import org.hibernate.Session;
import org.hibernate.SessionFactory;
+import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
/**
- * @author rkv
+ * Generic DAO implementation.
*
+ * @author <a href="mailto:roman.kozlov@opencascade.com">Roman Kozlov (RKV)</a>
+ *
+ * @param <T>
+ * Persistent object class
+ * @param <PK>
+ * Primary key class
*/
-public abstract class GenericDAOImpl<T, PK extends Serializable> implements
+public abstract class GenericDAOImpl<T, PK extends Serializable> extends HibernateDaoSupport implements
GenericDAO<T, PK> {
- private SessionFactory _sessionFactory;
+// /**
+// * Hibernate session factory.
+// */
+// private SessionFactory _sessionFactory;
- public PK create(T o) {
- return (PK) getSession().save(o);
+ /**
+ * Persist the newInstance object into database.
+ *
+ * @param newInstance
+ * new object as a transient instance
+ * @return new primary key for the created persistent object
+ */
+ @SuppressWarnings("unchecked")
+ public PK create(T newInstance) {
+ return (PK) getSession().save(newInstance);
}
+ /**
+ * Retrieve an object that was previously persisted to the database using the indicated id as primary key.
+ *
+ * @param id
+ * primary key of an object to read
+ * @return an object found by the given key
+ */
+ @SuppressWarnings("unchecked")
public T read(PK id) {
return (T) getSession().get(getType(), id);
}
- public void update(T o) {
- getSession().update(o);
- }
-
- public void delete(T o) {
- getSession().delete(o);
- }
-
- abstract protected Class<T> getType();
- /**
- * @return hibernate session
+ /** Save changes made to a persistent object.
+ * @param transientObject transient instance of the object to update
*/
- private Session getSession() {
- return getSessionFactory().getCurrentSession();
+ public void update(T transientObject) {
+ getSession().update(transientObject);
}
-
- /**
- * Get the sessionFactory.
- * @return the sessionFactory
+
+ /** Remove an object from persistent storage in the database.
+ * @param persistentObject a persistent object to delete from the database
*/
- public SessionFactory getSessionFactory() {
- return _sessionFactory;
+ public void delete(T persistentObject) {
+ getSession().delete(persistentObject);
}
/**
- * Set the sessionFactory.
- * @param sessionFactory the sessionFactory to set
+ * Get persistent object type.
+ * @return Persistent object class to be processed by this DAO
*/
- public void setSessionFactory(SessionFactory sessionFactory) {
- _sessionFactory = sessionFactory;
- }
+ abstract protected Class<T> getType();
+
+// /**
+// * Get the current hibernate session factory.
+// * @return hibernate session
+// */
+// private Session getSession() {
+// return getSessionFactory().getCurrentSession();
+// }
+//
+// /**
+// * Get the hibernate session factory.
+// * @return the hibernate session factory
+// */
+// public SessionFactory getSessionFactory() {
+// return _sessionFactory;
+// }
+//
+// /**
+// * Set the hibernate session factory.
+// * @param sessionFactory the hibernate session factory to set
+// */
+// public void setSessionFactory(SessionFactory sessionFactory) {
+// _sessionFactory = sessionFactory;
+// }
}
\ No newline at end of file
