courseserviceimpl.java

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/*
 * CourseServiceImpl.java
 *
 * Created on 2006年5月20日, 下午5:13
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.service.impl;

import java.util.List;
import enova.service.*;
import enova.pojo.*;
import enova.dao.*;

/**
 *
 * @author vlinux
 */
public class CourseServiceImpl implements CourseService {
    
    private CourseDao courseDao;
    
    /** Creates a new instance of CourseServiceImpl */
    public CourseServiceImpl(CourseDao courseDao) {
        this.courseDao = courseDao;
    }
    
    /*通过课程ID获取课程*/
    public Course get(Integer id) throws StoreException{
        try{
            return courseDao.get(id);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*更新或者创建一个课程,如果课程名称、年份、学期、教师组合存在的话则抛出重复异常*/
    public void updateOrCreate(Course course) throws UniqueException, StoreException{
        try{
            courseDao.updateOrInsert(course);
        }catch(DataAccessException dae){
            throw new StoreException();
        }catch(RecordExistException dee){
            throw new UniqueException();
        }
    }
    
    /*通过课程ID删除课程*/
    public void delete(Integer id) throws NotExistException, StoreException{
        try{
            if( get(id)==null )
                throw new NotExistException();
            courseDao.delete(id);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过课程开设年份、学期获取课程*/
    public List getByYearAndTerm(Integer year,String term) throws StoreException{
        try{
            return courseDao.getByYearAndTerm(year,term);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过课程开设年份按照学期排序获取课程*/
    public List getByYear(Integer year) throws StoreException{
        try{
            return courseDao.getByYearSortTerm(year);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过课程开设年份、学期、教师ID获取课程*/
    public List getByYearAndTermAndTeacherId(Integer year,String term,Integer teacherId) throws StoreException{
        try{
            return courseDao.getByYearAndTermAndTeacherId(year,term,teacherId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    public List getByClassIdAndYearAndTerm(Integer classId,Integer year,String term)throws StoreException{
        try{
            return courseDao.getByClassIdAndYearAndTerm(classId,year,term);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
}