using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using System.Xml;
using System.Xml.Serialization;
using System.Collections.ObjectModel;
namespace MarvellousWorks
{
    /// <summary>
    /// 安全信息上下文
    /// </summary>
    /// <remarks>
    ///     为了同时满足Binary调用和Soap调用的需要，完全定制化了二进制序列化和SOAP序列化的过程
    /// </remarks>
    [XmlRoot("securityContext")]
    [Serializable]
    public class SecurityContext : IXmlSerializable, ISerializable
    {
        Protected Consts

        Protected Fields

        Constructors


        /// <summary>
        /// 访问Context内容项
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        /// <remarks>设计上，这个类型不会随便抛出异常，除非提供的key值为空串</remarks>
        public virtual string this[string key]
        {
            get
            {
                if (string.IsNullOrEmpty(key))
                    throw new ArgumentNullException("key");

                string value;
                if (dictionary.TryGetValue(key, out value))
                    return value;
                else
                    return string.Empty;
            }
            set
            {
                if (string.IsNullOrEmpty(key))
                    throw new ArgumentNullException("key");

                if (dictionary.ContainsKey(key))
                    dictionary[key] = value;
                else
                    dictionary.Add(key, value);
            }
        }

        IXmlSerializable Members


        ISerializable Members        

        Helper Methods
    }
}

相应的UnitTest

 1  /// <summary>
 2    /// 测试安全上下文
 3    /// </summary>
 4    [TestClass]
 5    public class SecurityContextFixture
 6    {
 7        /// <summary>
 8        /// Prepare
 9        /// </summary>
10        /// <returns></returns>
11        private SecurityContext CreateContext()
12        {
13            SecurityContext context = new SecurityContext();
14            context["hello"] = "world";
15            context["1"] = "first";
16            return context;
17        }
18
19        /// <summary>
20        /// 访问SecurityContext
21        /// </summary>
22        [TestMethod]
23        public void TestContextAccess()
24        {
25            SecurityContext context = CreateContext();
26
27            Assert.AreEqual<string>("world", context["hello"]);
28            Assert.AreEqual<string>("first", context["1"]);
29            Assert.IsTrue(string.IsNullOrEmpty(context["2"]));
30
31            context["1"] = "First";
32