Scala: JavaFx Tableview does not display data - scala

Question

So I have tried to load in some data into my Tableview but it doesnt work because every time I start my application the tableview is empty but it doesn't show the prompt message that its actually empty.
My Code:
#FXML var anchorpane: AnchorPane = _
// Example for the Product Entity
#FXML var tableview: TableView[Product] = _
#FXML var c1: TableColumn[Product,Integer] = _
#FXML var c2: TableColumn[Product,String] = _
#FXML var c3: TableColumn[Product,Double] = _
//create data for inserting in an observerList
val data: ObservableList[Product] = FXCollections.observableArrayList(
new Product(55,"hallo",33.0)
new Product(10,"hello",20.3)
)
override def initialize(location: URL, resources: ResourceBundle): Unit = {
//Für die columns namen setzen
c1.setCellValueFactory(new PropertyValueFactory[Product,Integer]("id"))
c2.setCellValueFactory(new PropertyValueFactory[Product,String]("name"))
c3.setCellValueFactory(new PropertyValueFactory[Product,Double]("price"))
//inserting data from the observableArrayList
tableview.setItems(data)
}
But my tableview remains empty...
Here is how it looks like:
My Product class:
package fhj.swengb.homework.dbtool
import java.sql.{ResultSet, Connection, Statement}
import scala.collection.mutable.ListBuffer
/**
* Created by loete on 27.11.2015.
*/
object Product extends Db.DbEntity[Product] {
val dropTableSql = "drop table if exists product"
val createTableSql = "create table product (id integer, name string, price double)"
val insertSql = "insert into product (id, name, price) VALUES (?, ?, ?)"
def reTable(stmt: Statement): Int = {
stmt.executeUpdate(Product.dropTableSql)
stmt.executeUpdate(Product.createTableSql)
}
def toDb(c: Connection)(p: Product): Int = {
val pstmt = c.prepareStatement(insertSql)
pstmt.setInt(1, p.id)
pstmt.setString(2, p.name)
pstmt.setDouble(3, p.price)
pstmt.executeUpdate()
}
def fromDb(rs: ResultSet): List[Product] = {
val lb: ListBuffer[Product] = new ListBuffer[Product]()
while (rs.next()) lb.append(Product(rs.getInt("id"), rs.getString("name"), rs.getDouble("price")))
lb.toList
}
def queryAll(con: Connection): ResultSet = query(con)("select * from product")
}
case class Product(id:Int, name: String, price:Double) extends Db.DbEntity[Product] {
def reTable(stmt: Statement): Int = 0
def toDb(c: Connection)(t: Product): Int = 0
def fromDb(rs: ResultSet): List[Product] = List()
def dropTableSql: String = "drop table if exists product"
def createTableSql: String = "create table product (id integer, name String, price Double"
def insertSql: String = "insert into person (id, name, price) VALUES (?, ?, ?)"
}