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[英]The element 'class' in namespace 'urn:nhibernate-mapping-2.2' has invalid child element 'property'
[英]error “The element 'class' in has invalid child element 'set' in namespace ” when mapping hbm file
H想在我的應用程序中使用繼承,但是當我運行時,我的hbm映射文件有錯誤。 我的代碼在這里
public class StudentDao
{
public virtual int Id { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual StudentDegreeType Degree { get; set; }
public virtual string Field { get; set; }
public virtual IEnumerable<StudentCourse> StudentCourses { get; set; }
我的映射文件是:
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping assembly="Tosan.Sevrice.DataAccess" namespace="Tosan.Sevrice.DataAccess.Dao" xmlns="urn:nhibernate-mapping-2.2">
<class name="StudentDao" table="STUDENTT" lazy="true" >
<id name="Id" column="ID" >
<generator class="increment"> </generator>
</id>
<discriminator column="Degree"/>
<property name="FirstName" column="FIRSTNAME" />
<property name="LastName" column="LASTNAME" />
<!--<property name="Degree" column="DEGREE" />-->
<property name="Field" column="FIELD" />
<subclass name="MasterStudent" discriminator-value="1">
<property name="َArticle" />
</subclass>
<subclass name="BachelorStudent" discriminator-value="2">
</subclass>
<set name="StudentCourses" table="StudentCourse" inverse="true" cascade="all,delete-orphan">
<key column="ID"/>
<one-to-many class="StudentCourse"/>
</set>
</class>
</hibernate-mapping>
我在文件映射“設置”中使用了關系標簽
我的孩子班是:
public class BachelorStudent : StudentDao
{
}
}
下一個孩子班:
public class MasterStudent : StudentDao
{
public virtual bool Article { get; set; }
}
}
在我運行此錯誤波紋管出來后:
“名稱空間'urn:nhibernate-mapping-2.2'中的元素'class'在名稱空間'urn:nhibernate-mapping-2.2'中具有無效的子元素'set'。可能的元素列表:'子類,加載器,sql-insert ,命名空間“ urn:nhibernate-mapping-2.2”中的sql-update,sql-delete,過濾器,結果集,查詢,sql-query”。
我該怎么辦??
set元素需要在子類元素之前定義。 即:
<set name="StudentCourses" table="StudentCourse" inverse="true" cascade="all,delete-orphan">
<key column="ID"/>
<one-to-many class="StudentCourse"/>
</set>
<subclass name="MasterStudent" discriminator-value="1">
<property name="َArticle" />
</subclass>
<subclass name="BachelorStudent" discriminator-value="2">
</subclass>
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