[hibernate-dev] Proposal for a Redis module in Hibernate OGM

Hi there, I created a Redis module for Hibernate OGM, based on OGM 4.2. Redis is a Key-Value store supporting Lists, Hashes (Maps), Sorted Sets, ... I took the Infinispan/CouchDB approach storing entities and associations as JSON documents within Redis Hashes. A Map<Object, Map<Object, Object>> corresponds with a Redis Hash. The entity table maps to the Hash Id, the entity Id to the key of the hash and the set of columns is enclosed within a JSON (currently). Supported features are: * Composite Id's * Embedded associations * External associations and I guess many more, that I'm currently not aware of :-) There are various ways (JSON, Java-serialized simulating Documents) how to store data within Redis. Another approach could be storing Tuples within Redis more native, since they are in the end Maps, somehow. However, mapping tuples to Redis fit a native storage but raises questions about Id's, limited data type support (there is no equivalent for nested lists/maps). So the more native approach would require distributing data amongst various data types, depending on the supported features, and would require more IO's. My impl can be used to interoperate with other clients from the C, Ruby, Python, Node.js, ... worlds. The JSON is clean and does not look awkward on the first look. The current code can be found below https://github.com/mp911de/hibernate-ogm/tree/redis. Most TCK tests pass, only some 15 tests fail. Mostly due to enum and JTA support. Couldn't figure out, how to fix it, so need your help to figure it out. Hope, I made you hungry for the Redis OGM module. Let's start a discussion based on my proposal for inclusion and let's see, where we end up. Best regards, Mark