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Jackson Core Annotations

Licensing

Project is licensed under Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0.txt) like all official Jackson components.

FasterXML also explicitly allows users to alternatively license component under Lesser GPL (LGPL) 2.1. If so, they may want to repackage artifacts to reflect their choice of license to use.

Documentation

Javadocs

• 2.3
• 2.2
• 2.1
• 2.0

Older versions:

• See 1.x Javadocs page.

Related

• FasterXML Jackson Wiki has documentation for all Jackson 1.x modules (much of which is still relevant for 2.x as well)
• Jackson-docs is the Jackson 2.x documentation hub
• Jackson Github portal contains links to all official Jackson components

Downloads

Note: only needed if using a build system that requires local jars; otherwise you can just use Maven repository.

Also note that typically minor versions of Jackson components need to match, although usually older version of annotations will work with newer core versions (assuming same major version).

• 2.3.0 (14-Nov-2013)
• 2.2.3 (13-Aug-2013) -- note: only change from 2.2.0 is location of LICENSE file in jar
• 2.1.5 (02-May-2012)
• 2.0.6 (05-Sep-2012)

Notes on compatibility

Starting with the baseline of 2.0, here are improvements over subsequence minor releases:

• 2.1
  • Adds @JsonIdentityReference to indicate that value of annotated property should always be an Object Id, and never fully expanded reference
  • @JsonIdentityInfo.firstAsId to force use of Object Id for the annotated type, even for the first reference
• 2.2 has no new annotations or annotation properties
• 2.3 has minor improvements over previous versions:
  • @JsonPropertyDescription allows annotating properties for JSON Schema generation
  • @JsonFilter applicable to properties (Fields, Methods, Constructor parameters), not just Classes