RDF::Query::Algebra::BasicGraphPattern - Algebra class for BasicGraphPattern patterns
new ( @triples )
Returns a new BasicGraphPattern structure.
construct_args
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
triples
Returns a list of triples belonging to this BGP.
sse
Returns the SSE string for this alegbra expression.
as_sparql
Returns the SPARQL string for this alegbra expression.
type
Returns the type of this algebra expression.
referenced_variables
Returns a list of the variable names used in this algebra expression.
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.
fixup ( $bridge, $base, \%namespaces )
Returns a new pattern that is ready for execution using the given bridge. This method replaces generic node objects with bridge-native objects.
clone
bind_variables ( \%bound )
Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values.
execute ( $query, $bridge, \%bound, $context, %args )
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.