Lazy loading not working in JPA with hibernate

Question

I am using JPA with hibernate in my spring boot application. Whenever I try to fetch the enities using jpa methods, its returning the entity plus all the association present ins

Answer 1

Was tricky to investigate but I had this issue as I was using mapstruct and it happens to do deep/ nested mapping and in the process, it calls getter of the lazy loaded property. The issue was resolved when I used mapstrct @BeforeMapping.

@Mapper
public interface HibernateAwareMapper {
    @BeforeMapping
    default <T> Set<T> fixLazyLoadingSet(Collection<?> c, @TargetType Class<?> targetType) {
        if (!Util.wasInitialized(c)) {
            return Collections.emptySet();
        }
        return null;
    }

    @BeforeMapping
    default <T> List<T> fixLazyLoadingList(Collection<?> c, @TargetType Class<?> targetType) {
        if (!Util.wasInitialized(c)) {
            return Collections.emptyList();
        }
        return null;
    }

   class Util {
       static boolean wasInitialized(Object c) {
           if (!(c instanceof PersistentCollection)) {
               return true;
           }

           PersistentCollection pc = (PersistentCollection) c;
           return pc.wasInitialized();
       }
   }
}

Ref. by kokorin