An Implementation is missing at runtime

[mathieuleclaire]

Hi,
I use upickle through autowire in a scalatra client/server application.
My server depends on JVM stuff (for autowire, upickle, ...) and my client one on JS stuff (for autowire, upickle, ...).

Everything compiles and runs fine, except when I do a request through autowire, I get a weird exeception when upickle reads the JSON data. Is some lib or something is missing ?
Thanks

scala.NotImplementedError: an implementation is missing
    at scala.Predef$.$qmark$qmark$qmark(Predef.scala:225)
    at scala.scalajs.js.JSON$.parse$default$2(JSON.scala:33)
    at upickle.json.package$.read(package.scala:20)
    at upickle.Types$class.read(Types.scala:135)
    at upickle.package$.read(package.scala:10)
    at org.openmole.gui.server.core.GUIServlet$$anonfun$2.apply(GUIServlet.scala:69)
    at org.openmole.gui.server.core.GUIServlet$$anonfun$2.apply(GUIServlet.scala:65)

[lihaoyi]

Youre using the js version of upickle on the jvm
On Oct 29, 2014 9:03 AM, "Mathieu" notifications@github.com wrote:

Hi,
I use upickle through autowire in a scalatra client/server application.
My server depends on JVM stuff (for autowire, upickle, ...) and my client
one on JS stuff (for autowire, upickle, ...).

Everything compiles and runs fine, except when I do a request through
autowire, I get a weird exeception when upickle reads the JSON data. Is
some lib or something is missing ?
Thanks

scala.NotImplementedError: an implementation is missing
at scala.Predef$.$qmark$qmark$qmark(Predef.scala:225)
at scala.scalajs.js.JSON$.parse$default$2(JSON.scala:33)
at upickle.json.package$.read(package.scala:20)
at upickle.Types$class.read(Types.scala:135)
at upickle.package$.read(package.scala:10)
at org.openmole.gui.server.core.GUIServlet$$anonfun$2.apply(GUIServlet.scala:69)
at org.openmole.gui.server.core.GUIServlet$$anonfun$2.apply(GUIServlet.scala:65)

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#38.

[mathieuleclaire]

No, I do use upickle JVM for my server and upickle JS for my client !
It is the only explanation that can causes this kind of error according to you ?

[lihaoyi]

Yeah, can't think of anything else. The stack trace is definitely showing
upickle-JS methods I. A JVM stacktrace
On Oct 29, 2014 9:28 AM, "Mathieu" notifications@github.com wrote:

No, I do use upickle JVM for my server and upickle JS for my client !
It is the only explanation that can causes this kind of error according to
you ?

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#38 (comment).

[mathieuleclaire]

Well, from the stacktrace, we have:

at upickle.package$.read(package.scala:10) //it is in jvm: jvm/src/main/scala/upickle/json/package.scala, then
at upickle.Types$class.read(Types.scala:135) //it is in shared/main/scala/upickle/Types.scala and then
at upickle.json.package$.read(package.scala:20) //it is in js/src/main/scala/upickle/json/package.scala !!

So my first call is well to the jvm lib, and then after 2 calls in upickle, we are in js part ... is this behaviour normal !?

[lihaoyi]

Can you come up with a minimal example without your funky servlet container? I bet when you do the problem will become self evident.

[lihaoyi]

Closing due to inactivity

[shengc]

I had similar issue - turns out it is because jvm depends on js, which brings in all dependencies of js to jvm which includes js version of upickle. You can use projectDependencies to explicitly exclude js upickle from the classpath of jvm.