Merge pull request #378 from simphony/uid_datasets

Problem: datasets do not have uids

simphony/cuds/lattice.py

@@ -1,3 +1,4 @@
+import uuid
 import numpy as np
 
 from ..core import CUBA
@@ -37,6 +38,11 @@ def __init__(self, name, primitive_cell, size, origin):
         self._items_count = {
             CUBA.NODE: lambda: self._size
         }
+        self._uid = uuid.uuid4()
+
+    @property
+    def uid(self):
+        return self._uid
 
     def count_of(self, item_type):
         """ Return the count of item_type in the container.

simphony/cuds/mesh.py

@@ -66,6 +66,12 @@ def __init__(self, name):
             CUBA.CELL: lambda: self._cells
         }
 
+        self._uid = uuid.uuid4()
+
+    @property
+    def uid(self):
+        return self._uid
+
     @property
     def data(self):
         return dc.DataContainer(self._data)

simphony/cuds/particles.py

@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 import uuid
 
-from ..core import CUBA
-from ..core.data_container import DataContainer
 from . import ABCParticles
 from .particles_items import Particle, Bond
+from ..core import CUBA
+from ..core.data_container import DataContainer
 
 
 class Particles(ABCParticles):
@@ -43,6 +43,12 @@ def __init__(self, name):
             CUBA.BOND: lambda: self._bonds
         }
 
+        self._uid = uuid.uuid4()
+
+    @property
+    def uid(self):
+        return self._uid
+
     @property
     def data(self):
         return DataContainer(self._data)

simphony/cuds/tests/test_meta_class.py

@@ -352,8 +352,8 @@ def test_NoseHooverBoundary(self):
         nose_hoover = meta_class.NoseHoover(material=[material])
         self.assertIsNotNone(nose_hoover.data)
 
-    def test_not_sharing_mutable(self):
-        box1 = meta_class.Box()
-        box2 = meta_class.Box()
-        box1.vector[0][0] = 3.
-        self.assertNotEqual(box1.vector[0][0], box2.vector[0][0])
+    def test_whether_data_is_reference(self):
+        material = meta_class.Material()
+        data = material.data
+
+        self.assertEqual(data, material.data)