import type { ClearDatabaseOptions, DropSchemaOptions, EntityMetadata, ISchemaGenerator, UpdateSchemaOptions, CreateSchemaOptions, RefreshDatabaseOptions, EnsureDatabaseOptions } from '../typings.js';
import { type EntityManagerType, type IDatabaseDriver } from '../drivers/IDatabaseDriver.js';
import type { MetadataStorage } from '../metadata/MetadataStorage.js';
import type { Configuration } from './Configuration.js';
export declare abstract class AbstractSchemaGenerator<D extends IDatabaseDriver> implements ISchemaGenerator {
    protected readonly em?: D[typeof EntityManagerType];
    protected readonly driver: D;
    protected readonly config: Configuration;
    protected readonly metadata: MetadataStorage;
    protected readonly platform: ReturnType<D['getPlatform']>;
    protected readonly connection: ReturnType<D['getConnection']>;
    constructor(em: D | D[typeof EntityManagerType]);
    create(options?: CreateSchemaOptions): Promise<void>;
    /**
     * Returns true if the database was created.
     */
    ensureDatabase(options?: EnsureDatabaseOptions): Promise<boolean>;
    refresh(options?: RefreshDatabaseOptions): Promise<void>;
    clear(options?: ClearDatabaseOptions): Promise<void>;
    protected clearIdentityMap(): void;
    getCreateSchemaSQL(options?: CreateSchemaOptions): Promise<string>;
    drop(options?: DropSchemaOptions): Promise<void>;
    getDropSchemaSQL(options?: Omit<DropSchemaOptions, 'dropDb'>): Promise<string>;
    update(options?: UpdateSchemaOptions): Promise<void>;
    getUpdateSchemaSQL(options?: UpdateSchemaOptions): Promise<string>;
    getUpdateSchemaMigrationSQL(options?: UpdateSchemaOptions): Promise<{
        up: string;
        down: string;
    }>;
    /**
     * creates new database and connects to it
     */
    createDatabase(name?: string): Promise<void>;
    dropDatabase(name?: string): Promise<void>;
    execute(query: string): Promise<void>;
    ensureIndexes(): Promise<void>;
    protected getOrderedMetadata(schema?: string): EntityMetadata[];
    protected notImplemented(): never;
}