我正在使用带有 Hibernate 的 Java 1.7。
我有下表:
CREATE TABLE public.approvalautoselectionconfig
(
id bigint NOT NULL,
active boolean NOT NULL,
approvalstrategy character varying(255) COLLATE pg_catalog."default",
costcentreid bigint,
createuser bigint,
merchantid bigint,
uri character varying(255) COLLATE pg_catalog."default",
company bytea,
costcentre bytea,
CONSTRAINT approvalautoselectionconfig_pkey PRIMARY KEY (id),
CONSTRAINT approvalautoselectionconfig_costcentreid_fk FOREIGN KEY (costcentreid)
REFERENCES public.lob (lobid) MATCH SIMPLE
ON UPDATE NO ACTION
ON DELETE NO ACTION
NOT VALID,
CONSTRAINT approvalautoselectionconfig_merchantid_fk FOREIGN KEY (merchantid)
REFERENCES public.merchants (merchant_id) MATCH SIMPLE
ON UPDATE NO ACTION
ON DELETE NO ACTION
NOT VALID
)
和
CREATE TABLE public.merchants
(
merchant_id bigint NOT NULL,
company_name character varying(255) COLLATE pg_catalog."default",
trading_as character varying(255) COLLATE pg_catalog."default",
store_name character varying(255) COLLATE pg_catalog."default",
registration_number character varying(50) COLLATE pg_catalog."default",
url character varying(80) COLLATE pg_catalog."default",
receive_email integer,
receive_news integer,
created timestamp without time zone,
bank_mer_id character varying(20) COLLATE pg_catalog."default",
location_id integer,
member_id bigint,
mer_type_id integer,
logourl character varying(200) COLLATE pg_catalog."default",
vatnumber character varying(255) COLLATE pg_catalog."default",
logourllarge character varying(255) COLLATE pg_catalog."default",
autogenerateorder integer,
carsuperwaiver boolean,
carwaivertype character varying(255) COLLATE pg_catalog."default",
logourlsecondary character varying(255) COLLATE pg_catalog."default",
autogenerateordernumberscenario character varying(255) COLLATE pg_catalog."default",
allowtravellercalendar boolean,
auto_email_itinerary_documents integer DEFAULT 0,
email_calendar_appointments integer DEFAULT 0,
personalassistantname integer,
purchaseorder integer,
projectnumber integer,
autovoucher boolean,
autovoucher_email character varying(255) COLLATE pg_catalog."default",
customer_no character varying(255) COLLATE pg_catalog."default",
office_number integer,
viptravellerreason boolean,
CONSTRAINT merchants_pkey PRIMARY KEY (merchant_id),
CONSTRAINT fkd1c98f8b56d4a048 FOREIGN KEY (mer_type_id)
REFERENCES public.merchant_type (merchanttypeid) MATCH SIMPLE
ON UPDATE NO ACTION
ON DELETE NO ACTION
NOT VALID,
CONSTRAINT fkd1c98f8b82f76ace FOREIGN KEY (member_id)
REFERENCES public.members (member_id) MATCH SIMPLE
ON UPDATE NO ACTION
ON DELETE NO ACTION
NOT VALID
)
我有以下实体:
@Entity(name = "ApprovalAutoSelectionConfiguration")
@Table(name = "approvalautoselectionconfig")
@NamedQueries({
@NamedQuery(name = "ApprovalAutoSelectionConfiguration.findByMerchantId", query = "SELECT o FROM ApprovalAutoSelectionConfiguration o, Merchants m WHERE m.merchant_id = o.merchantid AND o.merchantid = ?1"),
@NamedQuery(name = "ApprovalAutoSelectionConfiguration.findByMerchantIdAndUri", query = "SELECT o FROM ApprovalAutoSelectionConfiguration o, Merchants m WHERE m.merchant_id = o.merchantid AND o.merchantid = ?1 AND o.uri = ?2")})
public class ApprovalAutoSelectionConfiguration implements Serializable
{
private static final long serialVersionUID = 1604255007323958024L;
@Id
