class SPARQL::Algebra::Operator::Load
The SPARQL
UPDATE `load` operator.
The LOAD operation reads an RDF
document from a IRI
and inserts its triples into the specified graph in the Graph
Store. The specified destination graph should be created if required; again, implementations providing an update service over a fixed set of graphs must return with failure for a request that would create a disallowed graph. If
the destination graph already exists, then no data in that graph will be removed.
@example
(load <remote> <g>)
Constants
- NAME
Public Instance Methods
execute(queryable, **options)
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Executes this upate on the given `writable` graph or repository.
@param [RDF::Queryable] queryable
the graph or repository to write
@param [Hash{Symbol => Object}] options
any additional keyword options
@option options [Boolean] debug
Query execution debugging
@return [RDF::Queryable]
Returns queryable.
@raise [IOError]
If `from` does not exist, unless the `silent` operator is present
@see www.w3.org/TR/sparql11-update/
# File lib/sparql/algebra/operator/load.rb, line 32 def execute(queryable, **options) debug(options) {"Load"} silent = operands.first == :silent operands.shift if silent raise ArgumentError, "load expected one or two operands, got #{operands.length}" unless [1,2].include?(operands.length) location, name = operands queryable.load(location, graph_name: name) rescue IOError, Errno::ENOENT raise unless silent ensure queryable end