import { LabelGroupingConfig, LabelGroupingOrJoinType } from './label-grouping-config';
/**
 * Describes an extended join configuration.
 *
 * Use the static methods of the `Join` class to create objects that conform to this interface.
 */
export interface JoinConfig extends LabelGroupingConfig {
    /** Optional configuration for one-to-many and many-to-one joins. */
    grouping?: JoinGrouping;
    /** Optional list of additional labels from the one side on one-to-many and many-to-one joins. */
    additionalLabelsFromOneSide?: string[];
}
/**
 * Determines to determine which side is the many side in one-to-many and many-to-one join operations
 */
export declare enum JoinGrouping {
    /** The left side is the `many` side. */
    Left = "groupLeft",
    /** The right side is the `many` side. */
    Right = "groupRight"
}
/**
 * Helper class for configuring `JoinConfig` objects.
 */
export declare class Join implements JoinConfig {
    labelUsageType: LabelGroupingOrJoinType;
    labels?: string[];
    /**
     * Creates a new `Join` configuration where the join will occur on the specified `labels`.
     *
     * The returned object supports further configuration through the `groupLeft()` and `groupRight()` methods.
     *
     * @param labels The labels to join on.
     */
    static onLabels(...labels: string[]): Join;
    /**
     * Creates a new `Join` configuration where the join will occur on the all labels, except for the specified `labels`.
     *
     * The returned object supports further configuration through the `groupLeft()` and `groupRight()` methods.
     *
     * @param labels The labels to exclude from the join operation.
     */
    static ignoringLabels(...labels: string[]): Join;
    /**
     * Configures a many-to-one join, i.e., the left side is the `many` side, without any on/ignoring part.
     *
     * @param additionalLabelsFromRightSide (optional) Additional labels from the right side that should be considered.
     */
    static groupLeft(...additionalLabelsFromRightSide: string[]): JoinConfig;
    /**
     * Configures a one-to-many join, i.e., the right side is the `many` side, without any on/ignoring part.
     *
     * @param additionalLabelsFromLeftSide (optional) Additional labels from the left side that should be considered.
     */
    static groupRight(...additionalLabelsFromLeftSide: string[]): JoinConfig;
    protected constructor(labels: string[], labelUsageType: LabelGroupingOrJoinType);
    /**
     * Configures a many-to-one join, i.e., the left side is the `many` side.
     *
     * @param additionalLabelsFromRightSide (optional) Additional labels from the right side that should be considered.
     */
    groupLeft(...additionalLabelsFromRightSide: string[]): JoinConfig;
    /**
     * Configures a one-to-many join, i.e., the right side is the `many` side.
     *
     * @param additionalLabelsFromLeftSide (optional) Additional labels from the left side that should be considered.
     */
    groupRight(...additionalLabelsFromLeftSide: string[]): JoinConfig;
}