diff options
Diffstat (limited to 'lib/utils/rdf/dataset.rb')
| -rw-r--r-- | lib/utils/rdf/dataset.rb | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/utils/rdf/dataset.rb b/lib/utils/rdf/dataset.rb index b2deeb8..ab720d7 100644 --- a/lib/utils/rdf/dataset.rb +++ b/lib/utils/rdf/dataset.rb @@ -32,7 +32,7 @@ module OpenTox # Load data entries via RDF (slow) # @param [String] uri Dataset uri - # @return [Array] entries Data entries, ordered primarily over rows and secondarily over cols + # @return [Array] entries Data entries, ordered primarily over cols and secondarily over rows def self.find_data_entries_rdf(rdf) query = RDF::Query.new do pattern [:data_entry, RDF::OLO.index, :cidx] # compound index: now a free variable @@ -44,5 +44,18 @@ module OpenTox query.execute(rdf).order_by(:fidx, :cidx).collect { |s| s.val.to_s } end + # Query a dataset URI for ordered status + # by loading its metadata (OpenTox compliant) + # @param [String] uri Dataset uri + # @return [TrueClass,FalseClass] status Whether the dataset is ordered + def self.ordered?(uri) + ds = OpenTox::Dataset.new # dummy + ds.parse_rdfxml(RestClient.get([uri,"metadata"].join("/"),{:accept => "application/rdf+xml"})) + query = RDF::Query.new do + pattern [:dataset, RDF.type, RDF::OT.OrderedDataset] + end + query.execute(ds.rdf).size>0 + end + end end |