Merge pull request #55 from mikofski/model_metaclass

Model metaclass

* fixes #56 
* model layers can be declared in model class as dictionaries or classes
* consolidate BasicModel into Model class
* adds BaseModel meta class

Author: mikofski

carousel/__init__.py

@@ -7,5 +7,5 @@
 __author__ = u'Mark Mikofski'
 __email__ = u'mark.mikofski@sunpowercorp.com'
 __url__ = u'https://github.com/SunPower/Carousel'
-__version__ = u'0.2.4'
-__release__ = u'Blue Balloons'
+__version__ = u'0.2.6'
+__release__ = u'Bicycle Bears'

carousel/core/calculations.py

@@ -140,6 +140,9 @@ def index_registry(args, arg_key, reg, ts, idx=None):
 
 
 class CalcBase(CommonBase):
+    """
+    Base calculation meta class.
+    """
     _path_attr = 'calcs_path'
     _file_attr = 'calcs_file'
 

carousel/core/data_sources.py

@@ -130,22 +130,22 @@ def register(self, newdata, *args, **kwargs):
 
 class DataSourceBase(CommonBase):
     """
-    Most general data source.
+    Base data source meta class.
     """
     _path_attr = 'data_path'
     _file_attr = 'data_file'
     _reader_attr = 'data_reader'
     _enable_cache_attr = 'data_cache_enabled'
 
     def __new__(mcs, name, bases, attr):
-        # use only with Calc subclasses
+        # use only with DataSource subclasses
         if not CommonBase.get_parents(bases, DataSourceBase):
             return super(DataSourceBase, mcs).__new__(mcs, name, bases, attr)
         # pop the data reader so it can be overwritten
         reader = attr.pop(mcs._reader_attr, None)
         cache_enabled = attr.pop(mcs._enable_cache_attr, None)
         meta = attr.pop('Meta', None)
-        # set param file full path if calculation path and file specified or
+        # set param file full path if data source path and file specified or
         # try to set parameters from class attributes except private/magic
         attr = mcs.set_param_file_or_parameters(attr)
         # set data-reader attribute if in subclass, otherwise read it from base

carousel/core/layers.py

@@ -27,21 +27,22 @@
 
 import importlib
 import os
-from carousel.core.simulations import SimRegistry
-from carousel.core.data_sources import DataRegistry
-from carousel.core.formulas import FormulaRegistry
-from carousel.core.calculations import CalcRegistry
-from carousel.core.outputs import OutputRegistry
+from carousel.core.simulations import SimRegistry, Simulation
+from carousel.core.data_sources import DataRegistry, DataSource
+from carousel.core.formulas import FormulaRegistry, Formula
+from carousel.core.calculations import CalcRegistry, Calc
+from carousel.core.outputs import OutputRegistry, Output
 
 
 class Layer(object):
     """
     A layer in the model.
 
-    :param layer_data: Dictionary of model data specific to this layer.
-    :type layer_data: dict
+    :param sources: Dictionary of model parameters specific to this layer.
+    :type sources: dict
     """
     reg_cls = NotImplemented  #: registry class
+    src_cls = NotImplemented  #: source class
 
     def __init__(self, sources=None):
         #: dictionary of layer sources
@@ -104,9 +105,6 @@ class Data(Layer):
     """
     The Data layer of the model.
 
-    :param data: Dictionary of model data specific to the data layer.
-    :type data: :class:`~carousel.core.data_sources.DataRegistry`
-
     The :attr:`~Layer.layer` attribute is a dictionary of data sources names
     as keys of dictionaries for each data source with the module and optionally
     the package containing the module, the filename, which can be ``None``,
@@ -115,6 +113,7 @@ class Data(Layer):
     to Carousel is used. External data files should specify the path.
     """
     reg_cls = DataRegistry  #: data layer registry
+    src_cls = DataSource  #: data layer source
 
     def add(self, data_source, module, package=None):
         """
@@ -219,6 +218,7 @@ class Formulas(Layer):
     Layer containing formulas.
     """
     reg_cls = FormulaRegistry  #: formula layer registry
+    src_cls = Formula  #: formula layer source
 
     def add(self, formula, module, package=None):
         """
@@ -259,6 +259,7 @@ class Calculations(Layer):
     Layer containing formulas.
     """
     reg_cls = CalcRegistry  #: calculations layer registry
+    src_cls = Calc  #: calculation layer source
 
     def add(self, calc, module, package=None):
         """
@@ -289,6 +290,7 @@ class Outputs(Layer):
     Layer containing output sources.
     """
     reg_cls = OutputRegistry  #: output layer registry
+    src_cls = Output  #: output layer source
 
     def add(self, output, module, package=None):
         """
@@ -318,6 +320,7 @@ class Simulations(Layer):
     Layer containing simulation sources.
     """
     reg_cls = SimRegistry  #: simulation layer registry
+    src_cls = Simulation  #: simulation layer source
 
     def add(self, sim, module, package=None):
         """