def test_and(self):
predicate = and_(is_equal_to("this", "value-1"),
is_equal_to("this", "value-2"))
self.assertEqual(
str(predicate),
"AndPredicate(EqualPredicate(attribute='this', value=value-1),"
" EqualPredicate(attribute='this', value=value-2))")
def test_and(self):
predicate = and_(is_equal_to("this", "value-1"), is_equal_to("this", "value-2"))
self.assertEqual(
str(predicate),
"AndPredicate(EqualPredicate(attribute='this', value=value-1),"
" EqualPredicate(attribute='this', value=value-2))",
)
import hazelcast
from hazelcast.core import HazelcastJsonValue
from hazelcast.serialization.predicate import and_, is_greater_than, sql
client = hazelcast.HazelcastClient()
employees_map = client.get_map("employees").blocking()
alice = "{\"name\": \"Alice\", \"age\": 35}"
andy = "{\"name\": \"Andy\", \"age\": 22}"
bob = {"name": "Bob", "age": 37}
# HazelcastJsonValue can be constructed from JSON strings
employees_map.put(0, HazelcastJsonValue(alice))
employees_map.put(1, HazelcastJsonValue(andy))
# or from JSON serializable objects
employees_map.put(2, HazelcastJsonValue(bob))
# Employees whose name starts with 'A' and age is greater than 30
predicate = and_(sql("name like A%"), is_greater_than("age", 30))
values = employees_map.values(predicate)
for value in values:
print(value.to_string()) # As JSON string
print(value.loads()) # As Python object
client.shutdown()
if __name__ == '__main__':
# Configure logging
logging.basicConfig(
format='%(asctime)s%(msecs)03d [%(name)s] %(levelname)s: %(message)s',
datefmt="%H:%M%:%S,")
logging.getLogger().setLevel(logging.INFO)
# Start the Hazelcast Client and connect to an already running Hazelcast Cluster on 127.0.0.1
config = ClientConfig()
portable_factory = {User.CLASS_ID: User}
config.serialization_config.add_portable_factory(User.FACTORY_ID,
portable_factory)
hz = hazelcast.HazelcastClient(config)
# Get a Distributed Map called "users"
users = hz.get_map("users")
# Add some users to the Distributed Map
generate_users(users)
# Create a Predicate from a String (a SQL like Where clause)
sqlQuery = SqlPredicate("active AND age BETWEEN 18 AND 21)")
# Creating the same Predicate as above but with a builder
criteriaQuery = and_(is_equal_to("active", True),
is_between("age", 18, 21))
# Get result collections using the two different Predicates
result1 = users.values(sqlQuery).result()
result2 = users.values(criteriaQuery).result()
# Print out the results
print(result1)
print(result2)
# Shutdown this Hazelcast Client
hz.shutdown()
def test_and(self):
self._fill_map()
predicate = and_(is_equal_to("this", "value-1"),
is_equal_to("this", "value-2"))
self.assertItemsEqual(self.map.key_set(predicate), [])
def test_and(self):
self._fill_map()
predicate = and_(is_equal_to("this", "value-1"), is_equal_to("this", "value-2"))
self.assertItemsEqual(self.map.key_set(predicate), [])
