From 46bf4b727f0fae37b017f194983122c50d3f34e5 Mon Sep 17 00:00:00 2001
From: John Christopher Anderson <jchris@apache.org>
Date: Mon, 20 Jul 2009 04:11:36 +0000
Subject: 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
---
 share/server/filter.js | 25 +++++++++++++++++++++++++
 share/server/loop.js   |  3 ++-
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 share/server/filter.js

(limited to 'share/server')

diff --git a/share/server/filter.js b/share/server/filter.js
new file mode 100644
index 00000000..23536db0
--- /dev/null
+++ b/share/server/filter.js
@@ -0,0 +1,25 @@
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+var Filter = {
+  filter : function(docs, req, userCtx) {
+    var results = [];
+    try {
+      for (var i=0; i < docs.length; i++) {
+        results.push((funs[0](docs[i], req, userCtx) && true) || false);
+      };
+      respond([true, results]);
+    } catch (error) {
+      respond(error);
+    }
+  }
+};
diff --git a/share/server/loop.js b/share/server/loop.js
index d65ff02b..af656121 100644
--- a/share/server/loop.js
+++ b/share/server/loop.js
@@ -41,7 +41,8 @@ var dispatch = {
   "rereduce" : Views.rereduce,
   "validate" : Validate.validate,
   "show"     : Render.show,
-  "list"     : Render.list
+  "list"     : Render.list,
+  "filter"   : Filter.filter
 };
 
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