We now provide revised CQL and Cassandra templates as central classes to interact with CQL and Cassandra with object mapping. Previously, synchronous and asynchronous methods were exposed inside the same interfaces that made it hard to chose the right method.
The revised Template API consists of:
* CqlTemplate
* AsyncCqlTemplate
* CassandraTemplate
* AsyncCassandraTemplate
CassandraTemplate and AsyncCassandraTemplate reuse CqlTemplate and AsyncCqlTemplate instead of extending from these. This is, to not mix methods using conversion/object mapping with lower level CQL execution methods.
AsyncCqlTemplate and AsyncCassandraTemplate are all new and benefit from ListenableFuture as synchronization aid. They no longer rely on various callback-interfaces.
CassandraTemplate and AsyncCassandraTemplate no longer provide insert/update/delete methods accepting a collection of items. Use CassandraBatchOperations for atomic batches to group operations.
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