ScriptHandlerFactory.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / Script / Services / ScriptHandlerFactory.cs / 1305376 / ScriptHandlerFactory.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System.Web.SessionState; 
using System.Security.Permissions; 
using System.Security;
 
namespace System.Web.Script.Services {
    internal class ScriptHandlerFactory : IHttpHandlerFactory {
        IHttpHandlerFactory _restHandlerFactory;
        IHttpHandlerFactory _webServiceHandlerFactory; 

        internal class HandlerWrapper : IHttpHandler { 
            protected IHttpHandler _originalHandler; 
            private IHttpHandlerFactory _originalFactory;
 
            internal HandlerWrapper(IHttpHandler originalHandler, IHttpHandlerFactory originalFactory) {
                _originalFactory = originalFactory;
                _originalHandler = originalHandler;
            } 

            internal void ReleaseHandler() { 
                _originalFactory.ReleaseHandler(_originalHandler); 
            }
 
            public bool IsReusable {
                get {
                    return _originalHandler.IsReusable;
                } 
            }
 
            public void ProcessRequest(HttpContext context) { 
                _originalHandler.ProcessRequest(context);
            } 
        }

        internal class HandlerWrapperWithSession : HandlerWrapper, IRequiresSessionState {
            internal HandlerWrapperWithSession(IHttpHandler originalHandler, IHttpHandlerFactory originalFactory) 
                : base(originalHandler, originalFactory) {}
        } 
 
        private class AsyncHandlerWrapper : HandlerWrapper, IHttpAsyncHandler {
            internal AsyncHandlerWrapper(IHttpHandler originalHandler, IHttpHandlerFactory originalFactory) 
                :
                base(originalHandler, originalFactory) { }

            public IAsyncResult BeginProcessRequest(HttpContext context, AsyncCallback cb, object extraData) { 
                return ((IHttpAsyncHandler)_originalHandler).BeginProcessRequest(context, cb, extraData);
            } 
 
            public void EndProcessRequest(IAsyncResult result) {
                ((IHttpAsyncHandler)_originalHandler).EndProcessRequest(result); 
            }
        }

        private class AsyncHandlerWrapperWithSession : AsyncHandlerWrapper, IRequiresSessionState { 
            internal AsyncHandlerWrapperWithSession(IHttpHandler originalHandler, IHttpHandlerFactory originalFactory)
                : base(originalHandler, originalFactory) { } 
        } 

        public ScriptHandlerFactory() { 
            _restHandlerFactory = new RestHandlerFactory();
            _webServiceHandlerFactory = new System.Web.Services.Protocols.WebServiceHandlerFactory();
        }
 
        [SecuritySafeCritical]
        public virtual IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated) { 
            IHttpHandler handler; 
            IHttpHandlerFactory factory;
            if (RestHandlerFactory.IsRestRequest(context)) { 
                // It's a REST request
                factory = _restHandlerFactory;
            }
            else { 
                // It's a regular asmx web request, so delegate to the WebServiceHandlerFactory
                factory = _webServiceHandlerFactory; 
            } 

            handler = factory.GetHandler(context, requestType, url, pathTranslated); 

            bool requiresSession = handler is IRequiresSessionState;

            if (handler is IHttpAsyncHandler) { 
                if (requiresSession)
                    return new AsyncHandlerWrapperWithSession(handler, factory); 
                else 
                    return new AsyncHandlerWrapper(handler, factory);
            } 

            if (requiresSession)
                return new HandlerWrapperWithSession(handler, factory);
            else 
                return new HandlerWrapper(handler, factory);
        } 
 
        public virtual void ReleaseHandler(IHttpHandler handler) {
            if (handler == null) { 
                throw new ArgumentNullException("handler");
            }
            ((HandlerWrapper)handler).ReleaseHandler();
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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