[infinispan-issues] [JBoss JIRA] (ISPN-5003) Support putIfAbsent() semantics for FineGrainedAtomic map

Support putIfAbsent() semantics for FineGrainedAtomic map --------------------------------------------------------- Key: ISPN-5003 URL: https://issues.jboss.org/browse/ISPN-5003 Project: Infinispan Issue Type: Feature Request Reporter: Gunnar Morling Labels: Slowing_OGM For Hibernate OGM we work with {{FineGrainedAtomicMap}} to represent entity tuples. Now we're looking for a way to insert such map into the cache only if it is not present under the given key yet (so we know after the invocation whether the insert has taken place or not). {{Cache#putIfAbsent()}} seems promising for that, but this seems not usable with {{FineGrainedAtomicMap}} (As I seem not able to create the map myself in that case).