org.nextframework.core.web.NextWeb.java Source code

Introduction

Here is the source code for org.nextframework.core.web.NextWeb.java

Source

/*
 * Next Framework http://www.nextframework.org
 * Copyright (C) 2009 the original author or authors.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * You may obtain a copy of the license at
 * 
 *     http://www.gnu.org/copyleft/lesser.html
 * 
 */
package org.nextframework.core.web;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nextframework.context.NotInNextContextException;
import org.nextframework.core.standard.Next;

/**
 * @author rogelgarcia
 * @since 21/01/2006
 * @version 1.1
 */
public class NextWeb extends Next {

    protected static final Log log = LogFactory.getLog(NextWeb.class);

    private static WebRequestFactory webRequestFactory = new WebRequestFactory();

    public static void setWebRequestFactory(WebRequestFactory webRequestFactory) {
        NextWeb.webRequestFactory = webRequestFactory;
    }

    public static void createRequestContext(HttpServletRequest request, HttpServletResponse response) {
        if (request == null || response == null) {
            throw new NullPointerException();
        }
        ServletContext servletContext = request.getSession().getServletContext();

        getWebApplicationContext(servletContext);

        getRequestContext(request, response);
    }

    public static WebRequestContext getRequestContext() throws NotInNextContextException {
        WebRequestContext context = (WebRequestContext) requestContext.get();
        if (context == null) {
            StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();

            String msg = "The code is not running in a NEXT context!";
            if (stackTrace.length >= 4) {
                msg += "\nClass: " + stackTrace[3].getClassName() + " " + "\nMethod: "
                        + stackTrace[3].getMethodName() + " " + "\nLine: " + stackTrace[3].getLineNumber();
            }

            throw new NotInNextContextException(msg);
        }
        return context;
    }

    public static WebApplicationContext getApplicationContext() throws NotInNextContextException {
        WebApplicationContext nextApplicationContext = (WebApplicationContext) applicationContext.get();
        if (nextApplicationContext == null) {
            StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
            throw new NotInNextContextException("The code is not running in a NEXT context!" + "\nClass: "
                    + stackTrace[3].getClassName() + " " + "\nMethod: " + stackTrace[3].getMethodName() + " "
                    + "\nLine: " + stackTrace[3].getLineNumber());
        }
        return nextApplicationContext;
    }

    public static WebApplicationContext createApplicationContext(ServletContext servletContext) {

        WebApplicationContext applicationContext;
        applicationContext = new DefaultWebApplicationContext(servletContext);
        servletContext.setAttribute(WebApplicationContext.APPLICATION_CONTEXT_ATTRIBUTE, applicationContext);

        Next.applicationContext.set(applicationContext);

        return applicationContext;
    }

    public static WebRequestContext getRequestContext(HttpServletRequest request, HttpServletResponse response) {
        //verificar se j existe um request context
        createApplicationContext(request.getSession().getServletContext());
        WebRequestContext requestContext = (WebRequestContext) request
                .getAttribute(WebRequestContext.REQUEST_CONTEXT_ATTRIBUTE);
        if (requestContext == null) {
            log.trace("Creating NEXT request context... ");
            //requestContext = new DefaultWebRequestContext(request, response, getWebApplicationContext(request.getSession().getServletContext()));
            requestContext = webRequestFactory.createWebRequestContext(request, response,
                    getWebApplicationContext(request.getSession().getServletContext()));
            request.setAttribute(WebRequestContext.REQUEST_CONTEXT_ATTRIBUTE, requestContext);
            Next.requestContext.set(requestContext);
        } else {
            //atualizar o request por causa do multipart
            //requestContext = new DefaultWebRequestContext(request, response, getWebApplicationContext(request.getSession().getServletContext()));
            requestContext = webRequestFactory.createWebRequestContext(request, response,
                    getWebApplicationContext(request.getSession().getServletContext()));
            request.setAttribute(WebRequestContext.REQUEST_CONTEXT_ATTRIBUTE, requestContext);
            Next.requestContext.set(requestContext);
        }
        return requestContext;
    }

    public static WebApplicationContext getWebApplicationContext(ServletContext servletContext) {
        //verificar se j existe um applicationContext
        WebApplicationContext applicationContext = (WebApplicationContext) servletContext
                .getAttribute(WebApplicationContext.APPLICATION_CONTEXT_ATTRIBUTE);
        if (applicationContext == null) {
            applicationContext = createApplicationContext(servletContext);
            //         throw new NotInNextContextException("O contexto de aplicao NEXT ainda no foi criado. Verifique se o listener ContextLoaderListener est configurado no web.xml");
        }
        Next.applicationContext.set(applicationContext);
        return applicationContext;
    }
}