子类和单个字段的java hibernate映射
我有这样的等级制度:
class A
{
private String a1;
private Class B a2;
// getter & setter
}
class B
{
private String b1;
private String b2;
// getter & setter
}
class C extends class A
{
private String c1;
// getter and setter for c1;
}
我需要使用hibernate将C映射到数据库中的单个表。我试试这个:
<class name="com.C"
table="myTable" catalog="myCatalog"
polymorphism="implicit">
<property name="a1" type="string">
<column name="column1" length="40" not-null="true" />
</property>
<property name="a2" type="????">
?? B should map to column2 and column3
</property>
<property name="c1" type="string">
<column name="column4" length="40" not-null="true" />
</property>
</class>
如何映射b类的字段b
谢谢
# 1 楼答案
Hi使用组件标记找到它: