studentserviceimpl.java

菲律宾的一个大学的图书管理系统 spring+hibernate+velocity

/*
 * 创建日期 2005-5-17
 */
package biz.bluesky.pts.service.impl;

import java.util.*;

import org.springframework.dao.DataAccessException;
import org.springframework.orm.ObjectRetrievalFailureException;

import biz.bluesky.pts.model.TRemark;
import biz.bluesky.pts.model.TStudent;
import biz.bluesky.pts.model.TTeacherClass;
import biz.bluesky.pts.service.IStudentService;
import biz.bluesky.pts.service.dao.IStudentDAO;
import biz.bluesky.pts.util.ErrorCode;

public class StudentServiceImpl implements IStudentService {
	private IStudentDAO  studentDAO;
	
	public IStudentDAO getStudentDAO() {
		return this.studentDAO;
	}
	
	public void setStudentDAO(IStudentDAO studentDAO) {
		this.studentDAO = studentDAO;
	}


	//新增学生
	public int saveStudent(TStudent student) {
		if(student == null) {
			return ErrorCode.ERR_REMARK_EMPTY;//需改
		} try {
			studentDAO.saveStudent(student);
			} catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_REMARK_REPEAT;//需改
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
		
		return ErrorCode.ERR_UNDISCOVERED;
	}
	
	//删除学生
	public int removeStudent(int studentId) {
		try {
			studentDAO.removeStudent(studentId);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_SCHOOL_NOT_FIND;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
	}
	
	//根据学生编号查询学生
	public TStudent findStudent(int studentId) {
		return studentDAO.findStudent(studentId);
	}
	
	//根据学生姓名查询学生
	public List findStudents(String name){
		return studentDAO.findStudents(name);
	}

	//根据班级编号查询学生
	public List findStudents(int classId) {
		return studentDAO.findStudents(classId);
	} 

}