Fix ArrayIndexOutOfBoundsException in CascadeDeletesJUnitTestSuite

The test CascadeDeletesJUnitTestSuite.testDeletePrivateOwned fails
occasionally with an ArrayIndexOutOfBoundsException. This happens when
the test picks a different related entity from a OneToMany relationship
that the test actually intends to.
Adding an @orderby annotation to the relationship guarantees that always
the desired entity is retrieved.

Bug 401413

Signed-off-by: Sabine Heider <sabine.heider@sap.com>

jpa/eclipselink.jpa.test/src/org/eclipse/persistence/testing/models/jpa/cascadedeletes/BranchB.java

@@ -13,6 +13,7 @@
 import javax.persistence.Id;
 import javax.persistence.ManyToMany;
 import javax.persistence.OneToMany;
+import javax.persistence.OrderBy;
 
 import org.eclipse.persistence.annotations.PrivateOwned;
 
@@ -24,6 +25,7 @@ public class BranchB implements Serializable, PersistentIdentity{
 
     @PrivateOwned
     @OneToMany(fetch = LAZY, cascade = REMOVE)
+    @OrderBy("id")
     protected List<BranchB> branchBs;
 
     @ManyToMany(fetch = LAZY, cascade = REMOVE)