[Simple-support] Question regarding maps

[Timo R. <cr...@ol...>]

Hello,

I have a question regarding the serialization of maps. Let's assume we
have the following two Classes:

--------------
  @Root( name = "UIDefinition" )
  public class UIAdapterModel {
      @ElementMap(entry="UserInterface", key="key", attribute=true, inline=true )
      public HashMap<String, UserInterface> userInterfaces = new HashMap<String, UserInterface>();
  }

  @Root
  public class UserInterface {
      @Element
      public String identifier = null;
  }
--------------

My serialization code looks like this:

--------------
  Serializer serializer = new Persister();
  UIAdapterModel model = new UIAdapterModel();
  model.userInterfaces.put("id1", new UserInterface("id1"));

  serializer.write(model, System.out);
--------------

(Note: The constructor of class "UserInterface" sets the "identifier"
member of that instance.)

What I now get the the following XML output:


  <UIDefinition>
     <UserInterface key="id1">
       <userInterface>
          <identifier>id1</identifier>
       </userInterface>
     </UserInterface>
  </UIDefinition>
  

My question is now, why is there the "<userInterface>" tag? What I 
wanted to have is just:


  <UIDefinition>
     <UserInterface key="id1">
          <identifier>id1</identifier>
     </UserInterface>
  </UIDefinition>


When I look at your example on the tutorial page of Simple XML in the 
"Dealing with map objects" section, the XML output is:

  <properties>
     <property key="one">first value</property>
     <property key="two">second value</property>
  </properties>
  
There is not another tag like in my output. Why is that? Perhaps 
because Strings are handled somewhat different than arbitrary classes? 
Is there a way to get an output without that "<userInterface>" tag?


Thanks a lot for your help!


Best regards,
Timo