Students registered satistics

buisnesslogic/src/main/java/com/plannaplan/repositories/CommisionRepository.java

@@ -10,17 +10,15 @@ import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 /**
- *  CommisionRepository.getUsers:
- *      Return list of:
- *      SELECT * FROM Commision WHERE owner_id = i .
+ * CommisionRepository.getUsers: Return list of: SELECT * FROM Commision WHERE
+ * owner_id = i .
  * 
- *      Where i, ?1 are equale to variables. 
+ * Where i, ?1 are equale to variables.
  * 
- *  CommisionRepository.getNewestCommision
- *      Return list of:
- *      SELECT * FROM Commision WHERE owner_id = i Order by commisionDate desc.
+ * CommisionRepository.getNewestCommision Return list of: SELECT * FROM
+ * Commision WHERE owner_id = i Order by commisionDate desc.
  * 
- *      Where i, ?1 are equale to variables.      
+ * Where i, ?1 are equale to variables.
  */
 @Repository
 public interface CommisionRepository extends JpaRepository<Commision, Long> {
@@ -30,4 +28,10 @@ public interface CommisionRepository extends JpaRepository<Commision, Long> {
     @Query("FROM Commision WHERE owner_id = ?1 order by commisionDate desc")
     List<Commision> getNewestCommision(@Param("owner_id") Long id);
 
+    /**
+     * @return ammount of uniqe users that have a commision placed on first array
+     *         element
+     */
+    @Query("SELECT COUNT(DISTINCT owner_id) AS count FROM Commision")
+    Object[] getUsersAssigned();
 }

buisnesslogic/src/main/java/com/plannaplan/services/UserService.java

@@ -8,6 +8,7 @@ import java.util.stream.Collectors;
 import com.plannaplan.entities.User;
 import com.plannaplan.exceptions.UserNotFoundException;
 import com.plannaplan.models.UserApiResponse;
+import com.plannaplan.repositories.CommisionRepository;
 import com.plannaplan.repositories.UserRepository;
 import com.plannaplan.types.UserRoles;
 
@@ -25,6 +26,9 @@ public class UserService {
     @Autowired
     private UsosApiService service;
 
+    @Autowired
+    private CommisionRepository comRepo;
+
     public UserService() {
         super();
     }
@@ -169,4 +173,17 @@ public class UserService {
         }).collect(Collectors.toList());
     }
 
+    /**
+     * @return ammount of how many users created an assignment
+     */
+    public int getAmmountOfUsersWithAssignedGroups() {
+        int response = 0;
+
+        final Object dbResponse = this.comRepo.getUsersAssigned()[0];
+        if (dbResponse != null) {
+            response = ((Long) dbResponse).intValue();
+        }
+        return response;
+    }
+
 }