Using Elasticsearch.Net/NEST to search parent documents based on child attributes, where parent/child documents are stored separately

Question

I would like to use Elasticsearch.Net/NEST to search related documents. For example, I have:

Person:

id name address_id
-- ---- ----------
1  John 1
2  Mary         


        

Answer 1

Here's a small snippet where the address is the parent

EDIT: Create the index:

var indicesOperationResponse = _client.CreateIndex(ci => ci.Index("test")
            .AddMapping
(m => m.MapFromAttributes())
            .AddMapping(m => m.MapFromAttributes().SetParent
()));

Index documents:

var bulkResponse = _client.Bulk(b => b
            .Index
(bd => bd.Object(new Address { Name = "Tel Aviv", Id = 1 }).Index("test"))
            .Index(bd => bd.Index("test").Object(new Person {Id = 5, Address = 1, Name = "Me"}).Parent(1)));

And search by parent

var searchResponse = _client.Search(s => s
        .Query(q=>q.MatchAll())
        .Filter(q => q
            .HasParent
(c => c
                .Query(cq => cq.Match(m=>m.OnField(t => t.Name).Query("Tel Aviv"))))));