Querying array of strings by array of strings in elasticsearch.net

Question

I\'m using elasticsearch.net library in C# and I\'m trying to query for objects matching specified filter.

I would like the query to return objects where at least one o

Answer 1

I think that your problem is that you tries to pass whole array to query. Instead of that you should treat that as OR expression.

Below is the raw query that you should use:

{
    "query": {
        "bool": {
            "should": [
                { "term": {"names": "test" } },
                { "term": {"names": "xyz" } }
            ]
        }
    }
}

And that the C# code to achive that. First I have defined helper function:

private static QueryContainer TermAny(QueryContainerDescriptor descriptor, Field field, object[] values) where T : class
{
    QueryContainer q = new QueryContainer();
    foreach (var value in values)
    {
        q |= descriptor.Term(t => t.Field(field).Value(value));
    }
    return q;
}

And now the query:

string[] values = new[] { "test", "xyz" };
client.Search(x => x.Query(
    q => q.Bool(
        b => b.Should(s => TermAny(s, "names", values)))));