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Web Script Framework extraction - allows web scripts to be hosted in a stand-alone presentation tier.

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@7437 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
David Caruana
2007-11-26 17:04:44 +00:00
parent 474770e6d5
commit 82134bf1f0
120 changed files with 2228 additions and 12732 deletions
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132
source/java/org/alfresco/web/scripts/WebScriptServlet.java
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/*
* Copyright (C) 2005-2007 Alfresco Software Limited.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* As a special exception to the terms and conditions of version 2.0 of
* the GPL, you may redistribute this Program in connection with Free/Libre
* and Open Source Software ("FLOSS") applications as described in Alfresco's
* FLOSS exception. You should have recieved a copy of the text describing
* the FLOSS exception, and it is also available here:
* http://www.alfresco.com/legal/licensing"
*/
package org.alfresco.web.scripts;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.alfresco.config.Config;
import org.alfresco.config.ConfigService;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.web.config.ServerConfigElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
* Entry point for Web Scripts
*
* @author davidc
*/
public class WebScriptServlet extends HttpServlet
{
private static final long serialVersionUID = 4209892938069597860L;
// Logger
private static final Log logger = LogFactory.getLog(WebScriptServlet.class);
// Component Dependencies
protected DeclarativeWebScriptRegistry registry;
protected ServiceRegistry serviceRegistry;
protected WebScriptServletAuthenticator authenticator;
protected ConfigService configService;
/** Host Server Configuration */
protected static ServerConfigElement serverConfig;
@Override
public void init() throws ServletException
{
super.init();
ApplicationContext context = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
registry = (DeclarativeWebScriptRegistry)context.getBean("webscripts.registry");
serviceRegistry = (ServiceRegistry)context.getBean(ServiceRegistry.SERVICE_REGISTRY);
configService = (ConfigService)context.getBean("webClientConfigService");
// retrieve authenticator via servlet initialisation parameter
String authenticatorId = getInitParameter("authenticator");
if (authenticatorId == null || authenticatorId.length() == 0)
{
authenticatorId = getDefaultAuthenticator();
}
Object bean = context.getBean(authenticatorId);
if (bean == null || !(bean instanceof WebScriptServletAuthenticator))
{
throw new ServletException("Initialisation parameter 'authenticator' does not refer to a Web Script authenticator (" + authenticatorId + ")");
}
authenticator = (WebScriptServletAuthenticator)bean;
// retrieve host server configuration
Config config = configService.getConfig("Server");
serverConfig = (ServerConfigElement)config.getConfigElement(ServerConfigElement.CONFIG_ELEMENT_ID);
// servlet specific initialisation
initServlet(context);
}
/*
* (non-Javadoc)
*
* @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest,
* javax.servlet.http.HttpServletResponse)
*/
protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
{
if (logger.isDebugEnabled())
logger.debug("Processing request (" + req.getMethod() + ") " + req.getRequestURL() + (req.getQueryString() != null ? "?" + req.getQueryString() : ""));
if (req.getCharacterEncoding() == null)
{
req.setCharacterEncoding("UTF-8");
}
WebScriptRuntime runtime = new WebScriptServletRuntime(registry, serviceRegistry, authenticator, req, res, serverConfig);
runtime.executeScript();
}
/**
* Servlet specific initialisation
*
* @param context
*/
protected void initServlet(ApplicationContext context)
{
// NOOP
}
/**
* @return default authenticator (bean name)
*/
protected String getDefaultAuthenticator()
{
return "webscripts.authenticator.webclient";
}
}