Document @ProtoAdaptor for marshalling of external classes ---------------------------------------------------------- Key: ISPN-12626 URL: https://issues.redhat.com/browse/ISPN-12626 Project: Infinispan Issue Type: Task Components: Documentation Affects Versions: 12.0.0.CR1 Reporter: Ryan Emerson Assignee: Donald Naro Priority: Major Fix For: 12.0.0.Final Protostream 4.4.0.Alpha4 added support for automatically generating marshallers for external classes via the {{@ProtoAdaptor}} field. This greatly simplifies how a user can marshall third party classes, as it's no longer necessary to implement the {{MessageMarshaller}} interface and explicitly create a {{SerializationContextInitializer}} implementation. Process for using {{@ProtoAdaptor}} 1. Create an adaptor class and add the {{@ProtoAdaptor}} annotation {code:java} @ProtoAdapter(UUID.class) public class UUIDAdapter { @ProtoFactory UUID create(Long mostSigBitsFixed, Long leastSigBitsFixed) { return new UUID(mostSigBitsFixed, leastSigBitsFixed); } @ProtoField(number = 1, type = Type.FIXED64, defaultValue = "0") Long getMostSigBitsFixed(UUID uuid) { return uuid.getMostSignificantBits(); } @ProtoField(number = 2, type = Type.FIXED64, defaultValue = "0") Long getLeastSigBitsFixed(UUID uuid) { return uuid.getLeastSignificantBits(); } } {code} 2. Register {{UUIDAdapter}} with your {{SerialiazationContextInitializer}} interface (LibraryInitializer in the docs examples).