我正在使用带有 JPA 2.1 的Spring数据来检索具有分页和放大器的实体。使用以下方法的规范（标准构建者）：
final static如何在此方法上指定Page<T> findAll(Specification<T> spec, Pageable pageable)
？是的，如果我用@EntityGraph注释，Spring会停止分页并一次性获取整个数据。
答案 0 :(得分：0)
请删除@NamedAttributeNode 到许多enter image description here，并尝试调试org.hibernate.hql.internal.ast.QueryTranslatorImplenter image description here 。请注意RowSelection。我修复了'bug'
答案 1 :(得分：0)
@EqualsAndHashCode(callSuper = true)
@Data
@Entity
@Table(name = "cd_order")
@Where(clause = "deleted = " + UN_DELETED)
@NamedEntityGraphs(value = {
@NamedEntityGraph(name = "findAll", attributeNodes =
{@NamedAttributeNode(value = "company"),
@NamedAttributeNode(value = "partnerCompany"),
// remove one to many , @NamedAttributeNode(value = "orderOssUrls"),
@NamedAttributeNode(value = "patient")
})}
)
public class Order extends BaseEntity {
@Column(name = "patient_id", insertable = false, updatable = false, columnDefinition = " BIGINT NOT NULL COMMENT '订单id' ")
private Long patientId;
@OneToOne(fetch = FetchType.EAGER)
@Fetch(FetchMode.JOIN)
@NotFound(action = NotFoundAction.IGNORE)
@JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), name = "patient_id", referencedColumnName = "id")
private Patient patient;
@Column(name = "patient_name", columnDefinition = " VARCHAR(48) COMMENT '案例编号' ")
private String patientName;
@Column(name = "case_code", columnDefinition = " VARCHAR(48) NOT NULL COMMENT '案例编号' ")
private String caseCode;
@Column(name = "company_id", insertable = false, updatable = false, columnDefinition = " BIGINT COMMENT 'companyId' ")
private Long companyId;
@OneToOne(fetch = FetchType.EAGER)
@Fetch(FetchMode.JOIN)
@JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), name = "company_id", referencedColumnName = "id")
@NotFound(action = NotFoundAction.IGNORE)
private Company company;
@Column(name = "partner_company_id", insertable = false, updatable = false, columnDefinition = " BIGINT COMMENT '合作伙伴的companyId' ")
private Long partnerCompanyId;
@OneToOne(fetch = FetchType.EAGER)
@Fetch(FetchMode.JOIN)
@JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), name = "partner_company_id", referencedColumnName = "id")
@NotFound(action = NotFoundAction.IGNORE)
private Company partnerCompany;
@Column(name = "order_id", columnDefinition = " BIGINT NOT NULL COMMENT '订单id' ")
private Long orderId;
@Fetch(FetchMode.JOIN)
@NotFound(action = NotFoundAction.IGNORE)
@JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT), name = "order_id", referencedColumnName = "order_id")
@OneToMany(fetch = FetchType.LAZY)
private List<OrderOssUrl> orderOssUrls;
@Column(name = "recovery_info", columnDefinition = " VARCHAR(128) COMMENT '恢复信息' ")
private String recoveryInfo;
/**
* 交货日期
*/
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
@Column(name = "submit_time", columnDefinition = " datetime COMMENT '请求交货日期' ")
private LocalDateTime submitTime;
/**
* 订购日期
*/
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
@Column(name = "order_time", columnDefinition = " datetime COMMENT '订购日期' ")
private LocalDateTime orderTime;
/**
* 扫描日期
*/
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
@Column(name = "scan_time", columnDefinition = " datetime COMMENT '扫描日期' ")
private LocalDateTime scanTime;
@Enumerated(value = EnumType.STRING)
@Column(name = "order_type", columnDefinition = " VARCHAR(20) NOT NULL COMMENT '订单类型' ")
private OrderTypeEnum orderType;
@Enumerated(value = EnumType.STRING)
@Column(name = "cc_order_status", columnDefinition = " VARCHAR(20) COMMENT '诊所订单状态' ")
private OrderStatusEnum ccOrderStatus;
@Enumerated(value = EnumType.STRING)
@Column(name = "lab_order_status", columnDefinition = " VARCHAR(20) COMMENT '工厂订单状态' ")
private OrderStatusEnum labOrderStatus;
/**
* @param orderType 订单类型
*/
public void init(@NonNull OrderTypeEnum orderType) {
generateCaseCode();
if (orderType == OrderTypeEnum.CLINIC) {
this.setCcOrderStatus(OrderStatusEnum.NEW);
} else {
this.setLabOrderStatus(OrderStatusEnum.NEW);
