sourcecode/server/gateway-api/src/main/java/com/qxgmat/service/inline/CourseTeacherService.java

package com.qxgmat.service.inline;

import com.github.pagehelper.Page;
import com.nuliji.tools.AbstractService;
import com.nuliji.tools.exception.ParameterException;
import com.nuliji.tools.exception.SystemException;
import com.nuliji.tools.mybatis.Example;
import com.qxgmat.data.constants.enums.status.DirectionStatus;
import com.qxgmat.data.dao.CourseExperienceMapper;
import com.qxgmat.data.dao.CourseTeacherMapper;
import com.qxgmat.data.dao.entity.Course;
import com.qxgmat.data.dao.entity.CourseExperience;
import com.qxgmat.data.dao.entity.CourseTeacher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Collection;
import java.util.List;

@Service
public class CourseTeacherService extends AbstractService {
    private static final Logger logger = LoggerFactory.getLogger(CourseTeacherService.class);

    @Resource
    private CourseTeacherMapper courseTeacherMapper;

    public Page<CourseTeacher> listAdmin(int page, int size, Integer courseId){
        Example example = new Example(CourseTeacher.class);
        if(courseId != null){
            example.and(
                    example.createCriteria()
                    .andEqualTo("courseId", courseId)
            );
        }
        return select(courseTeacherMapper, example, page, size);
    }

    public List<CourseTeacher> allByCourse(Integer courseId){
        Example example = new Example(CourseTeacher.class);
        if(courseId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("courseId", courseId)
            );
        }
        return select(courseTeacherMapper, example);
    }

    public CourseTeacher add(CourseTeacher courseData){
        int result = insert(courseTeacherMapper, courseData);
        courseData = one(courseTeacherMapper, courseData.getId());
        if(courseData == null){
            throw new SystemException("教师添加失败");
        }
        return courseData;
    }

    public CourseTeacher edit(CourseTeacher courseData){
        CourseTeacher in = one(courseTeacherMapper, courseData.getId());
        if(in == null){
            throw new ParameterException("教师不存在");
        }
        int result = update(courseTeacherMapper, courseData);
        return courseData;
    }

    public boolean delete(Number id){
        CourseTeacher in = one(courseTeacherMapper, id);
        if(in == null){
            throw new ParameterException("教师不存在");
        }
        int result = delete(courseTeacherMapper, id);
        return result > 0;
    }

    public CourseTeacher get(Number id){
        CourseTeacher in = one(courseTeacherMapper, id);

        if(in == null){
            throw new ParameterException("教师不存在");
        }
        return in;
    }

    public Page<CourseTeacher> select(int page, int pageSize){
        return select(courseTeacherMapper, page, pageSize);
    }

    public Page<CourseTeacher> select(Integer[] ids){
        return page(()->select(courseTeacherMapper, ids), 1, ids.length);
    }

    public List<CourseTeacher> select(Collection ids){
        return select(courseTeacherMapper, ids);
    }

}