private val nameField: TextField<String> = TextField("name",
model.flatMap { m -> LambdaModel.of( { m.name }, { m.name = it } ) })
(with wicket 10)
The old code works well with Kotlin 1.9
But after upgrading kotlin to 2.x
It shows exception :
private java.lang.Object
org.apache.wicket.MarkupContainer.children[write:1]
[class=org.apache.wicket.markup.html.form.TextField, path=3:form:name]
java.lang.Object org.apache.wicket.Component.data
[class=java.lang.Object] final
org.danekja.java.util.function.serializable.SerializableFunction
org.apache.wicket.model.IModel$4.val$mapper [class=java.lang.Object]
It seems Kotlin 2 no longer produce serializable lambda.
I tried these ways :
class SerializableLambdaModel<T>(
private val getter: () -> T,
private val setter: (T) -> Unit
) : IModel<T>, java.io.Serializable {
override fun getObject(): T = getter()
override fun setObject(value: T) {
setter(value)
}
override fun detach() {
}
}
not working
and this
class SerializableLambdaModel<T>(
getter: () -> T,
setter: (T) -> Unit
) : IModel<T>, java.io.Serializable {
private val getterFunc: () -> T = object : java.io.Serializable {
override fun toString(): String = getter().toString()
fun get(): T = getter()
}
private val setterFunc: (T) -> Unit = object : java.io.Serializable {
fun set(value: T) = setter(value)
}
override fun getObject(): T = getterFunc.get()
override fun setObject(value: T) {
setterFunc.set(value)
}
override fun detach() {}
}
and this
import org.apache.wicket.model.IModel
import java.io.Serializable
class SerializableLambdaModel<T : Any?>(
private val getter: () -> T,
private val setter: (T) -> Unit
) : IModel<T>, Serializable {
private val getterFunc: SerializableFunction0<T> =
SerializableFunction0(getter)
private val setterFunc: SerializableFunction1<T> =
SerializableFunction1(setter)
override fun getObject(): T {
return getterFunc.invoke()
}
override fun setObject(value: T) {
setterFunc.invoke(value)
}
override fun detach() {
}
private class SerializableFunction0<T>(private val function: () ->
T) : () -> T, Serializable {
override fun invoke(): T = function()
}
private class SerializableFunction1<T>(private val function: (T)
-> Unit) : (T) -> Unit, Serializable {
override fun invoke(value: T) = function(value)
}
}
ALL not working , throws the same error
Is there any way to solve this ?
Thanks.
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