如何使用 Factories GetByFilter 方法和 prestasharp 获取超过 5000 个实体

Question

库版本：

1.2.9

NuGet 包Url:

https://www.nuget.org/packages/PrestaSharp/1.2.9

Prestashop 版本：

1.7.7.0

描述错误：

总是带有分页的 PrestaSharp GetByFilter return 相同的实体列表

由于 ProductFactory 的 GetByFilter 方法 return如果有超过 5000 个产品与过滤器匹配，则为 null。我决定像这样通过分页来获取它们

_productFactory.GetIdsByFilter(filter, null, "[" + startingIndex.ToString() + "," + count.ToString() + "]");

但即使 startingIndex（因为循环）发生变化，结果也是一样的

完整代码：

filter.Add("date_upd", "[" + dFrom + "," + dTo + "]");

int i = 0;

List<long> AllProducts = new List<long>();
List<long> products;
while (true) // this loop never breaks
{ 
    int startingIndex = i++  * count;
    products = _productFactory.GetIdsByFilter(filter, null, "[" + startingIndex.ToString() + "," + (count).ToString() + "]"); // returns same products in every iteration
    if (products?.Any() == true) // to check the list is not empty
    {
        AllProducts.AddRange(products);
        if (products.Count < count)
        {
            break;
        }
    }
    else
        break;
}

Answer 1

您只需删除 'limit' 参数中的括号即可。当 Github 文档给出带括号的示例时，这是一个错误。这是我自己的实现，我并行发送多个请求以加快处理速度，问候。

public async Task<List<PS_Entity>> GetElements(int pageSize = 100) {
            try {
                var numberOfElements = factory.GetIds().Count;
                var numberOfParallelTasks = numberOfElements >= pageSize ? numberOfElements / pageSize : 1;
                var loadElementsTasks = Enumerable.Range(0, numberOfParallelTasks).Select(taskNumber => factory.GetByFilterAsync(null, "id_ASC", $"{taskNumber * pageSize},{pageSize}")).ToList();
                if (numberOfElements % pageSize != 0) {
                    var skiped = numberOfParallelTasks * pageSize;
                    loadElementsTasks.Add(factory.GetByFilterAsync(null, "id_ASC", $"{skiped},{numberOfElements - skiped}"));
                }
                var elements = (await Task.WhenAll(loadElementsTasks)).SelectMany(elements => elements).ToList();
                return elements;
            } catch (PrestaSharpException e) {
                if ((int)e.ResponseHttpStatusCode == 404)
                    Console.WriteLine($"No existen {RemoveFactoryFromName(factory)}'s.");
                return new List<PS_Entity>();
            }
        }

如何使用 Factories GetByFilter 方法和 prestasharp 获取超过 5000 个实体

how to get more than 5000 entities by using Factories GetByFilter method with prestasharp

c#

asp.net-core

prestashop-1.7