refactor: refactor DTOMapper so it does not use static attributes

src/main/java/io/patriotframework/virtualsmarthomeplus/Mapper/DTOMapper.java

@@ -14,46 +14,39 @@
 import io.patriotframework.virtualsmarthomeplus.house.devices.finalDevices.Thermometer;
 import org.modelmapper.ModelMapper;
 import org.modelmapper.TypeMap;
-import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Service;
 
 import java.util.HashMap;
 import java.util.stream.Collectors;
 
 /**
  * Class responsible for mapping model objects to DTOs
  */
-@Component
+@Service
 public class DTOMapper {
-    private static final HashMap<Class<? extends Device>, Class<? extends DeviceDTO>> CLASS_TO_DTO;
-    private static final HashMap<Class<? extends DeviceDTO>, Class<? extends Device>> DTO_TO_CLASS;
+    private final HashMap<Class<? extends Device>, Class<? extends DeviceDTO>> CLASS_TO_DTO = new HashMap<>();
+    private final HashMap<Class<? extends DeviceDTO>, Class<? extends Device>> DTO_TO_CLASS = new HashMap<>();
 
-    static {
-        CLASS_TO_DTO = new HashMap<>();
+    private final ModelMapper modelMapper;
+
+    /**
+     * Constructs DTOMapper for all instances of the House interface
+     *
+     * @param modelMapper instance of ModelMapper
+     */
+    public DTOMapper(ModelMapper modelMapper) {
         CLASS_TO_DTO.put(Device.class, DeviceDTO.class);
         CLASS_TO_DTO.put(Fireplace.class, FireplaceDTO.class);
         CLASS_TO_DTO.put(Door.class, DoorDTO.class);
         CLASS_TO_DTO.put(Thermometer.class, ThermometerDTO.class);
         CLASS_TO_DTO.put(RGBLight.class, RGBLightDTO.class);
-    }
 
-    static {
-        DTO_TO_CLASS = new HashMap<>();
         DTO_TO_CLASS.put(DeviceDTO.class, Device.class);
         DTO_TO_CLASS.put(FireplaceDTO.class, Fireplace.class);
         DTO_TO_CLASS.put(DoorDTO.class, Door.class);
         DTO_TO_CLASS.put(ThermometerDTO.class, Thermometer.class);
         DTO_TO_CLASS.put(RGBLightDTO.class, RGBLight.class);
 
-    }
-
-    private final ModelMapper modelMapper;
-
-    /**
-     * Constructs DTOMapper for all instances of the House interface
-     *
-     * @param modelMapper instance of ModelMapper
-     */
-    public DTOMapper(ModelMapper modelMapper) {
         this.modelMapper = modelMapper;
 
         final TypeMap<FireplaceDTO, Fireplace> fireplaceTypeMap = this.modelMapper