import Tuple from '../Tuple';
import SchemaProviderAPI from '../generated/SchemaProviderAPI';
import Graph from '../Graph';
export declare class ColumnType {
    name: string;
    sortPriority: number;
    constructor(name: string, sortPriority: number);
}
export declare const ViewColumn: ColumnType;
export declare const ObjectColumn: ColumnType;
export declare const ValueColumn: ColumnType;
export declare class Column {
    name: string;
    type: ColumnType;
    constructor(name: string);
}
export default class Schema {
    constructor();
    setupBuiltinViews(graph: Graph): void;
    columns: {
        [name: string]: Column;
    };
    initColumn(name: string): Column;
    beforeSave(relation: Tuple): void;
    checkTagsClassification(relation: Tuple): void;
    getProvider(): SchemaProviderAPI;
}