Class: RDF::N3::Algebra::List::In
- Inherits:
-
RDF::N3::Algebra::ListOperator
- Object
- SPARQL::Algebra::Operator
- SPARQL::Algebra::Operator::Binary
- RDF::N3::Algebra::ListOperator
- RDF::N3::Algebra::List::In
- Defined in:
- vendor/bundler/ruby/3.3.0/bundler/gems/rdf-n3-a6ef81a7e1ce/lib/rdf/n3/algebra/list/in.rb
Overview
Iff the object is a list and the subject is in that list, then this is true.
Constant Summary collapse
Constants included from Util::Logger
Constants inherited from SPARQL::Algebra::Operator::Binary
SPARQL::Algebra::Operator::Binary::ARITY
Constants inherited from SPARQL::Algebra::Operator
SPARQL::Algebra::Operator::ARITY, SPARQL::Algebra::Operator::IsURI
Constants included from SPARQL::Algebra::Expression
SPARQL::Algebra::Expression::PATTERN_PARENTS
Instance Attribute Summary
Attributes included from Enumerable
Attributes included from SPARQL::Algebra::Query
Attributes inherited from SPARQL::Algebra::Operator
Instance Method Summary collapse
-
#execute(queryable, solutions:, **options) ⇒ RDF::Query::Solutions
Evaluates this operator using the given variable
bindings
.
Methods inherited from RDF::N3::Algebra::ListOperator
#as_literal, #input_operand, #resolve, #validate
Methods included from Builtin
#each, #evaluate, #hash, #input_operand, #rank, #to_uri
Methods included from Util::Logger
#log_debug, #log_depth, #log_error, #log_fatal, #log_info, #log_recover, #log_recovering?, #log_statistics, #log_warn, #logger
Methods included from Enumerable
add_entailment, #canonicalize, #canonicalize!, #dump, #each_graph, #each_object, #each_predicate, #each_quad, #each_statement, #each_subject, #each_term, #each_triple, #entail, #enum_graph, #enum_object, #enum_predicate, #enum_quad, #enum_statement, #enum_subject, #enum_term, #enum_triple, #graph?, #graph_names, #invalid?, #method_missing, #object?, #objects, #predicate?, #predicates, #project_graph, #quad?, #quads, #respond_to_missing?, #statement?, #statements, #subject?, #subjects, #supports?, #term?, #terms, #to_a, #to_h, #to_set, #triple?, #triples, #valid?, #validate!
Methods included from Util::Aliasing::LateBound
Methods included from Isomorphic
#bijection_to, #isomorphic_with?
Methods included from Countable
Methods included from SPARQL::Algebra::Update
#graph_name=, #unshift, #variables
Methods included from SPARQL::Algebra::Query
#each_solution, #empty?, #failed?, #graph_name=, #matched?, #query_yields_boolean?, #query_yields_solutions?, #query_yields_statements?, #unshift, #variables
Methods inherited from SPARQL::Algebra::Operator::Binary
Methods inherited from SPARQL::Algebra::Operator
#aggregate?, arity, base_uri, #base_uri, base_uri=, #bind, #boolean, #constant?, #deep_dup, #each_descendant, #eql?, #evaluatable?, evaluate, #executable?, #first_ancestor, for, #formulae, #initialize, #inspect, #mergable?, #ndvars, #node?, #operand, #optimize, #optimize!, #parent, #parent=, prefixes, #prefixes, prefixes=, #rewrite, #to_binary, #to_sparql, to_sparql, #to_sxp, #to_sxp_bin, #validate!, #variable?, #variables, #vars
Methods included from SPARQL::Algebra::Expression
cast, #constant?, #evaluate, extension, extension?, extensions, for, #invalid?, new, #node?, open, #optimize, #optimize!, parse, register_extension, #to_sxp_bin, #valid?, #validate!, #variable?
Constructor Details
This class inherits a constructor from SPARQL::Algebra::Operator::Binary
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class RDF::Enumerable
Instance Method Details
#execute(queryable, solutions:, **options) ⇒ RDF::Query::Solutions
Evaluates this operator using the given variable bindings
.
If the first operand is a variable, it creates a solution for each element in the list.
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 |
# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-n3-a6ef81a7e1ce/lib/rdf/n3/algebra/list/in.rb', line 20 def execute(queryable, solutions:, **) RDF::Query::Solutions(solutions.map do |solution| subject = operand(0).evaluate(solution.bindings, formulae: formulae) || operand(0) # Might be a variable or node evaluating to a list in queryable, or might be a list with variables list = operand(1).evaluate(solution.bindings, formulae: formulae) next unless list # If it evaluated to a BNode, re-expand as a list list = RDF::N3::List.try_list(list, queryable).evaluate(solution.bindings, formulae: formulae) log_debug(NAME) {"subject: #{subject.to_sxp}, list: #{list.to_sxp}"} unless list.list? && list.valid? log_error(NAME) {"operand is not a list: #{list.to_sxp}"} next end if subject.variable? # Bind all list entries to this solution, creates an array of solutions list.to_a.map do |term| solution.merge(subject.to_sym => term) end elsif list.to_a.include?(subject) solution else nil end end.flatten.compact.uniq) end |