def test_return_clause_when_timestamp_referenced_after_where(self):
input_query = 'MATCH ()-[e]-() MATCH (a) WHERE e.timestamp > 4 ' \
'RETURN [e.timestamps] AS timestamps'
expected = 'RETURN [collect(e_timestamp)] AS timestamps'
result = unwind_timestamps(input_query)
result = 'RETURN' + result.split('RETURN')[1]
self.assertEqual(result, expected)
def transpile_part(part):
if ' '.join(part.split()).strip() in ('UNION', 'UNION ALL'):
return part.strip()
part = restrict_query_to_sketch(part, sketch_id)
part = append_return_clause(part)
part = unwind_timestamps(part)
return part.strip()
def test_timestamp_referenced_in_where(self):
input_query = 'MATCH ()-[e]-() WHERE e.timestamp < 4'
expected = 'MATCH ()-[e]-() ' \
'UNWIND e.timestamps + ' \
'filter(a IN [null] WHERE e.timestamps_incomplete) ' \
'AS e_timestamp ' \
'WITH * ' \
'WHERE coalesce((e_timestamp < 4), e_timestamp IS NULL)'
result = unwind_timestamps(input_query)
self.assertEqual(result, expected)
def test_timestamp_referenced_in_where_with_other_condition_1(self):
input_query = 'MATCH ()-[e]-() WHERE e.timestamp < 4 ' \
'AND e.foo = "foo"'
expected = 'MATCH ()-[e]-() ' \
'WHERE e.foo = "foo" ' \
'UNWIND e.timestamps + ' \
'filter(a IN [null] WHERE e.timestamps_incomplete) ' \
'AS e_timestamp ' \
'WITH * ' \
'WHERE coalesce((e_timestamp < 4 AND e.foo = "foo"), ' \
'e_timestamp IS NULL)'
result = unwind_timestamps(input_query)
self.assertEqual(result, expected)
def test_2_timestamps_referenced_in_where(self):
input_query = 'MATCH ()-[e1]-()-[e2]-() ' \
'WHERE e1.timestamp < e2.timestamp < e1.timestamp + 10'
expected = 'MATCH ()-[e1]-()-[e2]-() ' \
'UNWIND e1.timestamps + ' \
'filter(a IN [null] WHERE e1.timestamps_incomplete) ' \
'AS e1_timestamp ' \
'UNWIND e2.timestamps + ' \
'filter(a IN [null] WHERE e2.timestamps_incomplete) ' \
'AS e2_timestamp ' \
'WITH * ' \
'WHERE coalesce((' \
'e1_timestamp < e2_timestamp < e1_timestamp + 10), ' \
'e1_timestamp IS NULL OR e2_timestamp IS NULL)'
result = unwind_timestamps(input_query)
self.assertEqual(result, expected)
def test_timestamp_not_referenced(self):
input_query = 'MATCH (a) RETURN a'
expected = 'MATCH (a) RETURN a'
result = unwind_timestamps(input_query)
self.assertEqual(result, expected)
def test_return_clause_when_timestamp_not_referenced(self):
input_query = 'MATCH ()-[e]-() RETURN [e.timestamps] AS timestamps'
expected = 'RETURN [e.timestamps] AS timestamps'
result = unwind_timestamps(input_query)
result = 'RETURN' + result.split('RETURN')[1]
self.assertEqual(result, expected)