Attean::API::AggregateExpression3pm

Usage

  use v5.14;
  use Attean;

Version

This document describes Attean::API::AggregateExpression version 0.035

Overview

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.