Anyone know of a generic transactional Map | Set | List

Question

The only real available library i could find was the Apache Commons Transaction Library.

Problems w/ Apache Commons Transctions

• Last release 2008 (3years)
• not generic
• dependency on a logging f/w - do we need a logger for a Map !?!
• i think i saw somewhere (prolly the doco) that it was not XA.

Features id like

• available collections should be generic
• changes should be batched until a rollback ( forget all changes) or commit.
• dirty reads etc should also be a feature.
• thread independent, different threads should be able to participate in different txs.
• views should also be transaction - e.g. Map.entrySet()
• XA would be nice just so the collection instance can participate in a two phase commit.

Answer 1

Infinispan is a full XA enabled Cache that also implements a ConcurrentMap since version 4.

Answer 2

Maybe JDBM fits your bill? It has transactional disk-backed collection implementations.

Answer 3

I guess the, somewhat frustrating, but obvious, answer is:

If you require database functionality, why not use a database?

If you use an in-memory solution like HyperSonic (HSQL) you have almost no setup to do and you have transactions and many other features built-in