Algebra and logic for access control

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rdf::query::algebra::filter

RDF::Query::Algebra::Filter(3pm)			User Contributed Perl Documentation			  RDF::Query::Algebra::Filter(3pm)

NAME

       RDF::Query::Algebra::Filter - Algebra class for Filter expressions

VERSION

       This document describes RDF::Query::Algebra::Filter version 2.908.

METHODS

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

       "new ( $expression, $pattern )"
	   Returns a new Filter structure.

       "construct_args"
	   Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.

       "expr"
	   Returns the filter expression.

       "pattern"
	   Returns the filter 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).

       "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.

       "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 <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31					  RDF::Query::Algebra::Filter(3pm)

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