c# - 使几个类似的特定方法通用

Question

我有这样的方法...

    static async Task GetLeads(ForceClient client)
    {
        Console.WriteLine("Get Leads");
        var accts = new List<Lead>();
        var results = await client.QueryAsync<Lead>(Lead._select);
        var totalSize = results.TotalSize;
        Console.WriteLine("Queried " + totalSize + " leads.");
        accts.AddRange(results.Records);
        Console.WriteLine("Added " + results.Records.Count + " leads...");
        var nextRecordsUrl = results.NextRecordsUrl;
        if (!string.IsNullOrEmpty(nextRecordsUrl))
        {
            Console.WriteLine("Found more records...");

            while (true)
            {
                var continuationResults = await client.QueryContinuationAsync<Lead>(nextRecordsUrl);
                Console.WriteLine("Queried an additional " + continuationResults.Records.Count + " leads.");
                accts.AddRange(continuationResults.Records);
                if (string.IsNullOrEmpty(continuationResults.NextRecordsUrl)) break;

                nextRecordsUrl = continuationResults.NextRecordsUrl;
            }
        }
        Upsert(accts, Lead.target);
    }

我有另一种方法..

    static async Task GetSupplierProducts(ForceClient client)
    {
        Console.WriteLine("Get SupplierProduct");
        var accts = new List<SupplierProduct>();
        var results = await client.QueryAsync<SupplierProduct>(SupplierProduct._select);
        var totalSize = results.TotalSize;
        Console.WriteLine("Queried " + totalSize + " SupplierProduct.");
        accts.AddRange(results.Records);
        Console.WriteLine("Added " + results.Records.Count + " SupplierProduct...");
        var nextRecordsUrl = results.NextRecordsUrl;
        if (!string.IsNullOrEmpty(nextRecordsUrl))
        {
            Console.WriteLine("Found more records...");

            while (true)
            {
                var continuationResults = await client.QueryContinuationAsync<SupplierProduct>(nextRecordsUrl);
                Console.WriteLine("Queried an additional " + continuationResults.Records.Count + " SupplierProduct.");
                accts.AddRange(continuationResults.Records);
                if (string.IsNullOrEmpty(continuationResults.NextRecordsUrl)) break;

                nextRecordsUrl = continuationResults.NextRecordsUrl;
            }
        }
        Upsert(accts, SupplierProduct.target);
    }

我怎样才能创建一个通用抽象此行为的方法？

Answer 1

类型 Lead 和 SupplierProduct 必须以某种方式相关，因为它们要么实现相同的接口(interface)，要么从相同的基类继承以使其工作。显然，相似之处是 _select，它显然是一个不能包含在接口(interface)中的静态成员。此外，人类可读字符串的生成必须重构为类型。

如果 Base 是假设的基类，则泛型函数的签名必须如下所示。

static async Task Get<T>(ForceClient client) where T : Base