academicyearserviceimpl.java.svn-base

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

/*
 * 创建日期 2005-5-16
 */
package biz.bluesky.pts.service.impl;

import java.util.List;

import biz.bluesky.pts.model.TAcademicyear;
import biz.bluesky.pts.service.IAcademicyearService;
import biz.bluesky.pts.service.dao.IAcademicyearDAO;

import biz.bluesky.pts.util.ErrorCode;

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


public class AcademicyearServiceImpl implements IAcademicyearService {
    
    private IAcademicyearDAO academicyearDAO; 
    
    public void setAcademicyearDAO(IAcademicyearDAO academicyearDAO) {
        this.academicyearDAO = academicyearDAO;
    }

    public IAcademicyearDAO getAcacemicyearDAO() {
        return this.academicyearDAO;
    }
    
    //根据学年编号查询学年
    public TAcademicyear findAcademicyear(int academicyearId) {
        TAcademicyear academicyear = null;        
        try {
            academicyear = academicyearDAO.findAcademicyear(academicyearId); 
        }
        
        catch(ObjectRetrievalFailureException excp) {
            
        }
        
        return academicyear; 
    }

    //查询所有的学年
    public List findAcademicyears() {
        return academicyearDAO.findAcademicyears();
    }

    //查询当前的学年
    public TAcademicyear findCurrentyear() {
        return academicyearDAO.findCurrentyear();
    }

    //新增学年
    public int saveAcademicyear(TAcademicyear academicyear) {
        if((academicyear == null)||(academicyear.getYear().equals(""))) {
            return ErrorCode.ERR_ACADEMICYEAR_EMPTY;
        }
        
        try {
            academicyearDAO.saveAcademicyear(academicyear);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_ACADEMICYEAR_REPEAT;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }

    //删除学年
    public int removeAcademicyear(int academicyearId) {
        try {
            academicyearDAO.removeAcademicyear(academicyearId);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_ACADEMICYEAR_NOT_FIND;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }

}