完成入住登记接口编写

src/main/java/cn/mafangui/hotel/service/CheckInService.java

@@ -0,0 +1,21 @@
+package cn.mafangui.hotel.service;
+
+import cn.mafangui.hotel.entity.CheckIn;
+
+import java.util.List;
+
+public interface CheckInService {
+
+    int insert(CheckIn checkIn);
+
+    int delete(int checkInId);
+
+    int update(CheckIn checkIn);
+
+    int updateByRoomNumber(String roomNumber);
+
+    CheckIn selectById(int checkInId);
+
+    List<CheckIn> selectAll();
+
+}

src/main/java/cn/mafangui/hotel/service/impl/CheckInServiceImpl.java

@@ -0,0 +1,46 @@
+package cn.mafangui.hotel.service.impl;
+
+import cn.mafangui.hotel.entity.CheckIn;
+import cn.mafangui.hotel.mapper.CheckInMapper;
+import cn.mafangui.hotel.service.CheckInService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class CheckInServiceImpl implements CheckInService {
+    @Autowired
+    private CheckInMapper checkInMapper;
+
+
+    @Override
+    public int insert(CheckIn checkIn) {
+        return checkInMapper.insert(checkIn);
+    }
+
+    @Override
+    public int delete(int checkInId) {
+        return checkInMapper.deleteByPrimaryKey(checkInId);
+    }
+
+    @Override
+    public int update(CheckIn checkIn) {
+        return checkInMapper.updateByPrimaryKeySelective(checkIn);
+    }
+
+    @Override
+    public int updateByRoomNumber(String roomNumber) {
+        return checkInMapper.updateByRoomNumber(roomNumber);
+    }
+
+    @Override
+    public CheckIn selectById(int checkInId) {
+        return checkInMapper.selectByPrimaryKey(checkInId);
+    }
+
+    @Override
+    public List<CheckIn> selectAll() {
+        return checkInMapper.selectAll();
+    }
+}