DeltaAware support for conditional operations --------------------------------------------- Key: ISPN-5035 URL: https://issues.jboss.org/browse/ISPN-5035 Project: Infinispan Issue Type: Feature Request Components: Core Reporter: Radim Vansa Current delta-aware approach is implemented only in PutKeyValueCommand and ApplyDeltaCommand. This implementation does not allow to execute conditional delta-aware commands - or rather it does not allow to return any kind of value (the condition itself can be implemented inside the delta). One use-case when this would be required is equivalent of AtomicLong.getAndIncrement(). Currently we can implement this using {code} Long previous; do { previous = cache.get(key); } while (cache.replace(key, previous, previous + 1); {code} which requires at least two RPCs. With more generic interface, such as JCache's EntryProcessor this could be implemented using single RPC. (so, this JIRA is basically a request to native support for EntryProcessor)