Merge pull request #672 from ixcat/master

Allow disabling packing python native datatypes in blobs

Author: dimitri-yatsenko

datajoint/blob.py

@@ -12,6 +12,7 @@
 import numpy as np
 from .errors import DataJointError
 from .utils import OrderedDict
+from .settings import config
 
 
 mxClassID = OrderedDict((
@@ -71,6 +72,9 @@ def __init__(self, squeeze=False):
         self.protocol = None
 
     def set_dj0(self):
+        if not config.get('enable_python_native_blobs'):
+            raise DataJointError('v0.12+ python native blobs disabled. see also: https://github.com/datajoint/datajoint-python/blob/master/README.md')
+
         self.protocol = b"dj0\0"  # when using new blob features
 
     def squeeze(self, array, convert_to_scalar=True):

datajoint/settings.py

@@ -43,7 +43,8 @@
     'display.limit': 12,
     'display.width': 14,
     'display.show_tuple_count': True,
-    'database.use_tls': None
+    'database.use_tls': None,
+    'enable_python_native_blobs': False,  # python-native/dj0 encoding support
 })
 
 logger = logging.getLogger(__name__)