Reputation: 9559
I use playframework2.2: try to build a play support project.
in my Build.scala, I want to add play.Project.playJavaSetting:
val main = play.Project(appName, appVersion, appDependencies)
.settings(play.Project.playJavaSettings) //error here
.settings(
resolvers += "webjars" at "http://webjars.github.com/m2",
resolvers += "typesafe" at "http://repo.typesafe.com/typesafe/release"
)
the error is:
[error] F:\git\play-example-form\project\Build.scala:19: overloaded method value
settings with alternatives:
[error] (ss: sbt.Def.Setting[_]*)sbt.Project <and>
[error] => Seq[sbt.Def.Setting[_]]
[error] cannot be applied to (Seq[sbt.Setting[_]])
[error] .settings(play.Project.playJavaSettings)
[error] ^
If I do not add playJavaSetting, it give me error about wrong collection apply, I mean:
val main = play.Project(appName, appVersion, appDependencies)
//.settings(play.Project.playJavaSettings)
and the error is:
[error] required: play.api.data.Form<StudentFormData>,scala.collection.immutab
le.Map<String,Object>,scala.collection.immutable.List<String>,scala.collection.i
mmutable.Map<String,Object>,scala.collection.immutable.Map<String,Object>
[error] found: play.data.Form<StudentFormData>,java.util.Map<String,Boolean>,j
ava.util.List<String>,java.util.Map<String,Boolean>,java.util.Map<String,Boolean
you can see the framework apply the scala.collection.immutable.List instead of play.util.List, If I really want to apply the java collections how to set the environment setting in Build.scala file?
Upvotes: 1
Views: 474
Reputation: 13749
You should change
.settings(play.Project.playJavaSettings)
to
.settings(play.Project.playJavaSettings: _*)
The settings
method is declared as def settings(ss: Setting[_]*)
, which means it takes repeated parameters of type Setting[_]
. The play.Project.playJavaSettings
is of type Seq[Setting[_]]
. To convert one to another Scala has a special type annotation.
If you are interested in details check 4.6.2 Repeated Parameters of The Scala Language Specification
Upvotes: 2