Error JSon mapping from entity with AngularJS

here is my problem. i created a small project in java + spring mvc + hibernate + angularJS. i would like to display data from my Oracle DB.

i have those two objects :

@Entity
public class Survey {

@Id
@GeneratedValue
private int id;
private String fileReference;
private String typeFile;
private String prm;
private String status;
private String refGinkoAffair;
private String contratOwner;
private String fournisseur;

@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private GeneralData generalData;
    ...
}

and this one :

@Entity
public class GeneralData {

@Id
@GeneratedValue
private int id;

@OneToOne(mappedBy = "generalData")
private Survey survey;

private String comments;
private String matricule;

@Enumerated(EnumType.STRING)
@Column(name = "customer_type")
private CustomerType customerType;
 ...
}

to get the datas from my DB, i use these controller, with search this method :

@Controller
@RequestMapping(value = "/protected/originalSurvey")
public class OriginalSurveyController {

@Autowired
private SurveyService surveyService;

@Autowired
private MessageSource messageSource;

@RequestMapping(method = RequestMethod.GET)
public ModelAndView originalSurvey() {
    return new ModelAndView("originalSurvey");
}

@RequestMapping(value = "/{fileReference}", method = RequestMethod.GET, produces = "application/json")
public ResponseEntity<?> search(@PathVariable("fileReference") String fileReference,
        @RequestParam(required = false, defaultValue = "0") int page, Locale locale) {
    return search(fileReference, page, locale, null);
}

private ResponseEntity<?> search(String fileReference, int page, Locale locale, String actionMessageKey) {
    SurveyList surveyList = surveyService.findByFileReferenceLike(page, 1, fileReference);

    if (!StringUtils.isEmpty(actionMessageKey)) {
        addActionMessageToList(surveyList, locale, actionMessageKey, null);
    }

    Object[] args = { fileReference };

    addSearchMessageToList(surveyList, locale, "message.search.for.active", args);

    ResponseEntity<SurveyList> responseEntity = new ResponseEntity<SurveyList>(surveyList, HttpStatus.OK);

    return responseEntity;
}

and finally, i have these script in my file.js to get the data :

var config = {};

    config.params.page = $scope.pageToGet;
    config.params.searchFor = $scope.searchFor;

    $http.get(url, config)
        .success(function (data) {
            $scope.finishAjaxCallOnSuccess(data, "#searchRapportsModal", isPagination);
            $scope.displaySearchMessage = true;
        })
        .error(function(data, status, headers, config) {
            $scope.handleErrorInDialogs(status);
        });

So, the problem is quite simple, my var data is almost correct. In Fact, i don't have the generalData mapped in the object data... when i looked into the JSon response, i have this :

survey Object { id=1, status="actif", fileReference="0112547", more...}

id  1

status  "actif"

refGinkoAffair  null    
fileReference   "0112547"

typeFile null

contratOwner    "moi"

fournisseur "erdf"

prm "prm1"

As you can see, the generalData object is even not there ! the surprising thing is that the ResponseEntity Object in the java controller contains the generalData object ! i think it's the json mapping between my java file and my file.js who's incorrect, but i really don't know how to fix it

i hope i'm clear on what i'm looking for, and i reaaly hope someone can help me.

thanks you