1 """hooks to handle attributes mapped to a custom storage

     2 """

     3 from cubicweb.server.hook import Hook

     4 from cubicweb.server.sources.storages import ETYPE_ATTR_STORAGE

     5 

     6 

     7 class BFSSHook(Hook):

     8     """abstract class for bytes file-system storage hooks"""

     9     __abstract__ = True

    10     category = 'bfss'

    11 

    12 

    13 class PreAddEntityHook(BFSSHook):

    14     """"""

    15     __regid__ = 'bfss_add_entity'

    16     events = ('before_add_entity', )

    17 

    18     def __call__(self):

    19         etype = self.entity.__regid__

    20         for attr in ETYPE_ATTR_STORAGE.get(etype, ()):

    21             ETYPE_ATTR_STORAGE[etype][attr].entity_added(self.entity, attr)

    22 

    23 class PreUpdateEntityHook(BFSSHook):

    24     """"""

    25     __regid__ = 'bfss_update_entity'

    26     events = ('before_update_entity', )

    27 

    28     def __call__(self):

    29         etype = self.entity.__regid__

    30         for attr in ETYPE_ATTR_STORAGE.get(etype, ()):

    31             ETYPE_ATTR_STORAGE[etype][attr].entity_updated(self.entity, attr)

    32 

    33 class PreDeleteEntityHook(BFSSHook):

    34     """"""

    35     __regid__ = 'bfss_delete_entity'

    36     events = ('before_delete_entity', )

    37 

    38     def __call__(self):

    39         etype = self.entity.__regid__

    40         for attr in ETYPE_ATTR_STORAGE.get(etype, ()):

    41             ETYPE_ATTR_STORAGE[etype][attr].entity_deleted(self.entity, attr)