import { AttributeFilter, DocumentAttribute, DocumentAttributeValue, KendraClient, KendraClientConfig, QueryCommandOutput, QueryResultItem, RetrieveCommandOutput, RetrieveResultItem } from "@aws-sdk/client-kendra";
import { BaseRetriever } from "../schema/retriever.js";
import { Document } from "../document.js";
export interface AmazonKendraRetrieverArgs {
    indexId: string;
    topK: number;
    region: string;
    attributeFilter?: AttributeFilter;
    clientOptions?: KendraClientConfig;
}
export declare class AmazonKendraRetriever extends BaseRetriever {
    lc_namespace: string[];
    indexId: string;
    topK: number;
    kendraClient: KendraClient;
    attributeFilter?: AttributeFilter;
    constructor({ indexId, topK, clientOptions, attributeFilter, region, }: AmazonKendraRetrieverArgs);
    combineText(title?: string, excerpt?: string): string;
    cleanResult(resText: string): string;
    getDocAttributeValue(value: DocumentAttributeValue): string | number | string[] | Date;
    getDocAttributes(documentAttributes?: DocumentAttribute[]): {
        [key: string]: unknown;
    };
    convertRetrieverItem(item: RetrieveResultItem): Document<{
        source: string | undefined;
        title: string;
        excerpt: string;
        document_attributes: {
            [key: string]: unknown;
        };
    }>;
    getRetrieverDocs(response: RetrieveCommandOutput, pageSize: number): Document[];
    getQueryItemExcerpt(item: QueryResultItem): string;
    convertQueryItem(item: QueryResultItem): Document<{
        source: string | undefined;
        title: string;
        excerpt: string;
        document_attributes: {
            [key: string]: unknown;
        };
    }>;
    getQueryDocs(response: QueryCommandOutput, pageSize: number): Document<{
        source: string | undefined;
        title: string;
        excerpt: string;
        document_attributes: {
            [key: string]: unknown;
        };
    }>[];
    queryKendra(query: string, topK: number, attributeFilter?: AttributeFilter): Promise<Document<Record<string, any>>[] | Document<{
        source: string | undefined;
        title: string;
        excerpt: string;
        document_attributes: {
            [key: string]: unknown;
        };
    }>[]>;
    _getRelevantDocuments(query: string): Promise<Document[]>;
}