def allowDeletion(store, tableClass, comparisonFactory):
"""
Returns a C{bool} indicating whether deletion of an item or items of a
particular item type should be allowed to proceed.
@param tableClass: An L{Item} subclass.
@param comparison: A one-argument callable taking an attribute and
returning an L{iaxiom.IComparison} describing the items to
collect.
@return: A C{bool} indicating whether deletion should be allowed.
"""
for cascadingAttr in _disallows.get(tableClass, []) + _disallows.get(None, []):
for cascadedItem in store.query(cascadingAttr.type, comparisonFactory(cascadingAttr), limit=1):
return False
return True
def allowDeletion(store, tableClass, comparisonFactory):
"""
Returns a C{bool} indicating whether deletion of an item or items of a
particular item type should be allowed to proceed.
@param tableClass: An L{Item} subclass.
@param comparison: A one-argument callable taking an attribute and
returning an L{iaxiom.IComparison} describing the items to
collect.
@return: A C{bool} indicating whether deletion should be allowed.
"""
for cascadingAttr in (_disallows.get(tableClass, []) +
_disallows.get(None, [])):
for cascadedItem in store.query(cascadingAttr.type,
comparisonFactory(cascadingAttr),
limit=1):
return False
return True