Add extra description support

Author: johnf

lib/oai/provider.rb

@@ -186,7 +186,7 @@ class Base
 
     class << self
       attr_reader :formats
-      attr_accessor :name, :url, :prefix, :email, :delete_support, :granularity, :model, :identifier
+      attr_accessor :name, :url, :prefix, :email, :delete_support, :granularity, :model, :identifier, :description
 
       def register_format(format)
         @formats ||= {}
@@ -221,6 +221,7 @@ def inherited(klass)
       alias_method :update_granularity, :granularity=     
       alias_method :source_model,       :model=
       alias_method :sample_id,          :identifier=
+      alias_method :extra_description,  :description=
 
     end
 

lib/oai/provider/response/identify.rb

@@ -24,7 +24,11 @@ def to_xml
               r.sampleIdentifier "#{provider.prefix}:#{provider.identifier}"
             end
           end
+          if provider.description
+            r.target! << provider.description
+          end
         end
+
       end
     end
 

test/provider/tc_provider.rb

@@ -5,6 +5,13 @@ class OaiTest < Test::Unit::TestCase
   def setup
     @mapped_provider = MappedProvider.new
     @big_provider = BigProvider.new
+    @described_provider = DescribedProvider.new
+  end
+
+  def test_additional_description
+    doc = REXML::Document.new(@described_provider.identify)
+    assert_equal "oai:test:13900", doc.elements['OAI-PMH/Identify/description/oai-identifier/sampleIdentifier'].text
+    assert_not_nil doc.elements['OAI-PMH/Identify/my_custom_xml']
   end
 
   def test_list_identifiers_for_correct_xml

test/provider/test_helper.rb

@@ -33,4 +33,13 @@ class ComplexProvider < Provider::Base
   repository_url 'http://localhost'
   record_prefix 'oai:test'
   source_model ComplexModel.new(100)
-end
+end
+
+class DescribedProvider < Provider::Base
+  repository_name 'Described PRovider'
+  repository_url 'http://localhost'
+  record_prefix 'oai:test'
+  source_model SimpleModel.new
+  sample_id '13900'
+  extra_description "<my_custom_xml />"
+end