Distance Threshold Does Not Work Without Specifying Either ID or Vector Query

[robert-toh]

I'm currently working on a hybrid search and want to filter out irrelevant results using the distance threshold parameter.

According to the Typesense docs (https://typesense.org/docs/29.0/api/vector-search.html#distance-threshold) you shouldn't need either the id parameter or a vector query.

However, if I try to create a VectorQuery using that above pattern, I get the validation error below

Line 89

typesense-dotnet/src/Typesense/VectorSearchQuery.cs

Lines 80 to 103 in f524cad

	public VectorQuery(float[] vector, string vectorFieldName, string? id = null, int? k = null, int? flatSearchCutoff = null, Dictionary<string, string>? extraParams = null, decimal? distanceThreshold = null)
	{
	ArgumentNullException.ThrowIfNull(vector);
	if (vector.Length > 0 && id != null)
	throw new ArgumentException(
	"Malformed vector query string: cannot pass both vector query and `id` parameter.");
	if (vector.Length == 0 && id is null)
	throw new ArgumentException("When a vector query value is empty, an `id` parameter must be present.");
	if (string.IsNullOrWhiteSpace(vectorFieldName))
	throw new ArgumentException(
	"The vector fieldname cannot be null or whitespace.",
	nameof(vectorFieldName));
	_vector = vector;
	VectorFieldName = vectorFieldName;
	Id = id;
	K = k;
	DistanceThreshold = distanceThreshold;
	FlatSearchCutoff = flatSearchCutoff;
	ExtraParams = extraParams ?? new();
	}

Is this behavior intended?

[runeanielsen]

Hi @robert-toh,

You are welcome to remove them, I do not know if they were required before another contributor implemented this.

// Rune