[infinispan-issues] [JBoss JIRA] (ISPN-5643) Simplify handling of previous values

Simplify handling of previous values ------------------------------------ Key: ISPN-5643 URL: https://issues.jboss.org/browse/ISPN-5643 Project: Infinispan Issue Type: Task Components: Core Affects Versions: 8.0.0.Beta2 Reporter: Dan Berindei Assignee: Dan Berindei Fix For: 8.0.0.Beta3 There are 5 ways the user can influence whether the previous value is read from a store/remote node: * unsafe.unreliableReturnValues * IGNORE_RETURN_VALUES * SKIP_CACHE_LOAD * SKIP_REMOTE_LOOKUP * CACHE_MODE_LOCAL Currently the effect of each is slightly different, depending on whether the operation is conditional, whether it's a delta-aware write etc. This is how I think it should work: * unsafe.unreliableReturnValues and IGNORE_RETURN_VALUES should skip reading the previous value only if it doesn't change the outcome of the operation (i.e. no effect for reads, conditional operations, or delta-aware). * SKIP_CACHE_LOAD should *always* skip the cache loader. * SKIP_REMOTE_LOOKUP and CACHE_MODE_LOCAL should *always* skip the remote lookup