viewhandler.java

国外的一套开源CRM

/*
 * $Id: ViewHandler.java,v 1.2 2003/09/14 05:36:48 jonesde Exp $
 *
 * Copyright (c) 2002-2003 The Open For Business Project - www.ofbiz.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
 * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.ofbiz.content.webapp.view;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 * ViewHandler - View Handler Interface
 *
 * @author     <a href="mailto:[e-mail]">Andy Zeneski</a>
 * @version    $Revision: 1.2 $
 * @since      2.0
 */
public interface ViewHandler {

    /**
     * Initializes the handler. Since handlers use the singleton pattern this method should only be called
     * the first time the handler is used.
     * @param context ServletContext This may be needed by the handler in order to lookup properties or XML
     * definition files for rendering pages or handler options.
     * @throws ViewHandlerException
     */
    public void init(ServletContext context) throws ViewHandlerException;

    /**
     * Render the page.
     * @param name The name of the view.
     * @param page The source of the view; could be a page, url, etc depending on the type of handler.
     * @param info An info string attached to this view
     * @param request The HttpServletRequest object used when requesting this page.
     * @param response The HttpServletResponse object to be used to present the page.
     * @throws ViewHandlerException
     */
    public void render(String name, String page, String info, String contentType, String encoding, HttpServletRequest request, HttpServletResponse response) throws ViewHandlerException;

}