DATACASS-656 - Migrate to Cassandra Driver 4.x

[mp911de]

This PR migrates Spring Data Cassandra to the Datastax 4.x driver.

Breaking changes:

Removal of types (without replacement):

• PoolingOptionsFactoryBean
• SocketOptionsFactoryBean
• CassandraClusterFactoryBean
• CassandraClusterParser
• CassandraCqlClusterFactoryBean
• CassandraCqlClusterParser
• CassandraCqlSessionParser
• AbstractClusterConfiguration
• GuavaListenableFutureAdapter
• ClusterBuilderConfigurer (use SessionBuilderConfigurer instead
• XML cql namespace (http://www.springframework.org/schema/cql, use http://www.springframework.org/schema/data/cassandra instead)
• XML cassandra:cluster (endpoint properties merged to cassandra:session)
• XML cql:template, use cassandra:cql-template instead

Deprecation:

• CassandraCqlSessionFactoryBean, use CqlSessionFactoryBean instead.
• CassandraSessionFactoryBean, use CqlSessionFactoryBean instead.
• AbstractCqlTemplateConfiguration, use AbstractSessionConfiguration instead.
• CodecRegistryTupleTypeFactory, use SimpleTupleTypeFactory instead.
• Spring Data's CqlIdentifier, use the driver CqlIdentifier instead.
• forceQuote attributes as quoting is no longer required. CqlIdentifier properly escapes reserved keywords and takes care of case-sensitivity.
• fetchSize on QueryOptions and …CqlTemplate types was deprecated, use pageSize instead
• Schema creation via CqlSessionFactoryBean (cassandra:session) is deprecated. Keyspace creation via CqlSessionFactoryBean (cassandra:session) is not affected.

New Configuration API:

• CqlSessionFactoryBean
• InitializeKeyspaceBeanDefinitionParser
• SessionFactoryFactoryBean including schema creation via KeyspacePopulator
• XML cassandra:cluster (endpoint properties merged to cassandra:session)
• XML cassandra:initialize-keyspace namespace support
• XML cassandra:session-factory with cassandra:script support
• KeyspacePopulator and SessionFactoryInitializer to initialize a keyspace

Other types of changes:

• Driver's Name constant class was removed. @CassandraType switched to CassandraSimpleTypeHolder.Name.
• Driver's ConsistentyLevel constant class was removed and reintroduced as DefaultConsistencyLevel. @Consistency was adapted to DefaultConsistencyLevel.
• RetryPolicy on QueryOptions and …CqlTemplate types was removed without replacement.
• Drivers's PagingState type was removed. Paging state now uses ByteBuffer.
• SimpleUserTypeResolver accepts CqlSession instead of Cluster.
• SimpleTupleTypeFactory was migrated to enum. SimpleTupleTypeFactory.INSTANCE no longer requires a Cluster/CqlSession context.
• Introduction of StatementBuilder to functionally

Configuration summary

Driver 4 merges Cluster and Session objects into a single CqlSession object, therefore all Cluster-related API was removed. The Configuration was revised in large parts by removing most configuration items that were moved into DriverConfigLoader that is mostly file-based. This means that SocketOptions, AddressTranslator and many more options are configured now through other means.

XML and Java-based config are adapted.

Keyspace creation is now tied to the CqlSessionFactoryBean and schema creation (types, tables, indexes) are controlled by SessionFactoryFactoryBean.

Changes to Session

The driver now uses CqlSession instead of Session. SessionFactory, …CqlTemplate, and …CassandraTemplate and all related types are migrated accordingly.

Further information:

• https://docs.datastax.com/en/developer/java-driver/4.3/
• https://docs.datastax.com/en/developer/java-driver/4.3/upgrade_guide/

TODO:

• Adapt documentation
• Create a migration guide
• Driver misses a few operators (UPDATE with set at list index, append multiple items to List/Set columns) (see https://jira.spring.io/browse/DATACASS-712)

[mp911de]

That's merged now.