Problem with save method

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

I have 2 classes User and Login bind by a one-to-one bidirectionnal association.

I retrieve the login's informations and i write something like that :

Code:

Login l = new Login();
l.setId("toto");
l.setPwd("toto");
...
User user = new User();
user.setName("John Doe");
...
user.setLogin(l);
...
session.save(user);

The mapping file is as follow (excerpt):

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
   "-//Hibernate/Hibernate Mapping DTD//EN"
   "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
 
<hibernate-mapping>

    <class name="com.cfort.utilisateur.Login" table="login">
       <id name="identifiant" column="identifiant" type="string" length="20">
          <generator class="assigned"/>
       </id>    
       <property name="motPasse" type="string" length="20"/>
       <one-to-one name="internaute" class="com.cfort.utilisateur.Internaute"/>
    </class>
    
    <class name="com.cfort.utilisateur.Adresse" table="adresse">
       <id name="identifiant" column="identifiant" type="string" length="20">
          <generator class="assigned"/>
       </id>    
       <property name="rue" type="string" length="100"/>
       <property name="codePostal" type="string" length="5"/>
       <property name="ville" type="string" length="40"/>
       <property name="email" type="string" length="40"/>
       <property name="telephone" type="string" length="20"/>
       <property name="departement" type="string" length="30"/>
       <property name="region" type="string" length="30"/>
       <property name="fax" type="string" length="20"/>                                          
    </class>
    
   <class name="com.cfort.utilisateur.Internaute" table="internaute" discriminator-value="I">
      <id name="identifiant" column="identifiant" type="string" length="20">
          <generator class="assigned"/>
         </id>
         <discriminator column="type" type="character"/>
         <property name="nbPoints"/>
        <property name="nbPointsAcheter"/>
        <!-- Relation avec la classe Login : bidirectionnelle -->
        <one-to-one name="login" class="com.cfort.utilisateur.Login"/>   
        
        <!-- Relation avec la classe Adresse : monodirectionnelle -->
        <one-to-one name="adresse" class="com.cfort.utilisateur.Adresse"/>   
     </class>   
</hibernate-mapping>

It works but only the user's informations are saved in the DB.
Is it normal or do i have to save the login before.

I believed that when we save an object, hibernate automatically saves all the objects binded to it!!!!!!

Thanks

emmanuel · **Posted:** Thu Dec 04, 2003 1:39 pm

add cascade="save-update" to the one-to-one.
Be sure to set the *same* id in objects linked by a one-to-one.

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

I try cascade="save-update" on the user's side. When i run the program, an INSERT is done for the user and an UPDATE for Login. That not solves my problem because the login is not made persistent. What i want is to save the user and the login at same time.
Is it possible with hibernate or do i have to save explicitly the login before?

THANKS

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

I try cascade="save-update" on the user's side. When i run the program, an INSERT is done for the user and an UPDATE for Login. That not solves my problem because the login is not made persistent. What i want is to save the user and the login at same time.
Is it possible with hibernate or do i have to save explicitly the login before?

THANKS

gavin · **Posted:** Fri Dec 05, 2003 5:03 am

Set unsaved-value="any" for the Login class.

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

I try this but no effect. An UPDATE is still done for Login.
Is it possible when saving a user to have an INSERT for user and login too.

gavin · **Posted:** Fri Dec 05, 2003 5:18 am

You are mistaken. If you set unsaved-value="any" and cascade="save-update", Hibernate will insert a new Login.

Please use your debugger to resolve any further issues you have with this.

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

Here is my hbm.xml file :

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
   "-//Hibernate/Hibernate Mapping DTD//EN"
   "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
 
<hibernate-mapping> 

    <class name="com.cfort.utilisateur.Login" table="login" unsaved-value="any"> 
       <id name="identifiant" column="identifiant" type="string" length="20">
          <generator class="assigned"/>
       </id>    
       <property name="motPasse" type="string" length="20"/>
       <one-to-one name="internaute" class="com.cfort.utilisateur.Internaute" />
    </class>
    
      
   <class name="com.cfort.utilisateur.Internaute" table="internaute" discriminator-value="I">
      <id name="identifiant" column="identifiant" type="string" length="20">
          <generator class="assigned"/>
         </id>
         <discriminator column="type" type="character"/>
         <property name="nbPoints"/>
        <property name="nbPointsAcheter"/>
        <!-- Relation avec la classe Login : bidirectionnelle -->
        <one-to-one name="login" class="com.cfort.utilisateur.Login" [b]cascade="save-update" [/b]/>   
        
            </class>   
</hibernate-mapping>

I do as you say!!
what's wrong ?

Thanks

gavin · **Posted:** Fri Dec 05, 2003 5:37 am

Ummmm, lets see now:

unsaved-value is an attribute of the <id> element, not the <class> element.

Please read documentation and use the Hibernate DTD when proplems arise.

TIA

flam70 · **Joined:** Thu Oct 02, 2003 8:02 am **Posts:** 45

OK. It works well.
Thanks for your patience.