Thanks, Joni, that works perfectly!
Peter
On Oct 5, 8:49 am, Joni Freeman <freeman.j...@gmail.com> wrote:
> Hi Peter,
>
> To select multiple packets you need to first select the objects within
> the array. Like this:
>
> for {
> JObject(packet) <- parse(s)
> JField("node", JString(node)) <- packet
> JField("dt", JInt(dt)) <- packet
> JField("temp", JDouble(temp)) <- packet
>
> } yield // construct Packet here
>
> Cheers Joni
>
> On Oct 5, 2:13 am, Peter Robinett <pe...@bubblefoundry.com> wrote:
>
> > Thanks, Joni.
>
> > I've been playing with just that for comprehension syntax over the
> > weekend. How would I do it if I had multiple packets?
> > {
> > "packets": [
> > {
> > "node": "00:1D:C9:00:04:9F",
> > "dt": 1254553581405,
> > "temp": 27.5
> > },
> > {
> > "node": "00:1D:C9:00:04:9E",
> > "dt": 1254553582405,
> > "temp": 24.3
> > }
> > ]
>
> > }
>
> > I've had some problems iterating across the parsed results. If I do:
> > for {
> > json <- parse(s)
> > JField("node", JString(node)) <- json
> > JField("dt", JInt(dt)) <- json
> > JField("temp", JDouble(temp)) <- json
>
> > } yield .... // construct Packet here
>
> > I will end up with 8 Packets. Should I be doing something like JArray
> > (json) <- parse(s)?
>
> > Thanks for your help,
> > Peter
>
> > On Oct 4, 3:08 pm, Joni Freeman <freeman.j...@gmail.com> wrote:
>
> > > > I don't know how hard would it be to add this feature, so I don't know
> > > > if this is a reasonable request. This would make making JSON API
> > > > endpoints really easy for me and I hope for other people too.
>
> > > This certainly sounds like a reasonable feature request, I will take a
> > > deeper look at it.
>
> > > Meanwhile, you can use tmp case class as Kevin noted, or use for-
> > > comprehension to query the json. Something like:
>
> > > {
> > > "packet": {
> > > "node": "00:1D:C9:00:04:9F",
> > > "dt": 1254553581405,
> > > "temp": 27.5
> > > }
>
> > > }
>
> > > val json = parse(s)
> > > for {
> > > JField("node", JString(node)) <- json
> > > JField("dt", JInt(dt)) <- json
> > > JField("temp", JDouble(temp)) <- json
>
> > > } yield .... // construct Packet here
>
> > > That's a bit verbose but quite flexible. This test case contains more
> > > query
> > > examples:http://github.com/dpp/liftweb/blob/master/lift-json/src/test/scala/ne...
>
> > > Cheers Joni
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~----------~----~----~----~------~----~------~--~---
