;
use Bio::Community::TaxonomyUtils;
use JSON::XS qw( decode_json encode_json );
use DateTime;

use constant BIOM_NAME        => 'Biological Observation Matrix 1.0';
use constant BIOM_URL         => 'http://biom-format.org/documentation/format_versions/biom-1.0.html';
use constant BIOM_MATRIX_TYPE => 'sparse'; # sparse or dense
use constant BIOM_TYPE        => 'OTU table';
# "XYZ table" where XYZ is Pathway, Gene, Function, Ortholog, Metabolite or Taxon

extends 'Bio::Community::IO';
with 'Bio::Community::Role::IO';


our $multiple_communities   =  1;      # format supports several communities per file
our $explicit_ids           =  1;      # IDs are explicitly recorded
our $default_sort_members   =  0;      # unsorted
our $default_abundance_type = 'count'; # absolute count (positive integer)
our $default_missing_string =  0;      # empty members get a '0'


has 'matrix_type' => (
   is => 'rw',
   isa => 'Maybe[BiomMatrixType]',
   required => 0,
   init_arg => '-matrix_type',
   default => undef,
   lazy => 1,
   reader => 'get_matrix_type',
   writer => 'set_matrix_type',
   predicate => '_has_matrix_type',
);


has 'matrix_element_type' => (
   is => 'rw',
   #isa => 'Str', # either int, float or unicode
   required => 0,
   init_arg => undef,
   default => undef,
   lazy => 1,
   reader => '_get_matrix_element_type',
   writer => '_set_matrix_element_type',
);


has '_json' => (
   is => 'rw',
   #isa => 'JSON::XS',
   required => 0,
   init_arg => undef,
   default => undef,
   lazy => 1,
   predicate => '_has_json',
   reader => '_get_json',
   writer => '_set_json',
);


has '_max_line' => (
   is => 'rw',
   #isa => 'StrictlyPositiveInt',
   required => 0,
   init_arg => undef,
   lazy => 1,
   default => 0,
   reader => '_get_max_line',
   writer => '_set_max_line',
);


has '_max_col' => (
   is => 'rw',
   #isa => 'StrictlyPositiveInt',
   required => 0,
   init_arg => undef,
   lazy => 1,
   default => 0,
   reader => '_get_max_col',
   writer => '_set_max_col',
);


has '_line' => (
   is => 'rw',
   isa => 'PositiveInt',
   required => 0,
   init_arg => undef,
   default => 0,
   lazy => 1,
   reader => '_get_line',
   writer => '_set_line',
);


has '_col' => (
   is => 'rw',