Prevented possible NullPointerException's

[jpa-converters] / src / main / java / de / juplo / jpa / converters / ZoneIdConverter.java

diff --git a/src/main/java/de/juplo/jpa/converters/ZoneIdConverter.java b/src/main/java/de/juplo/jpa/converters/ZoneIdConverter.java
index 57f3ba1..6266ad0 100644 (file)
--- a/src/main/java/de/juplo/jpa/converters/ZoneIdConverter.java
+++ b/src/main/java/de/juplo/jpa/converters/ZoneIdConverter.java
@@ -15,12 +15,16 @@ public class ZoneIdConverter implements AttributeConverter<ZoneId,String>
   @Override
   public String convertToDatabaseColumn(ZoneId zone)
   {
+    if (zone == null)
+      return null;
     return zone.getId();
   }
 
   @Override
   public ZoneId convertToEntityAttribute(String string)
   {
+    if (string == null)
+      return null;
     return ZoneId.of(string);
   }
 }