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我想QueryOver并选择返回私人财产的属性。我无法解释清楚,但这个例子会告诉你。NHibernate的QueryOver无法解析财产
映射:
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="IWA.Model" assembly="IWA.Model">
<class name="Test" lazy="false" table="Test">
<id name="Id" column="Id" >
<generator class="identity" />
</id>
<bag name="_images" access="field" table="Image" cascade="none">
<key column="IdTest" />
<one-to-many class="Image" />
</bag>
</class>
</hibernate-mapping>
类:
public class Test : IEntity<int>
{
private readonly IList<Image> _images;
public Test()
{
_images = new List<Image>();
}
public int Id { get; set; }
public Image Image => _images.FirstOrDefault();
}
QueryOver:
TestDto r = null;
Session.QueryOver<Test>()
.Where(x => x.Id == _id)
.Select(
Projections.Property<Test>(x => x.Id).WithAlias(() => r.Id),
Projections.Property<Test>(x => x.Image).WithAlias(() => r.Image)
) .TransformUsing(Transformers.AliasToBean<TestDto>())
.SingleOrDefault<TestDto>();
当我尝试此查询时得到“有限没有解决财产'。查询没有投影工作正常。
任何想法,我做错了什么?
你试过'Projections.SqlProjection'? – Najera
@Najera不,我从来没有听说过它。 –