import { DbTable } from '../models/structure/db-table.model';
import { DbHelperModel } from '../models/db-helper-model.model';
import { DataModel } from '../models/structure/data-model.model';
/**
 * @private
 * @class ModelManager
 *
 * @description
 * This class is a singleton collecting data model
 * This manager has not to be exposed, it is used to provide DataModel
 * every time it is necessary
 *
 * @author  Olivier Margarit
 * @since   0.1
 */
export declare class ModelManager {
    /**
     * @static
     * @public
     * @property {string} version the current data model version, this is provided by the
     * module configuration, @see NgDbHelperModuleConfig
     */
    static version: string;
    /**
     * @static
     * @private
     * @property {ModelManager} instance private reference to the model manager instance
     */
    private static instance;
    /**
     * @private
     * @property {{[index: string]: DbTable}} tables hashmap of table names to their datamodel
     */
    private tables;
    /**
     * @private
     * @property {{[index: string]: string}} models hashmap of model names with theirs linked table name
     */
    private models;
    /**
     * @static
     * @public
     * @method getInstance methode that return the manager instance
     *
     * @return {ModelManager} the unique instance
     */
    static getInstance(): ModelManager;
    /**
     * @public
     * @method addModel this method is part of private API, it is called by
     * decorator to add new table to model
     *
     * @param {DbTable} dbTable newModel model extending DbHelperModel
     */
    addModel(dbTable: DbTable): void;
    /**
     * @public
     * @method getColumnNameForField is a part of the private API
     * This method is called by column decorators to add field to
     * the Ddate model tables
     *
     * @param {{new(): DbHelperModel}} model    model extending DbHelperModel
     * @param {string} fieldName                field to add to the model table
     *
     * @return {string} the column name for field "fieldName" of the model "model"
     */
    getColumnNameForField(model: {
        new (): DbHelperModel;
    }, fieldName: string): string;
    /**
     * @public
     * @method getDataModel get datamodel for model migrations
     *
     * @return {DataModel} data model generated by decorators
     */
    getDataModel(): DataModel;
    /**
     * @public
     * @method getModelCount return the number of model with decorators
     * This method is used to comput minor version of the DataModel to automigrate
     * the model. The feature is deactivable from config.
     *
     * @return {number} the number of table
     */
    getModelCount(): number;
    /**
     * @public
     * @method getModel this is a private API to get model and use it to build queries
     *
     * @param {string | DbHelperModel | {new(): DbHelperModel }} model reference to the model
     *
     * @return {DbTable} the table declared for the model
     */
    getModel(model: string | DbHelperModel | {
        new (): DbHelperModel;
    }): DbTable;
    /**
     * @public
     * @method getTables return the table name linked to the model
     *
     * @param {{new(): DbHelperModel}} model model extending DbHelperModel
     *
     * @return {string} table name
     */
    getTable(model: {
        new (): DbHelperModel;
    }): string;
}