def propagate_rule(self, event, delta_rule):
"""Propagate event and delta_rule.
Compute and enqueue new events generated by EVENT and DELTA_RULE.
"""
self.log(event.formula.table.table, "Processing event %s with rule %s", event, delta_rule)
# compute tuples generated by event (either for insert or delete)
# print "event: {}, event.tuple: {},
# event.tuple.rawtuple(): {}".format(
# str(event), str(event.tuple), str(event.tuple.raw_tuple()))
# binding_list is dictionary
# Save binding for delta_rule.trigger; throw away binding for event
# since event is ground.
binding = self.new_bi_unifier()
assert compile.is_literal(delta_rule.trigger)
assert compile.is_literal(event.formula)
undo = self.bi_unify(delta_rule.trigger, binding, event.formula, self.new_bi_unifier(), self.name)
if undo is None:
return
self.log(event.formula.table.table, "binding list for event and delta-rule trigger: %s", binding)
bindings = self.top_down_evaluation(delta_rule.variables(), delta_rule.body, binding)
self.log(event.formula.table.table, "new bindings after top-down: %s", ",".join([str(x) for x in bindings]))
if delta_rule.trigger.is_negated():
insert_delete = not event.insert
else:
insert_delete = event.insert
self.process_new_bindings(bindings, delta_rule.head, insert_delete, delta_rule.original)
def propagate_rule(self, event, delta_rule):
"""Propagate event and delta_rule.
Compute and enqueue new events generated by EVENT and DELTA_RULE.
"""
self.log(event.formula.table, "Processing event %s with rule %s",
event, delta_rule)
# compute tuples generated by event (either for insert or delete)
# print "event: {}, event.tuple: {},
# event.tuple.rawtuple(): {}".format(
# str(event), str(event.tuple), str(event.tuple.raw_tuple()))
# binding_list is dictionary
# Save binding for delta_rule.trigger; throw away binding for event
# since event is ground.
binding = self.new_bi_unifier()
assert compile.is_literal(delta_rule.trigger)
assert compile.is_literal(event.formula)
undo = self.bi_unify(delta_rule.trigger, binding, event.formula,
self.new_bi_unifier(), self.name)
if undo is None:
return
self.log(event.formula.table,
"binding list for event and delta-rule trigger: %s", binding)
bindings = self.top_down_evaluation(delta_rule.variables(),
delta_rule.body, binding)
self.log(event.formula.table, "new bindings after top-down: %s",
",".join([str(x) for x in bindings]))
if delta_rule.trigger.is_negated():
insert_delete = not event.insert
else:
insert_delete = event.insert
self.process_new_bindings(bindings, delta_rule.head, insert_delete,
delta_rule.original)
def test_type_checkers(self):
"""Test the type checkers, e.g. is_atom, is_rule."""
atom = compile.Literal("p", [])
atom2 = compile.Literal("q", [])
atom3 = compile.Literal("r", [])
lit = compile.Literal("r", [], negated=True)
regular_rule = compile.Rule(atom, [atom2, atom3])
regular_rule2 = compile.Rule(atom, [lit, atom2])
multi_rule = compile.Rule([atom, atom2], [atom3])
fake_rule = compile.Rule([atom, 1], [atom2])
fake_rule2 = compile.Rule(atom, [atom2, 1])
# is_atom
self.assertTrue(compile.is_atom(atom))
self.assertTrue(compile.is_atom(atom2))
self.assertTrue(compile.is_atom(atom3))
self.assertFalse(compile.is_atom(lit))
self.assertFalse(compile.is_atom(regular_rule))
self.assertFalse(compile.is_atom(regular_rule2))
