NAME

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

VERSION

       This document describes Attean::API::AggregateExpression version 0.033

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

AUTHOR

       Gregory Todd Williams  "<gwilliams@cpan.org>"

COPYRIGHT

       Copyright (c) 2014--2022 Gregory Todd Williams.  This program is free software; you can
       redistribute it and/or modify it under the same terms as Perl itself.