RDF::Query::Algebra::Project - Algebra class for projection
This document describes RDF::Query::Algebra::Project version 2.918.
Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.
new ( $pattern,
\@vars_and_exprs )
Returns a new Project structure.
construct_args
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
pattern
Returns the pattern to be sorted.
vars
Returns the vars to be projected to.
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).
as_spin ( $model )
Adds statements to the given model to represent this algebra object in the SPARQL Inferencing Notation (http://www.spinrdf.org/).
type
Returns the type of this algebra expression.
referenced_variables
Returns a list of the variable names used in this algebra expression.
bind_variables ( \%bound )
Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values.
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.
is_solution_modifier
Returns true if this node is a solution modifier.
Gregory Todd Williams <gwilliams@cpan.org>