RDF::Query::Algebra::Project(3pm)

NAME

RDF::Query::Algebra::Project - Algebra class for projection

VERSION

This document describes RDF::Query::Algebra::Project version 2.919.

METHODS

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.

AUTHOR

 Gregory Todd Williams <[email protected]>