import { AnyObject, juggler } from '@loopback/repository';
import { ColumnSchema, DatabaseSchema, IDbConnector, QueryParam } from '../../types';
import { IAuthUserWithPermissions } from '@sourceloop/core';
export declare class PgConnector implements IDbConnector {
    protected readonly db: juggler.DataSource;
    protected readonly user?: IAuthUserWithPermissions | undefined;
    protected readonly defaultConditions?: AnyObject | undefined;
    protected operatorMap: Record<string, string>;
    constructor(db: juggler.DataSource, user?: IAuthUserWithPermissions | undefined, defaultConditions?: AnyObject | undefined);
    execute<T>(query: string, limit?: number, offset?: number, params?: QueryParam[]): Promise<T[]>;
    validate(query: string): Promise<void>;
    toDDL(dbSchema: DatabaseSchema): string;
    protected _execute(query: string, params?: QueryParam[]): Promise<any>;
    private _addTable;
    protected mapDbTypeToColumnType(dbType: string): string;
    protected mapColumnToDbType(name: string, column: ColumnSchema): string;
    /**
     * Clean a SQL query by removing trailing semicolons and comments
     * @param query - The SQL query to clean
     * @returns The cleaned SQL query
     */
    private _cleanQuery;
}