def _literal(translator, expr):
try:
return impala_compiler._literal(translator, expr)
except NotImplementedError:
if isinstance(expr, ir.ArrayValue):
return _array_literal_format(expr)
raise NotImplementedError(type(expr).__name__)
def _literal(translator, expr):
if isinstance(expr, ir.NumericValue):
value = expr.op().value
if not np.isfinite(value):
return 'CAST({!r} AS FLOAT64)'.format(str(value))
# special case literal timestamp, date, and time scalars
if isinstance(expr.op(), ops.Literal):
value = expr.op().value
if isinstance(expr, ir.DateScalar):
if isinstance(value, datetime.datetime):
raw_value = value.date()
else:
raw_value = value
return "DATE '{}'".format(raw_value)
elif isinstance(expr, ir.TimestampScalar):
return "TIMESTAMP '{}'".format(value)
elif isinstance(expr, ir.TimeScalar):
# TODO: define extractors on TimeValue expressions
return "TIME '{}'".format(value)
try:
return impala_compiler._literal(translator, expr)
except NotImplementedError:
if isinstance(expr, ir.ArrayValue):
return _array_literal_format(expr)
raise NotImplementedError(type(expr).__name__)
def _literal(translator, expr):
if isinstance(expr, ir.NumericValue):
value = expr.op().value
if not np.isfinite(value):
return 'CAST({!r} AS FLOAT64)'.format(str(value))
# special case literal timestamp, date, and time scalars
if isinstance(expr.op(), ops.Literal):
value = expr.op().value
if isinstance(expr, ir.DateScalar):
if isinstance(value, datetime.datetime):
raw_value = value.date()
else:
raw_value = value
return "DATE '{}'".format(raw_value)
elif isinstance(expr, ir.TimestampScalar):
return "TIMESTAMP '{}'".format(value)
elif isinstance(expr, ir.TimeScalar):
# TODO: define extractors on TimeValue expressions
return "TIME '{}'".format(value)
try:
return impala_compiler._literal(translator, expr)
except NotImplementedError:
if isinstance(expr, ir.ArrayValue):
return _array_literal_format(expr)
raise NotImplementedError(type(expr).__name__)
def _literal(translator, expr):
if isinstance(expr, ir.NumericValue):
value = expr.op().value
if not np.isfinite(value):
return 'CAST({!r} AS FLOAT64)'.format(str(value))
try:
return impala_compiler._literal(translator, expr)
except NotImplementedError:
if isinstance(expr, ir.ArrayValue):
return _array_literal_format(expr)
raise NotImplementedError(type(expr).__name__)