NAME

       RDF::Query::Plan::Join - Join query plan base class.

VERSION

       This document describes RDF::Query::Plan::Join version 2.910.

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Query::Plan
       class.

       "new ( $lhs, $rhs, $optional )"
       "lhs"
           Returns the left-hand-side plan to the join.

       "rhs"
           Returns the right-hand-side plan to the join.

       "optional"
       "bf ()"
           Returns a string representing the state of the nodes of the triple (bound or free).

       "join_classes"
           Returns the class names of all available join algorithms.

       "distinct"
           Returns true if the pattern is guaranteed to return distinct results.

       "ordered"
           Returns true if the pattern is guaranteed to return ordered results.

       "plan_prototype"
           Returns a list of scalar identifiers for the type of the content (children) nodes of
           this plan node. See RDF::Query::Plan for a list of the allowable identifiers.

       "plan_node_data"
           Returns the data for this plan node that corresponds to the values described by the
           signature returned by "plan_prototype".

AUTHOR

        Gregory Todd Williams <gwilliams@cpan.org>