Question

I have a class to map a table for using hibernate. There are some variable I want to ignore for mapping to use as constant. And I want to load constant value from properties so I code it like this:

@Transient
@Value("${something.value}")
private int MY_VALUE;

But, the value of MY_VALUE is always set to 0. Can’t I use @Transient annotation with @Value annotation? Or I missed something else?

Answer 1

You use @Value to specify a property value to load when Spring creates the bean.

However, if you are using Hibernate to load data from a database, Spring is not instantiating these classes for you. So your @Value annotation has no effect.

I would suggest injecting the @Value into the DAO that loads these entities from Hibernate, something like

public class FooDao {
    @Value("...")
    private int yourConfiguredValue;

    public getFoo() {
        Foo foo = sessionFactory.getCurrentSession().get(...);
        foo.setYourValue(yourConfiguredValue);
        return foo;
    }
}