Added possibility to create model objects without json data

force_bdss/core_plugins/csv_extractor/csv_extractor/csv_extractor_bundle.py

@@ -11,8 +11,11 @@ from .csv_extractor_data_source import CSVExtractorDataSource
 class CSVExtractorBundle(HasStrictTraits):
     name = String("csv_extractor")
 
-    def create_model(self, model_data):
-        return CSVExtractorModel.from_json(model_data)
+    def create_model(self, model_data=None):
+        if model_data is None:
+            return CSVExtractorModel()
+        else:
+            return CSVExtractorModel.from_json(model_data)
 
     def create_data_source(self, application, model):
         return CSVExtractorDataSource(self, application, model)

force_bdss/core_plugins/test_kpi/kpi_adder/kpi_adder_bundle.py

@@ -11,8 +11,11 @@ from .kpi_adder_calculator import KPIAdderCalculator
 class KPIAdderBundle(HasStrictTraits):
     name = String("kpi_adder")
 
-    def create_model(self, model_data):
-        return KPIAdderModel.from_json(model_data)
+    def create_model(self, model_data=None):
+        if model_data is None:
+            return KPIAdderModel()
+        else:
+            return KPIAdderModel.from_json(model_data)
 
     def create_data_source(self, application, model):
         return KPIAdderCalculator(self, application, model)

force_bdss/core_plugins/test_mco/dakota/dakota_bundle.py

@@ -14,8 +14,11 @@ from .dakota_optimizer import DakotaOptimizer
 class DakotaBundle(HasStrictTraits):
     name = String("dakota")
 
-    def create_model(self, model_data):
-        return DakotaModel.from_json(model_data)
+    def create_model(self, model_data=None):
+        if model_data is None:
+            return DakotaModel()
+        else:
+            return DakotaModel.from_json(model_data)
 
     def create_optimizer(self, application, model):
         return DakotaOptimizer(self, application, model)

force_bdss/data_sources/i_data_source_bundle.py

@@ -7,5 +7,5 @@ class IDataSourceBundle(Interface):
     def create_data_source(self, application, model):
         pass
 
-    def create_model(self, model_data):
+    def create_model(self, model_data=None):
         pass

force_bdss/kpi/i_kpi_calculator_bundle.py

@@ -7,5 +7,5 @@ class IKPICalculatorBundle(Interface):
     def create_kpi_calculator(self, application, model):
         pass
 
-    def create_model(self, model_data):
+    def create_model(self, model_data=None):
         pass

force_bdss/mco/i_multi_criteria_optimizer_bundle.py

@@ -7,7 +7,7 @@ class IMultiCriteriaOptimizerBundle(Interface):
     def create_optimizer(self, application, model):
         pass
 
-    def create_model(self, model_data):
+    def create_model(self, model_data=None):
         pass
 
     def create_communicator(self, model_data):