Implement attributes helpers

1 files changed, 3 insertions, 6 deletions

diff --git a/src/org/traccar/events/MaintenanceEventHandler.java b/src/org/traccar/events/MaintenanceEventHandler.java
index 466e0b617..f423e035b 100644
--- a/src/org/traccar/events/MaintenanceEventHandler.java
+++ b/src/org/traccar/events/MaintenanceEventHandler.java
@@ -50,13 +50,10 @@ public class MaintenanceEventHandler extends BaseEventHandler {
         double newTotalDistance = 0.0;
 
         Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
-        if (lastPosition != null && lastPosition.getAttributes().containsKey(Position.KEY_TOTAL_DISTANCE)) {
-            oldTotalDistance = ((Number) lastPosition.getAttributes().get(Position.KEY_TOTAL_DISTANCE)).doubleValue();
-        }
-
-        if (position.getAttributes().containsKey(Position.KEY_TOTAL_DISTANCE)) {
-            newTotalDistance = ((Number) position.getAttributes().get(Position.KEY_TOTAL_DISTANCE)).doubleValue();
+        if (lastPosition != null) {
+            oldTotalDistance = lastPosition.getDouble(Position.KEY_TOTAL_DISTANCE);
         }
+        newTotalDistance = position.getDouble(Position.KEY_TOTAL_DISTANCE);
 
         oldTotalDistance -= maintenanceStart;
         newTotalDistance -= maintenanceStart;