Class: RDF::Query::HashPatternNormalizer
- Defined in:
- vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/query/hash_pattern_normalizer.rb
Overview
An RDF query pattern normalizer.
Defined Under Namespace
Classes: Counter
Instance Attribute Summary collapse
-
#options ⇒ Hash{Symbol => Object}
readonly
The options for this hash pattern normalizer.
Class Method Summary collapse
-
.normalize!(hash_pattern, **options) ⇒ Hash{Symbol => Object}
Returns the normalization of the specified
hash_pattern
.
Instance Method Summary collapse
-
#initialize(**options) ⇒ HashPatternNormalizer
constructor
A new instance of HashPatternNormalizer.
-
#normalize!(hash_pattern) ⇒ Hash{Symbol => Object}
Equivalent to calling
self.class.normalize!(hash_pattern, self.options)
.
Constructor Details
#initialize(**options) ⇒ HashPatternNormalizer
Returns a new instance of HashPatternNormalizer.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/query/hash_pattern_normalizer.rb', line 178 def initialize(**) @options = .dup end |
Instance Attribute Details
Class Method Details
.normalize!(hash_pattern, **options) ⇒ Hash{Symbol => Object}
Returns the normalization of the specified hash_pattern
.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/query/hash_pattern_normalizer.rb', line 89 def normalize!(*args) hash_pattern = args.shift = args.shift || {} anonymous_subject_format = .fetch(:anonymous_subject_format, '__%s__') raise ArgumentError, "invalid hash pattern: #{hash_pattern.inspect}" unless hash_pattern.is_a?(Hash) counter = RDF::Query::HashPatternNormalizer::Counter.new hash_pattern.inject({}) { |acc, pair| subject, predicate_to_object = pair ensure_absence_of_duplicate_subjects!(acc, subject) normalized_predicate_to_object = normalize_hash!(predicate_to_object, acc, counter, anonymous_subject_format) ensure_absence_of_duplicate_subjects!(acc, subject) acc[subject] = normalized_predicate_to_object acc } end |
Instance Method Details
#normalize!(hash_pattern) ⇒ Hash{Symbol => Object}
Equivalent to calling self.class.normalize!(hash_pattern, self.options)
.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/query/hash_pattern_normalizer.rb', line 189 def normalize!(hash_pattern) self.class.normalize!(hash_pattern, @options) end |