Hibernate映射例外：为实体映射重复列 [英] Hibernate Mapping Exception : Repeated column in mapping for entity
问题描述
特定实体存在映射例外。
不知道问题出在哪里。
我从开始到结束检查了所有映射3次。
仍然收到映射异常。
发送给员工的电子邮件只映射一次。
但是仍然报告错误重复映射
错误是：
$ b $
code>引起：org.hibernate.MappingException：实体映射中的重复列：com.cluster.entity.Email列：EMPLOYEE_ID（应该使用insert =falseupdate =false映射）
在org.hibernate.mapping.PersistentClass.checkColumnDuplication（PersistentClass.java:680）
位于org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication（PersistentClass.java:702）
位于org.hibernate.mapping。 PersistentClass.checkColumnDuplication（PersistentClass.java:724）
在org.hibernate.mapping.PersistentClass.validate（PersistentClass.java:477）
在org.hibernate.mapping.RootClass.validate（RootClass.java：
at org.hibernate.cfg.Configuration.validate（Configuration.java:1287）
at org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:1729）
at org.hibernate.cfg.Configuration.buildSessionFactory .hibernate.cfg.Configuration.buildSessionFactory（Configuratio < clinit>（HibernateUtil.java:16）
... 1 more
n.java:1775）
at com.cluster.util.HibernateUtil。< clinit>
$ p $ package com.cluster.entity;
公共类电子邮件{
private int intEmailID;
私人字符串strEmailName;
//多对一
私人EmailType emailType;
//多对一
私人员工雇员;
public int getIntEmailID（）{
return intEmailID;
}
public void setIntEmailID（int intEmailID）{
this.intEmailID = intEmailID;
}
public String getStrEmailName（）{
return strEmailName;
}
public void setStrEmailName（String strEmailName）{
this.strEmailName = strEmailName;
}
public EmailType getEmailType（）{
return emailType;
}
public void setEmailType（EmailType emailType）{
this.emailType = emailType;
}
public Employee getEmployee（）{
return employee;
}
public void setEmployee（Employee employee）{
this.employee = employee;
}
}
email.hbm。 xml
<？xml version =1.0encoding =UTF-8？>
<！DOCTYPE hibernate-mapping PUBLIC
' - // Hibernate / Hibernate映射DTD 3.0 // EN'
'http://www.hibernate.org/dtd/hibernate-mapping -3.0.dtd'>
< hibernate-mapping package =com.cluster.entity>
< class name =Emailtable =EMAIL>
< id name =intEmailIDcolumn =EMAIL_ID>
< generator class =sequence>
< param name =sequence> EMAIL_ID_SEQ< / param>
< / generator>
< / id>
< property name =strEmailNamecolumn =EMAIL_NAME/>
< / class>
< / hibernate-mapping>
相关脚本
CREATE TABLE EMPLOYEE
（
EMPLOYEE_ID NUMBER NOT NULL，
FIRSTNAME VARCHAR2（20 BYTE）NOT NULL，
LASTNAME VARCHAR2（20 BYTE）NOT NULL，
DATE_OF_BIRTH VARCHAR2（20 BYTE）NOT NULL，
SALARY VARCHAR2（10 BYTE）NOT NULL，
DEPARTMENT_ID NUMBER NOT NULL
）;
CREATE TABLE EMAIL
（
EMAIL_ID NUMBER NOT NULL，
EMAIL_NAME VARCHAR2（40 BYTE）NOT NULL，
EMPLOYEE_ID NUMBER NOT NULL ，
EMAIL_TYPE_ID NUMBER NOT NULL
）;
CREATE TABLE EMAIL_TYPE
（
EMAIL_TYPE_ID NUMBER NOT NULL，
EMAIL_TYPE_NAME VARCHAR2（40 BYTE）NOT NULL
）;
ALTER TABLE EMPLOYEE ADD
（
CONSTRAINT PK_EMPLOYEE_ID
PRIMARY KEY（EMPLOYEE_ID）
）;
ALTER TABLE EMAIL_TYPE ADD
（
CONSTRAINT PK_EMAIL_TYPE_ID
PRIMARY KEY（EMAIL_TYPE_ID）
）;
ALTER TABLE EMAIL ADD
（
CONSTRAINT PK_EMAIL_ID
PRIMARY KEY（EMAIL_ID）
）;
ALTER TABLE EMAIL ADD
（
CONSTRAINT FK_EMAIL_EMPLOYEE_ID
FOREIGN KEY（EMPLOYEE_ID）
REFERENCES EMPLOYEE（EMPLOYEE_ID）
）;
ALTER TABLE EMAIL ADD
（
CONSTRAINT FK_EMAIL_EMAIL_TYPE_ID
FOREIGN KEY（EMAIL_TYPE_ID）
REFERENCES EMAIL_TYPE（EMAIL_TYPE_ID）
）;
发给员工的电子邮件只映射一次。
，但仍然报告错误重复映射
您是否将Employee中的集合设置为inverse？
< bag name =emailsinverse =true>
< key column =EMPLOYEE_IDnot-null =true>
...
