弹性嵌套将元添加到聚合

Question

I am successfully creating Aggregations with my Elastic NEST query but I would like to pass some additional information in I have seen that I can use Meta for this, but I cannot find any documentation for doing it in NEST.

HERE is my nest Aggregations code

.Aggregations(aa => aa.Terms("groups", sp => sp.Field(p => p.ProductSpecification.Suffix("name"))
                    .Aggregations(aaa => aaa
                        .Terms("attribute", tt => tt.Field(ff => ff.ProductSpecification.Suffix("value"))))

Basically id like to be add say SpecificationId to the meta any hints?

Answer 1

You can add meta per aggregation, and it'll be returned on the aggregation response

var response = client.Search<User>(s => s
    .Size(0)
    .Query(q => +q
        .Term(m => m
            .Field(f => f.Badges.First().Name)
            .Value("c#")
        )
    )
    .Aggregations(a => a
        .SignificantTerms("badges", st => st
            .Field(f => f.Badges.First().Name)
            .Meta(m => m
                .Add("meta_1", "value_1")
                .Add("meta_2", 2)
            )
        )
    )
);