Only fetch if there's no label.

lib/oregon_digital/rdf/controlled.rb

@@ -65,6 +65,11 @@ def rdf_label
       node? ? [] : [rdf_subject.to_s]
     end
 
+    def fetch
+      return unless rdf_label == [rdf_subject.to_s] || rdf_label.empty?
+      super
+    end
+
     ##
     #  Class methods for adding and using controlled vocabularies
     module ClassMethods

spec/lib/oregon_digital/rdf/controlled_spec.rb

@@ -34,6 +34,40 @@ class DummyAuthority < ActiveFedora::Rdf::Resource
     end
   end
 
+  describe "#fetch" do
+    subject { DummyAuthority.new(uri) }
+    let(:uri) { "http://purl.org/dc/dcmitype/Image" }
+    before do
+      allow(subject).to receive(:load)
+    end
+    context "if there's a label" do
+      before do
+        subject << [subject.rdf_subject, RDF::SKOS.prefLabel, "Test"]
+        subject.fetch
+      end
+      it "should not call #load" do
+        expect(subject).not_to have_received(:load)
+      end
+    end
+    context "if there's no label" do
+      before do
+        subject.fetch
+      end
+      it "should call #load" do
+        expect(subject).to have_received(:load)
+      end
+    end
+    context "if it has no uri" do
+      let(:uri) { nil }
+      before do
+        subject.fetch
+      end
+      it "should call #load" do
+        expect(subject).to have_received(:load)
+      end
+    end
+  end
+
   describe '#list_terms' do
     it 'should list terms from registered StrictVocabs' do
       subject.vocabularies.each do |name, vocab|