Hello,

The case looks like this: two classes with mappings:

<class name="Class1" table="Class1">

<id name="Id" type="int">
<column name="Id" />
<generator class="identity"/>
</id>

<!-- One-to-many association with Class2 -->

</class>

<class name="Class2" table="Class2">

<!-- One-to-one association with Class3 -->

</class>

<class name="Class3" table="Class3">

<!-- ... -->

</class>

There is an int property in Class3 which value needs to be equal to the id of Class1. Can it be done with only one operation - save of Class1?
(The One-to-one association of Class2 with Class3 is just example, could be different.)