NAME¶
Attean::API::AggregateExpression - Role representing an aggregate expression
tree
VERSION¶
This document describes Attean::API::AggregateExpression version 0.002
SYNOPSIS¶
use v5.14;
use Attean;
DESCRIPTION¶
This is a Moo role representing aggregate expressions.
ROLES¶
This role consumes Attean::API::DirectedAcyclicGraph.
REQUIRED METHODS¶
Classes consuming this role must provide the following methods:
- "operator()"
- The name of the aggregate operator.
- "scalar_vars()"
- A HASH reference of scalar variables. The only scalar variable defined for
SPARQL 1.1 is 'seperator', a string separator used with the GROUP_CONCAT
aggregate.
BUGS¶
Please report any bugs or feature requests to through the GitHub web interface
at <
https://github.com/kasei/attean/issues>.
SEE ALSO¶
<
http://www.perlrdf.org/>
AUTHOR¶
Gregory Todd Williams "<gwilliams@cpan.org>"
COPYRIGHT¶
Copyright (c) 2014 Gregory Todd Williams. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.