java - Json ObjectMapper unable to read Json value -

i have enum class

public enum cachetype {     none("none"), nonstrict_read_write("nonrestrictreadwrite"), read_only("readonly"), read_write("readwrite");      private final string text;      private cachetype(final string text) {         this.text = text;     }     @jsonvalue     public string gettext()     {         return text;     } } 

now have table class

public class table {     private cachetype cachetype;     .... getters , setters } 

now if json sent spring controller table constructed cachetype set. till okay.

now doing unit test read json test file follows , convert object:

import com.fasterxml.jackson.databind.objectmapper; private final objectmapper mapper = new objectmapper(); table= mapper.readvalue(file, table.class); 

here cachetype set null. rest of table attributes set properly. how can read cachetype properly

{  "tables":[    {       "name": "dummyusers",       "namespace": "",       "cachetype": "readwrite"    },    {       "name": "adminusers",       "namespace": "",       "cachetype": "nonrestrictreadwrite"    },    {       "name": "superusers",       "namespace": "",       "cachetype": "none"    }   ]  }