import { P_COLUMN_REFERENCE_ON, ColumnReferenceOnInterface } from '../../../../typings';
import { ColumnReferenceOnModelInterface } from './typings';
/**
 * Column reference's 'on' triggers of column actions.
 */
export declare class ColumnReferenceOn implements ColumnReferenceOnModelInterface {
    trigger: string;
    action: string;
    /**
     * Creates column reference "on" trigger from object.
     * Object must contain properties 'trigger' and 'action'.
     *
     * @param json JSON format parsed from SQL.
     */
    static fromObject(json: P_COLUMN_REFERENCE_ON): ColumnReferenceOn;
    /**
     * JSON casting of this object calls this method.
     */
    toJSON(): ColumnReferenceOnInterface;
    /**
     * Create a deep clone of this model.
     */
    clone(): ColumnReferenceOn;
}