多對多返回無數據

Question

我在多對多的延遲加載中遇到問題。沒有例外，數據庫中有行，但延遲加載返回0行。你知道爲什麼嗎？

映射：

<class name="Riesitel" table="riesitel" lazy="true" > 
    <composite-id> 
     <key-many-to-one lazy="false" name="os_udaje"> 
     <column name="os_cislo" sql-type="integer" not-null="true" /> 
     </key-many-to-one> 

     <key-many-to-one lazy="false" name="projekt_etapa"> 
     <column name="rok" not-null="true" /> 
     <column name="id_projektu" not-null="true" /> 
     <column name="id_fakulty" not-null="true" /> 
     </key-many-to-one> 
    </composite-id> 

    <bag name="riesitel_rolas" inverse="true" cascade="none" table="riesitel_rola"> 
     <key> 
      <column name="os_cislo"/> 
      <column name="rok"/> 
      <column name="id_projektu"/> 
      <column name="id_fakulty"/> 
     <!-- <column name="id_rola" sql-type="Char"/> --> 
     </key> 
     <many-to-many class="Rola_v_projekte"> 
     <column name="id_rola"/> 
     </many-to-many> 
    </bag> 


    <class name="Rola_v_projekte" table="rola_v_projekte" lazy="true" > 

    <id name="id_rola"> 
     <column name="id_rola" sql-type="integer" not-null="true" /> 
     <generator class="sequence"> 
     <param name="sequence">id_rola_seq</param> 
     </generator> 
    </id> 

    <bag name="riesitel_rolas" inverse="true" cascade="none" table="riesitel_rola"> 
     <key> 
     <column name="id_rola" /> 
     </key> 
     <many-to-many class="Riesitel"> 
     <column name="os_cislo"/> 
     <column name="rok"/> 
     <column name="id_projektu"/> 
     <column name="id_fakulty"/> 
     </many-to-many> 
    </bag> 

DB模式：當我改變我的databese到非複合我認爲這是在NHibernate的錯誤..：

Answer 1

我不kwnow究竟爲什麼..但ID和更改映射都開始regurely工作：