alexarchambault/argonaut-shapeless

Automatic argonaut codec derivation with shapeless

Miles Sabin

@milessabin

It looks like the basic example in the README fails with Scala 2.10.4.

Alexandre Archambault

@alexarchambault

Strange

Miles Sabin

@milessabin

Ahh ... hang on. Of course.

The paradise plugin is needed for 2.10.x ... that should probably be documented for argonaut-shapeless users.

Actually, all of your shapeless-2.1.0 using projects that support 2.10.x.

Alexandre Archambault

@alexarchambault

That's what I was about to ask you :)

Worth adding in the README yes

Miles Sabin

@milessabin

Heads up: 2.1.0 final has just been published :-)

Alexandre Archambault

@alexarchambault

Thanks! I should publish a new version today (after some minor adjustments)

Srepfler Srdan

@schrepfler

hi @alexarchambault, I've just started playing with Scala and having to deal a bit with XML I stumbled onto scalaxb, the xsd schema to type-classes+case-classes looks awesome but I've noticed the case classes sit within structures called DataRecord so in a way it mingles what is typically called the model and this DataRecord which looks like a metamodel facility to help with the inhering xml structure and ability to have various elements from different grammars (namespaces) sit on the same xml tree level

is there a way to use argonaut to take this generated model and convert it to for example JSON on the fly?

in a way ignoring the DataRecord classes

Alexandre Archambault

@alexarchambault

hi @schrepfler I had a quick look at a project of mine using scalaxb, with lots of generated case classes and ADTs

I can't find any field of type DataRecord in these

Srepfler Srdan

@schrepfler

Alexandre Archambault

@alexarchambault

there are various issues I think you may run into trying to convert to JSON some of these

regarding some specific types scalaxb uses (javax.xml.datatype.XMLGregorianCalendar, scalaxb.Base64Binary, for example - you'll have to provide json codec for these specific types)

and also its ADTs: these are not sealed (it declares things like trait Something instead of sealed trait Something), which shapeless Generic will not like

but do you have a specific example of a generated case class with DataRecord? I can't find some in my model, but there may be in some others

Srepfler Srdan

@schrepfler

then you are lucky-er than me :))

Alexandre Archambault

@alexarchambault

(don't know if I'd been that lucky, I had to manually edit the generated code IIRC :-)

but if you have some generated code with a DataRecord, put it in a gist, I'll have a look at it

Srepfler Srdan

@schrepfler

let me show you an instance of how it composed the case classes in one instance

reqBetBuild: com.tralala.package.OxiModel = OxiModel(DataRecord(request,Request(ReqClientAuth(DataRecord(ReqClientAuthSequence1(tralala,someval,None,None,None)),Map(@returnToken -> DataRecord(N), @trustedMethod -> DataRecord(accountNo))),DataRecord(reqBetBuild,ReqBetBuild(Some(Token(List(DataRecord(11111111AD)),Map())),Some(CONTINUE),Some(M),None,None,List(DataRecord(outcomeGroup,OutcomeGroup(1,List(49285))), DataRecord(outcomeGroup,OutcomeGroup(2,List(49297))), DataRecord(outcomeGroup,OutcomeGroup(3,List(49291))), DataRecord(outcomeGroup,OutcomeGroup(4,List(49285, 49297, 49291)))),Map(@returnComplexCombinations -> DataRecord(Y), @returnFreebetTokens -> DataRecord(N), @returnOutcomeDetails -> DataRecord(N)))),Map())),Map(@version -> DataRecord(69.0)))

I think it's because the base document schema is very loose as well

Alexandre Archambault

@alexarchambault

@schrepfler you know you can format code multi-line code, with triple backquotes, like

code

and write multi-lines messages by pressing shift+enter to go to the next line

(that's better :-)

Srepfler Srdan

@schrepfler

sorry :)

new to gitter

Alexandre Archambault

@alexarchambault

no worries :-)

Srepfler Srdan

@schrepfler

it's not that it's not in use https://github.com/eed3si9n/scalaxb/blob/ac770ad0f2c0420b4ae485d2ef9fe71d3e5e5827/integration/src/test/resources/GeneralUsage.scala

Alexandre Archambault

@alexarchambault

do you have the definition of ReqClientAuth? (grepping in the generated code, or ctrl+B from intellij)

Srepfler Srdan

@schrepfler

yup

case class ReqClientAuth(reqclientauthoption: scalaxb.DataRecord[Any],
  attributes: Map[String, scalaxb.DataRecord[Any]] = Map()) {
  lazy val returnToken = attributes("@returnToken").as[String]
  lazy val trustedMethod = attributes.get("@trustedMethod") map { _.as[TrustedMethod] }
  lazy val trustedHost = attributes.get("@trustedHost") map { _.as[String] }
}

Alexandre Archambault

@alexarchambault

maybe you could provide you own argonaut codec for DataRecord[Any]

then argonaut-shapeless will use it

Srepfler Srdan

@schrepfler

it's that Any which is worrying me

any example how the codecs are made?

Alexandre Archambault

@alexarchambault

for encoding: https://github.com/argonaut-io/argonaut/blob/master/src/main/scala/argonaut/EncodeJson.scala#L125-L129

decoding: https://github.com/argonaut-io/argonaut/blob/master/src/main/scala/argonaut/DecodeJson.scala#L157-L162

Srepfler Srdan

@schrepfler

cheers

I'll try to convice first the scalaxb guys if they can bundle it as a util

Alexandre Archambault

@alexarchambault

(the argonaut API is not most accessible then, but once you learned to master it, it's nice)

Srepfler Srdan

@schrepfler

as a dev dealing mostly with Java, any Scala API looks like magical writings by some alchemist

Alexandre Archambault

@alexarchambault

it can feel this way at the beginning, type level libraries in particular :-D

bundling what btw? generation of json instead of xml?

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