< / bag>
There is a mapping exception for a particular entity. Cant figure out from where the problem is arising. I checked all the mappings 3 times from start to end. Still i am getting a Mapping Exception.
Email to employee is mapped only once. but still it is reporting the error repeated mapping
Error is:
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.cluster.entity.Email column: EMPLOYEE_ID (should be mapped with insert="false" update="false")
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:680)
at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:702)
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:724)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:477)
at org.hibernate.mapping.RootClass.validate(RootClass.java:268)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1287)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1729)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1775)
at com.cluster.util.HibernateUtil.<clinit>(HibernateUtil.java:16)
... 1 more
Email Pojo
package com.cluster.entity;
public class Email {
private int intEmailID;
private String strEmailName;
//many to one
private EmailType emailType;
//many to one
private Employee employee;
public int getIntEmailID() {
return intEmailID;
}
public void setIntEmailID(int intEmailID) {
this.intEmailID = intEmailID;
}
public String getStrEmailName() {
return strEmailName;
}
public void setStrEmailName(String strEmailName) {
this.strEmailName = strEmailName;
}
public EmailType getEmailType() {
return emailType;
}
public void setEmailType(EmailType emailType) {
this.emailType = emailType;
}
public Employee getEmployee() {
return employee;
}
public void setEmployee(Employee employee) {
this.employee = employee;
}
}
email.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
'-//Hibernate/Hibernate Mapping DTD 3.0//EN'
'http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd'>
<hibernate-mapping package="com.cluster.entity" >
<class name="Email" table="EMAIL">
<id name="intEmailID" column="EMAIL_ID">
<generator class="sequence">
<param name="sequence">EMAIL_ID_SEQ</param>
</generator>
</id>
<property name="strEmailName" column = "EMAIL_NAME"/>
<many-to-one name="employee" column="EMPLOYEE_ID" not-null = "true" class = "Employee"/>
<many-to-one name="emailType" column="EMAIL_TYPE_ID" not-null = "true" class = "EmailType"/>
</class>
</hibernate-mapping>
Related Script
CREATE TABLE EMPLOYEE
(
EMPLOYEE_ID NUMBER NOT NULL,
FIRSTNAME VARCHAR2(20 BYTE) NOT NULL,
LASTNAME VARCHAR2(20 BYTE) NOT NULL,
DATE_OF_BIRTH VARCHAR2(20 BYTE) NOT NULL,
SALARY VARCHAR2(10 BYTE) NOT NULL,
DEPARTMENT_ID NUMBER NOT NULL
);
CREATE TABLE EMAIL
(
EMAIL_ID NUMBER NOT NULL,
EMAIL_NAME VARCHAR2(40 BYTE) NOT NULL,
EMPLOYEE_ID NUMBER NOT NULL,
EMAIL_TYPE_ID NUMBER NOT NULL
);
CREATE TABLE EMAIL_TYPE
(
EMAIL_TYPE_ID NUMBER NOT NULL,
EMAIL_TYPE_NAME VARCHAR2(40 BYTE) NOT NULL
);
ALTER TABLE EMPLOYEE ADD
(
CONSTRAINT PK_EMPLOYEE_ID
PRIMARY KEY (EMPLOYEE_ID)
);
ALTER TABLE EMAIL_TYPE ADD
(
CONSTRAINT PK_EMAIL_TYPE_ID
PRIMARY KEY (EMAIL_TYPE_ID)
);
ALTER TABLE EMAIL ADD
(
CONSTRAINT PK_EMAIL_ID
PRIMARY KEY (EMAIL_ID)
);
ALTER TABLE EMAIL ADD
(
CONSTRAINT FK_EMAIL_EMPLOYEE_ID
FOREIGN KEY (EMPLOYEE_ID)
REFERENCES EMPLOYEE (EMPLOYEE_ID)
);
ALTER TABLE EMAIL ADD
(
CONSTRAINT FK_EMAIL_EMAIL_TYPE_ID
FOREIGN KEY (EMAIL_TYPE_ID)
REFERENCES EMAIL_TYPE (EMAIL_TYPE_ID)
);
Email to employee is mapped only once. but still it is reporting the error repeated mapping
have you set the collection in Employee as inverse?
<bag name="emails" inverse="true">
<key column="EMPLOYEE_ID" not-null="true">
...
</bag>
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