conferencequeryaction.java

该源码包括了基于J2EE的数据持久层设计,设计中使用了DAO,Service,等模式,并在Struts下进行了测试．

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_3.9.210/xslt/JavaClass.xsl

package org.conference.action;

import java.io.Serializable;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;

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

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

import org.conference.form.ConferenceForm;
import org.conference.datapersistence.Bo.ConferenceVO;
import org.conference.datapersistence.Service.ServiceException;
import org.conference.datapersistence.Service.ServiceImple;
import org.conference.pagination.*;

/**
 * MyEclipse Struts Creation date: 05-16-2006
 * 
 * XDoclet definition:
 * 
 * @struts:action path="/conferenceQuery" name="conferenceQueryForm"
 *                scope="request" validate="true"
 */
public class ConferenceQueryAction extends Action implements Serializable{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private ServiceImple service = new ServiceImple();

	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		SimpleDateFormat formater = new SimpleDateFormat("yyyy/MM/dd");
		ConferenceForm conferenceQueryForm = (ConferenceForm) form;
		ConferenceVO vo = new ConferenceVO();
		String Datefrom;
		String Dateto;
		// TODO Auto-generated method stub
		vo.setTitle(conferenceQueryForm.getTitle());
//		System.out.println("\n dd:" + conferenceQueryForm.getDdfrom());
//		System.out.println("\n mm:" + conferenceQueryForm.getMmfrom());
//		System.out.println("\n yy:" + conferenceQueryForm.getYyfrom());
//		System.out.println("\n dd:" + conferenceQueryForm.getDdto());
//		System.out.println("\n mm:" + conferenceQueryForm.getMmto());
//		System.out.println("\n yy:" + conferenceQueryForm.getYyto());
		
		String operation = request.getParameter("operation");
		String pgi = request.getParameter("pgindex");
		boolean pageChange = (operation != null || pgi != null);

		RefreshablePagedListHolder holder = (RefreshablePagedListHolder) request
				.getSession().getAttribute("mySessionAttr");
		if (holder == null) {
			// System.out.println("Setting page list holder");
			holder = new RefreshablePagedListHolder();
			holder.setPageSize(5);
			holder.setSourceProvider(new ConferenceInfoProvider());
			request.getSession().setAttribute("mySessionAttr", holder);
		}
		//System.out.println("test test" + pageChange);

		if (!pageChange) {
			if (!conferenceQueryForm.getDdfrom().equals("dd") 
					&& !conferenceQueryForm.getMmfrom().equals("mm") 
					&& !conferenceQueryForm.getYyfrom().equals("yyyy") ) {
				Datefrom = conferenceQueryForm.getYyfrom() + "/"
						+ conferenceQueryForm.getMmfrom() + "/"
						+ conferenceQueryForm.getDdfrom();
			} else {
				Datefrom = "1992/1/1";
			}
			if (!conferenceQueryForm.getDdto().equals("dd") 
					&& !conferenceQueryForm.getMmto().equals("mm") 
					&& !conferenceQueryForm.getYyto().equals("yyyy") ) {
				Dateto = conferenceQueryForm.getYyto() + "/"
						+ conferenceQueryForm.getMmto() + "/"
						+ conferenceQueryForm.getDdto();
			} else {
				Dateto = "2007/1/1";
			}
			Date datesj=new Date();;
			try {
				datesj = formater.parse(Dateto);
			} catch (ParseException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			Date datexj=new Date();
			try {
				datexj = formater.parse(Datefrom);
			} catch (ParseException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			if (datesj.after(datexj)){			
			vo.setDatesj(Dateto);
			vo.setDatexj(Datefrom);
			vo.setAddress(conferenceQueryForm.getAddress());
			vo.setOrganizer(conferenceQueryForm.getOrganizer());
			
			holder.setFilter(vo);
			}
		  else
			{
				return mapping.findForward("dateerror"); 
			}
		}
		holder.refresh(false);
		//System.out.println("Source1: " + holder.getSource());
		//System.out.println(operation);
		if (operation != null) {
			if (operation.equals("first")) {
				holder.setPage(0);
			}
			else if (operation.equals("last")) {
				holder.setPage(holder.getPageCount() - 1);
			}
			else if (operation.equals("pre")) {
				holder.previousPage();
			}
			else if (operation.equals("next")) {
				holder.nextPage();
			}
		}
		int pageIndex;
		if (pgi != null) {
			pageIndex = Integer.parseInt(pgi);
			holder.setPage(pageIndex);
		}
		List resultList = holder.getPageList();
		request.setAttribute("conferenceList", resultList);
		return (mapping.findForward("conferenceResult"));	
		
	}

	private class ConferenceInfoProvider implements PagedListSourceProvider {
		public List loadList(Locale locale, Object vo) {
			List resultList = new ArrayList();
			try {
				System.out.println("tiaojian"+vo);
				resultList =service.FindConferencebyMultiple((ConferenceVO)vo);
			} catch (ServiceException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return resultList;
		}
	}
}