def remove(self, remote):
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
where = (self._relation1.get_where_for_remote(self._local) &
self._relation2.get_where_for_remote(remote))
store.find(self._link_cls, where).remove()
def remove(self, remote):
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
# Don't use remote here, as it might be security proxied or something.
remote = get_obj_info(remote).get_obj()
where = (self._relation1.get_where_for_remote(self._local)
& self._relation2.get_where_for_remote(remote))
store.find(self._link_cls, where).remove()
def clear(self, *args, **kwargs):
set_kwargs = {}
for remote_column in self._relation.remote_key:
set_kwargs[remote_column.name] = None
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
where = self._relation.get_where_for_remote(self._local)
store.find(self._target_cls, where, *args, **kwargs).set(**set_kwargs)
def find(self, *args, **kwargs):
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
where = self._get_where_clause()
result = store.find(self._target_cls, where, *args, **kwargs)
if self._order_by is not None:
result.order_by(*self._order_by)
return result
def __init__(self, instance, fieldName):
self.instance = instance
self.fieldName = unicode(instance.__storm_table__) + u"." + fieldName
self.store = Store.of(instance)
if self.store is None:
raise NoStoreError("Store is needed to initialize a ForeignHelper")
self.supplement = self.store.find(
ForeignSupplement,
And((ForeignSupplement.LocalID == self.instance.ID),
(ForeignSupplement.FieldName == self.fieldName))).any()
def find(self, *args, **kwargs):
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
where = (self._relation1.get_where_for_remote(self._local) &
self._relation2.get_where_for_join())
result = store.find(self._target_cls, where, *args, **kwargs)
if self._order_by is not None:
result.order_by(self._order_by)
return result
def clear(self, *args, **kwargs):
store = Store.of(self._local)
if store is None:
raise NoStoreError("Can't perform operation without a store")
where = self._relation1.get_where_for_remote(self._local)
if args or kwargs:
filter = get_where_for_args(args, kwargs, self._target_cls)
join = self._relation2.get_where_for_join()
table = get_cls_info(self._target_cls).table
where &= Exists(Select(SQLRaw("*"), join & filter, tables=table))
store.find(self._link_cls, where).remove()
def _forceStore(self, exceptionMessage=None):
store = Store.of(self)
if store is None:
raise NoStoreError(exceptionMessage if exceptionMessage is not None
else u"A store is needed to do that.")
return store
def _get_store(self):
store = Store.of(self)
if store is None:
raise NoStoreError('Operation not possible without a store.')
return store
