def main():
runner = QueryRunner()
try:
while True:
cmd = raw_input("tweeql> ")
process_command(runner, cmd)
except (KeyboardInterrupt, EOFError):
print '\nGoodbye!'
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)
