def register_default_functions():
fr = FunctionRegistry()
fr.register("temperatureF", FunctionInformation(Temperature.factory, Temperature.return_type))
fr.register("tweetLatLng", FunctionInformation(Location.factory, Location.return_type))
fr.register("floor", FunctionInformation(Rounding.factory, Rounding.return_type))
fr.register("strlen", FunctionInformation(StringLength.factory, StringLength.return_type))
fr.register("meanDevs", FunctionInformation(MeanOutliers.factory, MeanOutliers.return_type))
fr.register("sentiment", FunctionInformation(Sentiment.factory, Sentiment.return_type))
def __init__(self):
self.parser = gen_parser()
self.function_registry = FunctionRegistry()
self.unnamed_operator_counter = 0
self.twitter_td = twitter_tuple_descriptor()
from tweeql.exceptions import TweeQLException
from tweeql.field_descriptor import ReturnType
from tweeql.function_registry import FunctionInformation, FunctionRegistry
from tweeql.query_runner import QueryRunner
class StringLength():
return_type = ReturnType.INTEGER
@staticmethod
def factory():
return StringLength().strlen
def strlen(self, tuple_data, val):
"""
Returns the length of val, which is a string
"""
return len(val)
fr = FunctionRegistry()
fr.register(
"stringlength",
FunctionInformation(StringLength.factory, StringLength.return_type))
runner = QueryRunner()
runner.run_query("SELECT stringlength(text) AS len FROM twitter_sample;",
False)
