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

    protected Client instantiateClient(String persistenceUnit)
    {
        String indexerClass = kunderaMetadata.getApplicationMetadata().getPersistenceUnitMetadata(getPersistenceUnit())
                .getProperties().getProperty(PersistenceProperties.KUNDERA_INDEXER_CLASS);


        Client client = new OracleNoSQLClient(this, reader, indexManager, kvStore, externalProperties,
                getPersistenceUnit(), kunderaMetadata);
        populateIndexer(indexerClass, client);


        return client;
    }

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            {
                update.put(columName, c.getValue());
            }
        }


        Client client = persistenceDelegeator.getClient(m);
        return ((MongoDBClient) client).handleUpdateFunctions(query, update, m.getTableName());
    }

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    @Override
    public Iterator iterate()
    {
        EntityMetadata m = getEntityMetadata();
        Client client = persistenceDelegeator.getClient(m);
        return new ResultIterator((MongoDBClient) client, m, createMongoQuery(m, getKunderaQuery()
                .getFilterClauseQueue()), getOrderByClause(m), getKeys(m, getKunderaQuery().getResult()),
                persistenceDelegeator, getFetchSize() != null ? getFetchSize() : this.maxResult);
    }

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        if (log.isDebugEnabled())
            log.debug("Lucene Query: " + q);


        EntityMetadata m = kunderaQuery.getEntityMetadata();
        Client client = persistenceDelegeator.getClient(m);


        handlePostEvent();
        Map<String, Object> searchFilter = client.getIndexManager().search(m.getEntityClazz(), q, -1, maxResult);


        if (kunderaQuery.isAliasOnly())
        {
            String[] primaryKeys = searchFilter.values().toArray(new String[] {});
            return persistenceDelegeator.find(m.getEntityClazz(), primaryKeys);

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        return getClient(persistenceUnit);
    }


    private Client getClient(final String persistenceUnit)
    {
        Client client = clientMap.get(persistenceUnit);
        if (client == null)
        {
            throw new ClientResolverException("No client configured for persistenceUnit " + persistenceUnit);
        }
        return client;

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     *            the jpa query
     * @return the query
     */
    Query createQuery(String jpaQuery, final String persistenceUnit)
    {
        Client client = getClient(persistenceUnit);
        EntityMetadata metadata = KunderaMetadataManager.getMetamodel(kunderaMetadata, client.getPersistenceUnit())
                .getEntityMetadataMap().values().iterator().next();
        Query query = new QueryResolver().getQueryImplementation(jpaQuery, getClient(persistenceUnit)
                .getQueryImplementor(), this, metadata);
        return query;
    }

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            {
                if (!jtData.isProcessed())
                {
                    EntityMetadata m = KunderaMetadataManager.getEntityMetadata(kunderaMetadata,
                            jtData.getEntityClass());
                    Client client = getClient(m);
                    if (OPERATION.INSERT.equals(jtData.getOperation()))
                    {
                        client.persistJoinTable(jtData);
                        jtData.setProcessed(true);
                    }
                    else if (OPERATION.DELETE.equals(jtData.getOperation()))
                    {
                        for (Object pk : jtData.getJoinTableRecords().keySet())
                        {
                            client.deleteByColumn(m.getSchema(), jtData.getJoinTableName(),
                                    ((AbstractAttribute) m.getIdAttribute()).getJPAColumnName(), pk);
                        }
                        jtData.setProcessed(true);
                    }
                }

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                if (txResource != null)
                {
                    TransactionResource resource = (TransactionResource) Class.forName(txResource).newInstance();
                    coordinator.addResource(resource, pu);
                    Client client = clientMap.get(pu);


                    if (!(client instanceof TransactionBinder))
                    {
                        throw new KunderaTransactionException(
                                "Client : "
                                        + client.getClass()
                                        + " must implement TransactionBinder interface, if {kundera.transaction.resource.class} property provided!");
                    }
                    else
                    {
                        ((TransactionBinder) client).bind(resource);

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                {
                    EventLog event = iter.next();
                    Node node = event.getNode();
                    Class clazz = node.getDataClass();
                    EntityMetadata metadata = KunderaMetadataManager.getEntityMetadata(delegator.getKunderaMetadata(), clazz);
                    Client client = delegator.getClient(metadata);


                    // do manual rollback, if data is processed, and running
                    // without transaction or with kundera's default transaction
                    // support!
                    if (node.isProcessed()
                            && (!delegator.isTransactionInProgress() || MetadataUtils
                                    .defaultTransactionSupported(metadata.getPersistenceUnit(), delegator.getKunderaMetadata())))
                    {
                        if (node.getOriginalNode() == null)
                        {
                            Object entityId = node.getEntityId();
                            client.delete(node.getData(), entityId);
                        }
                        else
                        {
                            client.persist(node.getOriginalNode());
                        }
                    }
                    // mark it null for garbage collection.
                    event = null;
                }

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        for (JoinTableData jtData : joinTableDataCollection)
        {
            if (jtData.isProcessed())
            {
                EntityMetadata m = KunderaMetadataManager.getEntityMetadata(delegator.getKunderaMetadata(), jtData.getEntityClass());
                Client client = delegator.getClient(m);


                if (OPERATION.INSERT.equals(jtData.getOperation()))
                {
                    for (Object pk : jtData.getJoinTableRecords().keySet())
                    {
                        client.deleteByColumn(jtData.getSchemaName(), jtData.getJoinTableName(), m.getIdAttribute()
                                .getName(), pk);
                    }
                }
                else if (OPERATION.DELETE.equals(jtData.getOperation()))
                {
                    client.persistJoinTable(jtData);
                }
            }
        }
        joinTableDataCollection.clear();
        joinTableDataCollection = null;

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com.impetus.client.cassandra.config.CassandraPropertySetterTest

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com.impetus.client.crud.compositeType.CassandraCompositeTypeOrderByTest

com.impetus.client.crud.compositeType.CassandraCompositeTypeTest

com.impetus.client.crud.compositeType.CompositeDataTypeTest

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