Github user mxmrlv commented on a diff in the pull request:
https://github.com/apache/incubator-ariatosca/pull/62#discussion_r98484829
--- Diff: aria/storage/type.py ---
@@ -74,16 +125,115 @@ def coerce(cls, key, value):
raise exceptions.StorageError('SQL Storage error:
{0}'.format(str(e)))
+class _StrictListMixin(object):
+ ANY_TYPE = 'any_type'
+
+ _item_cls = ANY_TYPE
+
+ @classmethod
+ def coerce(cls, key, value):
+ "Convert plain dictionaries to MutableDict."
+ try:
+ if not isinstance(value, cls):
+ if isinstance(value, list):
+ for item in value:
+ cls._assert_item(item)
+ return cls(value)
+ return mutable.MutableList.coerce(key, value)
+ else:
+ return value
+ except ValueError as e:
+ raise exceptions.StorageError('SQL Storage error:
{0}'.format(str(e)))
+
+ def __setitem__(self, index, value):
+ """Detect list set events and emit change events."""
+ self._assert_item(value)
+ super(_StrictListMixin, self).__setitem__(index, value)
+
+ def append(self, item):
+ self._assert_item(item)
+ super(_StrictListMixin, self).append(item)
+
+ def extend(self, item):
+ self._assert_item(item)
+ super(_StrictListMixin, self).extend(item)
+
+ def insert(self, index, item):
+ self._assert_item(item)
+ super(_StrictListMixin, self).insert(index, item)
+
+ @classmethod
+ def _assert_item(cls, item):
+ if cls._item_cls is not None and not isinstance(item,
cls._item_cls):
+ raise exceptions.StorageError("Key type was set strictly to
{0}, but was {1}".format(
+ cls._item_cls, type(item)
+ ))
+
+
class _MutableList(mutable.MutableList):
@classmethod
def coerce(cls, key, value):
"Convert plain dictionaries to MutableDict."
+
try:
- return mutable.MutableList.coerce(key, value)
+ if not isinstance(value, cls):
--- End diff --
try to remove
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