@langchain/community
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Third-party integrations for LangChain.js
36 lines (35 loc) • 1.32 kB
TypeScript
import { PoolConfig, Pool } from "pg";
import { ListKeyOptions, RecordManagerInterface, UpdateOptions } from "./base.js";
export type PostgresRecordManagerOptions = {
postgresConnectionOptions: PoolConfig;
pool?: Pool;
tableName?: string;
schema?: string;
};
export declare class PostgresRecordManager implements RecordManagerInterface {
lc_namespace: string[];
pool: Pool;
tableName: string;
namespace: string;
finalTableName: string;
constructor(namespace: string, config: PostgresRecordManagerOptions);
createSchema(): Promise<void>;
getTime(): Promise<number>;
/**
* Generates the SQL placeholders for a specific row at the provided index.
*
* @param index - The index of the row for which placeholders need to be generated.
* @param numOfColumns - The number of columns we are inserting data into.
* @returns The SQL placeholders for the row values.
*/
private generatePlaceholderForRowAt;
update(keys: string[], updateOptions?: UpdateOptions): Promise<void>;
exists(keys: string[]): Promise<boolean[]>;
listKeys(options?: ListKeyOptions): Promise<string[]>;
deleteKeys(keys: string[]): Promise<void>;
/**
* Terminates the connection pool.
* @returns {Promise<void>}
*/
end(): Promise<void>;
}