deletesubjectofteacheraction.java.svn-base

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

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_3.8.4/xslt/JavaClass.xsl

package biz.bluesky.pts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import biz.bluesky.pts.model.*;
import biz.bluesky.pts.service.*;
import biz.bluesky.pts.util.ErrorCode;
/** 
 * MyEclipse Struts
 * Creation date: 04-14-2005
 * 
 * XDoclet definition:
 * @struts:action scope="request" validate="true"
 */
public class DeleteSubjectOfTeacherAction extends BaseAction {

	// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) throws Exception{
		ITeacherService teacherService =(ITeacherService)getServiceBean("TeacherService");
		ISubjectService subjectService =(ISubjectService)getServiceBean("SubjectService");
		int subjectId = Integer.parseInt(request.getParameter("subjectId"));
		int teacherId =Integer.parseInt(request.getParameter("teacherId"));
		int schoolId =Integer.parseInt(request.getParameter("schoolId"));
		TSubject subject = subjectService.findSubject(subjectId);
		
		int retcode = teacherService.removeSubjectFromTeacher(teacherId,subjectId);
		if(retcode==ErrorCode.ERR_UNDISCOVERED){
			request.setAttribute("success","<script language=javascript>function window.onload(){alert('Delete subject["+subject.getName()+"] of the teacher successful.');window.location.href='findSubjectByTeacher.do?teacherId="+teacherId+"&schoolId="+schoolId+"';}</script>");
			return mapping.findForward("success");
		}else{
			String msg = ErrorCode.getErrorMessage(retcode);
			if(msg==""){
				msg="The system encountered an internal error.";
			}
			request.setAttribute("error",msg);
			return mapping.findForward("error");
		}	
	}

}