RDF::Query::Plan::Join(3)

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

VERSION
This document describes RDF::Query::Plan::Join version 2.919.

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>