#region License
/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.Reflection;
using System.Web;
using System.Web.Script.Services;
using Spring.Context;
using Spring.Util;
using Spring.Web.Services;
using Spring.Web.Support;
#endregion
namespace Spring.Web.Script.Services{
/// <summary>
/// An <see cref="System.Web.IHttpHandlerFactory"/> implementation that
/// creates a handler object for either ASP.NET AJAX 1.0 or Spring web services.
/// </summary>
/// <author>Bruno Baia</author>
/// <author>Thomas Broyer</author>
public class ScriptHandlerFactory : AbstractHandlerFactory, IHttpHandlerFactory
{
private static readonly Type scriptHandlerFactoryType =
typeof(ScriptServiceAttribute).Assembly.GetType("System.Web.Script.Services.ScriptHandlerFactory");
private static readonly FieldInfo scriptHandlerFactory_webServiceHandlerFactory =
scriptHandlerFactoryType.GetField("_webServiceHandlerFactory", BindingFlags.NonPublic | BindingFlags.Instance);
private static readonly Type webServiceDataType =
typeof(ScriptServiceAttribute).Assembly.GetType("System.Web.Script.Services.WebServiceData");
private static readonly ConstructorInfo webServiceData_ctor =
webServiceDataType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, null, new Type[] { typeof(Type), typeof(bool) }, null);
private static readonly MethodInfo webServiceData_GetCacheKey =
webServiceDataType.GetMethod("GetCacheKey", BindingFlags.NonPublic | BindingFlags.Static, null, new Type[] { typeof(string) }, null);
private readonly IHttpHandlerFactory scriptHandlerFactory =
(IHttpHandlerFactory)Activator.CreateInstance(scriptHandlerFactoryType, true);
/// <summary>
/// Creates a new instance of the <see cref="ScriptHandlerFactory"/> class.
/// </summary>
public ScriptHandlerFactory()
: base()
{
scriptHandlerFactory_webServiceHandlerFactory.SetValue(
this.scriptHandlerFactory,
new WebServiceHandlerFactory());
}
/// <summary>
/// Retrieves an instance of the <see cref="System.Web.IHttpHandler"/>
/// implementation for handling web service requests
/// for both Spring and ASP.NET AJAX 1.0 web services.
/// </summary>
/// <param name="context">The current HTTP context.</param>
/// <param name="requestType">The type of HTTP request (GET or POST).</param>
/// <param name="url">The url of the web service.</param>
/// <param name="pathTranslated">The physical application path for the web service.</param>
/// <returns>The web service handler object.</returns>
public override IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated)
{
string filename = VirtualPathUtility.ToAbsolute(context.Request.FilePath);
string cacheKey = (string)webServiceData_GetCacheKey.Invoke(null, new object[] { filename });
object webServiceData = context.Cache.Get(cacheKey);
if (webServiceData == null)
{
IConfigurableApplicationContext appContext = base.GetCheckedApplicationContext(url);
string appRelativeVirtualPath = WebUtils.GetAppRelativePath(url);
NamedObjectDefinition nod = FindWebObjectDefinition(appRelativeVirtualPath, appContext.ObjectFactory);
if (nod != null)
{
Type serviceType = appContext.GetType(nod.Name);
object[] attrs = serviceType.GetCustomAttributes(typeof(ScriptServiceAttribute), false);
if (attrs.Length > 0)
{
webServiceData = webServiceData_ctor.Invoke(new object[] { serviceType, false });
context.Cache.Insert(cacheKey, webServiceData);
}
}
}
return this.scriptHandlerFactory.GetHandler(context, requestType, url, pathTranslated);
}
/// <summary>
/// Enables a factory to reuse an existing handler instance.
/// </summary>
/// <param name="handler">The <see cref="System.Web.IHttpHandler" /> object to reuse.</param>
public override void ReleaseHandler(IHttpHandler handler)
{
this.scriptHandlerFactory.ReleaseHandler(handler);
}
/// <summary>
/// Create a handler instance for the given URL.
/// </summary>
/// <param name="appContext">the application context corresponding to the current request</param>
/// <param name="context">The <see cref="HttpContext"/> instance for this request.</param>
/// <param name="requestType">The HTTP data transfer method (GET, POST, ...)</param>
/// <param name="rawUrl">The requested <see cref="HttpRequest.RawUrl"/>.</param>
/// <param name="physicalPath">The physical path of the requested resource.</param>
/// <returns>A handler instance for the current request.</returns>
protected override IHttpHandler CreateHandlerInstance( IConfigurableApplicationContext appContext, HttpContext context, string requestType, string rawUrl, string physicalPath )
{
throw new NotSupportedException();
}
}
}
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