ravendb index across multiple nested properties

Question

I am asking how to create an index based upon two different nested properties on an document. I am executing these queries through C#.

public class LocationCode
{
    public string Code {get;set;}
    public string SeqId {get;set;}
}

public class ColorCode
{
    public string Code {get;set;}
    public string SeqId {get;set;}
}

public class TestDocument
{
    public int Id {get;set;}
    public List<LocationCode> Locations { get; set; }
    public List<ColorCode> Colors { get; set; }
}

I have experimented with various AbstractIndexCreationTask, Map, and Map+Reduce, but to no avail.

I would like to be able to do a query such as:

Get all documents where any Locations.Code property is "USA", AND/OR Colors.Code="RED", or on the SeqId property. I dont know whether this would mean I need multiple indexes. Normally I would either be comparing the Code property on both nested classes, or the Seq, but never mixed.

Please could someone point me in the right direction.

Many thanks Phil

Answer 1

Create your index like this:

public class TestIndex : AbstractIndexCreationTask<TestDocument, TestIndex.IndexEntry>
{
    public class IndexEntry
    {
        public IList<string> LocationCodes { get; set; }
        public IList<string> ColorCodes { get; set; }
    }

    public TestIndex()
    {
        Map = testDocs =>
            from testDoc in testDocs
            select new
            {
                LocationCodes = testDoc.Locations.Select(x=> x.Code),
                ColorCodes = testDoc.Colors.Select(x=> x.Code)
            };
    }
}

Then query it like this:

var q = session.Query<TestIndex.IndexEntry, TestIndex>()
    .Where(x => x.LocationCodes.Any(y => y == "USA") &&
                x.ColorCodes.Any(y => y == "RED"))
    .OfType<TestDocument>();

Full unit test here.