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    <p>in NH you can't join in a join. the only way is to make it a reference, which does basicly the same thing</p> <pre><code>&lt;class name="MyClass" table="tblTable1"&gt; &lt;id name="Table1Key"&gt; &lt;generator class="identity"/&gt; &lt;/id&gt; &lt;property name="..." /&gt; &lt;many-to-one table="tblTable2" lazy="false"&gt; &lt;key column="Table1Key" /&gt; &lt;property name="..." /&gt; &lt;/many-to-one&gt; &lt;/class&gt; &lt;class name="MyClass2" table="tblTable2"&gt; &lt;join table="tblTable3"&gt; &lt;key column="Table2Key" /&gt; &lt;property name="..." /&gt; &lt;/join&gt; &lt;/class&gt; class MyClass { public virtual MyClass2 MyClass2 { get; set; } public virtual int MyClass2_MyProperty { get { return MyClass2.MyProperty; } set { MyClass2.MyProperty = value; } } } class MyClass2 { public virtual int MyProperty { get; set; } } </code></pre> <p>Edit Option 2: if you dont want <code>MyClass2</code> Maybe you can tweak this:</p> <pre><code>&lt;class name="MyClass" table="tblTable2"&gt; &lt;-- take table2 as the main table &lt;id name="Table1Key"&gt; &lt;generator class="sequence"&gt; &lt;-- can be problem here, use sequence (directly) instead? &lt;param name="sequencename"&gt;table1_id_squence&lt;/param&gt; // not sure about "sequencename" &lt;/generator&gt; &lt;/id&gt; &lt;property name="..." /&gt; &lt;join table="tblTable1"&gt; &lt;key column="Table1Key" /&gt; &lt;property name="..." /&gt; &lt;/join&gt; &lt;join table="tblTable3"&gt; &lt;key column="Table2Key" /&gt; &lt;property name="..." /&gt; &lt;/join&gt; &lt;/class&gt; </code></pre>
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    1. COThank you i will try this. But must i have a seperate class for the joined table? i can't just map to properties from my existing class?
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    2. COI did not get it to work with the same class (i don't know if i fully understand your example) but now it works fine in a subclass and that is good enough. Thanks!
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