def test_distinct(self):
ss = SelectStatement('table', distinct_fields=['field2'])
ss.add_where_clause(WhereClause('field1', EqualsOperator(), 'b'))
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field2" FROM table WHERE "field1" = %(0)s', six.text_type(ss))
ss = SelectStatement('table', distinct_fields=['field1', 'field2'])
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field1", "field2" FROM table')
def test_count(self):
ss = SelectStatement('table', count=True, limit=10, order_by='d')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(
six.text_type(ss),
'SELECT COUNT(*) FROM table WHERE "a" = %(0)s LIMIT 10',
six.text_type(ss))
self.assertIn('LIMIT', six.text_type(ss))
self.assertNotIn('ORDER', six.text_type(ss))
def test_distinct(self):
ss = SelectStatement('table', distinct_fields=['field2'])
ss.add_where(Column(db_field='field1'), EqualsOperator(), 'b')
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field2" FROM table WHERE "field1" = %(0)s', six.text_type(ss))
ss = SelectStatement('table', distinct_fields=['field1', 'field2'])
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field1", "field2" FROM table')
ss = SelectStatement('table', distinct_fields=['field1'], count=True)
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT COUNT("field1") FROM table')
def test_limit_rendering(self):
ss = SelectStatement('table', None, limit=10)
qstr = six.text_type(ss)
self.assertIn('LIMIT 10', qstr)
ss = SelectStatement('table', None, limit=0)
qstr = six.text_type(ss)
self.assertNotIn('LIMIT', qstr)
ss = SelectStatement('table', None, limit=None)
qstr = six.text_type(ss)
self.assertNotIn('LIMIT', qstr)
def test_field_rendering(self):
""" tests that fields are properly added to the select statement """
ss = SelectStatement('table', ['f1', 'f2'])
self.assertTrue(
six.text_type(ss).startswith('SELECT "f1", "f2"'),
six.text_type(ss))
self.assertTrue(str(ss).startswith('SELECT "f1", "f2"'), str(ss))
def _verify_statement(self, original):
st = SelectStatement(self.table_name)
result = execute(st)
response = result[0]
for assignment in original.assignments:
self.assertEqual(response[assignment.field], assignment.value)
self.assertEqual(len(response), 7)
def test_distinct(self):
ss = SelectStatement('table', distinct_fields=['field2'])
ss.add_where(Column(db_field='field1'), EqualsOperator(), 'b')
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field2" FROM table WHERE "field1" = %(0)s', six.text_type(ss))
ss = SelectStatement('table', distinct_fields=['field1', 'field2'])
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field1", "field2" FROM table')
ss = SelectStatement('table', distinct_fields=['field1'], count=True)
self.assertEqual(six.text_type(ss), 'SELECT DISTINCT COUNT("field1") FROM table')
def test_context_id_update(self):
""" tests that the right things happen the the context id """
ss = SelectStatement('table')
ss.add_where_clause(WhereClause('a', EqualsOperator(), 'b'))
self.assertEqual(ss.get_context(), {'0': 'b'})
self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(0)s')
ss.update_context_id(5)
self.assertEqual(ss.get_context(), {'5': 'b'})
self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(5)s')
def test_additional_rendering(self):
ss = SelectStatement('table',
None,
order_by=['x', 'y'],
limit=15,
allow_filtering=True)
qstr = six.text_type(ss)
self.assertIn('LIMIT 15', qstr)
self.assertIn('ORDER BY x, y', qstr)
self.assertIn('ALLOW FILTERING', qstr)
def _select_query(self):
"""
Returns a select clause based on the given filter args
"""
if self._where:
self._validate_select_where()
return SelectStatement(self.column_family_name,
fields=self._select_fields(),
where=self._where,
order_by=self._order,
limit=self._limit,
allow_filtering=self._allow_filtering)
def test_context_id_update(self):
""" tests that the right things happen the the context id """
ss = SelectStatement('table')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(ss.get_context(), {'0': 'b'})
self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(0)s')
ss.update_context_id(5)
self.assertEqual(ss.get_context(), {'5': 'b'})
self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(5)s')
def test_like_operator(self):
"""
Test to verify the like operator works appropriately
@since 3.13
@jira_ticket PYTHON-512
@expected_result the expected row is read using LIKE
@test_category data_types:object_mapper
"""
cluster = TestCluster()
session = cluster.connect()
self.addCleanup(cluster.shutdown)
session.execute("""CREATE CUSTOM INDEX text_index ON {} (text)
USING 'org.apache.cassandra.index.sasi.SASIIndex';"""
.format(self.table_name))
self.addCleanup(session.execute,
"DROP INDEX {}.text_index".format(DEFAULT_KEYSPACE))
partition = uuid4()
cluster = 1
self._insert_statement(partition, cluster)
ss = SelectStatement(self.table_name)
like_clause = "text_for_%"
ss.add_where(Column(db_field='text'), LikeOperator(), like_clause)
self.assertEqual(
six.text_type(ss),
'SELECT * FROM {} WHERE "text" LIKE %(0)s'.format(self.table_name))
result = execute(ss)
self.assertEqual(result[0]["text"], self.text)
q = TestQueryUpdateModel.objects.filter(
text__like=like_clause).allow_filtering()
self.assertEqual(q[0].text, self.text)
q = TestQueryUpdateModel.objects.filter(text__like=like_clause)
self.assertEqual(q[0].text, self.text)
def test_like_operator(self):
"""
Test to verify the like operator works appropriately
@since 3.13
@jira_ticket PYTHON-512
@expected_result the expected row is read using LIKE
@test_category data_types:object_mapper
"""
cluster = Cluster()
session = cluster.connect()
self.addCleanup(cluster.shutdown)
session.execute("""CREATE CUSTOM INDEX text_index ON {} (text)
USING 'org.apache.cassandra.index.sasi.SASIIndex';""".format(self.table_name))
self.addCleanup(session.execute, "DROP INDEX {}.text_index".format(DEFAULT_KEYSPACE))
partition = uuid4()
cluster = 1
self._insert_statement(partition, cluster)
ss = SelectStatement(self.table_name)
like_clause = "text_for_%"
ss.add_where(Column(db_field='text'), LikeOperator(), like_clause)
self.assertEqual(six.text_type(ss),
'SELECT * FROM {} WHERE "text" LIKE %(0)s'.format(self.table_name))
result = execute(ss)
self.assertEqual(result[0]["text"], self.text)
q = TestQueryUpdateModel.objects.filter(text__like=like_clause).allow_filtering()
self.assertEqual(q[0].text, self.text)
q = TestQueryUpdateModel.objects.filter(text__like=like_clause)
self.assertEqual(q[0].text, self.text)
def test_partition_key_index(self):
"""
Test to ensure that statement partition key generation is in the correct order
@since 3.2
@jira_ticket PYTHON-535
@expected_result .
