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kundera

Regarding Kundera and Cassandra ThriftClient

We using Kundera ORM for connecting to Cassandra from REST service. In the persistence.xml we are specifying client lookup class as ThriftClientFactory as below

<property name="kundera.client.lookup.class"
                value="com.impetus.client.cassandra.thrift.ThriftClientFactory" />

Is this the right way to connect to cassandra or is there any way we can connect to Cassandra using CQL through Kundera?

Solution

  • Yes, Kundera's ThriftClient uses CQL for communicating with Cassandra. Also, make sure you are enabling CQL3 from your application while using this client.

    Setting CQL3: You can choose any method given below

    • In EntityManagerFactory

      HashMap propertyMap = new HashMap();
propertyMap.put(CassandraConstants.CQL_VERSION, CassandraConstants.CQL_VERSION_3_0);
EntityManagerFactory emf = Persistence.createEntityManagerFactory("cassandra_pu", propertyMap);

    • In EntityManager

      EntityManagerFactory emf = Persistence.createEntityManagerFactory("cassandra_pu");
EntityManager em = emf.createEntityManager();
em.setProperty("cql.version", "3.0.0");