Finish 3.1.3

Author: gkellogg

VERSION

@@ -1 +1 @@
-3.1.2
+3.1.3

lib/rdf/changeset.rb

@@ -218,5 +218,12 @@ def append_statements(target, arg)
       stmts.each { |s| send(target) << s }
     end
 
+    # This simply returns its argument as a query in order to trick
+    # {RDF::Mutable#delete} into working.
+    def query(stmt)
+      RDF::Query.new RDF::Query::Pattern.from(stmt)
+    end
+
+    undef_method :load
   end # Changeset
 end # RDF

lib/rdf/vocabulary.rb

@@ -85,10 +85,15 @@ def each(&block)
       end
 
       ##
-      # A hash of all vocabularies by prefix showing relevant URI and associated vocabulary Class Name
+      # A hash of all vocabularies by prefix showing relevant URI and
+      # associated vocabulary Class Name
+      #
       # @return [Hash{Symbol => Hash{Symbol => String}}]
       def vocab_map
-        VOCABS
+        # Create an initial duplicate of RDF::VOCABS. We want to
+        # ensure the hash itself is modifiable but the values are
+        # frozen.
+        @vocab_map ||= RDF::VOCABS.transform_values(&:freeze)
       end
 
       ##
@@ -100,6 +105,36 @@ def from_sym(sym)
         RDF.const_get(sym.to_sym)
       end
 
+      ##
+      # Register a vocabulary for internal prefix lookups. Parameters
+      # of interest include `:uri`, `:class_name`, `:source`, and `:skip`.
+      #
+      # @param prefix [Symbol] the prefix to use
+      # @param vocab  [String, Class] either the URI or the vocab class
+      # @param params [Hash{Symbol => String}] Relevant parameters
+      # @return [Hash] The parameter hash, but frozen
+      def register(prefix, vocab, **params)
+        # check the input
+        raise ArgumentError, "#{prefix} must be symbol-able" unless
+          [String, Symbol].any? { |c| prefix.is_a? c }
+
+        # note an explicit uri: param overrides
+        case vocab
+        when String then params[:uri] ||= vocab
+        when Class
+          raise ArgumentError, 'vocab must be an RDF::(Strict)Vocabulary' unless
+            vocab.ancestors.include? RDF::Vocabulary
+          params[:class] = vocab
+          params[:uri] ||= vocab.to_uri.to_s
+        end
+
+        # fill in the class name
+        params[:class_name] ||= prefix.to_s.upcase
+
+        # now freeze and assign
+        vocab_map[prefix.to_s.to_sym] = params.freeze
+      end
+
       ##
       # Limits iteration over vocabularies to just those selected
       #
@@ -347,7 +382,8 @@ def expand_pname(pname)
         if prefix == "rdf"
           RDF[suffix]
         elsif vocab_detail = RDF::Vocabulary.vocab_map[prefix.to_sym]
-          vocab = RDF::Vocabulary.from_sym(vocab_detail[:class_name])
+          vocab = vocab_detail[:class] ||
+            RDF::Vocabulary.from_sym(vocab_detail[:class_name])
           suffix.to_s.empty? ? vocab.to_uri : vocab[suffix]
         else
           (RDF::Vocabulary.find_term(pname) rescue nil) || RDF::URI(pname, validate: true)

spec/vocabulary_spec.rb

@@ -858,12 +858,20 @@
       }.each do |pred, props|
         it "emits #{pred}" do
           graph = RDF::Graph.new {|g| props[:term].each_statement {|s| g << s}}
-
           expect(graph.map(&:subject)).to all(eql(props[:term]))
           expect(graph.query({predicate: props[:predicate]}).map(&:object)).to all(be_a(props[:value].class))
           expect(graph.query({predicate: props[:predicate]}).map(&:object)).to include props[:value]
         end
       end
     end
   end
+
+  context 'Vocabs outside of the RDF::Vocab namespace' do
+    uri = 'urn:x-bogus:test-vocab:'
+    TestVocab = Class.new RDF::Vocabulary(uri)
+    RDF::Vocabulary.register :testvocab, TestVocab
+    it 'correctly expands the pname of an arbitrary class' do
+      expect(RDF::Vocabulary.expand_pname('testvocab:test')).to equal(TestVocab.test)
+    end
+  end
 end