Hibernate version: 2.1

Mapping documents: Detay.hbm.xml , Kayit.hbm.xml

Code between sessionFactory.openSession() and session.close():
Kayit kay = new Kayit();
Detay det = new Detay();
Session s = sf.openSession();
Transaction t = s.beginTransaction();
det.setAd("Burak");
det.setSoyad("Ilter");

kay.setUsername("burak");
kay.setPassword("123456");

det.setKayit(kay);
System.out.println("det is set");
kay.setDetay(det);
Query q = s.createQuery("from Kayit kayit where kayit.username = :name");
q.setString("name", "canhuzmeli");
Iterator iter = q.iterate();
while(iter.hasNext() ){
Kayit cikti = (Kayit) iter.next();
System.out.println(cikti.getPassword());
}
s.save(det);
s.save(kay);
t.commit();
s.close();

Full stack trace of any exception that occurs:
Exception in thread "main" java.lang.StackOverflowError
Name and version of the database you are using:
MySql 4.0.18

I have a record
I get the output of "det is set" and the password of canhuzmeli, however the program flows when it tries to save the sessions.(I think so)

Can I ask why you have to save both?


saving det only is enough, depending on your mapping(not shown here), and kay will be persisted as well

I tried every possible savings (saving only one of them, both of them....) however I always get the same error.

<hibernate-mapping package = "havelsan.hiber">

<class name="Kayit" table="auth">

<id name="id" type="integer" unsaved-value="null" >
<column name="ID" sql-type="int" not-null="true" length="11"/>
<generator class="foreign">
<param name="property">detay</param>
</generator>
</id>

<property name="username">
<column name="USERNAME" sql-type="varchar" not-null="true" length="16"/>
</property>

<property name="password">
<column name="PASSWORD" sql-type="varchar" not-null="true" length="16"/>
</property>

<one-to-one name="detay" class="Detay" constrained="true"/>

</class>

</hibernate-mapping>




<hibernate-mapping package = "havelsan.hiber">

<class name="Detay" table="detaylar">

<id name="id" type="integer" unsaved-value="null" >
<column name="ID" sql-type="int" not-null="true" length="11"/>
<generator class="foreign">
<param name="property">kayit</param>
</generator>
</id>

<property name="ad">
<column name="AD" sql-type="varchar" not-null="false" length="16"/>
</property>

<property name="soyad">
<column name="SOYAD" sql-type="varchar" not-null="false" length="16"/>
</property>
<one-to-one name="kayit" class="Kayit" />
</class>

</hibernate-mapping>

Ok, this trying this and that usually takes a long time to work, and if it does in the end you geenrally have no idea why, if you haven't first figured out what results you expect, you can't work toward achieving it.
so start by deciding which object will cascade updates, which updates should be cascaded, and read the doc on how to map one-to-one, there are 2 options, and your mapping isn't one of them.
If you still have a problem feel free to post again

sorry for being so lazy. I found my answers in FAQ.
thanks for your concern.