Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package airport.services.chat; import airport.database.services.chat.Message; import airport.database.services.chat.ChatDao; import airport.database.services.users.User; import airport.services.statistics.ServiceStatistics; import java.sql.Timestamp; import java.util.Date; import java.util.List; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * * @author mcdoker */ @Service public class ServiceChatBasic implements ServiceChat { private final static Logger LOG = Logger.getLogger(ServiceChatBasic.class); @Autowired private ChatDao CHAT_DAO; @Autowired private ServiceStatistics serviceStatistics; @Override public List<Message> getMessageMiss(int number) { List<Message> resultMessages = CHAT_DAO.getMessageMiss(number); if (LOG.isInfoEnabled()) { LOG.info("get miss messages. Messages : " + resultMessages); } return resultMessages; }; @Override public void addMessage(User user, String text) { if (text == null || text.isEmpty()) { return; } serviceStatistics.incAmountSendMessage(user); CHAT_DAO.addMessage(user, text, new Timestamp(new Date().getTime())); if (LOG.isInfoEnabled()) { LOG.info("add message"); } } @Override public int getNumberLastMessage() { int numberLastMessage = CHAT_DAO.getLastNumberMessage(); if (LOG.isInfoEnabled()) { LOG.info("get number last message. Number last message : " + numberLastMessage); } return numberLastMessage; } }