pre-process plugin to validate the entityData of NonStarvingEntity

dream/plugins/ReadEntryData.py

+from copy import copy
+import json
+import time
+import random
+import operator
+from datetime import datetime
+
+from dream.plugins import plugin
+
+class ReadEntryData(plugin.InputPreparationPlugin):
+  """ Input preparation
+      reads the entries if any, and updates the keys of the entityData dict
+  """
+
+  def preprocess(self, data):
+    """ read the entries data and change the class key of the entityData dict to _class
+    """
+    node=data['graph']['node']
+    for stationKey, stationData in node.iteritems():
+      entityData = stationData.pop("entityData", None)
+      if entityData:
+        entityClass = entityData.pop("class", None)
+        if entityClass:
+          entityData["_class"] = entityClass
+        else:
+          entityData["_class"] = "Dream.Part"
+        stationData["entityData"] = entityData
+
+    return data
+