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/*******************************************************************************
* Copyright (c) 2005, 2010 Cognos Incorporated, IBM Corporation and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cognos Incorporated - initial API and implementation
* IBM Corporation - bug fixes and enhancements
*******************************************************************************/
package org.eclipse.equinox.http.servlet.internal;
import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.osgi.service.http.HttpContext;
//This class wraps the servlet object registered in the HttpService.registerServlet call, to manage the context classloader when handleRequests are being asked.
public class ServletRegistration extends Registration {
private Servlet servlet; //The actual servlet object registered against the http service. All requests will eventually be delegated to it.
private HttpContext httpContext; //The context used during the registration of the servlet
private ClassLoader registeredContextClassLoader;
public ServletRegistration(Servlet servlet, HttpContext context) {
this.servlet = servlet;
this.httpContext = context;
registeredContextClassLoader = Thread.currentThread().getContextClassLoader();
}
public void destroy() {
ClassLoader original = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(registeredContextClassLoader);
super.destroy();
servlet.destroy();
} finally {
Thread.currentThread().setContextClassLoader(original);
}
}
//Delegate the init call to the actual servlet
public void init(ServletConfig servletConfig) throws ServletException {
ClassLoader original = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(registeredContextClassLoader);
servlet.init(servletConfig);
} finally {
Thread.currentThread().setContextClassLoader(original);
}
}
//Delegate the handling of the request to the actual servlet
public void service(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
ClassLoader original = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(registeredContextClassLoader);
if (httpContext.handleSecurity(req, resp))
servlet.service(req, resp);
} finally {
Thread.currentThread().setContextClassLoader(original);
}
}
public Servlet getServlet() {
return servlet;
}
public HttpContext getHttpContext() {
return httpContext;
}
}
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