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diff --git a/sca-cpp/branches/lightweight-sca/hosting/server/composites.py b/sca-cpp/branches/lightweight-sca/hosting/server/composites.py
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+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you 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.
+
+# App composites collection implementation
+from time import strftime
+from util import *
+from sys import debug
+
+# Convert an id to a composite id
+def compid(id):
+    return ("apps", car(id), "app.composite")
+
+# Put a composite into the composite db
+def put(id, comp, user, cache, apps):
+    debug('composites.py::put::id', id)
+    debug('composites.py::put::comp', comp)
+
+    # Get the requested app
+    app = apps.get(id);
+    if isNil(app) or app is None:
+        debug('composites.py::put', 'app not found', id)
+        return False
+
+    # Check app author
+    author = cadr(assoc("'author", car(app)))
+    if author != user.get(()):
+        debug('composites.py::put', 'different author', author)
+        return False
+
+    # Update the composite in the composite db
+    compentry = (("'entry", assoc("'title", car(app)), ("'id", car(id)), ("'author", user.get(())), ("'updated", strftime('%b %d, %Y')), assoc("'content", car(comp))),)
+    debug('composites.py::put::compentry', compentry)
+    return cache.put(compid(id), compentry)
+
+# Get a composite from the composite db
+def get(id, user, cache, apps):
+    debug('composites.py::get::id', id)
+    if isNil(id):
+        return (("'feed", ("'title", "Composites"), ("'id", "composites")),)
+
+    # Get the requested app
+    app = apps.get(id)
+    if isNil(app) or app is None:
+        debug('composites.py::get', 'app not found', id)
+
+        # Return a default new composite
+        return (("'entry", ("'title", car(id)), ("'id", car(id)), ("'author", user.get(())), ("'updated", strftime('%b %d, %Y'))),)
+
+    # Get the requested composite
+    comp = cache.get(compid(id));
+    if isNil(comp) or comp is None:
+        debug('composites.py::get', 'composite not found', id)
+
+        # Return a default new composite
+        return (("'entry", ("'title", car(id)), ("'id", car(id)), assoc("'author", car(app)), assoc("'updated", car(app))),)
+
+    # Return the composite
+    def updated(u):
+        return assoc("'updated", car(app)) if isNil(u) or u is None else u
+
+    compentry = (("'entry", assoc("'title", car(app)), ("'id", car(id)), assoc("'author", car(app)), updated(assoc("'updated", car(comp))), assoc("'content", car(comp))),)
+    debug('composites.py::get::compentry', compentry)
+    return compentry
+
+# Delete a composite from the composite db
+def delete(id, user, cache, apps):
+    debug('composites.py::delete::id', id)
+
+    # Get the requested app
+    app = apps.get(id);
+    if isNil(app) or app is None:
+        debug('composites.py::delete', 'app not found', id)
+        return False
+
+    # Check app author
+    author = cadr(assoc("'author", car(app)))
+    if author != user.get(()):
+        debug('composites.py::delete', 'different author', author)
+        return False
+
+    # Delete the composite
+    return cache.delete(compid(id))
+