[dataimport] massive_store: do not drop constraints with `cascade` since it breaks things
We want to be able to restore constraints at the end of the import. If
they are silently dropped due to a CASCADE, we can't do that.
from yams.buildobjs import ComputedRelation, EntityType, RelationDefinition
from cubicweb.schema import RRQLExpression
class Subject(EntityType):
pass
class Object(EntityType):
pass
class relation(RelationDefinition):
subject = 'Subject'
object = 'Object'
class computed(ComputedRelation):
rule = 'S relation O'
__permissions__ = {'read': (RRQLExpression('S is ET'),)}