Question

Say I have a class Mother with a oneToMany mapping to Kittens

@Entity
@org.hibernate.annotations.Entity(dynamicUpdate = true)
@Table(name = "Mother")

.....

@OneToMany(fetch = FetchType.LAZY, targetEntity=Kittens.class, cascade=CascadeType.ALL)
@JoinColumn(name="motherId")
private List<Kittens> kittens;

I am using the criteria Api to provide a list

Criteria criteria = this.getSession().createCriteria(Mother.class);
Criterion MotherType = Restrictions.eq("type", "domesticated");
criteria.add(MotherType)
.addOrder(Order.asc("motherName"))
.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY)
.setFetchMode("kittens", FetchMode.JOIN)
// .addOrder(Order.asc("kittens.kittenName"));
List test = criteria.list();

Works fine until I try to add the order of the kittens field kittenName

I’ve also tried adding the @OrderBy(value=”kittenName”) annotation under the Kitten @OneToMany(…etc ) which works fine until you use the criteria API and this order will precede any other order statements in the sql.

Cheers in advance for any help…

Answer 1

You need to add the @javax.persistence.OrderBy annotation to your kittens list.

@OneToMany(fetch = FetchType.LAZY,
           targetEntity=Kittens.class,
           cascade=CascadeType.ALL)
@JoinColumn(name="motherId")
@OrderBy("kittenName")
private List<Kittens> kittens;

@See

• Hibernate Annotations Reference Guide
• Chapter 2.2.5. Mapping entity associations/relationships
• Subchapter 2.2.5.3.4. Indexed collections (List, Map)