cs462-lab1-hello_world.krl

ruleset hello_world {
  meta {
    name "Hello World"
    description <<
A first ruleset for the Quickstart
>>
    author "Daniel Randall"
    shares hello
  }

  global {
    hello = function(obj) {
      msg = "Hello " + obj;
      msg
    }
  }

  rule hello_world {
    select when echo hello
    send_directive("say", {"something": "Hello World"})
  }

  rule hello_monkey {
	select when echo monkey
	pre {
		name = event:attr("name").klog("using name attribute")
			|| "Monkey".klog("using default name")
	}
	send_directive("say", {"something": "Hello " + name})
  }

  rule hello_monkey_ternary {
	select when echo monkeyTernary
	pre {
		name = event:attr("name")
			 => event:attr("name").klog("using name attribute")
			 | "Monkey".klog("using default name") 
	}
	send_directive("say", {"something": "Hello " + name})
  }
}