major classes refactoring

src/main/java/com/commafeed/backend/dao/UserDAO.java

@@ -0,0 +1,31 @@
+package com.commafeed.backend.dao;
+
+import javax.ejb.Stateless;
+import javax.inject.Inject;
+import javax.persistence.NoResultException;
+import javax.persistence.TypedQuery;
+
+import com.commafeed.backend.model.User;
+import com.commafeed.backend.services.PasswordEncryptionService;
+
+@Stateless
+@SuppressWarnings("serial")
+public class UserDAO extends GenericDAO<User> {
+
+	@Inject
+	PasswordEncryptionService encryptionService;
+
+	public User findByName(String name) {
+		TypedQuery<User> query = em.createNamedQuery("User.byName", User.class);
+		query.setParameter("name", name.toLowerCase());
+
+		User user = null;
+		try {
+			user = query.getSingleResult();
+		} catch (NoResultException e) {
+			user = null;
+		}
+		return user;
+	}
+
+}