remove some type hints to bring the support Python 3.5+

Author: Ivan Dlugos

objectbox/builder.py

@@ -6,7 +6,7 @@
 class Builder:
     def __init__(self):
         self._model = Model()
-        self._directory: str = ''
+        self._directory = ''
 
     def directory(self, path: str) -> 'Builder':
         self._directory = path

objectbox/model/entity.py

@@ -15,15 +15,15 @@ def __init__(self, cls, id: int, uid: int):
             raise Exception("invalid or no 'uid' given in the @Entity annotation")
 
         self.cls = cls
-        self.name: str = cls.__name__
+        self.name = cls.__name__
         self.id = id
         self.uid = uid
 
-        self.last_property_id: 'IdUid' = None  # set in model.entity()
+        self.last_property_id = None  # IdUid - set in model.entity()
 
-        self.properties: List[Property] = list()
-        self.offset_properties: List[Property] = list()
-        self.id_property: Property = None
+        self.properties = list()  # List[Property]
+        self.offset_properties = list()  # List[Property]
+        self.id_property = None
         self.fill_properties()
 
     def __call__(self, *args):

objectbox/model/model.py

@@ -17,7 +17,7 @@ def __bool__(self):
 
 class Model:
     def __init__(self):
-        self._entities: List[type] = list()
+        self._entities = list()
         self._c_model = obx_model_create()
         self.last_entity_id = IdUid(0, 0)
         self.last_index_id = IdUid(0, 0)

objectbox/model/properties.py

@@ -7,18 +7,18 @@ class Property:
     def __init__(self, py_type: type, id: int, uid: int):
         self._id = id
         self._uid = uid
-        self._name: str = ""  # set in Entity.fillProperties()
+        self._name = ""  # set in Entity.fillProperties()
 
-        self._py_type: type = py_type
-        self._ob_type: OBXPropertyType
+        self._fb_type = None  # flatbuffers.number_types
+        self._py_type = py_type
+        self._ob_type = OBXPropertyType(0)
         self.__set_basic_type()
 
         self._is_id = isinstance(self, Id)
-        self._flags: OBXPropertyFlags = 0
+        self._flags = OBXPropertyFlags(0)
         self.__set_flags()
 
         # FlatBuffers marshalling information
-        self._fb_type: object  # flatbuffers.number_types
         self._fb_slot = self._id - 1
         self._fb_v_offset = 4 + 2*self._fb_slot
 

tests/model.py

@@ -9,7 +9,7 @@ class TestEntity:
     int = Property(int, id=4, uid=1004)
     float = Property(float, id=5, uid=1005)
     bytes = Property(bytes, id=6, uid=1006)
-    transient: str = ""  # not "Property" so it's not stored
+    transient = ""  # not "Property" so it's not stored
 
     def __init__(self, string: str = ""):
         self.str = string