/// <summary>
/// 将数据写入器转换为具有键的类型的具体数据写入器。
/// </summary>
/// <param name="dataRW">数据写入器</param>
/// <typeparam name="T">键的类型</typeparam>
/// <returns>返回具体数据写入器</returns>
public static IDataRW <T> As <T>(this IDataRW dataRW)
{
if (dataRW is IDataRW <T> tRW)
{
return(tRW);
}
if (dataRW is IAsDataRW asRW)
{
return(As <T>(asRW.Original));
}
if (dataRW is IDataRW <string> strRW)
{
return(new AsDataRW <string, T>(strRW));
}
if (dataRW is IDataRW <int> intRW)
{
return(new AsDataRW <int, T>(intRW));
}
if (AsHelper.GetInstance(dataRW) is AsHelper asHelper)
{
return(asHelper.As <T>(dataRW));
}
throw new NotSupportedException("Unsupported object.");
}
/// <summary>
/// 将数据写入器转换为具有键的类型的具体数据写入器。
/// </summary>
/// <param name="dataWriter">数据写入器</param>
/// <typeparam name="T">键的类型</typeparam>
/// <returns>返回具体数据写入器</returns>
public static IDataWriter <T> As <T>(this IDataWriter dataWriter)
{
if (dataWriter is IDataWriter <T> tWriter)
{
return(tWriter);
}
if (dataWriter is IAsDataWriter asWriter)
{
return(As <T>(asWriter.Original));
}
if (dataWriter is IDataWriter <string> strWriter)
{
return(new AsDataWriter <string, T>(strWriter));
}
if (dataWriter is IDataWriter <int> intWriter)
{
return(new AsDataWriter <int, T>(intWriter));
}
if (AsHelper.GetInstance(dataWriter) is AsHelper asHelper)
{
return(asHelper.As <T>(dataWriter));
}
throw new NotSupportedException("Unsupported object.");
}
/// <summary>
/// 创建授权代理的数据写入器。
/// </summary>
/// <typeparam name="TOutput">授权的字段类型</typeparam>
/// <typeparam name="TValue">字典的 Value 类型，此功能无需用到该值</typeparam>
/// <param name="dataWriter">原始数据</param>
/// <param name="authorizedKeys">一个标识允许访问的字段列表</param>
/// <returns>返回一个已代理的数据写入器</returns>
public static IDataWriter CreateAuthorizedKeysWriter <TOutput, TValue>(IDataWriter dataWriter, Dictionary <TOutput, TValue> authorizedKeys)
{
var invoker = new CreateAuthorizedKeysRWInvoker <TOutput, TValue>(dataWriter, authorizedKeys);
AsHelper.GetInstance(dataWriter).Invoke(invoker);
return((IDataWriter)invoker.AuthorizedKeysRW);
}
/// <summary>
/// 将数据写入器转换为具有键的类型的具体数据写入器。
/// </summary>
/// <param name="dataRW">数据写入器</param>
/// <typeparam name="T">键的类型</typeparam>
/// <returns>返回具体数据写入器</returns>
public static IDataRW <T> As <T>(this IDataRW dataRW)
{
if (dataRW is IDataRW <T> t)
{
return(t);
}
if (dataRW is IAsDataRW a)
{
return(As <T>(a.Content));
}
if (dataRW is IDataRW <string> s)
{
return(new AsDataRW <string, T>(s));
}
if (dataRW is IDataRW <int> i)
{
return(new AsDataRW <int, T>(i));
}
return(AsHelper.GetInstance(dataRW).As <T>(dataRW));
}
/// <summary>
/// 将数据写入器转换为具有键的类型的具体数据写入器。
/// </summary>
/// <param name="dataWriter">数据写入器</param>
/// <typeparam name="T">键的类型</typeparam>
/// <returns>返回具体数据写入器</returns>
public static IDataWriter <T> As <T>(this IDataWriter dataWriter)
{
if (dataWriter is IDataWriter <T> t)
{
return(t);
}
if (dataWriter is IAsDataWriter a)
{
return(As <T>(a.Content));
}
if (dataWriter is IDataWriter <string> s)
{
return(new AsDataWriter <string, T>(s));
}
if (dataWriter is IDataWriter <int> i)
{
return(new AsDataWriter <int, T>(i));
}
return(AsHelper.GetInstance(dataWriter).As <T>(dataWriter));
}
