java - Spring Jackson JsonViews - Get Fields based on JsonView -

i've got entity number of fields , jsonview specified:

public class client {     @jsonview(views.clientview.class)    @column(name = "clientid")    private long clientid;     @jsonview(views.clientview.class)    @column(name = "name")    private string name     @jsonview(views.systemview.class)    @column(name = "istest")    private boolean istest;    .........  } 

the views defined follows:

public class views {    public interface systemview extends clientview {   }    public interface clientview {   } } 

i have simple controller in order update client. since field istest set systemview, don't want client update field.

i've read in order posts, has done manually first loading client , updating parameters accordingly (in case clientid , name).

now want list of fields need update (i.e. fields marked jsonview views.clientview.class). i've tried following it's not working:

objectreader reader = objectmapper.readerwithview(systemview.class); contextattributes attributes = reader.getattributes(); 

but, attributes returning without elements.

is there way list of fields based on view?

you can try access , inspect annotations of fields in class reflection likes:

list<field> annotatedfields = new arraylist<>(); field[] fields = client.class.getdeclaredfields(); (field field : fields) {     if (!field.isannotationpresent(jsonview.class)) {         continue;     }     jsonview annotation = field.getannotation(jsonview.class);     if (arrays.aslist(annotation.value()).contains(views.systemview.class)) {         annotatedfields.add(field);     } } 

in above example, annotatedfields contain list of fields in client class annotated jsonview value contains views.systemview.class.