webmodelutil.java.svn-base

一个timesheet程序,用来统计开发人员的度量衡web在线程序.用于软件行业

package com.nsi.control.web.util;

import javax.servlet.http.HttpSession;

import com.nsi.components.proactivity.ProActivityModel;
import com.nsi.components.proactivity.ProActivityWebImpl;
import com.nsi.components.projassign.ProAssignModel;
import com.nsi.components.projassign.ProAssignWebImpl;
import com.nsi.components.project.ProjectModel;
import com.nsi.components.project.ProjectWebImpl;
import com.nsi.components.resource.ResourceModel;
import com.nsi.components.resource.ResourceWebImpl;
import com.nsi.components.timesheet.TimeSheetModel;
import com.nsi.components.timesheet.TimeSheetWebImpl;
import com.nsi.constants.AppConstants;
import com.nsi.control.web.ModelManager;

public final class WebModelUtil
{
	/**
	 * private constructor of WebModelUtil, prevent instantiation
	 */
	private WebModelUtil()
	{
	}
	private static class WebModelUtilHolder
	{
		static final WebModelUtil webModelUtil = new WebModelUtil();
	}
	/**
	 * @return an instance of WebModelUtil
	 */
	public static WebModelUtil getInstance()
	{
		return WebModelUtilHolder.webModelUtil;
	}
	public TimeSheetModel getTimeSheetModel( ModelManager mm )
	{
		HttpSession session = mm.getSession();
		TimeSheetModel timesheet = (TimeSheetModel)session.getAttribute(AppConstants.TimeSheetModelKey);
		if(timesheet == null)
		{
			timesheet = new TimeSheetWebImpl(mm);
			session.setAttribute(AppConstants.TimeSheetModelKey, timesheet);
		}
		return timesheet;
	}
	public ResourceModel getResourcemodel( ModelManager mm )
	{
		HttpSession session = mm.getSession();
		ResourceModel resource = (ResourceModel)session.getAttribute(AppConstants.ResourceModelKey);
		if(resource == null)
		{
			resource = new ResourceWebImpl(mm);
			session.setAttribute(AppConstants.ResourceModelKey, resource);
		}
		return resource;
	}
	public ProjectModel getProjectModel(ModelManager mm)
	{
		HttpSession session = mm.getSession();
		ProjectModel project = (ProjectModel)session.getAttribute(AppConstants.ProjectModelKey);
		if(project == null)
		{
			project = new ProjectWebImpl(mm);
			session.setAttribute(AppConstants.ProjectModelKey, project);
		}
		return project;
	}
	public ProActivityModel getProActivityModel(ModelManager mm)
	{
		HttpSession session = mm.getSession();
		ProActivityModel proactivity = (ProActivityModel)session.getAttribute(AppConstants.ProActivityModelKey);
		if(proactivity == null)
		{
			proactivity = new ProActivityWebImpl(mm);
			session.setAttribute(AppConstants.ProActivityModelKey, proactivity);
		}
		return proactivity;
	}
	public ProAssignModel getProAssignModel(ModelManager mm)
	{
		HttpSession session = mm.getSession();
		ProAssignModel proassign = (ProAssignModel)session.getAttribute(AppConstants.ProAssignModelKey);
		if(proassign == null)
		{
			proassign = new ProAssignWebImpl(mm);
			session.setAttribute(AppConstants.ProAssignModelKey, proassign);
		}
		return proassign;
	}
}