module RDF::Enumerable
Public Class Methods
add_entailment(method, proc)
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Add an entailment method. The method accepts no arguments, and returns or yields an array of values associated with the particular entailment method @param [Symbol] method @param [Proc] proc
# File lib/rdf/reasoner/extensions.rb, line 148 def add_entailment(method, proc) @@entailments[method] = proc end
Public Instance Methods
entail(*rules, &block)
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Perform entailments on this enumerable in a single pass, yielding entailed statements.
For best results, either run rules separately expanding the enumberated graph, or run repeatedly until no new statements are added to the enumerable containing both original and entailed statements. As ‘:subClassOf` and `:subPropertyOf` entailments are implicitly recursive, this may not be necessary except for extreme cases.
@overload entail
@param [Array<Symbol>] *rules Registered entailment method(s). @yield statement @yieldparam [RDF::Statement] statement @return [void]
@overload entail
@param [Array<Symbol>] *rules Registered entailment method(s) @return [Enumerator]
# File lib/rdf/reasoner/extensions.rb, line 169 def entail(*rules, &block) if block_given? rules = %w(subClassOf subPropertyOf domain range).map(&:to_sym) if rules.empty? self.each do |statement| rules.each {|rule| statement.entail(rule, &block)} end else # Otherwise, return an Enumerator with the entailed statements this = self RDF::Queryable::Enumerator.new do |yielder| this.entail(*rules) {|y| yielder << y} end end end