[Simple-support] @ElementList

[<jo...@va...>]

Hi,
 
I have this set of custom classes:
PLBigDecimal, PLBoolean, PLData, PLDate, PLNumber, PLString: these all implement the interface PLObject
PLKey (does not implement interface PLObject).
 
@ElementMap(name = "dict", 
       key = "key", keyType = PLKey.class,
       required = false, inline = false)
private Map<PLKey, PLObject> plDictionary;
 
The XML looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<plist version="1.0">
       <date>2012-11-30T10:14:00Z</date>
       <dict>
              <key>key01</key><string>value01</string>
              <key>key02</key><string>value02</string>
              <key>key03</key><string>value03</string>
       </dict>
       <real>150.0</real>
       <integer>500</integer>
       <string>myPLString</string>
       <true/>
       <false/>
</plist>
 
How can I parse the <dict> structure.
My current (see above) annotation gives me this error:
Cannot instantiate interface PLObject for interface PLObject
 
How can I use this Map<PLKey, PLObject> so that it can hold any combination of PLKey and my PLObject interface (PLString, PLBigDecimal, …)?
Can this be done at all with simpleXML? 
 
Any help on the map topic is appreciated!
 
The second thing:
    @Element(name = "true", required = false)
    @Convert(PLBooleanConverter.class)
    private PLBoolean plTrue;
    
    @Element(name = "false", required = false)    
    @Convert(PLBooleanConverter.class)
    private PLBoolean plFalse;
 
Is it possible to bind two xml elements to one object?
The above works but I am looking for something like (map two xml tags to one object):
    @ElementUnion({
      @Element(name = "false", required = false),
      @Element(name = "true", required = false)
    })   
    @Convert(PLBooleanConverter.class)
    private PLBoolean plBoolean;
 
Thanks
Jochen 
 
PS: Implementation for my root xml element, The ElementList is not working for the same reason (interface cannot be instantiated)
 
@Root(name = "plist")
public class PropertyList{
       
    @ElementMap(name = "dict", 
                     key = "key", keyType = PLKey.class,
                     required = false, inline = false)
    private Map<PLKey, PLObject> plDictionary;
    
    @ElementList(name = "array", required = false)
    private List<PLObject> plArray;
    
    @Element(name = "real", required = false)
    @Convert(PLNumberConverter.class)
    private PLNumber plReal;
    
    @Element(name = "integer", required = false)
    @Convert(PLNumberConverter.class)
    private PLNumber plInteger;
    
    @Element(name = "string", required = false)
    @Convert(PLStringConverter.class)
    private PLString plString;
    
    @Element(name = "data", required = false)
    @Convert(PLDataConverter.class)
    private PLData plData;
    
    @Element(name = "date", required = false)
    @Convert(PLDateConverter.class)
    private PLDate plDate;
    
    @Element(name = "true", required = false)
    @Convert(PLBooleanConverter.class)
    private PLBoolean plTrue;
    
    @Element(name = "false", required = false)    
    @Convert(PLBooleanConverter.class)
    private PLBoolean plFalse;    
   
    @Attribute(required = true)
    private String version;
    
    public PropertyList(){
       
       super();
    }
}