Folks,
I'm working on parsing through some JSON that's posted/put as part of a
request. I'd like to find the messageId field and only get it if its type
is JInt. I'm doing this within a for comprehension that has a Box at the
top of it, so the resulting expression must play well with Box. What I've
got is:
for {
user <- WorkerMgr.find(UserId(user)) ?~ "User not found"
json <- r.json
(_, messageJson) <- (json \ classOf[JField]).find(_._1 ==
"messageId")
messageId <- Box.asA[JInt](messageJson)
(_, timemillisJson) <- (json \ classOf[JField]).find(_._1 ==
"timestamp")
timemillis <- Box.asA[JInt](timemillisJson)
} yield ...
The lines that look for messageId and timestamp and insure they are JInts
are kinda verbose. Is there a better way to do what I'm trying to do?
Thanks,
David
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
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