import { Class } from '@midway3-components/core';
import { Column as DrizzleColumn, SQL } from 'drizzle-orm';
import { Drizzle } from '../drizzle';
import type { From, JoinType } from '../query';
import { OnLoadCallback } from './onLoad';
type Join = {
    type?: JoinType;
    from: From;
    on: SQL;
};
type BaseEntity = object;
export type EntityClass<T extends BaseEntity = any> = Class<T, []>;
export type EntityOptions<T = any> = {
    joins?: Join[];
    onLoad?: OnLoadCallback<T>;
    dataSource?: Drizzle | string;
};
type EntityMeta = {
    from: From;
    options?: EntityOptions;
};
export declare function Entity<T extends BaseEntity = any>(from: From, options?: EntityOptions<T>): ClassDecorator;
export declare function isEntityClass(clz: Class): boolean;
export declare function getEntityMeta(clz: Class): EntityMeta | null;
type ReadValue<T> = (val: any, key: string | symbol, entity: T) => unknown;
export type ColumnOptions<T = any> = {
    nullValue?: unknown;
    readValue?: ReadValue<T>;
};
type ColumnMeta = {
    column: EntityColumn;
    propertyKey: string;
    options?: ColumnOptions;
};
type EntityColumn = DrizzleColumn | SQL;
export declare function Column<T extends BaseEntity = any>(column: EntityColumn, options?: ColumnOptions<T>): PropertyDecorator;
export declare function Column<T extends BaseEntity = any>(column: EntityColumn, readValue: ReadValue<T>): PropertyDecorator;
export declare function getColumnsMeta(clz: Class): ColumnMeta[];
export declare function getEntityDefinition(clz: Class): {
    columns: ColumnMeta[];
    from: From;
    options?: EntityOptions;
};
export {};
//# sourceMappingURL=entity.d.ts.map