Attean::API::AggregateExpression - Role representing an aggregate expression tree
This document describes Attean::API::AggregateExpression version 0.002
use v5.14; use Attean;
This is a Moo role representing aggregate expressions.
This role consumes Attean::API::DirectedAcyclicGraph.
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.
'seperator'
Please report any bugs or feature requests to through the GitHub web interface at https://github.com/kasei/attean/issues.
http://www.perlrdf.org/
Gregory Todd Williams <gwilliams@cpan.org>
<gwilliams@cpan.org>
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.
To install Attean, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Attean
CPAN shell
perl -MCPAN -e shell install Attean
For more information on module installation, please visit the detailed CPAN module installation guide.