def parse(cls, tokenized_query):
parsed_query = {}
for key, expressions in tokenized_query.items():
field, _ = parse_field(key)
parsed_query[key] = [
cls.PARSERS_BY_FIELD[field](exp) for exp in expressions
]
return parsed_query
def build(cls, parsed_query: Dict[str, Iterable]) -> Dict[str, Iterable]:
built_query = {}
for key, operations in parsed_query.items():
field, _ = parse_field(key)
built_query[key] = [
QueryCondSpec(cond=cls.CONDITIONS_BY_FIELD[field](
op=op_spec.op, negation=op_spec.negation),
params=op_spec.params) for op_spec in operations
]
return built_query
def tokenize(cls, query_spec: str) -> Dict[str, Iterable]:
tokenized_query = tokenize_query(query_spec)
for key in tokenized_query.keys():
field, _ = parse_field(key)
if field and (field not in cls.PARSERS_BY_FIELD
or field not in cls.CONDITIONS_BY_FIELD):
raise QueryError(
'key `{}` is not supported by query manager `{}`.'.format(
key, cls.NAME))
return tokenized_query
def parse_field(cls, field: str) -> Tuple[str, Optional[str]]:
return parse_field(field=field)
def test_parse_field(self):
with self.assertRaises(QueryParserException):
parse_field('')
with self.assertRaises(QueryParserException):
parse_field('.')
with self.assertRaises(QueryParserException):
parse_field('sdf.sdf.sf')
with self.assertRaises(QueryParserException):
parse_field('foo.')
assert parse_field('foo') == ('foo', None)
assert parse_field('foo_bar') == ('foo_bar', None)
assert parse_field('foo.bar') == ('foo', 'bar')
assert parse_field('metric.foo_bar') == ('metric', 'foo_bar')
def proxy_field(cls, field: str) -> str:
field, suffix = parse_field(field)
if field in cls.FIELDS_PROXY:
field = cls.FIELDS_PROXY[field]
return '{}__{}'.format(field, suffix) if suffix else field
def test_parse_field(self):
with self.assertRaises(QueryParserException):
parse_field('')
with self.assertRaises(QueryParserException):
parse_field('__')
with self.assertRaises(QueryParserException):
parse_field('sdf__sdf__sf')
with self.assertRaises(QueryParserException):
parse_field('foo__')
assert parse_field('foo') == ('foo', None)
assert parse_field('foo_bar') == ('foo_bar', None)
assert parse_field('foo__bar') == ('foo', 'bar')
assert parse_field('metric__foo_bar') == ('metric', 'foo_bar')
def parse_field(cls, field):
return parse_field(field=field)