export interface SparnaturalQueryIfc {
    distinct?: boolean;
    variables: Array<VariableTerm | VariableExpression>;
    order?: Order;
    branches: Array<Branch>;
    limit?: number;
    metadata?: {
        id?: string;
        lang?: string;
        label?: {
            [key: string]: string;
        };
        description?: {
            [key: string]: string;
        };
        [key: string]: any;
    };
}
export interface Branch {
    line: CriteriaLine;
    children: Array<Branch> | [];
    optional?: boolean;
    notExists?: boolean;
}
export interface VariableTerm {
    termType: "Variable";
    value: string;
}
export interface VariableExpression {
    expression: {
        type: "aggregate";
        aggregation: string;
        distinct: boolean;
        expression: VariableTerm;
    };
    variable: VariableTerm;
}
export interface CriteriaLine {
    s: string;
    p: string;
    o: string;
    sType: string;
    oType: string;
    values: {
        label: string;
    }[];
}
export declare enum Order {
    ASC = "asc",
    DESC = "desc",
    NOORDER = "noord"
}
export declare enum AggregateFunction {
    COUNT = "count",
    MAX = "max",
    MIN = "min",
    SUM = "sum",
    GROUP_CONCAT = "group_concat",
    SAMPLE = "sample",
    AVG = "avg"
}