RDF::Query::Algebra::Service - Algebra class for SERVICE (federation) patterns
This document describes RDF::Query::Algebra::Service version 2.200, released 6 August 2009.
new ( $endpoint,
$pattern )Returns a new Service structure.
construct_argsReturns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
endpointReturns the endpoint resource of the named graph expression.
patternReturns the graph pattern of the named graph expression.
add_bloom ( $variable,
$filter )Adds a FILTER to the enclosed GroupGraphPattern to restrict values of the named $variable to the values encoded in the $filter (a Bloom::Filter object).
sseReturns the SSE string for this alegbra expression.
as_sparqlReturns the SPARQL string for this alegbra expression.
typeReturns the type of this algebra expression.
referenced_variablesReturns a list of the variable names used in this algebra expression.
definite_variablesReturns a list of the variable names that will be bound after evaluating this algebra expression.
qualify_uris ( \%namespaces,
$base )Returns a new algebra pattern where all referenced Resource nodes representing QNames (ns:local) are qualified using the supplied %namespaces.
fixup ( $query,
$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.
execute ( $query,
$bridge,
\%bound,
$context,
%args )
bloom_filter_for_iterator ( $query,
$bridge,
$bound,
$iterator,
$variable,
$error )Returns a Bloom::Filter object containing the Resource and Literal values that are bound to $variable in the $iterator's data.
Gregory Todd Williams <gwilliams@cpan.org>
