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我在理解一些代码时遇到了一些麻烦。我有2类公司和公司位置。映射为:NHibernate Criteria查询楼
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="Core.DataTransfer.CompanyLocation,Core.DataTransfer" table="`CompanyLocation`" lazy="true">
<id name="CompanyLocationId" column="`CompanyLocationID`" type="int">
<generator class="native" />
</id>
<many-to-one name="Company" cascade="none" column="`CompanyID`" not-null="true" />
</class>
</hibernate-mapping>
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="Core.DataTransfer.Company,Core.DataTransfer" table="`Company`" lazy="true">
<id name="CompanyId" column="`CompanyID`" type="int">
<generator class="native" />
</id>
<property type="string" not-null="true" length="100" name="CompanyName" column="`CompanyName`" />
<bag name="CompanyLocations" inverse="true" lazy="true" cascade="all">
<key column="`CompanyID`" />
<one-to-many class="Core.DataTransfer.CompanyLocation,Core.DataTransfer" />
</bag>
</class>
</hibernate-mapping>
我试图用一个标准查询,如下查询:
public IList<CompanyLocation> GetCompanyLocations(string sortExpression)
{
ICriteria criteria = _session.CreateCriteria(typeof(CompanyLocation));
if (!string.IsNullOrEmpty(sortExpression))
{
Sort sort = new Sort(sortExpression);
if (!string.IsNullOrEmpty(sort.AssociationPath))
{
criteria.CreateCriteria(sort.AssociationPath).AddOrder(new Order(sort.SortColumn, sort.IsAscending));
}
// if (!string.IsNullOrEmpty(sort.AssociationPath))
// {
// criteria.CreateCriteria(sort.AssociationPath);
// }
// criteria.AddOrder(new Order(sort.SortColumn, sort.IsAscending));
}
return criteria.List<CompanyLocation>();
}
当我调用该方法,并传递“Company.CompanyName DESC”排序类的的SortExpression将解析它,以便: AssociationPath =“公司” SortColumn =“公司名称” IsAscending =假
IF块在没有被注释掉工程的方法。如果我更改为被注释掉失败与一个: 无法解析属性:公司
我无法理解为什么。