import { Stream } from "../../common/util/Stream";
import { Rule } from "./Rule";
/** Provides methods for manipulating rules in the database. */
export interface LogicManager {
    /**
     * Retrieves the Rule that has the given label.
     *
     * ### Examples
     *
     * ```ts
     * transaction.logic.getRule(label)
     * ```
     *
     * @param label - The label of the Rule to create or retrieve
     */
    getRule(label: string): Promise<Rule | undefined>;
    /**
     * Retrieves all rules.
     *
     * ### Examples
     *
     * ```ts
     * transaction.logic.getRules()
     * ```
     */
    getRules(): Stream<Rule>;
    /**
     * Creates a new Rule if none exists with the given label, or replaces the existing one.
     *
     * ### Examples
     *
     * ```ts
     * transaction.logic.putRule(label, when, then)
     * ```
     *
     * @param label - The label of the Rule to create or replace
     * @param when - The when body of the rule to create
     * @param then - The then body of the rule to create
     */
    putRule(label: string, when: string, then: string): Promise<Rule>;
}