NHibernate中的枚举类型
0
悬赏园豆：10
[已解决问题]
解决于 2014-03-26 10:37
单元测试时，提示无法确定 字段 SexType
failed: NHibernate.MappingException : Could not determine type for: NHibernate.Type.EnumStringType`1[[PersonRole.Basis.Enumeration.SexType, PersonRole.Basis]], NHibernate, for columns: NHibernate.Mapping.Column([SexType])
枚举定义如下：
public enum SexType
{
[EnumDescription("保密")]
Unknow = 2,
[EnumDescription("男性")]
Male = 1,
[EnumDescription("女性")]
Female=0
}
实体类定义如下：
public class t_UserInfo
｛
private SexType _sexType= SexType.Unknow;
public virtual SexType SexType
{
get { return this._sexType; }
set { this._sexType = value; }
}
｝
表t_UserInfo映射如下：
<property name="SexType" column="[SexType]" type="NHibernate.Type.EnumStringType`1[[PersonRole.Basis.Enumeration.SexType, PersonRole.Basis]], NHibernate" not-null="false" />
其实数据库表t_UserInfo中的列名确实是 SexType
当前使用的NHibernate版本为2.1，我想这个版本肯定会支持枚举了，可是哪里写错了？
最佳答案
0
<property name="SexType"> <column name="SexType" sql-type="int"/> </property>
最简单的数据库映射为int类型
收获园豆：10
嗯，按这种做法，测试通过。
请问有一张类别表t_Category，假设实体类如下：
public class t_SysDepartment
{
private Iesi.Collections.Generic.ISet<t_SysDepartment> childDepartments = null;
public virtual t_SysDepartment ParentDepartment { get; set; }
public virtual Iesi.Collections.Generic.ISet<t_SysDepartment> ChildDepartments
{
get
{
if (childDepartments == null)
childDepartments = new Iesi.Collections.Generic.HashedSet<t_SysDepartment>();
return childDepartments;
}
set { childDepartments = value; }
}
public virtual int AddDepartments(t_SysDepartment department)
{
ChildDepartments.Add(department);
department.ParentDepartment = this;
return ChildDepartments.Count;
}
}
XML映射如下：
<many-to-one name="ParentDepartment" column="[ParentId]" class="PersonRole.Data.DomainModel.Entities.t_SysDepartment,PersonRole.Data.DomainModel" foreign-key="PK_Department" cascade="save-update" />
<set name="ChildDepartments" table="t_SysDepartment" generic="true" inverse="true" lazy="true">
<key column="[ParentId]" />
<one-to-many class="PersonRole.Data.DomainModel.Entities.t_SysDepartment,PersonRole.Data.DomainModel" />
</set>
当查询某类的所有子类时，
list = s.CreateQuery("from t_SysDepartment t where t.ParentId=:parentId")
.SetInt32("parentId", parentId)
.List<t_SysDepartment>();
或
list = s.CreateCriteria(typeof(t_SysDepartment))
.CreateCriteria("ChildDepartments")
.Add(Restrictions.Eq("ParentId", parentId))
.List<t_SysDepartment>();
都是无法识别 字段ParentId
failed: NHibernate.QueryException : could not resolve property: ParentId of: PersonRole.Data.DomainModel.Entities.t_SysDepartment [from PersonRole.Data.DomainModel.Entities.t_SysDepartment t where t.ParentDepartment.ParentId=:parentId]
其实我是知道这样写会出错，因为实体类中本来就没有字段ParentId
但想查询一张表中自身下的所有子类，该如何写呢？
@king2003: http://www.jtben.com/document/1250 看看这篇文章