I have two tables: option_position and stock_trading. The relation is one option_position contains one stock_trading. Here is the def:

Table option_position:
id -- primary key, auto increment

Table stock_trading:
id -- primary key, auto increment
option_position_id -- foreign key to option_position table

Here is the OptionPosition.hbm.xml:

<hibernate-mapping default-lazy="false">

<class name="com.ameraust.investor.option.strategy.OptionPosition" table="option_position">
<id name="id" type="int" column="id">
<generator class="increment"/>
</id>

<one-to-one name="initialStockTrading" class="com.ameraust.investor.object.StockTrading" property-ref="optionPosition" constrained="true" cascade="all" />
....

Here is the StockTrading.bhm.xml:

<hibernate-mapping default-lazy="false">

<class name="com.ameraust.investor.object.StockTrading" table="stock_trading">

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

<many-to-one name="optionPosition" class="com.ameraust.investor.option.strategy.OptionPosition" column="option_position_id" unique="true"/>
...


When calling session.save(optionPosition), one row created in each table. But option_position_id = null in stock_trading table.

What's wrong here?

Thanks,

Could you clarify a bit more what is going on? Some program code?

The optionposition call should explicitly set its value in stock_trading. You could look at Item, Bid example in Java Persistance with hibernate example or

https://glassfish.dev.java.net/javaee5/ ... ample.html

Regards,
Nagendra