When a collection is defined on a mappedsuperclass:
{code:java}
@MappedSuperclass
public abstract class RelatedToEvents extends Base {
protected Set<Event> events = new LinkedHashSet<>();
public void setEvents(Set<Event> events) {
this.events = events;
}
}
{code}
extended by
{code:java}
@Entity
@Inheritance(strategy = InheritanceType.JOINED)
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class RequestWithEagerEvents extends RelatedToEvents {
@ManyToMany(fetch = FetchType.EAGER)
@Fetch(FetchMode.SELECT)
public Set<Event> getEvents() {
return events;
}
}
{code}
and
{code:java}
@Entity
@Inheritance(strategy = InheritanceType.JOINED)
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class RequestWithLazyEvents extends RelatedToEvents {
@ManyToMany(fetch = FetchType.LAZY)
@Fetch(FetchMode.SELECT)
public Set<Event> getEvents() {
return events;
}
}
{code}
Accessing the collection lazily after getting the entity from database returns no results, but results when loaded eagerly. When the collection property is moved outside the @MappedSuperclass or without bytecode enhancement, everything works.
Test case: https://github.com/nikowitt/hibernate-test-case-templates/tree/HHH- 12061 12601-eager-lazy-mappedsuperclass-collection |
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