import { Driver } from "../Driver";
import { ObjectLiteral } from "../../common/ObjectLiteral";
import { ColumnMetadata } from "../../metadata/ColumnMetadata";
import { PostgresQueryRunner } from "./PostgresQueryRunner";
import { Connection } from "../../connection/Connection";
import { RdbmsSchemaBuilder } from "../../schema-builder/RdbmsSchemaBuilder";
import { PostgresConnectionOptions } from "./PostgresConnectionOptions";
import { MappedColumnTypes } from "../types/MappedColumnTypes";
import { ColumnType } from "../types/ColumnTypes";
import { QueryRunner } from "../../query-runner/QueryRunner";
import { DataTypeDefaults } from "../types/DataTypeDefaults";
import { TableColumn } from "../../schema-builder/table/TableColumn";
import { PostgresConnectionCredentialsOptions } from "./PostgresConnectionCredentialsOptions";
import { EntityMetadata } from "../../metadata/EntityMetadata";
export declare class PostgresDriver implements Driver {
    connection: Connection;
    postgres: any;
    master: any;
    slaves: any[];
    connectedQueryRunners: QueryRunner[];
    options: PostgresConnectionOptions;
    database?: string;
    isReplicated: boolean;
    treeSupport: boolean;
    supportedDataTypes: ColumnType[];
    spatialTypes: ColumnType[];
    withLengthColumnTypes: ColumnType[];
    withPrecisionColumnTypes: ColumnType[];
    withScaleColumnTypes: ColumnType[];
    mappedDataTypes: MappedColumnTypes;
    dataTypeDefaults: DataTypeDefaults;
    constructor(connection: Connection);
    connect(): Promise<void>;
    afterConnect(): Promise<void>;
    disconnect(): Promise<void>;
    createSchemaBuilder(): RdbmsSchemaBuilder;
    createQueryRunner(mode?: "master" | "slave"): PostgresQueryRunner;
    preparePersistentValue(value: any, columnMetadata: ColumnMetadata): any;
    prepareHydratedValue(value: any, columnMetadata: ColumnMetadata): any;
    escapeQueryWithParameters(sql: string, parameters: ObjectLiteral, nativeParameters: ObjectLiteral): [string, any[]];
    escape(columnName: string): string;
    buildTableName(tableName: string, schema?: string): string;
    normalizeType(column: {
        type?: ColumnType;
        length?: number | string;
        precision?: number | null;
        scale?: number;
        isArray?: boolean;
    }): string;
    normalizeDefault(columnMetadata: ColumnMetadata): string;
    normalizeIsUnique(column: ColumnMetadata): boolean;
    getColumnLength(column: ColumnMetadata): string;
    createFullType(column: TableColumn): string;
    obtainMasterConnection(): Promise<any>;
    obtainSlaveConnection(): Promise<any>;
    createGeneratedMap(metadata: EntityMetadata, insertResult: ObjectLiteral): ObjectLiteral | undefined;
    findChangedColumns(tableColumns: TableColumn[], columnMetadatas: ColumnMetadata[]): ColumnMetadata[];
    isReturningSqlSupported(): boolean;
    isUUIDGenerationSupported(): boolean;
    createParameter(parameterName: string, index: number): string;
    loadStreamDependency(): any;
    protected loadDependencies(): void;
    protected createPool(options: PostgresConnectionOptions, credentials: PostgresConnectionCredentialsOptions): Promise<any>;
    protected closePool(pool: any): Promise<void>;
    protected executeQuery(connection: any, query: string): Promise<{}>;
}