self.assertFalse(compile.is_atom(multi_rule))
self.assertFalse(compile.is_atom(fake_rule))
self.assertFalse(compile.is_atom(fake_rule2))
self.assertFalse(compile.is_atom("a string"))
# is_literal
self.assertTrue(compile.is_literal(atom))
self.assertTrue(compile.is_literal(atom2))
self.assertTrue(compile.is_literal(atom3))
self.assertTrue(compile.is_literal(lit))
self.assertFalse(compile.is_literal(regular_rule))
self.assertFalse(compile.is_literal(regular_rule2))
self.assertFalse(compile.is_literal(multi_rule))
self.assertFalse(compile.is_literal(fake_rule))
self.assertFalse(compile.is_literal(fake_rule2))
self.assertFalse(compile.is_literal("a string"))
# is_regular_rule
self.assertFalse(compile.is_regular_rule(atom))
self.assertFalse(compile.is_regular_rule(atom2))
self.assertFalse(compile.is_regular_rule(atom3))
self.assertFalse(compile.is_regular_rule(lit))
self.assertTrue(compile.is_regular_rule(regular_rule))
self.assertTrue(compile.is_regular_rule(regular_rule2))
self.assertFalse(compile.is_regular_rule(multi_rule))
self.assertFalse(compile.is_regular_rule(fake_rule))
self.assertFalse(compile.is_regular_rule(fake_rule2))
self.assertFalse(compile.is_regular_rule("a string"))
# is_multi_rule
self.assertFalse(compile.is_multi_rule(atom))
self.assertFalse(compile.is_multi_rule(atom2))
self.assertFalse(compile.is_multi_rule(atom3))
self.assertFalse(compile.is_multi_rule(lit))
self.assertFalse(compile.is_multi_rule(regular_rule))
self.assertFalse(compile.is_multi_rule(regular_rule2))
self.assertTrue(compile.is_multi_rule(multi_rule))
self.assertFalse(compile.is_multi_rule(fake_rule))
self.assertFalse(compile.is_multi_rule(fake_rule2))
self.assertFalse(compile.is_multi_rule("a string"))
# is_rule
self.assertFalse(compile.is_rule(atom))
self.assertFalse(compile.is_rule(atom2))
self.assertFalse(compile.is_rule(atom3))
self.assertFalse(compile.is_rule(lit))
self.assertTrue(compile.is_rule(regular_rule))
self.assertTrue(compile.is_rule(regular_rule2))
self.assertTrue(compile.is_rule(multi_rule))
self.assertFalse(compile.is_rule(fake_rule))
self.assertFalse(compile.is_rule(fake_rule2))
self.assertFalse(compile.is_rule("a string"))
# is_datalog
self.assertTrue(compile.is_datalog(atom))
self.assertTrue(compile.is_datalog(atom2))
self.assertTrue(compile.is_datalog(atom3))
self.assertFalse(compile.is_datalog(lit))
self.assertTrue(compile.is_datalog(regular_rule))
self.assertTrue(compile.is_datalog(regular_rule2))
self.assertFalse(compile.is_datalog(multi_rule))
self.assertFalse(compile.is_datalog(fake_rule))
self.assertFalse(compile.is_datalog(fake_rule2))
self.assertFalse(compile.is_datalog("a string"))
# is_extended_datalog
self.assertTrue(compile.is_extended_datalog(atom))
self.assertTrue(compile.is_extended_datalog(atom2))
self.assertTrue(compile.is_extended_datalog(atom3))
self.assertFalse(compile.is_extended_datalog(lit))
self.assertTrue(compile.is_extended_datalog(regular_rule))
self.assertTrue(compile.is_extended_datalog(regular_rule2))
self.assertTrue(compile.is_extended_datalog(multi_rule))
self.assertFalse(compile.is_extended_datalog(fake_rule))
self.assertFalse(compile.is_extended_datalog(fake_rule2))
self.assertFalse(compile.is_extended_datalog("a string"))
def test_type_checkers(self):
"""Test the type checkers, e.g. is_atom, is_rule."""
