Data::Freq::Field - Controls counting with Data::Freq at each level
Version 0.04
Usage:
Data::Freq::Field->new({
type => 'text' , # { 'text' | 'number' | 'date' }
sort => 'count', # { 'value' | 'count' | 'first' | 'last' }
order => 'desc' , # { 'asc' | 'desc' }
pos => 0 , # { 0 | 1 | 2 | -1 | -2 | .. | [0, 1, 2] | .. }
key => 'mykey', # { any key(s) for input hash refs }
convert => sub {...},
});
Constructs a field object.
See "field specification" in Data::Freq for details.
Usage:
my $field = Data::Freq::Field->new(...);
my $record = Data::Freq::Record->new(...);
my $normalized_text = $field->evaluate_record($record);
Evaluates an input record as a normalized text that will be used for frequency counting, depending on the parameters passed to the new() method.
This is intended to be an internal method for Data::Freq.
Usage:
my $raw_node_list = [values %{$parent_node->children}];
my $sorted_node_list = $field->select_nodes($raw_node_list);
Sorts and reduces a list of nodes (Data::Freq::Node) at the corresponding depth in the frequency tree, depending on the parameters passed to the new() method.
This is intended to be an internal method for Data::Freq.
Retrieves the type parameter.
Retrieves the aggregate parameter.
Retrieves the sort parameter.
Retrieves the order parameter.
Retrieves the pos parameter as an array ref.
Retrieves the key parameter as an array ref.
Retrieves the limit parameter.
Retrieves the offset parameter.
Retrieves the strftime parameter (POSIX::strftime()).
Retrieves the convert parameter.
Mahiro Ando, <mahiro at cpan.org>
Copyright 2012 Mahiro Ando.
This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
