NAME

RDF::Query::Algebra::Union - Algebra class for Union patterns

VERSION

This document describes RDF::Query::Algebra::Union version 2.918.

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

"new ( $left, $right )": Returns a new Union structure.
"construct_args": Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
"first": Returns the first pattern (LHS) of the union.
"second": Returns the second pattern (RHS) of the union.
"patterns": Returns the two patterns belonging to the UNION pattern.
"sse": Returns the SSE string for this algebra expression.
"as_sparql": Returns the SPARQL string for this algebra expression.
"as_hash": Returns the query as a nested set of plain data structures (no objects).
"type": Returns the type of this algebra expression.
"referenced_variables": Returns a list of the variable names used in this algebra expression.
"potentially_bound": Returns a list of the variable names used in this algebra expression that will bind values during execution.
"definite_variables": Returns a list of the variable names that will be bound after evaluating this algebra expression.

 Gregory Todd Williams <gwilliams@cpan.org>