modelmanagerwebutil.java.svn-base

来自「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」· SVN-BASE 代码 · 共 40 行

package com.nsi.control.web.util;

import javax.servlet.http.HttpServletRequest;

import com.nsi.constants.AppConstants;
import com.nsi.control.web.ModelManager;

public final class ModelManagerWebUtil
{
	/**
	 * private constructor of ModelManagerWebUtil, prevent instantiation
	 */
	private ModelManagerWebUtil()
	{
	}
	private static class ModelManagerWebUtilHolder
	{
		static final ModelManagerWebUtil mmWebUtil = new ModelManagerWebUtil();
	}
	/**
	 * @return an instance of ModelManagerWebUtil
	 */
	public static ModelManagerWebUtil getInstance()
	{
		return ModelManagerWebUtilHolder.mmWebUtil;
	}
	public ModelManager getModelManager( HttpServletRequest request )
	{
		Object mmobj = request.getSession().getAttribute(AppConstants.ModelManagerKey);
		if( mmobj != null )
		{
			return (ModelManager)mmobj;
		}
		else
		{
			return null;
		}
	}
}