/* * Copyright (c) 2001-2008 Caucho Technology, Inc. All rights reserved. * * The Apache Software License, Version 1.1 * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, if * any, must include the following acknowlegement: * "This product includes software developed by the * Caucho Technology (http://www.caucho.com/)." * Alternately, this acknowlegement may appear in the software itself, * if and wherever such third-party acknowlegements normally appear. * * 4. The names "Hessian", "Resin", and "Caucho" must not be used to * endorse or promote products derived from this software without prior * written permission. For written permission, please contact * info@caucho.com. * * 5. Products derived from this software may not be called "Resin" * nor may "Resin" appear in their names without prior written * permission of Caucho Technology. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * @author Scott Ferguson */ package com.caucho.services.server; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import java.util.HashMap; /** * Context for a service, to handle request-specific information. */ public class ServiceContext { private static final ThreadLocal _localContext = new ThreadLocal(); private ServletRequest _request; private String _serviceName; private String _objectId; private int _count; private HashMap _headers = new HashMap(); private ServiceContext() { } /** * Sets the request object prior to calling the service's method. * * @param request the calling servlet request * @param serviceId the service identifier * @param objectId the object identifier */ public static void begin(ServletRequest request, String serviceName, String objectId) throws ServletException { ServiceContext context = (ServiceContext) _localContext.get(); if (context == null) { context = new ServiceContext(); _localContext.set(context); } context._request = request; context._serviceName = serviceName; context._objectId = objectId; context._count++; } /** * Returns the service request. */ public static ServiceContext getContext() { return (ServiceContext) _localContext.get(); } /** * Adds a header. */ public void addHeader(String header, Object value) { _headers.put(header, value); } /** * Gets a header. */ public Object getHeader(String header) { return _headers.get(header); } /** * Gets a header from the context. */ public static Object getContextHeader(String header) { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context.getHeader(header); else return null; } /** * Returns the service request. */ public static ServletRequest getContextRequest() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._request; else return null; } /** * Returns the service id, corresponding to the pathInfo of the URL. */ public static String getContextServiceName() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._serviceName; else return null; } /** * Returns the object id, corresponding to the ?id= of the URL. */ public static String getContextObjectId() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._objectId; else return null; } /** * Cleanup at the end of a request. */ public static void end() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null && --context._count == 0) { context._request = null; context._headers.clear(); } } /** * Returns the service request. * * @deprecated */ public static ServletRequest getRequest() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._request; else return null; } /** * Returns the service id, corresponding to the pathInfo of the URL. * * @deprecated */ public static String getServiceName() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._serviceName; else return null; } /** * Returns the object id, corresponding to the ?id= of the URL. * * @deprecated */ public static String getObjectId() { ServiceContext context = (ServiceContext) _localContext.get(); if (context != null) return context._objectId; else return null; } }