atom = compile.Literal("p", [])
atom2 = compile.Literal("q", [])
atom3 = compile.Literal("r", [])
lit = compile.Literal("r", [], negated=True)
regular_rule = compile.Rule(atom, [atom2, atom3])
regular_rule2 = compile.Rule(atom, [lit, atom2])
multi_rule = compile.Rule([atom, atom2], [atom3])
fake_rule = compile.Rule([atom, 1], [atom2])
fake_rule2 = compile.Rule(atom, [atom2, 1])
# is_atom
self.assertTrue(compile.is_atom(atom))
self.assertTrue(compile.is_atom(atom2))
self.assertTrue(compile.is_atom(atom3))
self.assertFalse(compile.is_atom(lit))
self.assertFalse(compile.is_atom(regular_rule))
self.assertFalse(compile.is_atom(regular_rule2))
self.assertFalse(compile.is_atom(multi_rule))
self.assertFalse(compile.is_atom(fake_rule))
self.assertFalse(compile.is_atom(fake_rule2))
self.assertFalse(compile.is_atom("a string"))
# is_literal
self.assertTrue(compile.is_literal(atom))
self.assertTrue(compile.is_literal(atom2))
self.assertTrue(compile.is_literal(atom3))
self.assertTrue(compile.is_literal(lit))
self.assertFalse(compile.is_literal(regular_rule))
self.assertFalse(compile.is_literal(regular_rule2))
self.assertFalse(compile.is_literal(multi_rule))
self.assertFalse(compile.is_literal(fake_rule))
self.assertFalse(compile.is_literal(fake_rule2))
self.assertFalse(compile.is_literal("a string"))
# is_regular_rule
self.assertFalse(compile.is_regular_rule(atom))
self.assertFalse(compile.is_regular_rule(atom2))
self.assertFalse(compile.is_regular_rule(atom3))
self.assertFalse(compile.is_regular_rule(lit))
self.assertTrue(compile.is_regular_rule(regular_rule))
self.assertTrue(compile.is_regular_rule(regular_rule2))
self.assertFalse(compile.is_regular_rule(multi_rule))
self.assertFalse(compile.is_regular_rule(fake_rule))
self.assertFalse(compile.is_regular_rule(fake_rule2))
self.assertFalse(compile.is_regular_rule("a string"))
# is_multi_rule
self.assertFalse(compile.is_multi_rule(atom))
self.assertFalse(compile.is_multi_rule(atom2))
self.assertFalse(compile.is_multi_rule(atom3))
self.assertFalse(compile.is_multi_rule(lit))
self.assertFalse(compile.is_multi_rule(regular_rule))
self.assertFalse(compile.is_multi_rule(regular_rule2))
self.assertTrue(compile.is_multi_rule(multi_rule))
self.assertFalse(compile.is_multi_rule(fake_rule))
self.assertFalse(compile.is_multi_rule(fake_rule2))
self.assertFalse(compile.is_multi_rule("a string"))
# is_rule
self.assertFalse(compile.is_rule(atom))
self.assertFalse(compile.is_rule(atom2))
self.assertFalse(compile.is_rule(atom3))
self.assertFalse(compile.is_rule(lit))
self.assertTrue(compile.is_rule(regular_rule))
self.assertTrue(compile.is_rule(regular_rule2))
self.assertTrue(compile.is_rule(multi_rule))
self.assertFalse(compile.is_rule(fake_rule))
self.assertFalse(compile.is_rule(fake_rule2))
self.assertFalse(compile.is_rule("a string"))
# is_datalog
self.assertTrue(compile.is_datalog(atom))
self.assertTrue(compile.is_datalog(atom2))
self.assertTrue(compile.is_datalog(atom3))
self.assertFalse(compile.is_datalog(lit))
self.assertTrue(compile.is_datalog(regular_rule))
self.assertTrue(compile.is_datalog(regular_rule2))
self.assertFalse(compile.is_datalog(multi_rule))
self.assertFalse(compile.is_datalog(fake_rule))
self.assertFalse(compile.is_datalog(fake_rule2))
self.assertFalse(compile.is_datalog("a string"))
# is_extended_datalog
self.assertTrue(compile.is_extended_datalog(atom))
self.assertTrue(compile.is_extended_datalog(atom2))
self.assertTrue(compile.is_extended_datalog(atom3))
self.assertFalse(compile.is_extended_datalog(lit))
self.assertTrue(compile.is_extended_datalog(regular_rule))
self.assertTrue(compile.is_extended_datalog(regular_rule2))
self.assertTrue(compile.is_extended_datalog(multi_rule))
self.assertFalse(compile.is_extended_datalog(fake_rule))
self.assertFalse(compile.is_extended_datalog(fake_rule2))
self.assertFalse(compile.is_extended_datalog("a string"))
