NAME

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

VERSION

This document describes Attean::API::IDPJoinPlanner version 0.021

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).

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.