/// <reference types="zen-observable" />
import { DeepPartial } from "../common/DeepPartial";
import { ObjectType } from "../common/ObjectType";
import { Connection } from "../connection/Connection";
import { ObjectID } from "../driver/mongodb/typings";
import { FindExtraOptions, FindOptions, FindOptionsWhere } from "../index";
import { DeleteResult } from "../query-builder/result/DeleteResult";
import { InsertResult } from "../query-builder/result/InsertResult";
import { UpdateResult } from "../query-builder/result/UpdateResult";
import { SelectQueryBuilder } from "../query-builder/SelectQueryBuilder";
import { RemoveOptions } from "./RemoveOptions";
import { Repository } from "./Repository";
import { SaveOptions } from "./SaveOptions";
import Observable = require("zen-observable");
/**
 * Base abstract entity for all entities, used in ActiveRecord patterns.
 */
export declare class BaseEntity {
    /**
     * Connection used in all static methods of the BaseEntity.
     */
    private static usedConnection?;
    /**
     * Checks if entity has an id.
     * If entity composite compose ids, it will check them all.
     */
    hasId(): boolean;
    /**
     * Saves current entity in the database.
     * If entity does not exist in the database then inserts, otherwise updates.
     */
    save(): Promise<this>;
    /**
     * Removes current entity from the database.
     */
    remove(): Promise<this>;
    /**
     * Reloads entity data from the database.
     */
    reload(): Promise<void>;
    /**
     * Sets connection to be used by entity.
     */
    static useConnection(connection: Connection): void;
    /**
     * Gets current entity's Repository.
     */
    static getRepository<T extends BaseEntity>(this: ObjectType<T>): Repository<T>;
    /**
     * Returns object that is managed by this repository.
     * If this repository manages entity from schema,
     * then it returns a name of that schema instead.
     */
    static readonly target: Function | string;
    /**
     * Checks entity has an id.
     * If entity composite compose ids, it will check them all.
     */
    static hasId(entity: BaseEntity): boolean;
    /**
     * Gets entity mixed id.
     */
    static getId<T extends BaseEntity>(this: ObjectType<T>, entity: T): any;
    /**
     * Creates a new query builder that can be used to build a sql query.
     */
    static createQueryBuilder<T extends BaseEntity>(this: ObjectType<T>, alias?: string): SelectQueryBuilder<T>;
    /**
     * Creates a new entity instance.
     */
    static create<T extends BaseEntity>(this: ObjectType<T>): T;
    /**
     * Creates a new entities and copies all entity properties from given objects into their new entities.
     * Note that it copies only properties that present in entity schema.
     */
    static create<T extends BaseEntity>(this: ObjectType<T>, entityLikeArray: DeepPartial<T>[]): T;
    /**
     * Creates a new entity instance and copies all entity properties from this object into a new entity.
     * Note that it copies only properties that present in entity schema.
     */
    static create<T extends BaseEntity>(this: ObjectType<T>, entityLike: DeepPartial<T>): T;
    /**
     * Merges multiple entities (or entity-like objects) into a given entity.
     */
    static merge<T extends BaseEntity>(this: ObjectType<T>, mergeIntoEntity: T, ...entityLikes: DeepPartial<T>[]): T;
    /**
     * Creates a new entity from the given plan javascript object. If entity already exist in the database, then
     * it loads it (and everything related to it), replaces all values with the new ones from the given object
     * and returns this new entity. This new entity is actually a loaded from the db entity with all properties
     * replaced from the new object.
     *
     * Note that given entity-like object must have an entity id / primary key to find entity by.
     * Returns undefined if entity with given id was not found.
     */
    static preload<T extends BaseEntity>(this: ObjectType<T>, entityLike: DeepPartial<T>): Promise<T | undefined>;
    /**
     * Saves all given entities in the database.
     * If entities do not exist in the database then inserts, otherwise updates.
     */
    static save<T extends BaseEntity>(this: ObjectType<T>, entities: T[], options?: SaveOptions): Promise<T[]>;
    /**
     * Saves a given entity in the database.
     * If entity does not exist in the database then inserts, otherwise updates.
     */
    static save<T extends BaseEntity>(this: ObjectType<T>, entity: T, options?: SaveOptions): Promise<T>;
    /**
     * Removes a given entities from the database.
     */
    static remove<T extends BaseEntity>(this: ObjectType<T>, entities: T[], options?: RemoveOptions): Promise<T[]>;
    /**
     * Removes a given entity from the database.
     */
    static remove<T extends BaseEntity>(this: ObjectType<T>, entity: T, options?: RemoveOptions): Promise<T>;
    /**
     * Inserts a given entity into the database.
     * Unlike save method executes a primitive operation without cascades, relations and other operations included.
     * Executes fast and efficient INSERT query.
     * Does not check if entity exist in the database, so query will fail if duplicate entity is being inserted.
     */
    static insert<T extends BaseEntity>(this: ObjectType<T>, entity: DeepPartial<T> | DeepPartial<T>[], options?: SaveOptions): Promise<InsertResult>;
    /**
     * Updates entity partially. Entity can be found by a given conditions.
     * Unlike save method executes a primitive operation without cascades, relations and other operations included.
     * Executes fast and efficient UPDATE query.
     * Does not check if entity exist in the database.
