Add dreyfus.js from cloudant/couchdb@c323f1943

1 files changed, 62 insertions, 0 deletions

diff --git a/share/server/dreyfus.js b/share/server/dreyfus.js
new file mode 100644
index 000000000..7bed97352
--- /dev/null
+++ b/share/server/dreyfus.js
@@ -0,0 +1,62 @@
+// 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 Dreyfus = (function() {
+
+  var index_results = []; // holds temporary emitted values during index
+
+  function handleIndexError(err, doc) {
+    if (err == "fatal_error") {
+      throw(["error", "map_runtime_error", "function raised 'fatal_error'"]);
+    } else if (err[0] == "fatal") {
+      throw(err);
+    }
+    var message = "function raised exception " + err.toSource();
+    if (doc) message += " with doc._id " + doc._id;
+    log(message);
+  };
+
+  return {
+    index: function(name, value, options) {
+      if (typeof name !== 'string') {
+        throw({name: 'TypeError', message: 'name must be a string not ' + typeof name});
+      }
+      if (name.substring(0, 1) === '_') {
+        throw({name: 'ReservedName', message: 'name must not start with an underscore'});
+      }
+      if (typeof value !== 'string' && typeof value !== 'number' && typeof value !== 'boolean') {
+        throw({name: 'TypeError', message: 'value must be a string, a number or boolean not ' + typeof value});
+      }
+      if (options && typeof options !== 'object') {
+        throw({name: 'TypeError', message: 'options must be an object not ' + typeof options});
+      }
+      index_results.push([name, value, options || {}]);
+    },
+
+    indexDoc: function(doc) {
+      Couch.recursivelySeal(doc);
+      var buf = [];
+      for each (fun in State.funs) {
+        index_results = [];
+        try {
+          fun(doc);
+          buf.push(index_results);
+        } catch (err) {
+          handleIndexError(err, doc);
+          buf.push([]);
+        }
+      }
+      print(JSON.stringify(buf));
+    }
+
+  }
+})();