CS中的配置管理（Configuration）

CommunityServer中的配置信息存在在Web/communityserver.config中。
其中，系统配置信心XML结构如下：

<?xml version="1.0" encoding="utf-8" ?> 
    <CommunityServer>
    <Core 
            defaultLanguage="en-US" 
            disableEmail="false"
            disableIndexing="false" 
            disableThreading="false"
            cacheFactor="5"
            systemType = "Self"
            textEditorType = "Telligent.FreeTextBoxWraper.FTB, Telligent.FreeTextBoxWraper" 
            ....
        announcementRssUrl="http://communityserver.org/blogs/announcements/rss.aspx"
        >
            <providers>
                <clear/>
                <add 
                    name = "CommonDataProvider" 
                    type = "CommunityServer.Data.SqlCommonDataProvider, CommunityServer.SqlDataProvider" 
                    connectionStringName = "SiteSqlServer"    databaseOwnerStringName = "SiteSqlServerOwner"
                />    
                    
            </providers>
            <appLocation>
                <add pattern = "/blogs" name="BlogPublic" type = "weblog" />
                        </appLocation>
            
            <extensionModules>
                <add name="PassportAuthentication"
                    extensionType="Security"
                    type="Telligent.CommunityServer.Security.PassportAuthentication, Telligent.CommunityServer.SecurityModules"
                />                
            </extensionModules>
        </Core>
        ....
    </CommunityServer>

在Component/Configuration目录下有一个CSConfiguration类，主要负责将XML的解析成对象实体。例如，当我们编写下面代码获得系统配置实体：
   

CSConfiguration config = CSConfiguration.GetConfig();

在CSConfiguration类中，该方法代码如下：

 public static CSConfiguration GetConfig() 
        {
            CSConfiguration config = CSCache.Get(CacheKey) as CSConfiguration;
            if(config == null)
            {
                string path = null;
                HttpContext context = HttpContext.Current;
                if(context != null)
                    path = context.Server.MapPath("~/communityserver.config");
                else
                    path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory,  "communityserver.config");

                XmlDocument doc = new XmlDocument();
                doc.Load(path);
                config = new CSConfiguration(doc);
                CSCache.Max(CacheKey,config,new CacheDependency(path));

                CSCache.ReSetFactor(config.CacheFactor);
            }
            return config;
            
        }

首先，从Cache中读取对象，注意，该Cache对象与Config文件有依赖关系。接着，调用new CSConfiguration(doc)将配置文件中的Core节点内容读入config对象中。