Jackson Release 2.9

Version 2.9 development has not yet been started, as of July 2016, but will start soon.

New Modules, status changes

Changes: compatibility

Major features of 2.9

Planned

1. Rewrite of property/creator introspection code, to resolve many open issue wrt Creator auto-detection and name-detection
2. Per-property overwrite-vs-merge annotation/handling, to allow for merging of configuration information (for example)
3. Support for @JsonIncludeProperties (opposite of @JsonIgnoreProperties)
4. Per-property custom serialization inclusion (@JsonInclude(value=Include.CUSTOM, comparator=MyExcluder.class)
5. Aliases, to allow migration: alternate property id names to accept (but not write)
6. Non-blocking JSON/Smile parser?
7. Allow pre-defining Object Ids; pluggable Object Id converters?
8. Protobuf: Schema building by hand
9. "Safe" ObjectMapper (and/or ObjectReader, ObjectWriter), that is, one that does NOT throw checked exceptions (wrap IOExceptions), to work better with Java 8 Streams
10. A way to force a supertype as type id to use during serialization: this is needed to avoid deserialization problems for things like concrete Hibernate collection type.