text: package com.gdp.mooc.biz;
  
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  
  import com.gdp.mooc.entity.Course;
  
  public interface CourseBiz {
  	public List<Course> selectAllCourse();
  	Course selectByPrimaryKey(int id);
      int updateByPrimaryKeySelective(Course record);
      List<Course> coursesearch(String search);
      List<Course> freeCourse();
      List<Course> vipCourse();
      int deleteByPrimaryKey(String id);
      int savecourse(HttpServletRequest req);
  }
  