java - Mapping freeform XML/JSON to Moxy/JAXB annotated class -

i'm trying find way correctly map following xml/json document equivalent jaxb/moxy annotated class.
note model element of document, in example describes person, freeform, i.e. might any kind of xml element/json object, not statically known.

xml document:

<form>    <title>person form</title>    <model>       <person>          <name>john</name>          <surname>smith</surname>          <address>            <street>main st.</street>            <city>ny</city>            <country>usa</country>          </address>      <person>    </model> </form> 

equivalent json document:

{      "title":"form title",      "model":{         "person":{            "name":"john",            "surname":"smith",            "address":{               "street":"main st.",               "city":"ny",               "country":"usa"            }                 }      } } 

i thought map model field map, values might primitive types or map themselves. mapping enough expressive needs.

i tried play @xmlreadtransformer, @xmlwritetransformer moxy annotations, no success (the record parameter in buildattributevalue null)

@xmlrootelement @xmlaccessortype(xmlaccesstype.field)  public class form {    private string title;     private model model;    ....getters , setters.... }  @xmlrootelement @xmlaccessortype(xmlaccesstype.field) public class model {      @xmlelement     @xmlreadtransformer(transformerclass = transformer.class)     @xmlwritetransformers({ @xmlwritetransformer(xmlpath = "./*", transformerclass = transformer.class) })     private map<string, object> data;      public map<string, object> getdata() {         return data;     }      public void setdata(map<string, object> data) {         this.data = data;     }      public static class transformer implements attributetransformer, fieldtransformer {          private abstracttransformationmapping tm;          public transformer() {         }          @override         public void initialize(abstracttransformationmapping tm) {             this.tm = tm;         }          @override         public map<string, object> buildattributevalue(record r, object o,                 session s) {             map<string, object> data = new hashmap<string, object>();             // todo: ????             return data;         }          @override         public object buildfieldvalue(object arg0, string arg1, session arg2) { // todo             return null;         }      } } 

can suggest me proper way of solve problem or different way of modeling "model" field?

is person (or whatever other class have) class available @ runtime? xml/json modified include type attribute indicates class corresponds to? if example here may http://blog.bdoughan.com/2012/02/xmlanyelement-and-xmladapter.html

your model have

@xmlanyelement private list<parameter> data; 

and using parameteradapter in linked example need include type attribute using in xml , json

{    "title" : "form title",    "model" : {       "person" : {          "type" : "test.person",          "name" : "john",          "surname" : "smith", ... } 

or

<form>    <title>person form</title>    <model>       <person type="test.person">          <name>john</name>          <surname>smith</surname> ... </form>