How Hornet Uses Metadata Indexing to Help Users Find the Perfect Match

async function findWithinRadiusUsingText(
    text: string, k: number, radius: number, lat: number, lon: number
): Promise<Amenity[]> {
    const vectorStore = await astra.getVectorStore();

    const filter = { 
        name: "GEO_DISTANCE(coords,?)",
        operator: "<=",
        value: [new Float32Array([lat, lon]), radius] 
    };

    const results = await vectorStore.similaritySearchWithScore(text, k, filter);

    const documents = results.map(result => result[0]);
    const scores = results.map(result => result[1]);

    const amenitiesMap = processAmenityResults(documents, scores);

    return Array.from(amenitiesMap.values());
}