hibernate many-to-many association and spring hibernatetemplate doesn't work - mysql

Question

I am using Spring HibernateTemplate, OpenSessionInViewFilter(actually I extended this class and created my own to switch to FLUSH.AUTO Mode) and Mysql for implementing hibernate many-to-many association. However when I save an object, corresponding many-to-many table's values are not inserted. Does anybody can help me? Thank you.
here is the mapping xml
<hibernate-mapping>
<class name="com.intelli.epub.domain.Content" table="CONTENT">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="title" type="java.lang.String">
<column name="TITLE" />
</property>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<many-to-one name="writer" class="com.intelli.epub.domain.User" fetch="join">
<column name="WRITER" />
</many-to-one>
<property name="createdDate" type="java.util.Date">
<column name="CREATEDDATE" />
</property>
<set name="menus" table="MENU_CONTENT" cascade="all">
<key column="CONTENT_ID"></key>
<many-to-many column="MENU_ID" class="com.intelli.epub.domain.Menu"/>
</set>
</class>
</hibernate-mapping>
another one:
<hibernate-mapping>
<class name="com.intelli.epub.domain.Menu" table="MENU">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<set name="contents" table="MENU_CONTENT" inverse="true">
<key column="MENU_ID"></key>
<many-to-many column="CONTENT_ID" class="com.intelli.epub.domain.Content"/>
</set>
</class>
and when saving like this:
Content content = new Content();
content.setCreatedDate(new Date());
content.setWriter(some user here);
content.setText("some text here");
Menu menu1 = new Menu("menu1");
Menu menu2 = new Menu("menu2");
Set<Menu> menus = new HashSet();
menus.add(menu1);
menus.add(menu2);
content.setMenus(menus);
contentDao.saveOrUpdate(content);
Now menu1 and menu2 would be saved in the MENU table, However nothing happens to MENU_CONTENT table; MENU_CONTENT table doesn't have a primary key field, instead MENU_ID and CONTENT_ID are primary key together. I don't know if it's the problem. Please help me. Thank you.

Answer 1

I found a solution. Instead of using Spring HibernateTemplate. I wrapped it in regular session and transaction like this.
Session session = contentDao.getHibernateTemplate().getSessionFactory().getCurrentSession();
transaction = session.beginTransaction();
Content content = new Content();
content.setCreatedDate(new Date());
content.setWriter(some user here);
content.setText("some text here");
Menu menu1 = new Menu("menu1");
Menu menu2 = new Menu("menu2");
Set<Menu> menus = new HashSet();
menus.add(menu1);
menus.add(menu2);
content.setMenus(menus);
session.save(content);
transaction.commit();
session.close();
And here is my session filter which inherited from OpenSessionInViewFilter
public class SessionFilter extends OpenSessionInViewFilter {
protected Session getSession(SessionFactory sessionFactory)
throws DataAccessResourceFailureException {
Session session = super.getSession(sessionFactory);
session.setFlushMode(FlushMode.AUTO);
return session;
}
}
Does anybody know a way to handle this without bothering to write session management myself?