package com.google.code.rsser.service.impl;import java.util.List;import org.apache.log4j.Logger;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.dao.DataAccessException;import org.springframework.security.GrantedAuthority;import org.springframework.security.GrantedAuthorityImpl;import org.springframework.security.context.SecurityContextHolder;import org.springframework.security.userdetails.UserDetails;import org.springframework.security.userdetails.UserDetailsService;import org.springframework.security.userdetails.UsernameNotFoundException;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import com.google.code.rsser.dao.UserDAO;import com.google.code.rsser.model.User;import com.google.code.rsser.service.UserService;@Transactional@Service("userService")public class UserServiceImpl implements UserService, UserDetailsService {	private Logger logger = Logger.getLogger(UserServiceImpl.class);		@Autowired	protected UserDAO userDAO;		public void save(User user) {		userDAO.save(user);	}		public User getCurrent() {		Object object = SecurityContextHolder.getContext().getAuthentication().getPrincipal();				if (logger.isDebugEnabled()) {			logger.debug("Getting current user [" + object + "]");		}				if (object instanceof User) {			return userDAO.get(((User) object).getId());		} else {			return null;		}	}	public UserDetails loadUserByUsername(String login) throws UsernameNotFoundException, DataAccessException {		if (logger.isDebugEnabled()) {			logger.debug("Trying to authenticate [login=" + login + "]");		}				User user = userDAO.getByLogin(login);		if (logger.isDebugEnabled()) {			logger.debug("Trying to authenticate " + user);		}				if (user == null) {			logger.info("User [login=" + login + "] does not exists");						throw new UsernameNotFoundException("User [" + login + "] not found");		}				user.setAuthorities(new GrantedAuthority[] { new GrantedAuthorityImpl("ROLE_USER") });		if (logger.isDebugEnabled()) {			logger.debug("Authorization result [login=" + login + "] roles " + user.getAuthorities());		}				return user;	}	public List<User> findAll() {		return userDAO.findAll();	}}