[Simple-support] can't serialize an object which uses a parametrized hashmap

[Joe <fis...@ya...>]

Hi,

the following code throws an exception.
But if i replace T by String, serialization is no problem.

Why the parametrized version doesn't work?

Version: 2.0.4

import java.io.File;
import java.util.HashMap;

import org.simpleframework.xml.ElementMap;
import org.simpleframework.xml.Serializer;
import org.simpleframework.xml.core.Persister;

public class MyMap<T>
{
  @ElementMap
  private HashMap<T, String> map = new HashMap<T, String>();

  public static void main(String[] args)
  {
    try
    {
      serialize(new MyMap<String>());
      System.out.println("done");
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }

  private static void serialize(Object data) throws Exception
  {
    Serializer serializer = new Persister();
    File xmlFile = new File("test.xml");
    serializer.write(data, xmlFile);
  }
}