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. Per-property custom serialization inclusion (@JsonInclude(value=Include.CUSTOM, comparator=MyExcluder.class)
2. Add separate exception type for "pojo configuration problem", distinct from "json input" problem; in general to distinguish between bad configuration (server-side issue) and bad data (client issue) #1356
3. Per-property overwrite-vs-merge annotation/handling, to allow for merging of configuration information (for example)
4. Aliases, to allow migration: alternate property id names to accept (but not write)
5. Non-blocking JSON/Smile parser?
6. Rewrite of property/creator introspection code, to resolve many open issue wrt Creator auto-detection and name-detection
7. Support for @JsonIncludeProperties (opposite of @JsonIgnoreProperties)
8. Allow pre-defining Object Ids; pluggable Object Id converters?
9. Protobuf: Schema building by hand
10. "Safe" ObjectReader, ObjectWriter; that is, ones that does NOT throw checked exceptions (wrap IOExceptions), to work better with Java 8 Streams
11. 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.