[CAUSEWAY-2195] Performance optimisation: short-circuit searching for actions if possible

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.0-M3
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 03/Dec/19 06:58
• Updated: 03/Dec/19 13:16
• Resolved: 03/Dec/19 13:16

Description

If explicit actions are configured (isis.reflector.explicit-annotions.action=true) then any method that does not have @Action annotation by definition is not an action.  We should therefore check for this early on when introspecting a domain type's method, to avoid searching more deeply than we would otherwise care.

We should also avoid looking at a method's parameters and return types until we've decided that the method is an action (either explicitly or implicitly).

The side-effect of not doing this is that we end up with types that otherwise don't need to be in the metamodel, meaning that startup takes longer.