RDF::Query::Algebra::Service(3)
Algebra class for SERVICE (federation) patterns
VERSION
This document describes RDF::Query::Algebra::Service version 2.916.
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.
