NAME

       Attean::API::IDPJoinPlanner - Iterative dynamic programming query planning role

VERSION

       This document describes Attean::API::IDPJoinPlanner version 0.019

SYNOPSIS

         extends 'Attean::QueryPlanner';
         with 'Attean::API::IDPJoinPlanner';

DESCRIPTION

       The Attean::API::IDPJoinPlanner role provides a query planner the "joins_for_plan_alternatives" method,
       as well as the cost estimation methods that consume the Attean::API::CostPlanner role.

ATTRIBUTES

METHODS

BUGS

       Please report any bugs or feature requests to through the GitHub web interface at
       <https://github.com/kasei/attean/issues>.

REFERENCES

       The seminal reference for Iterative Dynamic Programming is "Iterative dynamic programming: a new class of
       query optimization algorithms" by D. Kossmann and K. Stocker, ACM Transactions on Database Systems
       (2000).

       The heuristics to order triple patterns in this module is influenced by The ICS-FORTH Heuristics-based
       SPARQL Planner (HSP) <http://www.ics.forth.gr/isl/index_main.php?l=e&c=645>.

SEE ALSO

AUTHOR

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

COPYRIGHT

       Copyright (c) 2014--2018 Gregory Todd Williams.  This program is free software; you can redistribute it
       and/or modify it under the same terms as Perl itself.