@SequenceGenerator(allocationSize = 1, name = "seq_approvalautoselectionconfig_id", sequenceName = "seq_approvalautoselectionconfig_id")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator="seq_approvalautoselectionconfig_id")
private Long id;
private Merchants company;
private Lob costCentre;
private Long createUser;
private String approvalStrategy;
private String uri;
private boolean active;
@OneToMany(fetch=FetchType.EAGER, mappedBy = "approvalAutoSelectionConfiguration",cascade = CascadeType.ALL,
targetEntity = ApprovalAutoSelectionCriteria.class)
private Set<ApprovalAutoSelectionCriteria> approvalCriteriaList;
public Long getId()
{
return id;
}
public void setId(Long id)
{
this.id = id;
}
@OneToOne(cascade = CascadeType.REFRESH, targetEntity = Merchants.class)
@JoinColumn(name = "merchant_id")
public entity.Merchants getCompany()
{
return company;
}
public void setCompany(entity.Merchants company)
{
this.company = company;
}
和
@Entity(name = "Merchants")
//@TableGenerator(name = "merchant_ids", table = "primary_keys", pkColumnName = "key", pkColumnValue = "merchants", valueColumnName = "value")
@NamedQueries({
@NamedQuery(name="Merchants.findAll", query="select o from Merchants as o"),
@NamedQuery(name="Merchants.findByName", query="select o from Merchants as o where o.company_name = ?1"),
@NamedQuery(name="Merchants.findByURI", query="select o from Merchants as o where o.url = ?1"),
@NamedQuery(name="Merchants.findById", query="select o from Merchants as o where o.merchant_id = ?1"),
@NamedQuery(name="Merchants.findAllClients", query="select o from Merchants as o where o.merchantType = ?1 and o.url <> '' and o.url <> '0'")
})
public class Merchants implements Serializable {
private Long merchant_id;
private String company_name;
private String trading_as;
private String store_name;
我正在尝试在 ApprovalAutoSelectionConfiguration 实体中编写一个命名查询,以便在加入商家实体时填充它。
例如:
@NamedQuery(name = "ApprovalAutoSelectionConfiguration.findByMerchantIdAndUri", query = "SELECT o FROM ApprovalAutoSelectionConfiguration o, Merchants m WHERE m.merchant_id = o.merchantid AND o.merchantid = ?1 AND o.uri = ?2")})
但是,我收到以下错误:
Error in named query: ApprovalAutoSelectionConfiguration.findByMerchantIdAndUri: org.hibernate.QueryException: could not resolve property: merchantid of: entity.approval.ApprovalAutoSelectionConfiguration [SELECT o FROM entity.approval.ApprovalAutoSelectionConfiguration o, entity.Merchants m WHERE m.merchant_id = o.merchantid AND o.merchantid = ?1 AND o.uri = ?2] at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:82) [hibernate-core-4.0.0.CR2.jar:4.0.0.CR2]
问题
请您告诉我我做错了什么。我认为问题是我的 @NamedQuery
语法错误或者我的@JoinColumn(name = "merchant_id")
是错误的。
它说无法解析 merchantid
。 ApprovalAutoSelectionConfiguration
实体没有merchantid
,但确实有private Merchants company;
,这是 Merchant
的连接实体。
谢谢
最佳答案
首先,在ApprovalAutoSelectionConfiguration
类中为商户指定外键类型:
@ManyToOne
@JoinColumn(name = "merchantid")
private Merchants company;
那么你必须使用HQL and JPQL写下您的查询:
@NamedQuery(name = "ApprovalAutoSelectionConfiguration.findByMerchantIdAndUri", query = "SELECT o FROM ApprovalAutoSelectionConfiguration o join o.company c WHERE o.merchantid = ?1 AND o.uri = ?2")})
了解如何在 HQL 中使用联接 here .
否则,例如对于您编写的查询,您可以尝试使用@NamedNativeQuery
:https://docs.oracle.com/javaee/7/api/javax/persistence/NamedNativeQuery.html .
关于java - Hibernate @NamedQuery 加入,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60668007/