Add support for and indexes in Document::find_by_index.

Author: Sean Cribbs

lib/ripple/indexes.rb

@@ -54,7 +54,7 @@ def indexes_for_persistence(prefix = '')
             end
           end
         end
-    
+
         # Add this document's indexes
         self.class.indexes.each do |key, index|
           if index.block
@@ -78,13 +78,17 @@ def update_robject
       end
 
       module ClassMethods
-        # Search for a document using an indexed column 
-        # @param [Symbol] name of the index 
+        # Search for a document using an indexed column
+        # @param [Symbol] name of the index
         # @param [String, Integer, Range] query to search for
         def find_by_index(index_name, query)
-          idx = self.indexes[index_name]
-          raise ArgumentError, t('index_undefined', :property => index_name, :type => self.name) if idx.nil?
-          self.find(Ripple.client.get_index(self.bucket.name, idx.index_key, query))
+          if ["$bucket", "$key"].include?(index_name.to_s)
+            self.find(Ripple.client.get_index(self.bucket.name, index_name.to_s, query))
+          else
+            idx = self.indexes[index_name]
+            raise ArgumentError, t('index_undefined', :property => index_name, :type => self.name) if idx.nil?
+            self.find(Ripple.client.get_index(self.bucket.name, idx.index_key, query))
+          end
         end
       end
     end

spec/integration/ripple/indexes_spec.rb

@@ -32,6 +32,14 @@
       Indexer.find_by_index(:age, 10..20).should == []
     end
 
+    it "should find by the special $bucket index" do
+      Indexer.find_by_index('$bucket', Indexer.bucket.name).should =~ [@bob, @sally, @mary]
+    end
+
+    it "should find by the special $key index" do
+      Indexer.find_by_index('$key', @bob.key..@bob.key.succ).should =~ [@bob]
+    end
+
     it "should raise an error when the requested index doesn't exist" do
       lambda { Indexer.find_by_index(:hair, 'blonde') }.should raise_error(ArgumentError)
     end