     */
    static update<T extends BaseEntity>(this: ObjectType<T>, criteria: string | string[] | number | number[] | Date | Date[] | ObjectID | ObjectID[] | FindOptionsWhere<T>, partialEntity: DeepPartial<T>, options?: SaveOptions): Promise<UpdateResult>;
    /**
     * Deletes entities by a given criteria.
     * Unlike save method executes a primitive operation without cascades, relations and other operations included.
     * Executes fast and efficient DELETE query.
     * Does not check if entity exist in the database.
     */
    static delete<T extends BaseEntity>(this: ObjectType<T>, criteria: string | string[] | number | number[] | Date | Date[] | ObjectID | ObjectID[] | FindOptionsWhere<T>, options?: RemoveOptions): Promise<DeleteResult>;
    /**
     * Counts entities that match given conditions.
     */
    static count<T extends BaseEntity>(this: ObjectType<T>, conditions?: FindOptionsWhere<T>, options?: FindExtraOptions): Promise<number>;
    /**
     * Finds entities that match given options.
     */
    static find<T extends BaseEntity>(this: ObjectType<T>, options?: FindOptions<T>): Promise<T[]>;
    /**
     * Finds entities that match given conditions.
     */
    static find<T extends BaseEntity>(this: ObjectType<T>, conditions?: FindOptionsWhere<T>): Promise<T[]>;
    /**
     * Finds entities that match given find options.
     * Also counts all entities that match given conditions,
     * but ignores pagination settings (from and take options).
     */
    static findAndCount<T extends BaseEntity>(this: ObjectType<T>, options?: FindOptions<T>): Promise<[T[], number]>;
    /**
     * Finds entities that match given conditions.
     * Also counts all entities that match given conditions,
     * but ignores pagination settings (from and take options).
     */
    static findAndCount<T extends BaseEntity>(this: ObjectType<T>, conditions?: FindOptionsWhere<T>): Promise<[T[], number]>;
    /**
     * Finds entities by ids.
     * Optionally find options can be applied.
     */
    static findByIds<T extends BaseEntity>(this: ObjectType<T>, ids: any[], options?: FindOptions<T>): Promise<T[]>;
    /**
     * Finds entities by ids.
     * Optionally conditions can be applied.
     */
    static findByIds<T extends BaseEntity>(this: ObjectType<T>, ids: any[], conditions?: FindOptionsWhere<T>): Promise<T[]>;
    /**
     * Finds first entity that matches given options.
     */
    static findOne<T extends BaseEntity>(this: ObjectType<T>, id?: string | number | Date | ObjectID, options?: FindOptions<T>): Promise<T | undefined>;
    /**
     * Finds first entity that matches given options.
     */
    static findOne<T extends BaseEntity>(this: ObjectType<T>, options?: FindOptions<T>): Promise<T | undefined>;
    /**
     * Finds first entity that matches given conditions.
     */
    static findOne<T extends BaseEntity>(this: ObjectType<T>, conditions?: FindOptionsWhere<T>, options?: FindOptions<T>): Promise<T | undefined>;
    /**
     * Finds first entity that matches given options.
     */
    static findOneOrFail<T extends BaseEntity>(this: ObjectType<T>, id?: string | number | Date | ObjectID, options?: FindOptions<T>): Promise<T>;
    /**
     * Finds first entity that matches given options.
     */
    static findOneOrFail<T extends BaseEntity>(this: ObjectType<T>, options?: FindOptions<T>): Promise<T>;
    /**
     * Finds first entity that matches given conditions.
     */
    static findOneOrFail<T extends BaseEntity>(this: ObjectType<T>, conditions?: DeepPartial<T>, options?: FindOptions<T>): Promise<T>;
    /**
     * Finds entities that match given options and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observe<Entity>(options?: FindOptions<Entity>): Observable<Entity[]>;
    /**
     * Finds entities that match given conditions and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observe<Entity>(conditions?: FindOptionsWhere<Entity>): Observable<Entity[]>;
    /**
     * Finds entities and count that match given options and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeManyAndCount<Entity>(options?: FindOptions<Entity>): Observable<[Entity[], number]>;
    /**
     * Finds entities and count that match given conditions and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeManyAndCount<Entity>(conditions?: FindOptionsWhere<Entity>): Observable<[Entity[], number]>;
    /**
     * Finds entity that match given options and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeOne<Entity>(options?: FindOptions<Entity>): Observable<Entity>;
    /**
     * Finds entity that match given conditions and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeOne<Entity>(conditions?: FindOptionsWhere<Entity>): Observable<Entity>;
    /**
     * Gets the entities count match given options and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeCount<Entity>(options?: FindOptions<Entity>): Observable<number>;
    /**
     * Gets the entities count match given options and returns observable.
     * Whenever new data appears that matches given query observable emits new value.
     */
    static observeCount<Entity>(conditions?: FindOptionsWhere<Entity>): Observable<number>;
    /**
     * Executes a raw SQL query and returns a raw database results.
     * Raw query execution is supported only by relational databases (MongoDB is not supported).
     */
    static query<T extends BaseEntity>(this: ObjectType<T>, query: string, parameters?: any[]): Promise<any>;
    /**
     * Clears all the data from the given table/collection (truncates/drops it).
     */
    static clear<T extends BaseEntity>(this: ObjectType<T>): Promise<void>;
}