import { ColumnType } from "../../Common/ColumnType";
import { GenericType } from "../../Common/Type";
import { IColumnOption } from "../../Decorator/Option/IColumnOption";
import { IEntityMetaData } from "../Interface/IEntityMetaData";
import { FunctionExpression } from "../../ExpressionBuilder/Expression/FunctionExpression";
import { IColumnMetaData } from "../Interface/IColumnMetaData";
export declare class InheritedColumnMetaData<TE extends TP = any, TP = any, T = any> implements IColumnMetaData<TE, T> {
    entity: IEntityMetaData<TE>;
    parentColumnMetaData: IColumnMetaData<TP, T>;
    readonly columnName: string;
    readonly propertyName: keyof TP;
    readonly nullable: boolean;
    readonly defaultExp: FunctionExpression<T>;
    readonly description: string;
    readonly columnType: ColumnType;
    readonly type: GenericType<T>;
    readonly collation: string;
    readonly charset: string;
    readonly parentEntity: IEntityMetaData<TP>;
    constructor(entity: IEntityMetaData<TE>, parentColumnMetaData: IColumnMetaData<TP, T>);
    /**
     * Copy
     */
    applyOption(columnMeta: IColumnOption<TE>): void;
}