elasticsearch - NEST:更新源过滤器

Question

我有一个将查询作为参数的方法，例如:

public ISearchResponse<Object> SearchComponent(SearchDescriptor<Object> query)
{
  ...
}

在此查询中，我想添加一个源过滤器，例如:

public ISearchResponse<Object> SearchComponent(SearchDescriptor<Object> query)
{
    query = query.Source(sf =>
                    sf.Exclude(e => e
                        .Field("SomeField")
                        ));
    ...
}

但是如果查询已经有源过滤器会怎样呢？这个过滤器会覆盖那个过滤器吗？如何更新现有的查询源过滤器？

Answer 1

这似乎可行，但它不是最漂亮的解决方案。谁能想出更好的选择？

public ISearchResponse<Object> SearchComponent(ISearchRequest query)
{
    var excludeFields = new List<string>();
    excludeFields.Add("SomeField");

    if (query.Source == null)
    {
        query.Source = new SourceFilter {Include = "*", Exclude = excludeFields.ToArray()};
    }
    else if (query.Source.Exclude == null)
    {
        query.Source.Exclude = excludeFields.ToArray();
    }
    else
    {
        query.Source.Exclude.And(excludeFields.ToArray());
    }
    ...
}