classserviceimpl.java

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/*
 * ClassServiceImpl.java
 *
 * Created on 2006年5月19日, 下午8:32
 *
 * 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 ClassServiceImpl implements ClassService {
    
    private ClassDao classDao;
    
    /** Creates a new instance of ClassServiceImpl */
    public ClassServiceImpl(ClassDao classDao) {
        this.classDao = classDao;
    }
    
    /*通过班级ID获取班级*/
    public enova.pojo.Class get(Integer classId) throws StoreException{
        try{
            return classDao.get(classId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*更新或创建一个班级,如果班级名称和所在专业的组合已经存在，则抛出存在异常*/
    public void updateOrCreate(enova.pojo.Class c) throws UniqueException, StoreException{
        try{
            classDao.updateOrInsert(c);
        }catch(DataAccessException dae){
            throw new StoreException();
        }catch(RecordExistException ree){
            throw new UniqueException();
        }
    }
    
    /*通过班级ID删除班级*/
    public void delete(Integer classId) throws NotExistException, StoreException{
        try{
            if( get(classId)==null )
                throw new NotExistException();
            classDao.delete(classId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过专业ID、登记年份获取班级*/
    public List getBySpecialIdAndEnrollYear(Integer specialId,Integer enrollYear) throws StoreException{
        try{
            return classDao.getBySpecialIdAndEnrollYear(specialId,enrollYear);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过专业ID获取班级，并且按照班级登记年份排序*/
    public List getBySpecialId(Integer specialId) throws StoreException{
        try{
            return classDao.getBySpecialIdSortEnrollYear(specialId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
}