Examples of com.impetus.kundera.client.Client

com.impetus.kundera.client.Client
In Kundera, Clients act as a translator of JPA calls to datastore-specific respective operations call. Clients are constructed via {@link ClientFactory} that are configurable in persistence.xml. This makes itpossible for user to choose a {@link Client} implementation for a particularpersistence unit. Client API defines methods that are required to be implemented by various clients implementations (Thrift, Mongo etc). Any new addition of datastore support must implement this API. This is because kundera-core - after initialization, caching etc, calls clients methods to read from/ write into datastores. @author vivek.mishra

        UUID timeLineId = UUID.randomUUID();
        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);
        onCRUD(em, key);
        em = emf.createEntityManager();
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion("3.0.0");
        CassandraPrimeUser result = em.find(CassandraPrimeUser.class, key);
        Assert.assertNotNull(result);
        Assert.assertNull(result.getKey().getFullName());
        Assert.assertEquals("After merge", result.getTweetBody()); // assertion

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        UUID timeLineId = UUID.randomUUID();
        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);
        onCRUD(em, key);
        em = emf.createEntityManager();
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion("3.0.0");
        CassandraPrimeUser result = em.find(CassandraPrimeUser.class, key);
        Assert.assertNotNull(result);
        Assert.assertNull(result.getKey().getFullName());
        Assert.assertEquals(currentDate.getTime(), result.getTweetDate().getTime()); // assertion

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        UUID timeLineId = UUID.randomUUID();


        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);


        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion("3.0.0");


        CassandraPrimeUser user = new CassandraPrimeUser(key);
        user.setTweetBody("my first tweet");
        user.setTweetDate(currentDate);

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        EntityManager em = emf.createEntityManager();


        UUID timeLineId = UUID.randomUUID();
        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion(CassandraConstants.CQL_VERSION_3_0);


        CassandraPrimeUser user1 = new CassandraPrimeUser(key);
        user1.setTweetBody("my first tweet");
        user1.setTweetDate(currentDate);

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        EntityManager em = emf.createEntityManager();


        UUID timeLineId = UUID.randomUUID();
        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion(CassandraConstants.CQL_VERSION_3_0);


        CassandraPrimeUser user1 = new CassandraPrimeUser(key);
        user1.setTweetBody("my first tweet");
        user1.setTweetDate(currentDate);

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        EntityManager em = emf.createEntityManager();


        UUID timeLineId = UUID.randomUUID();
        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion(CassandraConstants.CQL_VERSION_3_0);


        CassandraPrimeUser user1 = new CassandraPrimeUser(key);
        user1.setTweetBody("my first tweet");
        user1.setTweetDate(currentDate);

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        UUID timeLineId = UUID.randomUUID();
        for (int i = 0; i < 500; i++)
        {
            CassandraCompoundKey key = new CassandraCompoundKey("mevivs", i, timeLineId);
            Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
            Client client = clients.get(PERSISTENCE_UNIT);
            ((CassandraClientBase) client).setCqlVersion(CassandraConstants.CQL_VERSION_3_0);
            CassandraPrimeUser user = new CassandraPrimeUser(key);
            user.setTweetBody("my first tweet");
            user.setTweetDate(currentDate);
            em.persist(user);

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    private void onCRUD(final EntityManager em, CassandraCompoundKey key)
    {


        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion(CassandraConstants.CQL_VERSION_3_0);
        CassandraPrimeUser user = new CassandraPrimeUser(key);
        user.setTweetBody("my first tweet");
        user.setTweetDate(currentDate);
        user.setNickName(NickName.KK);

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    private void updateNamed()
    {
        EntityManager em = emf.createEntityManager();


        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion("3.0.0");


        UUID timeLineId = UUID.randomUUID();


        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);

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        CassandraCompoundKey key = new CassandraCompoundKey("mevivs", 1, timeLineId);


        String deleteQuery = "Delete From CassandraPrimeUser u where u.key= :key";
        EntityManager em = emf.createEntityManager();
        Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
        Client client = clients.get(PERSISTENCE_UNIT);
        ((CassandraClientBase) client).setCqlVersion("3.0.0");


        Query q = em.createQuery(deleteQuery);
        q.setParameter("key", key);
        q.executeUpdate();

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Related Classes of com.impetus.kundera.client.Client

com.impetus.client.cassandra.config.CassandraPropertySetterTest

com.impetus.client.cassandra.crud.compositeType.association.UserInfoTest

com.impetus.client.cassandra.query.CassQuery

com.impetus.client.crud.compositeType.CassandraCompositeTypeOrderByTest

com.impetus.client.crud.compositeType.CassandraCompositeTypeTest

com.impetus.client.crud.compositeType.CompositeDataTypeTest

com.impetus.client.crud.compositeType.LuceneCompositeKeyTest

com.impetus.client.crud.PersonMongoTest

com.impetus.client.hbase.config.HbasePropertySetterTest

com.impetus.client.hbase.crud.PersonHBaseTest

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