@OrderBy in combination with addJoinedAttribute("...") doesn't work?

Question

hi there,
@OrderBy beautifully works when the collection that has to be sorted is being fetched LAZY. But as soon as there is an attempt to join it in the query using query.addJoinedAttribute(“collectionToBeSorted”) I get no luck. Does it work as designed or I’m doing something wrong?
<code>
@OneToMany(cascade = CascadeType.ALL, mappedBy = "portalUser")
@OrderBy("position")
private List<UserConfig> config = new LinkedList<UserConfig>();
public class UserConfig implements Serializable {
@Column(name = "POSITION")
private Integer position;
Expression configJoin = builder.anyOfAllowingNone("config");
query.addJoinedAttribute(configJoin);
<code>
best regards,

Answer 1

The issue is that the orderBy for a query is determined by the root query, and for join-fetching the child rows need to be grouped with their parent. It still might be worthwhile entering a bug on this, as the 1-m order by may be able to be added to the query's order by.
In general I would recommend using batch reading (addBatchReadAttribute()) instead of join-fetching, as it is more efficient and will allow ordering.
James : http://www.eclipselink.org