While using Hibernate 4 with
Spring I was down with following error if I tried to use HibernateTemplate or
HibernateDAOSupport.
|
Caused by: java.lang.IllegalArgumentException: Property
'sessionFactory' is required
at org.springframework.orm.hibernate3.HibernateAccessor.afterPropertiesSet(HibernateAccessor.java:316)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549)
... 12 more
|
This error is comes because of following part in
HiberanteTemplate class.
|
public void
afterPropertiesSet() {
if (getSessionFactory() == null) {
throw new
IllegalArgumentException("Property 'sessionFactory' is required");
}
}
|
It was easy to directly use
sessionFactory instead of HibernateTemplate or HibernateDAOSupport (and one
more rational for doing it was…both these classes are part of hibernte3 package
in Spring so who knows down the line they will discontinue the same). But still
I tried one tweak and that worked J. I
am using example of HiberanteTemplate but same can be done with
HibernateDAOSupport. So following are steps.
Ø Create
a class that will extend HibernateTemplate and have local variable for
SessionFactory and autowire the same with SessionFactory configured in spring
configuration file.
Ø Override
its afterProperties set method where you will set SessionFactory of parent
class (i.e. of org.springframework.orm.hibernate3.HibernateTemplate)
and then call same method of parent class so nothing is broken.
So following will be our
custom HibernateTemplate class.
|
package
com.techcielo.spring4.hibernate.template;
import
org.hibernate.SessionFactory;
import
org.springframework.beans.factory.annotation.Autowired;
import
org.springframework.orm.hibernate3.HibernateTemplate;
import
org.springframework.stereotype.Component;
@Component("hibernateTemplate")
public class
Hibernate4CustomTemplate extends HibernateTemplate{
@Autowired(required=true)
private SessionFactory sessionFactory;
public void
setSessionFactory(SessionFactory sessionFactory) {
System.out.println("Setting
SessionFactory");
this.sessionFactory = sessionFactory;
super.setSessionFactory(sessionFactory);
}
@Override
public void
afterPropertiesSet() {
System.out.println("Checking if
properties set..."+this.sessionFactory);
setSessionFactory(sessionFactory);
super.afterPropertiesSet();
}
}
|
One this configuration is
done you can configure this in your DAO and you are good. J
