Hello, I am playing with Scala and Wicket and I am not clear about
using "val" and "var" when I am working with JPA entity objects (which
are not serializable). For example:
add(new RefreshingView[User]("users"){
override def getItemModels(): java.util.Iterator[IModel[User]] = {
var models = new java.util.ArrayList[IModel[User]]();
for(user <- getAllUsers()){
models.add(new EntityDetachableModel[User](user))
}
models.iterator()
}
def populateItem(item: Item[User]) = {
val user = item.getModelObject // is this the same like final
User user = item.getModelObject() in Java?
//...
}
})
if val user = item.getModelObject is the same like:
final User user = item.getModelObject
then I can't use val for entity objects because they are not
serializable and outer class (RefreshingView) holds reference on its
final fields. Is it true?
So should I use always var for non serializable objects?
Thank you in advance for clarification.
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