proposition: introduce scala dsl

[ottovw]

The current deadbolt scala api feels very java-like. however it should be trivially easy to add a lightweight scala dsl for permission building to create a better api.

Instead of:

// subject must have the "foo" AND "bar" roles 
def restrictedFunctionB = actionBuilder.RestrictAction("foo", "bar").defaultHandler() { Ok(accessOk()) }

// subject must have the "foo" OR "bar" roles 
def restrictedFunctionC = actionBuilder.RestrictAction(List(Array("foo"), Array("bar"))).defaultHandler() { Ok(accessOk()) }

The API could look like this (even without changing the current api, by adding some dsl builders:

// Foo and Bar are types / enums / case classes ... or just stay string, both would work
// subject must have the "foo" AND "bar" roles 
def restrictedFunctionB = RestrictAction(Foo and Bar) { Ok(accessOk()) }

// subject must have the "foo" OR "bar" roles 
def restrictedFunctionC = RestrictAction(Foo or Bar) { Ok(accessOk()) }

[schaloner]

A very valid criticism, and a very interesting idea.