Create preprocessing request with density estimator and relative extrema finder.

cml/controller/api.py

@@ -3,11 +3,23 @@
 """
 from os.path import join, expanduser
 
-from cml.usecases.query import PreprocessUsecase, KnowledgeSearchUsecase
+from cml.usecases.query import (
+    PreprocessUsecase,
+    KnowledgeSearchUsecase,
+    CreateConstructorUsecase
+)
 from cml.ports.source_adapters import PandasAdapter
 from cml.shared.settings import Settings
 from cml.shared.settings import specific_settings_factory, read_settings
-from cml.shared.request import PreprocessRequest, KnowledgeSearchRequest
+from cml.shared.request import (
+    PreprocessRequest,
+    KnowledgeSearchRequest,
+    CreateConstructorRequest
+)
+from cml.ports.scikit_adapter import (
+    KernelDensityEstimator,
+    find_relative_extrema
+)
 
 
 __all__ = (
@@ -51,9 +63,14 @@ def get_data_source():
     preprocessing_settings = specific_settings_factory("preprocessing")
     block_processing_settings = specific_settings_factory("block_processing")
     source_adapter = PandasAdapter.read_csv_data(general_settings.input_file)
+    density_estimator = KernelDensityEstimator()
+    relative_extrema = find_relative_extrema
+
     preprocessing_req = PreprocessRequest(source_adapter,
                                           preprocessing_settings,
-                                          block_processing_settings)
+                                          block_processing_settings,
+                                          density_estimator,
+                                          relative_extrema)
     preprocessing_usecase = PreprocessUsecase()
     return preprocessing_usecase.execute(preprocessing_req)