@test_category object_mapper
"""
self._check_partition_value_generation(
BasicModel, SelectStatement(BasicModel.__table_name__))
self._check_partition_value_generation(
BasicModel, DeleteStatement(BasicModel.__table_name__))
self._check_partition_value_generation(
BasicModelMulti, SelectStatement(BasicModelMulti.__table_name__))
self._check_partition_value_generation(
BasicModelMulti, DeleteStatement(BasicModelMulti.__table_name__))
self._check_partition_value_generation(
ComplexModelRouting,
SelectStatement(ComplexModelRouting.__table_name__))
self._check_partition_value_generation(
ComplexModelRouting,
DeleteStatement(ComplexModelRouting.__table_name__))
self._check_partition_value_generation(BasicModel,
SelectStatement(
BasicModel.__table_name__),
reverse=True)
self._check_partition_value_generation(BasicModel,
DeleteStatement(
BasicModel.__table_name__),
reverse=True)
self._check_partition_value_generation(
BasicModelMulti,
SelectStatement(BasicModelMulti.__table_name__),
reverse=True)
self._check_partition_value_generation(
BasicModelMulti,
DeleteStatement(BasicModelMulti.__table_name__),
reverse=True)
self._check_partition_value_generation(
ComplexModelRouting,
SelectStatement(ComplexModelRouting.__table_name__),
reverse=True)
self._check_partition_value_generation(
ComplexModelRouting,
DeleteStatement(ComplexModelRouting.__table_name__),
reverse=True)
async def async_iterate(cls,
fetch_size: int,
fields: list = None,
limit: int = None):
"""Iteration by fetch_size
"""
statement = SimpleStatement(str(
SelectStatement(cls.column_family_name(),
fields=fields,
limit=limit)),
fetch_size=fetch_size)
connection = conn.get_connection()
paging_state = None
while True:
# Execute query
result_set = await connection.session.execute_future(
statement, paging_state=paging_state)
yield [cls(**result) for result in result_set.current_rows]
paging_state = result_set.paging_state
# End
if paging_state is None:
break
def test_context(self):
ss = SelectStatement('table')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(ss.get_context(), {'0': 'b'})
def test_count(self):
ss = SelectStatement('table', count=True, limit=10, order_by='d')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(six.text_type(ss), 'SELECT COUNT(*) FROM table WHERE "a" = %(0)s LIMIT 10', six.text_type(ss))
self.assertIn('LIMIT', six.text_type(ss))
self.assertNotIn('ORDER', six.text_type(ss))
def test_single_field_is_listified(self):
""" tests that passing a string field into the constructor puts it into a list """
ss = SelectStatement('table', 'field')
self.assertEqual(ss.fields, ['field'])
def test_context(self):
ss = SelectStatement('table')
ss.add_where_clause(WhereClause('a', EqualsOperator(), 'b'))
self.assertEqual(ss.get_context(), {'0': 'b'})
def test_where_clause_rendering(self):
ss = SelectStatement('table')
ss.add_where_clause(WhereClause('a', EqualsOperator(), 'b'))
self.assertEqual(six.text_type(ss), 'SELECT * FROM table WHERE "a" = %(0)s', six.text_type(ss))
def test_table_rendering(self):
ss = SelectStatement('table')
self.assertTrue(six.text_type(ss).startswith('SELECT * FROM table'), six.text_type(ss))
self.assertTrue(str(ss).startswith('SELECT * FROM table'), str(ss))
def test_none_fields_rendering(self):
""" tests that a '*' is added if no fields are passed in """
ss = SelectStatement('table')
self.assertTrue(six.text_type(ss).startswith('SELECT *'), six.text_type(ss))
self.assertTrue(str(ss).startswith('SELECT *'), str(ss))
def test_where_clause_rendering(self):
ss = SelectStatement('table')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(six.text_type(ss), 'SELECT * FROM table WHERE "a" = %(0)s', six.text_type(ss))
def test_context(self):
ss = SelectStatement('table')
ss.add_where_clause(WhereClause('a', EqualsOperator(), 'b'))
self.assertEqual(ss.get_context(), {'0': 'b'})
def test_context(self):
ss = SelectStatement('table')
ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
self.assertEqual(ss.get_context(), {'0': 'b'})
