Feature: pluggable value instance creators
(see Jira entry JACKSON-580 for details)
Prior to 1.9, one had to either
use @JsonCreator annotations (directly, or using mix-ins) to define constructors and/or static factory methods used for creating instances, or
- define custom deserializers that use alternative construction methods.
The new abstraction introduced in 1.9 is ValueInstantiator; which defines simple API to allow constructing instances from various JSON types. Functionality is mostly same as that offered by @JsonCreator, regarding types of input taken for construction, but does not force any specific construction strategy: implementations can use whatever mechanism they want.
[TO COMPLETE]
Example: simple scalar creation
Example: delegate-object based creation