我正在尝试从具有包含ElementCollection的嵌入式实体的对象中查询
enum class MyEnum {VALUE1, VALUE2}
data class MyObject(
@Embedded
val embedded: EmbeddedObject? = EmbeddedObject(),
)
@Embeddable
data class EmbeddedObject(
@ElementCollection(targetClass = MyEnum::class)
@CollectionTable(name = "t_my_enum", joinColumns = [JoinColumn(name = "fk_my_object")])
@Column(name = "enum_value")
@Enumerated(value = STRING)
val enumValues: Set<MyEnum> = mutableSetOf(),
}
我现在正在尝试过滤结果以包含MyEnum
中的一组值。当前方法(不起作用):
val myFilter = mutableSetOf(VALUE1)
val criteria: CriteriaBuilder = entityManager.criteriaBuilder
val query: CriteriaQuery<MyObject> = criteria.createQuery(MyObject::class.java)
val root: Root<MyObject> = query.from(MyObject::class.java)
root.where(root.get<EmbeddedObject>("embedded").get<Set<MyEnum>>("enumValues").`in`(myFilter)))
此操作失败,并显示以下错误消息:
java.lang.IllegalArgumentException: Parameter value [VALUE1] did not match expected type [java.util.Set (n/a)]
我也尝试加入EmbeddedObject或enumValues列,但两者均无效。