NAME
RDF::Query::Algebra::Service - Algebra class for SERVICE (federation) patterns
VERSION
This document describes RDF::Query::Algebra::Service version 2.919.
METHODS
Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.
new ( $endpoint, $pattern, $silent )-
Returns a new Service structure.
construct_args-
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
endpoint-
Returns the endpoint resource of the named graph expression.
pattern-
Returns the graph pattern of the named graph expression.
silent-
Returns true if the service operation is to ignore errors during execution.
lhs-
If the SERVCE operation uses a variable endpoint, then it is considered a binary operator, executing the left-hand-side pattern first, and using results from it to bind endpoint URL values to use in SERVICE evaluation.
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).
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.
qualify_uris ( \%namespaces, $base_uri )-
Returns a new algebra pattern where all referenced Resource nodes representing QNames (ns:local) are qualified using the supplied %namespaces.
AUTHOR
Gregory Todd Williams <gwilliams@cpan.org>