def select(self, item):
"""Select an item from the KB.
Args:
item ({attribute_name: attribute_value})
Returns:
SelectionEvent
"""
return Event.SelectionEvent(self.agent, item, time=self.timestamp())
def select(self, userid, idx):
try:
with self.conn:
cursor = self.conn.cursor()
u = self._get_user_info_unchecked(cursor, userid)
scenario = self.scenario_db.get(u.scenario_id)
kb = scenario.get_kb(u.agent_index)
item = kb.items[idx]
self.send(userid, Event.SelectionEvent(u.agent_index,
item,
str(time.time())))
return item
except sqlite3.IntegrityError:
print("WARNING: Rolled back transaction")
return None
