pickling working for array-likes, but observers not yet connected back

GPy/core/parameterization/array_core.py

@@ -1,7 +1,7 @@
 # Copyright (c) 2012, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-__updated__ = '2013-12-16'
+__updated__ = '2014-03-17'
 
 import numpy as np
 from parameter_core import Observable
@@ -18,7 +18,7 @@ class ObservableArray(np.ndarray, Observable):
         if not isinstance(input_array, ObservableArray):
             obj = np.atleast_1d(np.require(input_array, dtype=np.float64, requirements=['W', 'C'])).view(cls)
         else: obj = input_array
-        cls.__name__ = "ObservableArray\n     "
+        cls.__name__ = "ObsAr" # because of fixed printing of `array` in np printing
         super(ObservableArray, obj).__init__(*a, **kw)
         return obj
 
@@ -30,6 +30,14 @@ class ObservableArray(np.ndarray, Observable):
     def __array_wrap__(self, out_arr, context=None):
         return out_arr.view(np.ndarray)
 
+    def __reduce__(self):
+        func, args, state = np.ndarray.__reduce__(self)
+        return func, args, (state, Observable._getstate(self))
+
+    def __setstate__(self, state):
+        np.ndarray.__setstate__(self, state[0])
+        Observable._setstate(self, state[1])
+
     def _s_not_empty(self, s):
         # this checks whether there is something picked by this slice.
         return True

GPy/core/parameterization/param.py

@@ -269,6 +269,8 @@ class Param(OptimizationHandlable, ObservableArray):
     @property
     def _ties_str(self):
         return ['']
+    def _ties_for(self, ravi):
+        return [['N/A']]*ravi.size
     def __repr__(self, *args, **kwargs):
         name = "\033[1m{x:s}\033[0;0m:\n".format(
                             x=self.hierarchy_name())
@@ -312,7 +314,7 @@ class Param(OptimizationHandlable, ObservableArray):
         ravi = self._raveled_index(filter_)
         if constr_matrix is None: constr_matrix = self.constraints.properties_for(ravi)
         if prirs is None: prirs = self.priors.properties_for(ravi)
-        if ties is None: ties = [['N/A']]*self.size
+        if ties is None: ties = self._ties_for(ravi)
         ties = [' '.join(map(lambda x: x, t)) for t in ties]
         if lc is None: lc = self._max_len_names(constr_matrix, __constraints_name__)
         if lx is None: lx = self._max_len_values()

GPy/core/parameterization/parameter_core.py

@@ -16,7 +16,7 @@ Observable Pattern for patameterization
 from transformations import Transformation, Logexp, NegativeLogexp, Logistic, __fixed__, FIXED, UNFIXED
 import numpy as np
 
-__updated__ = '2014-03-14'
+__updated__ = '2014-03-17'
 
 class HierarchyError(Exception):
     """
@@ -56,7 +56,7 @@ class InterfacePickleFunctions(object):
         """
         raise NotImplementedError, "To be able to use pickling you need to implement this method"
 
-class Pickleable(object):
+class Pickleable(InterfacePickleFunctions):
     """
     Make an object pickleable (See python doc 'pickling').
 
@@ -95,7 +95,7 @@ class Pickleable(object):
     def _has_get_set_state(self):
         return '_getstate' in vars(self.__class__) and '_setstate' in vars(self.__class__)
 
-class Observable(InterfacePickleFunctions):
+class Observable(Pickleable):
     """
     Observable pattern for parameterization.
 
@@ -155,6 +155,7 @@ class Observable(InterfacePickleFunctions):
 
     def _getstate(self):
         return [self._observer_callables_]
+
     def _setstate(self, state):
         self._observer_callables_ = state.pop()