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Attean::API::AggregateExpression - Role representing an aggregate expression

Attean::API::AggregateExpression(3pm) User Contributed Perl Documentation Attean::API::AggregateExpression(3pm)

NAME

Attean::API::AggregateExpression - Role representing an aggregate expression tree

VERSION

This document describes Attean::API::AggregateExpression version 0.017

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 (c) 2014--2016 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
2017-10-02 perl v5.26.0