Ability to define an empty proto message via Pojo annotations ------------------------------------------------------------- Key: IPROTO-99 URL: https://issues.jboss.org/browse/IPROTO-99 Project: Infinispan ProtoStream Issue Type: Feature Request Affects Versions: 4.3.0.Alpha7 Reporter: Ryan Emerson Assignee: Nistor Adrian Priority: Major Fix For: 4.3.0.Alpha9 In some cases it's useful for a empty protobuf message to be sent, for example formalising an implementation type. Currently when trying to define an empty proto message by annotating a class with just {{ProtoName}} annotation, the following error is thrown at compile time: {code:java} Error:(71, 8) java: Class org.infinispan.notifications.cachelistener.cluster.AbstractClusterListenerUtilTest.StringAppender does not have any @ProtoField annotated fields. The class should be either annotated or it should have a custom marshaller. {code} It's possible to workaround this by simply creating a {{@Protofield}} annotation on a class variable which is never initialised.