}
this.setOrderType(orderType);
this.setOrderId(GlobalUniqueIdGeneratorUtils.generateOrderId());
}
/**
* 设置案例编号
*/
private void generateCaseCode() {
this.setCaseCode(getYMDStrCurrently() + "-" + this.getPatient().getName());
}
}
public interface OrderRepository extends BaseRepository<Order, Long> {
@NonNull
@EntityGraph(value = "findAll", type = EntityGraph.EntityGraphType.LOAD)
Page<Order> findAll(Specification<Order> specification, @NonNull Pageable pageable);
}
sql
select order0_.id as id1_5_0_,
patient1_.id as id1_9_1_,
company2_.id as id1_1_2_,
company3_.id as id1_1_3_,
order0_.create_time as create_t2_5_0_,
order0_.deleted as deleted3_5_0_,
order0_.update_time as update_t4_5_0_,
order0_.version as version5_5_0_,
order0_.case_code as case_cod6_5_0_,
order0_.cc_order_status as cc_order7_5_0_,
order0_.company_id as company_8_5_0_,
order0_.lab_order_status as lab_orde9_5_0_,
order0_.order_id as order_i10_5_0_,
order0_.order_time as order_t11_5_0_,
order0_.order_type as order_t12_5_0_,
order0_.partner_company_id as partner13_5_0_,
order0_.patient_id as patient14_5_0_,
order0_.patient_name as patient15_5_0_,
order0_.recovery_info as recover16_5_0_,
order0_.scan_time as scan_ti17_5_0_,
order0_.submit_time as submit_18_5_0_,
patient1_.create_time as create_t2_9_1_,
patient1_.deleted as deleted3_9_1_,
patient1_.update_time as update_t4_9_1_,
patient1_.version as version5_9_1_,
patient1_.activity_time as activity6_9_1_,
patient1_.day as day7_9_1_,
patient1_.email as email8_9_1_,
patient1_.month as month9_9_1_,
patient1_.name as name10_9_1_,
patient1_.note as note11_9_1_,
patient1_.phone as phone12_9_1_,
patient1_.sex as sex13_9_1_,
patient1_.year as year14_9_1_,
company2_.create_time as create_t2_1_2_,
company2_.deleted as deleted3_1_2_,
company2_.update_time as update_t4_1_2_,
company2_.version as version5_1_2_,
company2_.additional_info_id as addition6_1_2_,
company2_.address as address7_1_2_,
company2_.biz_type as biz_type8_1_2_,
company2_.cell_phone as cell_pho9_1_2_,
company2_.city as city10_1_2_,
company2_.country_code as country11_1_2_,
company2_.country_name as country12_1_2_,
company2_.description as descrip13_1_2_,
company2_.icon as icon14_1_2_,
company2_.language as languag15_1_2_,
company2_.mechanism_id as mechani16_1_2_,
company2_.name as name17_1_2_,
company2_.office_phone as office_18_1_2_,
company2_.postcode as postcod19_1_2_,
company2_.province as provinc20_1_2_,
company2_.time_zone as time_zo21_1_2_,
company3_.create_time as create_t2_1_3_,
company3_.deleted as deleted3_1_3_,
company3_.update_time as update_t4_1_3_,
company3_.version as version5_1_3_,
company3_.additional_info_id as addition6_1_3_,
company3_.address as address7_1_3_,
company3_.biz_type as biz_type8_1_3_,
company3_.cell_phone as cell_pho9_1_3_,
company3_.city as city10_1_3_,
company3_.country_code as country11_1_3_,
company3_.country_name as country12_1_3_,
company3_.description as descrip13_1_3_,
company3_.icon as icon14_1_3_,
company3_.language as languag15_1_3_,
company3_.mechanism_id as mechani16_1_3_,
company3_.name as name17_1_3_,
company3_.office_phone as office_18_1_3_,
company3_.postcode as postcod19_1_3_,
company3_.province as provinc20_1_3_,
company3_.time_zone as time_zo21_1_3_
from cd_order order0_
left outer join cd_patient patient1_ on order0_.patient_id = patient1_.id
left outer join cd_company company2_ on order0_.partner_company_id = company2_.id
left outer join cd_company company3_ on order0_.company_id = company3_.id
where (order0_.deleted = 0)
and order0_.order_id >= 1
and (order0_.case_code like '%case%')
and patient1_.year >= 1
and patient1_.month >= 1
and patient1_.day >= 1
and patient1_.sex = 'MALE'
and (patient1_.phone like '%phone%')
and (patient1_.name like '%name%')
and (order0_.update_time between '2021-06-23 14:40:53.101831' and '2021-06-27 14:40:53.101944')
order by order0_.create_time asc, order0_.submit_time desc
limit 10