NAME¶

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

VERSION¶

This document describes Attean::API::IDPJoinPlanner version 0.034

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