package com.neusoft.sso;

import java.util.Set;

import javax.servlet.ServletContext;

/**************************************************
 * NAME : ContextManager.java
 * HISTORY
 * 2007-08-15 shanc  創(chuàng)建文件
 * 注意：這個(gè)類是個(gè)包訪問(wèn)權(quán)限的類，使用Sso組件的程序員，不建議了解該類的具體結(jié)構(gòu)
 *************************************************/
class ContextManager { 
	static boolean hasUser(ServletContext context,String paraName){	
		//獲取其他所有平臺(tái)的context，并遍歷其中的Set
		String[] otherNames = Global.getOthersNames();
		for(int i = 0;i<otherNames.length;i++){
			String otherName = otherNames[i];
			ServletContext otherC = context.getContext("/"+otherName);
			Set ssoUserSet = (Set)otherC.getAttribute(Global.SET_NAME);
			if(ssoUserSet.contains(paraName))//已在別的應(yīng)用中登錄
				return true;
		}
		return false;
	}
	
	static void clearContext(ServletContext context,String paraName){
		//獲取自身平臺(tái)的Set,并清除Set中的paraName
		Set selfUserSet = (Set)context.getAttribute(Global.SET_NAME);
		selfUserSet.remove(paraName);
		//獲取其他所有平臺(tái)的context，并清除Set中的paraName
		String[] otherNames = Global.getOthersNames();
		for(int i = 0;i<otherNames.length;i++){
			String otherName = otherNames[i];
			ServletContext otherC = context.getContext("/"+otherName);
			Set ssoUserSet = (Set)otherC.getAttribute(Global.SET_NAME);
			ssoUserSet.remove(paraName);
		}
	}
}