hibernatetest.java

回调函数的应用

package simon.tools.callback;

import java.util.List;

import net.sf.hibernate.*;
import org.springframework.orm.hibernate.HibernateTemplate;
import org.springframework.orm.hibernate.HibernateCallback;

public class HibernateTest {

  private SessionFactory sessionFactory;

  public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
  }

  public List loadProductsByCategory(final String category) {
    HibernateTemplate hibernateTemplate =
        new HibernateTemplate(this.sessionFactory);

    return (List) hibernateTemplate.execute(
        new HibernateCallback() {
      public Object doInHibernate(Session session) throws HibernateException {
        List result = session.find(
            "from test.Product product where product.category=?",
            category, Hibernate.STRING);
        return result;
      }
    }
    );
  }

  public static void main(String[] args) {
  }
}