Question

我正在构建一个允许我在Mongo数据库中缓存常见请求的解决方案。我想尽可能使它成为通用的，因此，我创建了包含以下属性的ConfigurationElement：

名称
提供商
maxItems

在配置文件中编写时，如下所示：

<add name="mongoCachingProvider" provider="GeniDev.ApplicationBlocks.Data.Caching.Mongo.Configuration.MongoCachingBackingStoreElement, GeniDev.ApplicationBlocks.Data.Caching.Mongo"
     maxItems="10" />

此配置部分的.NET类如下所示：

public class CachingBackingStoreElement : ConfigurationElement
{
    #region Properties

    // Provide some constants that are used by this class.
    private const string CachingBackingStoreNameProperty = "name";
    private const string CachingBackingStoreProviderProperty = "provider";
    private const string CachingBackingStoreMaxItemsProperty = "maxItems";

    /// <summary>
    ///     Gets or sets the name of the provider.
    /// </summary>
    [ConfigurationProperty(CachingBackingStoreNameProperty, IsRequired = true)]
    public string Name
    {
        get { return (string)this[CachingBackingStoreNameProperty]; }
        set { this[CachingBackingStoreNameProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the provider.
    /// </summary>
    [ConfigurationProperty(CachingBackingStoreProviderProperty, IsRequired = true)]
    [TypeConverter(typeof(TypeNameConverter))]
    public Type Provider
    {
        get { return (Type)this[CachingBackingStoreProviderProperty]; }
        set { this[CachingBackingStoreProviderProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the maximum items that should be stored in the cache.
    /// </summary>
    [ConfigurationProperty(CachingBackingStoreMaxItemsProperty, IsRequired = true)]
    public int Port
    {
        get { return (int)this[CachingBackingStoreMaxItemsProperty]; }
        set { this[CachingBackingStoreMaxItemsProperty] = value; }
    }

    #endregion
}

现在，我需要一个Mongo配置部分，需要其他属性，例如dbServer，dbName，dbCacheBucket和maxSizeInMB。

因此，我创建了一个新的ConfigurationElement，它继承自上面的CachingBackingStoreElement。

代码导致以下结果：

public class MongoCachingBackingStoreElement : CachingBackingStoreElement
{
    #region Properties

    // Provide some constants that are used by this class.
    private const string MongoCachingBackingStoreServerProperty = "dbServer";
    private const string MongoCachingBackingStoreProperty = "dbPort";
    private const string MongoCachingBackingStoreNameProperty = "dbName";
    private const string MongoCachingBackingStoreBucketNameProperty = "dbCacheBucket";
    private const string MongoCachingBackingStoreMaxSizeInMb = "maxSizeInMB";

    /// <summary>
    ///     Gets or sets the server.
    /// </summary>
    [ConfigurationProperty(MongoCachingBackingStoreServerProperty, IsRequired = true)]
    public string Server
    {
        get { return (string)this[MongoCachingBackingStoreServerProperty]; }
        set { this[MongoCachingBackingStoreServerProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the port.
    /// </summary>
    [ConfigurationProperty(MongoCachingBackingStoreProperty, IsRequired = true)]
    public int Port
    {
        get { return (int)this[MongoCachingBackingStoreProperty]; }
        set { this[MongoCachingBackingStoreProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the database name.
    /// </summary>
    [ConfigurationProperty(MongoCachingBackingStoreNameProperty, IsRequired = true)]
    public string DbName
    {
        get { return (string)this[MongoCachingBackingStoreNameProperty]; }
        set { this[MongoCachingBackingStoreNameProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the bucket name.
    /// </summary>
    [ConfigurationProperty(MongoCachingBackingStoreBucketNameProperty, IsRequired = true)]
    public string CacheBucketName
    {
        get { return (string)this[MongoCachingBackingStoreBucketNameProperty]; }
        set { this[MongoCachingBackingStoreBucketNameProperty] = value; }
    }

    /// <summary>
    ///     Gets or sets the maximum size that the cache should take (in MegaBytes).
    /// </summary>
    [ConfigurationProperty(MongoCachingBackingStoreMaxSizeInMb, IsRequired = true)]
    public int MaxSize
    {
        get { return (int)this[MongoCachingBackingStoreMaxSizeInMb]; }
        set { this[MongoCachingBackingStoreMaxSizeInMb] = value; }
    }

    #endregion
}

这允许我在配置文件中编写以下内容：

<add name="mongoCachingProvider" provider="GeniDev.ApplicationBlocks.Data.Caching.Mongo.Configuration.MongoCachingBackingStoreElement, GeniDev.ApplicationBlocks.Data.Caching.Mongo"
     maxItems="10" dbServer="127.0.0.1" dbPort="27017" dbName="AppServer-Cache" dbCacheBucket="ODataRequestsCache" maxSizeInMB="500" />

当我立即请求配置部分时，我收到以下错误：

System.Configuration.ConfigurationErrorsExceptionUnrecognized attribute 'maxSizeInMB'. Note that attribute names are case-sensitive.

任何人都知道如何解决这个问题？

如何在多个级别使用具有继承的配置节

0 个答案: