private static DenseVectorIndexOptionsType GetIndexKind()

in Elastic.SemanticKernel.Connectors.Elasticsearch/ElasticsearchVectorStoreCollectionCreateMapping.cs [71:94]

• 22 lines of code
• 2 McCabe index (conditional complexity)

    private static DenseVectorIndexOptionsType GetIndexKind(VectorStoreRecordVectorProperty vectorProperty)
    {
        const string int8HnswIndexKind = "int8_hnsw";
        const string int4HnswIndexKind = "int4_hnsw";
        const string int8FlatIndexKind = "int8_flat";
        const string int4FlatIndexKind = "int4_flat";

        if (vectorProperty.DistanceFunction is null)
        {
            return DenseVectorIndexOptionsType.Int8Hnsw;
        }

        return vectorProperty.IndexKind switch
        {
            IndexKind.Hnsw => DenseVectorIndexOptionsType.Hnsw,
            int8HnswIndexKind => DenseVectorIndexOptionsType.Int8Hnsw,
            int4HnswIndexKind => DenseVectorIndexOptionsType.Int4Hnsw,
            IndexKind.Flat => DenseVectorIndexOptionsType.Flat,
            int8FlatIndexKind => DenseVectorIndexOptionsType.Int8Flat,
            int4FlatIndexKind => DenseVectorIndexOptionsType.Int4Flat,
            _ => throw new InvalidOperationException(
                $"Index kind '{vectorProperty.IndexKind}' for {nameof(VectorStoreRecordVectorProperty)} '{vectorProperty.DataModelPropertyName}' is not supported by the Elasticsearch VectorStore.")
        };
    }