Ptidej-v5.2-master/Ptidej Reporting Tests/src/net/sf/jasperreports/j2ee/servlets/BaseHttpServlet.java
/*
 * ============================================================================
 * GNU Lesser General Public License
 * ============================================================================
 *
 * JasperReports - Free Java report-generating library.
 * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 * 
 * JasperSoft Corporation
 * 303 Second Street, Suite 450 North
 * San Francisco, CA 94107
 * http://www.jaspersoft.com
 */
package net.sf.jasperreports.j2ee.servlets;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;

import net.sf.jasperreports.engine.JasperPrint;


/**
 * @author Teodor Danciu (teodord@users.sourceforge.net)
 * @version $Id: BaseHttpServlet.java,v 1.1 2008/09/29 16:21:46 guehene Exp $
 */
public abstract class BaseHttpServlet extends HttpServlet
{


	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 *
	 */
	public static final String DEFAULT_JASPER_PRINT_LIST_SESSION_ATTRIBUTE = "net.sf.jasperreports.j2ee.jasper_print_list";
	public static final String DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE = "net.sf.jasperreports.j2ee.jasper_print";

	public static final String JASPER_PRINT_LIST_REQUEST_PARAMETER = "jrprintlist";
	public static final String JASPER_PRINT_REQUEST_PARAMETER = "jrprint";

	public static final String BUFFERED_OUTPUT_REQUEST_PARAMETER = "buffered"; 
	
			
	/**
	 *
	 */
	public static List getJasperPrintList(HttpServletRequest request)
	{
		String jasperPrintListSessionAttr = request.getParameter(JASPER_PRINT_LIST_REQUEST_PARAMETER);
		if (jasperPrintListSessionAttr == null)
		{
			jasperPrintListSessionAttr = DEFAULT_JASPER_PRINT_LIST_SESSION_ATTRIBUTE;
		}

		String jasperPrintSessionAttr = request.getParameter(JASPER_PRINT_REQUEST_PARAMETER);
		if (jasperPrintSessionAttr == null)
		{
			jasperPrintSessionAttr = DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE;
		}
		
		List jasperPrintList = (List)request.getSession().getAttribute(jasperPrintListSessionAttr);
		if (jasperPrintList == null)
		{
			JasperPrint jasperPrint = (JasperPrint)request.getSession().getAttribute(jasperPrintSessionAttr);
			if (jasperPrint != null)
			{
				jasperPrintList = new ArrayList();
				jasperPrintList.add(jasperPrint);
			}
		}
		
		return jasperPrintList;
	}


}
