def get_solr_vector_search(bert_client, query):
    """
    Takes user keyword query, computes BERT embedding and returns a
    comma-separated string with vector points
    :param bert_client: used for computing BERT embedding
    :param query: user keyword query
    :return: CSV string suitable for querying in Solr
    """
    return ','.join(str(elem) for elem in bert_client.encode([query]).flat)