select.java

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/*
 * Select.java
 *
 * Created on 2006年5月31日, 下午10:00
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.web.struts.action;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import enova.service.*;
import enova.pojo.*;
import enova.util.Const;
/**
 *
 * @author vlinux
 */
public class Select extends org.apache.struts.actions.DispatchAction {
            
    public ActionForward department(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            DepartmentService ds = (DepartmentService)ServiceFactory.makeService("DepartmentService");
            request.setAttribute("departments",ds.getAll());
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.DEPARTMENT);
    }
    
    
    public ActionForward special(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            String departmentId = request.getParameter("departmentId");
            if( departmentId==null || departmentId.length()<=0 ){
                DepartmentService ds = (DepartmentService)ServiceFactory.makeService("DepartmentService");
                request.setAttribute("departments",ds.getAll());
            }else{
                Integer deptId = new Integer(Integer.parseInt(departmentId));
                SpecialService ss = (SpecialService)ServiceFactory.makeService("SpecialService");
                request.setAttribute("specials",ss.getByDepartmentId(deptId));
            }
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.SPECIAL);
    }
    
    
    public ActionForward teacher(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            String username = request.getParameter("username");
            String name = request.getParameter("name");
            TeacherService ts = (TeacherService)ServiceFactory.makeService("TeacherService");
            java.util.List list = null;
            if( (username!=null&&username.length()>0) && (name!=null&&name.length()>0))
                list = ts.getByNameAndUsername(name,username);
            else if(username!=null && username.length()>0)
                list = ts.getByUsername(username);
            else
                list = ts.getByName(name);
            request.setAttribute("teachers",list);
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.TEACHER);
    }
    
    
    public ActionForward classx(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            String departmentId = request.getParameter("departmentId");
            String specialId = request.getParameter("specialId");
            if( departmentId==null || departmentId.length()<=0 ){
                DepartmentService ds = (DepartmentService)ServiceFactory.makeService("DepartmentService");
                request.setAttribute("departments",ds.getAll());
            }else if( specialId==null || specialId.length()<=0 ){
                Integer deptId = new Integer(Integer.parseInt(departmentId));
                SpecialService ss = (SpecialService)ServiceFactory.makeService("SpecialService");
                request.setAttribute("specials",ss.getByDepartmentId(deptId));
            }else{
                Integer spelId = new Integer(Integer.parseInt(specialId));
                ClassService cs = (ClassService)ServiceFactory.makeService("ClassService");
                request.setAttribute("classes",cs.getBySpecialId(spelId));
            }
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.CLASS);
    }
    
    
    
    public ActionForward course(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            Integer year;
            try{
                year = new Integer(Integer.parseInt(request.getParameter("year")));
            }catch(Exception e){
                year = null;
            }
            String term = request.getParameter("term");
            CourseService cs = (CourseService)ServiceFactory.makeService("CourseService");
            java.util.List list = null;
            if( year!=null && term!=null && term.length()>0 )
                list = cs.getByYearAndTerm(year,term);
            else if( year!=null )
                list = cs.getByYear(year);
            else{
                list = cs.getByYear(null);
            }
            request.setAttribute("courses",list);
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.COURSE);
    }
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
}