1 files changed, 55 insertions, 0 deletions
diff --git a/django/validationmanager/utils/keyawaredefaultdict.py b/django/validationmanager/utils/keyawaredefaultdict.py
new file mode 100755
index 0000000..b9a8254
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+++ b/django/validationmanager/utils/keyawaredefaultdict.py
@@ -0,0 +1,55 @@
+#  
+# ============LICENSE_START========================================== 
+# org.onap.vvp/engagementmgr
+# ===================================================================
+# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+# ===================================================================
+#
+# Unless otherwise specified, all software contained herein is licensed
+# under the Apache License, Version 2.0 (the “License”);
+# you may not use this software 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.
+#
+#
+#
+# Unless otherwise specified, all documentation contained herein is licensed
+# under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
+# you may not use this documentation except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#             https://creativecommons.org/licenses/by/4.0/
+#
+# Unless required by applicable law or agreed to in writing, documentation
+# 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.
+#
+# ============LICENSE_END============================================
+#
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+from collections import defaultdict
+
+
+class KeyAwareDefaultDict(defaultdict):
+    """A defaultdict whose missing-key factory is passed the missing key as its only argument.
+
+    See https://docs.python.org/3/library/collections.html#defaultdict-objects
+
+    """
+
+    def __missing__(self, key):
+        # This code is modified copypasta from help(collections.defaultdict.__missing__).
+        # Unfortunately there is no simpler way to override its behavior.
+        if self.default_factory is None:
+            raise KeyError((key,))
+        self[key] = value = self.default_factory(key)
+        return value