Cassandra - unable to parse list of Tuple with Java driver -

i trying access tuple data structure have stored in cassandra mapper. but, unable to. haven't found example online.

this table , data have created.

cqlsh:test> create table test.test_nested (id varchar primary key, address_mapping list<frozen<tuple<text,text>>>); cqlsh:test> insert test.test_nested (id, address_mapping) values ('12345', [('adress 1', 'pin1'), ('adress 2', 'pin2')]); cqlsh:test> cqlsh:test> select * test.test_nested;  id    | address_mapping -------+---------------------------------------------- 12345 | [('adress 1', 'pin1'), ('adress 2', 'pin2')]  (1 rows) 

my mapped class(using lombok builder, getter, setter):

@builder @table(keyspace = "test", name = "test_nested") public class testnested {      @partitionkey     @column(name = "id")     @getter     @setter     private string id;      @column(name = "address_mapping")     @frozen     @getter     @setter     private list<object> address_mapping; } 

my mapper class: public class testnestedstore {

private final mapper<testnested> mapper;  public testnestedstore(mapper<testnested> mapper) {     this.mapper = mapper; }   public void insert(testnested userdropdata) {     mapper.save(userdropdata); }   public void remove(string id) {     mapper.delete(id); }  public testnested findbyuserid(string id) {     return mapper.get(id); }  public listenablefuture<testnested> findbyuseridasync(string id) {     return mapper.getasync(id); } } 

i trying access data in test method follows:

    @test public void testconnection2(){      mappingmanager manager = new mappingmanager(scylladbconnector.getsession());     mapper<testnested> mapper = manager.mapper(testnested.class);      testnestedstore testnestedstore = new testnestedstore(mapper);      listenablefuture<testnested> fut = testnestedstore.findbyuseridasync("12345");     futures.addcallback(fut, new futurecallback<testnested>() {          @override         public void onsuccess(testnested testnested) {          }          @override         public void onfailure(throwable throwable) {              system.out.println("call failed");         }     });  } 

bit, unable access tuple. error:

java.lang.illegalargumentexception: error while checking frozen types on field address_mapping of entity com.example.model.testnested: expected list not frozen frozen  @ com.datastax.driver.mapping.annotationchecks.validateannotations(annotationchecks.java:73) @ com.datastax.driver.mapping.annotationparser.parseentity(annotationparser.java:81) @ com.datastax.driver.mapping.mappingmanager.getmapper(mappingmanager.java:148) @ com.datastax.driver.mapping.mappingmanager.mapper(mappingmanager.java:105) 

i have tried private list<tuplevalue> address_mapping;. of no use!

how access tuple values through object mapper of cassandra?