[CAUSEWAY-2102] Support for Server Sent Events (SSE)

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 2.0.0-M3
• Component/s: Viewer Wicket
• Assignee: Andi Huber
• Reporter: Andi Huber
• Created: 06/Mar/19 16:30
• Updated: 02/May/19 08:00
• Resolved: 02/May/19 08:00

Description

We allow a ViewModel to subscribe to a server-side EventStream in order to receive updates, until the EventStream gets closed.

Use-case: Allows for Background-Tasks to fire UI-Events that update a client-side progress-bar.

Issue Links

• supercedes: CAUSEWAY-1960 Action background execution: provide built-in default implementation