NHibernate遗留数据库多对一
我面临着NH和遗留数据库的映射关系问题 我们有两张桌子NHibernate遗留数据库多对一,nhibernate,nhibernate-mapping,Nhibernate,Nhibernate Mapping,我面临着NH和遗留数据库的映射关系问题 我们有两张桌子 Table1 [ Id primary Key (sql identity) Cod1, Cod2 ] 然后是第二张桌子 Table2 [ CompositeCode primary key (assigned), Cod1, Cod2 ] CompositeCode是Cod1+Cod2的计算字段,是表的键 我试图以这种方式映射表1和表2之间的只读多对一关系 <class name="Table
Table1 [
Id primary Key (sql identity)
Cod1,
Cod2 ]
然后是第二张桌子
Table2 [
CompositeCode primary key (assigned),
Cod1,
Cod2 ]
CompositeCode是Cod1+Cod2的计算字段,是表的键
我试图以这种方式映射表1和表2之间的只读多对一关系
<class name="Table2" >
<id name="Id" >
<generator class="identity" />
</id>
<many-to-one name="Table2"
formula="SELECT C.CompositeCode FROM Table2 C WHERE C.Cod1= Cod1 AND C.Cod2 = Cod2"/>
<property name="Cod1" />
<property name="Cod2" />
</class>
这是生成的SQL语句
SELECT TOP (100) this_.Id as Id1_37_0_,
this_.Cod1 as Cod1l3_37_0_,
this_.Cod2 as Cod24_37_0_,
SELECT this_.CompositeCode FROM Table2 C WHERE this_.Cod1 = C.OCd1 AND this_.Cod2 = C.COd2 as formula0_0_
FROM Table1 this_
怎么了
我也试着改变这个公式
formula="SELECT C.CompositeCode FROM Table2 C WHERE C.CompositeCode = Cod1 + Cod2"
但是没有运气
p.S.NH是3.1版执行子选择的公式语句必须用括号括起来
(选择…)
:
注意:我尝试过类似的场景,它正在工作。除非生成的代码不是
但是
formula="SELECT C.CompositeCode FROM Table2 C WHERE C.CompositeCode = Cod1 + Cod2"
formula="(SELECT C.CompositeCode FROM Table2 C WHERE C.CompositeCode = Cod1 + Cod2)"
...
,(SELECT this_.CompositeCode FROM Table2 C .. // this_.ComositeCode
...
,(SELECT C.CompositeCode FROM Table2 C .. // C.CompositeCode