我有兩個父表和一個子表,複合鍵的下面提及:Hibernate的一對一的映射,有一個孩子和兩個父表
Employee:
employeeId1 (PK)
employeeId2 (PK)
employeeName
---some other columns go here----
Student:
studentId1 (PK)
studentId2 (PK)
studentName
---some other columns go here----
Address:
addressId (PK)
addressPersonId1 (PK & FK)
addressPersonId2 (PK & FK)
---some other columns go here----
員工和學生可以有相同的地址,這樣員工和學生可以參考地址中的相同記錄。
這些都不是實際的表,我有我的應用程序,但結構保持不變,我不能不惜任何代價改變表結構。
我想實現(員工,地址)和(學生,地址)之間的一對一關係。 由於PK列的數量和PK列的名稱不同,我無法創建關係。
將Address(addressPersonId1,addressPersonId2)中的列指定爲Primary和Forign鍵的方法是什麼?以及如何從Parent hbm文件中引用這些forign鍵。
**I have to establish mapping using HBM files but not hibernate or JPA annotations.**
**Is there any way to specify forign key column names in One to One tag in hbm file.**
在此先感謝您的任何建議和解決方案。
Employee.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.model.Employee" table="EMPLOYEE">
<composite-id name="employeePK" class="com.model.EmployeePK">
<key-property name="employeeId" column="EMPLOYEE_ID" />
<key-property name="employeeName" column="EMPLOYEE_NAME" />
</composite-id>
<property name="employeeStatus" type="string">
<column name="EMPLOYEE_STATUS" />
</property>
<one-to-one name="address" class="com.model.Address"
cascade="all">
</one-to-one>
</class>
</hibernate-mapping>
Student.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.model.Student" table="STUDENT">
<composite-id name="studentPK" class="com.model.StudentPK">
<key-property name="studentId" column="STUDENT_ID" />
<key-property name="studentName" column="STUDENT_NAME" />
</composite-id>
<property name="studentStatus" type="string">
<column name="STUDENT_STATUS" />
</property>
</class>
</hibernate-mapping>
Address.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.model.Address" table="ADDRESS">
<composite-id name="addressPK" class="com.model.AddressPK">
<key-property name="addressId" column="ADDRESS_ID" />
<key-property name="addressPersonId" column="ADDRESS_PERSON_ID" />
<key-property name="addressPersonName" column="ADDRESS_PERSON_NAME" />
</composite-id>
<property name="addressStatus" type="string">
<column name="ADDRESS_STATUS" />
</property>
</class>
</hibernate-mapping>
對於一對多的情況,我們可以在父hbm文件中指定映射列名爲** **有沒有什麼辦法可以在One to One關係中指定它。 –
' ''是你的外鍵在其他表 –
Angga
讓我試試看...... –