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


    @Override
    public void handleFind(NodeStateContext nodeStateContext)
    {
        // Fetch Node data from Client
        Client client = nodeStateContext.getClient();
        Class<?> nodeDataClass = nodeStateContext.getDataClass();
        EntityMetadata entityMetadata = KunderaMetadataManager.getEntityMetadata(nodeStateContext.getPersistenceDelegator().getKunderaMetadata(), nodeDataClass);
        Object entityId = nodeStateContext.getEntityId();


        Object nodeData = null; // Node data


        EntityReader reader = client.getReader();
        if (reader == null)
        {
            return;
        }

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    public void handleFlush(NodeStateContext nodeStateContext)
    {
        // Entity state to remain as Managed


        // Flush this node to database
        Client client = nodeStateContext.getClient();
        client.persist((Node) nodeStateContext);


        // logNodeEvent("FLUSHED", this, nodeStateContext.getNodeId());


        // Since node is flushed, mark it as NOT dirty
        nodeStateContext.setDirty(false);

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        em.clear();


        AssociationBuilder builder = new AssociationBuilder();


        PersistenceDelegator delegator = CoreTestUtilities.getDelegator(em);
        Client associationEntityClient = delegator.getClient(KunderaMetadataManager.getEntityMetadata(
                ((EntityManagerFactoryImpl) emf).getKunderaMetadataInstance(), AddressU11FK.class));
        java.util.List results = builder.getAssociatedEntitiesFromIndex(PersonU11FK.class, "1", AddressU11FK.class,
                associationEntityClient);
        Assert.assertNotNull(results);

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    public void testGetClient()
    {
        PersonnelDTO dto = new PersonnelDTO();
        EntityMetadata entityMetadata = KunderaMetadataManager.getEntityMetadata(((EntityManagerFactoryImpl)emf).getKunderaMetadataInstance(), dto.getClass());
        PersistenceDelegator pd = ((EntityManagerImpl) em).getPersistenceDelegator();
        Client c = pd.getClient(entityMetadata);
        Assert.assertNotNull(c);
        Assert.assertTrue(c instanceof CoreTestClient);


    }

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