Question

我想知道的是确定哪个子类实际传入函数的最佳表现。

以下是我将介绍最佳性能的三种不同方式：（ACHData，CCData和DC数据都从BaseData继承）

public BaseProcessor GetProcessor(BaseData paymentInfo)
{
    if (paymentInfo.GetType() == typeof(ACHData))
    {
        return GetACHProcessor((ACHData)paymentInfo);
    }
    else if (paymentInfo.GetType() == typeof(CCData))
    {
        return GetCCProcessor((CCData)paymentInfo);
    }
    else if (paymentInfo.GetType() == typeof(DCData))
    {
        return GetDCProcessor((DCData)paymentInfo);
    }
    else
    {
        throw new Exception(ExceptionMessage);
    }
}

public BaseProcessor GetProcessor(BaseData paymentInfo)
{
    if (paymentInfo is ACHData)
    {
        return GetACHProcessor((ACHData)paymentInfo);
    }
    else if (paymentInfo is CCData)
    {
        return GetCCProcessor((CCData)paymentInfo);
    }
    else if (paymentInfo is DCData)
    {
        return GetDCProcessor((DCData)paymentInfo);
    }
    else
    {
        throw new Exception(ExceptionMessage);
    }
}

public BaseProcessor GetProcessor(BaseData paymentInfo)
{
    var achInfo = paymentInfo as ACHData;
    if (achInfo != null)
    {
        return GetACHProcessor(achInfo);
    }

    var ccInfo = paymentInfo as CCData;
    if (ccInfo != null)
    {
        return GetCCProcessor(ccInfo);
    }

    var dcInfo = paymentInfo as DCData;
    if (dcInfo != null)
    {
        return GetDCProcessor(dcInfo);
    }

    throw new Exception(ExceptionMessage);
}

Answer 1

我会重新思考你的整个设计。让您的类实现一个界面，迫使他们选择要作为处理器提供的内容：

public interface IKnowWhatProcessorIWant {
    IProcessor CreateProcessor();
}

public class ACHData : BaseData, IKnowWhatProcessorIWant {
    public IProcessor CreateProcessor() {
        return new GetACHProcessor(this);
    }
}

然后您的GetProcessor代码变为：

public BaseProcessor GetProcessor(IKnowWhatProcessorIWant obj) {
    return obj.CreateProcessor();
}

...或者，你可以完全省略那个方法。

类型比较性能：TryCast与GetType

1 个答案: