RDF::Query::Algebra::GroupGraphPattern - Algebra class for GroupGraphPattern patterns
This document describes RDF::Query::Algebra::GroupGraphPattern version 2.917.
Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.
new ( @graph_patterns )
Returns a new GroupGraphPattern structure.
construct_args
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
patterns
Returns a list of the graph patterns in this GGP.
add_pattern
Appends a new child pattern to the GGP.
quads
Returns a list of the quads belonging to this GGP.
sse
Returns the SSE string for this algebra expression.
explain
Returns a string serialization of the algebra appropriate for display on the command line.
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.
check_duplicate_blanks
Returns true if blank nodes respect the SPARQL rule of no blank-label re-use across BGPs, otherwise throws a RDF::Query::Error::QueryPatternError exception.
Gregory Todd Williams <gwilliams@cpan.org>
To install RDF::Query, copy and paste the appropriate command in to your terminal.
cpanm
cpanm RDF::Query
CPAN shell
perl -MCPAN -e shell install RDF::Query
For more information on module installation, please visit the detailed CPAN module installation guide.