Initial checkin of _changes filters. The prime weak-spot for this approach is that it maintains an OS-process per connected filtered _changes consumer. I'm pretty sure we'll be able to work around this without changing the API, but it'll involve a lot of OS-process bookkeeping. Those enhancements should generally improve show & list performance as well. Punting on them for now, first wanted to get _changes filters implemented so people could give feedback.

git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@795687 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 21 insertions, 0 deletions

diff --git a/test/query_server_spec.rb b/test/query_server_spec.rb
index ffa2635b..dfc57a5b 100644
--- a/test/query_server_spec.rb
+++ b/test/query_server_spec.rb
@@ -239,6 +239,15 @@ functions = {
           return "tail";
         };
     JS
+  },
+  "filter-basic" => {
+    "js" => <<-JS
+      function(doc, req, userCtx) {
+        if (doc.good) {
+          return true;
+        }
+      }
+    JS
   }
 }
 
@@ -420,6 +429,18 @@ describe "query server normal case" do
         should == true
     end
   end
+  
+  describe "changes filter" do
+    before(:all) do
+      @fun = functions["filter-basic"][LANGUAGE]
+      @qs.reset!
+      @qs.add_fun(@fun).should == true
+    end
+    it "should only return true for good docs" do
+      @qs.run(["filter", [{"key"=>"bam", "good" => true}, {"foo" => "bar"}, {"good" => true}]]).
+        should ==  [true, [true, false, true]]
+    end
+  end
 end
 
 def should_have_exited qs