db object stub

service/src/main/java/objects/DBObject.java

+package objects;
+
+import helpers.PublicProperty;
+import objects.tasks.Task;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class DBObject
+{
+    public static String[] getPublicFields(Class<Task> taskClass) //todo: do not use argument
+    {
+        //todo: get upper class
+        Field[] declaredFields = taskClass.getDeclaredFields(); //todo: declared or not declared?
+        List<String> publicFieldsNames = Stream.of(declaredFields)
+                .filter(field -> field.getAnnotation(PublicProperty.class) != null)
+                .map(Field::getName)
+                .collect(Collectors.toList());
+
+        return publicFieldsNames.toArray(new String[publicFieldsNames.size()]);
+    }
+}

service/src/main/java/objects/tasks/Task.java

@@ -3,6 +3,7 @@ package objects.tasks;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import core.TaskType;
 import helpers.PublicProperty;
+import objects.DBObject;
 import objects.Flag;
 import org.bson.types.ObjectId;
 import org.mongodb.morphia.annotations.Entity;
@@ -15,7 +16,7 @@ import java.util.stream.Stream;
 
 @Entity("tasks")
 @JsonInclude(JsonInclude.Include.NON_NULL)
-public class Task
+public class Task extends DBObject
 {
     @Id
     private ObjectId id;
@@ -27,19 +28,6 @@ public class Task
     private List<Flag> flags;
     private TaskContent taskContent;
 
-    public static String[] getPublicFields()
-    {
-        //todo: move to db object?
-        //todo: move to task
-        Field[] declaredFields = Task.class.getDeclaredFields();
-        List<String> publicFieldsNames = Stream.of(declaredFields)
-                .filter(field -> field.getAnnotation(PublicProperty.class) != null)
-                .map(Field::getName)
-                .collect(Collectors.toList());
-
-        return publicFieldsNames.toArray(new String[publicFieldsNames.size()]);
-    }
-
     public Task(String name, int level, TaskType type, List<Flag> flags, TaskContent taskContent)
     {
         this.flags = flags;

service/src/main/java/repositories/TasksRepository.java

@@ -67,7 +67,7 @@ public class TasksRepository implements Repository
     public List<Task> getAllPublic()
     {
         return datastore.createQuery(Task.class)
-                .retrievedFields(true, Task.getPublicFields()) //todo: refactor
+                .retrievedFields(true, Task.getPublicFields(Task.class)) //todo: refactor
                 .asList();
     }