Java 选择具有复合id的对象时休眠查询缓存

我很难弄清楚如何在以下实体上有效地使用查询缓存条件查询：

@Entity @Table(name = "category_configuration_values")
@Immutable
@Cacheable
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_ONLY)
public class CategoryConfigurationValue implements Serializable {
    private static final long serialVersionUID = 3L;
    private static final Logger LOGGER = LoggerFactory.getLogger(CategoryConfigurationValue.class);

    @EmbeddedId
    private CategoryConfigurationValuePk primaryKey;

    @Column(name = "value")
    private String value;

    @Override
    public boolean equals(Object o) { ... }

    @Override
    public int hashCode() { ... }
}

@Embeddable
@Cacheable
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_ONLY)
class CategoryConfigurationValuePk implements Serializable {
    private static final long serialVersionUID = 5068893389269876464L;

    @Column(name = "configuration_type_id")
    private int configurationTypeId;

    @Column(name = "category_id", columnDefinition = "smallint")
    private int categoryId;

    @Override
    public int hashCode() { ... }

    @Override
    public boolean equals(Object obj) { ... }

}

导致缓存未命中的标准之一是：

    Criteria criteria = getCurrentSession().createCriteria(CategoryConfigurationValue.class);
    criteria.setCacheable(true);
    criteria.setCacheRegion("query.AllConfigurationValuesForCategoriesAndAncestors");
    criteria.add(Restrictions.in("primaryKey.categoryId", categoryIds));

    List<CategoryConfigurationValue> allCategoryConfigurationValues = criteria.list();

如果我下次再执行它，我会得到很多以下信息，对我来说，这些信息看起来像是缓存未命中：

    Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
...

---

这里可能缺少什么？

如果启用了查询缓存，则需要显式地将类

CategoryConfiguration Value

添加为可缓存，然后将该类的所有实例标记为可缓存，这将解决您的问题

• 阿南莎·夏尔玛

---

如果启用了查询缓存，则需要显式地将类

CategoryConfigurationValue

添加为可缓存，然后将该类的所有实例标记为可缓存，这将解决您的问题

• 阿南莎·夏尔玛

    Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
Hibernate: select categoryco0_.category_id as category1_4_0_, categoryco0_.configuration_type_id as configur2_4_0_, categoryco0_.value as value4_0_ from category_configuration_values categoryco0_ where categoryco0_.category_id=? and categoryco0_.configuration_type_id=?
...