def _try_create_new_match(self, first_partial_match: PartialMatch,
second_partial_match: PartialMatch,
first_event_defs: List[Tuple[int, QItem]],
second_event_defs: List[Tuple[int, QItem]]):
"""
Verifies all the conditions for creating a new partial match and creates it if all constraints are satisfied.
"""
# We need this because clean_expired doesn't necessarily clean old partial matches.
if self._sliding_window != timedelta.max and (
abs(first_partial_match.last_timestamp -
second_partial_match.first_timestamp) >
self._sliding_window
or abs(first_partial_match.first_timestamp -
second_partial_match.last_timestamp) >
self._sliding_window):
return
events_for_new_match = self._merge_events_for_new_match(
first_event_defs, second_event_defs, first_partial_match.events,
second_partial_match.events)
# events merged
if not self._validate_new_match(events_for_new_match):
return
self.add_partial_match(PartialMatch(events_for_new_match))
if self._parent is not None:
self._parent.handle_new_partial_match(self)
def handle_event(self, event: Event):
"""
Inserts the given event to this leaf.
"""
self.clean_expired_partial_matches(event.timestamp)
# get event's qitem and make a binding to evaluate formula for the new event.
binding = {self.__event_name: event.payload}
if not self._condition.eval(binding):
return
self.add_partial_match(PartialMatch([event]))
if self._parent is not None:
self._parent.handle_new_partial_match(self)
def _try_create_new_match(self, first_partial_match: PartialMatch,
second_partial_match: PartialMatch,
first_event_defs: List[Tuple[int, QItem]],
second_event_defs: List[Tuple[int, QItem]]):
"""
Verifies all the conditions for creating a new partial match and creates it if all constraints are satisfied.
"""
if self._sliding_window != timedelta.max and \
abs(first_partial_match.last_timestamp - second_partial_match.first_timestamp) > self._sliding_window:
return
events_for_new_match = self._merge_events_for_new_match(
first_event_defs, second_event_defs, first_partial_match.events,
second_partial_match.events)
if not self._validate_new_match(events_for_new_match):
return
self.add_partial_match(PartialMatch(events_for_new_match))
if self._parent is not None:
self._parent.handle_new_partial_match(self)
def __init__(self):
self.dt = datetime(2020, 1, 1)
self.pm_list = []
for i in range(10):
self.pm_list.append(
PartialMatch([Event(i, "type", self.dt + timedelta(i * 10))]))
def __init__(self):
self.dt = datetime(2020, 1, 1)
self.pm1 = PartialMatch([Event(1, "type", self.dt)])
self.pm2 = PartialMatch([Event(5, "type", self.dt + timedelta(4))])
self.pm3 = PartialMatch([Event(17, "type", self.dt + timedelta(16))])
self.pm4 = PartialMatch([Event(33, "type", self.dt + timedelta(32))])