teacherserviceimpl.java

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/*
 * TeacherServiceImpl.java
 *
 * Created on 2006年5月20日, 下午4:49
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.service.impl;

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

/**
 *
 * @author vlinux
 */
public class TeacherServiceImpl implements TeacherService {
    
    private TeacherDao teacherDao;
    
    /** Creates a new instance of TeacherServiceImpl */
    public TeacherServiceImpl(TeacherDao teacherDao) {
        this.teacherDao = teacherDao;
    }
    
    /*通过教师ID获取教师*/
    public Teacher get(Integer teacherId) throws StoreException{
        try{
            return teacherDao.get(teacherId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*更新或者创建教师,如果教师帐号名出现重复则抛出重复异常*/
    public void updateOrCreate(Teacher teacher) throws UniqueException, StoreException{
        try{
            teacherDao.updateOrInsert(teacher);
        }catch(DataAccessException dae){
            throw new StoreException();
        }catch(RecordExistException ree){
            throw new UniqueException();
        }
    }
    
    /*通过教师ID删除教师*/
    public void delete(Integer teacherId) throws NotExistException, StoreException{
        try{
            if( get(teacherId)==null )
                throw new NotExistException();
            teacherDao.delete(teacherId);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*教师登录验证,如果密码错误则抛出密码错误异常*/
    public Teacher loginVerify(String username,String password) throws PasswordErrorException, StoreException{
        try{
            Teacher teacher = teacherDao.loginVerify(username,password);
            if( teacher==null )
                throw new PasswordErrorException();
            return teacher;
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过姓名、登录帐号查询教师*/
    public List getByNameAndUsername(String name,String username) throws StoreException{
        try{
            return teacherDao.getByNameAndUsername(name,username);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过教师姓名查询教师，按照教师ID排序*/
    public List getByName(String name) throws StoreException{
        try{
            return teacherDao.getByNameSortId(name);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过教师帐号名获取教师*/
    public List getByUsername(String username) throws StoreException{
        try{
            return teacherDao.getByUsernameSortName(username);
        }catch(DataAccessException dae){
            throw new StoreException();
        }
    }
    
    /*通过帐号、原密码、新密码更改教师密码 如果密码错误则抛出ChangeErrorException*/
    public void changePassword(String username,String oldPassword,String newPassword)
            throws PasswordErrorException, StoreException{
        Teacher teacher = loginVerify(username,oldPassword);
        teacher.setPassword(newPassword);
        try{
            updateOrCreate(teacher);
        }catch(UniqueException ue){
            //
        }
        
    }
    
}