JavaOne 2015: Java EE 8 Work in Progress

The second session of day 2 was a walk through of the JavaEE 8 specification with Linda DeMichiel, the specification lead from Oracle. JavaEE 8 is ultimately driven by community feedback. It will be comprised of 3 primary themes including HTML5 and Web, Ease of Development and CDI Alignment and Infrastructure for the Cloud.

HTML and Web Tier Enhancements:

• JSON-B 1.0
  • Marshall and Unmarshal Java object to and from JSON
  • Draw from the best of all current binding implementations
  • Default mapping of classes to JSON
  • Selectable provider implementation
• JSON-P 1.1
  • Tracking new pointer standards; IETF RFC 6901
  • Add editing operations
    • add, replace, remove, move, copy, test
  • Helper classes to utilize SE8 streams
  • JSON Query with Lambdas
• Server Sent Events
  • Part of HTML5
  • Server to client streaming of text
  • Long lives HTTP sessions
  • Supported through JAX-RS enhancements
    • New media type and event in server API
    • New handlers in client API
• MVC 1.0
  • Action based mvc architecture
  • Gluing together key EE technologies
  • Model
    • CDI, Bean Validation, JPA
  • View
    • Facelets, JSF
  • Controller
    • JAX-RS
• HTTP/2
  • Addressing the limitation of HTTP/1.x
  • Reduce latency
  • Address head of line blocking issues
  • Support true parallelism
  • Request/Response multiplexing over 1 connection
  • Binary framing
  • Stream prioritization
  • Server Push
  • Header compression
• Servlet 4.0
  • Incorporating HTTP/2 features into Servlet spec
    • Multiplexing, stream prioritization, server push, binary framing

Ease of Development and CDI Alignment

• CDI security interceptors
  • @isAuthorized
    • hasRoles, hasAttributes, ruleSourceName, dynamic qualifiers
• JMS 2.1
  • Flexible MDBs
    • User defined callbacks (removing the onMessage limitation)
    • JMS specific annotations
    • Flexible method signatures (direct access to concrete types)
  • Improved asynchronous consumption
  • CDI alternative to MDBs
• Pruning
  • Has a multi-phased approach
    • Current EE-Spec expert group defines a technology as proposed optional and awaits feedback
    • EE-Spec EG + 1 may define a technology as optional based on given feedback
      • Optional means vendors have a choice of maintaining the technology of removing the specification
  • EE8 Proposed Optional
    • CORBA and IIOP
    • EJB 2.x remote and local views

Infrastructure for the Cloud

• Management 2.0
  • Updating JSR77
  • REST APIs for management and deployment
  • Defined by CRUD operations
  • Server sent events
• Security 1.0
  • Password Aliasing
  • User Management
  • Role Management
  • Authentication
  • Authorization

In total Java EE8 is targeting 11 major JSRs of which 3 are new and dozens of maintaincen JSRs on key JavaEE components like JPA, Batch, Bean Validation, Web Sockets and JCA.

Slides

Recording