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 Post subject: NHibernate generates too many statements
PostPosted: Thu May 03, 2012 8:36 am 
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Joined: Fri Mar 23, 2012 4:53 pm
Posts: 2
Hi,
I have a table InventoryObject with two foreign-keys to Device and Room.
Now I want to select all InventoryObjects with their Room and Device.

My T-SQL query would be: select * from InventoryObject i left join device d on i.deviceid=d.deviceid left join room r on i.roomid=r.roomid;

But NHibernate generates a Select statement for the Inventories and than one statement per Room and Device.
How can i force NHibernate to generate only one statement?

I use Nhibernate 3.2 and Linq to query the DB.
My command to get all objects is: Session.Query<T>().ToList()

My InventoryObject Mapping-File:
Code:
  <class name="InventoryObject" table="InventoryObject" lazy="true" >
    <id name="InventoryID" column="InventoryID" type="long">
      <generator class="identity" />
    </id>
    <many-to-one insert="true" column="DeviceID" update="true" lazy="false" name="Device" not-null="true" class="Device">
    </many-to-one>
   
    <many-to-one insert="true" column="RoomID" update="true" lazy="false" name="Room" not-null="true" class="Room" >
    </many-to-one>

   
    <bag name="Archives" inverse="true" cascade="none" lazy="true" fetch="join">
      <key column="InventoryID" />
      <one-to-many class="Archive" />
    </bag>
    <bag name="Tickets" inverse="true" cascade="none" lazy="true">
      <key column="InventoryID" />
      <one-to-many class="Ticket"  />
    </bag>
  </class>


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