import type { Repository } from "./Repository";
import type { FindOptionsWhere } from "../find-options/FindOptionsWhere";
import type { DeepPartial } from "../common/DeepPartial";
import type { SaveOptions } from "./SaveOptions";
import type { FindOneOptions } from "../find-options/FindOneOptions";
import type { RemoveOptions } from "./RemoveOptions";
import type { FindManyOptions } from "../find-options/FindManyOptions";
import type { DataSource } from "../data-source";
import type { SelectQueryBuilder } from "../query-builder/SelectQueryBuilder";
import type { InsertResult } from "../query-builder/result/InsertResult";
import type { UpdateResult } from "../query-builder/result/UpdateResult";
import type { DeleteResult } from "../query-builder/result/DeleteResult";
import type { ObjectId } from "../driver/mongodb/typings";
import type { QueryDeepPartialEntity } from "../query-builder/QueryPartialEntity";
import type { UpsertOptions } from "./UpsertOptions";
import type { UpdateOptions } from "./UpdateOptions";
import type { EntityTarget } from "../common/EntityTarget";
import type { PickKeysByType } from "../common/PickKeysByType";
/**
 * Base abstract entity for all entities, used in ActiveRecord patterns.
 */
export declare class BaseEntity {
    /**
     * DataSource used in all static methods of the BaseEntity.
     */
    private static dataSource;
    /**
     * 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.
     * @param options
     */
    save(options?: SaveOptions): Promise<this>;
    /**
     * Removes current entity from the database.
     * @param options
     */
    remove(options?: RemoveOptions): Promise<this>;
    /**
     * Records the delete date of current entity.
     * @param options
     */
    softRemove(options?: SaveOptions): Promise<this>;
    /**
     * Recovers a given entity in the database.
     * @param options
     */
    recover(options?: SaveOptions): Promise<this>;
    /**
     * Reloads entity data from the database.
     */
    reload(): Promise<void>;
    /**
     * Sets DataSource to be used by entity.
     * @param dataSource
     */
    static useDataSource(dataSource: DataSource | null): void;
    /**
     * Gets current entity's Repository.
     */
    static getRepository<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity): 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 get target(): EntityTarget<any>;
    /**
     * Checks entity has an id.
     * If entity composite compose ids, it will check them all.
     * @param entity
     */
    static hasId(entity: BaseEntity): boolean;
    /**
     * Gets entity mixed id.
     * @param entity
     */
    static getId<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entity: T): any;
    /**
     * Creates a new query builder that can be used to build a SQL query.
     * @param alias
     */
    static createQueryBuilder<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, alias?: string): SelectQueryBuilder<T>;
    /**
     * Creates a new entity instance.
     */
    static create<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity): 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: {
        new (): T;
    } & typeof BaseEntity, 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: {
        new (): T;
    } & typeof BaseEntity, entityLike: DeepPartial<T>): T;
    /**
     * Merges multiple entities (or entity-like objects) into a given entity.
     * @param mergeIntoEntity
     * @param entityLikes
     */
    static merge<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, mergeIntoEntity: T, ...entityLikes: DeepPartial<T>[]): T;
    /**
     * Creates a new entity from the given plain 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.
     * @param entityLike
     */
    static preload<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, 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: {
        new (): T;
    } & typeof BaseEntity, entities: DeepPartial<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: {
        new (): T;
    } & typeof BaseEntity, entity: DeepPartial<T>, options?: SaveOptions): Promise<T>;
    /**
     * Removes a given entities from the database.
     */
    static remove<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entities: T[], options?: RemoveOptions): Promise<T[]>;
    /**
     * Removes a given entity from the database.
     */
    static remove<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entity: T, options?: RemoveOptions): Promise<T>;
    /**
     * Records the delete date of all given entities.
     */
    static softRemove<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entities: T[], options?: SaveOptions): Promise<T[]>;
    /**
     * Records the delete date of a given entity.
     */
    static softRemove<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entity: T, options?: SaveOptions): 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.
     * @param entity
     */
    static insert<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entity: QueryDeepPartialEntity<T> | QueryDeepPartialEntity<T>[]): 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.
     * @param criteria
     * @param partialEntity
     * @param options
     */
    static update<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, criteria: string | string[] | number | number[] | Date | Date[] | ObjectId | ObjectId[] | FindOptionsWhere<T>, partialEntity: QueryDeepPartialEntity<T>, options?: UpdateOptions): Promise<UpdateResult>;
    /**
     * Inserts a given entity into the database, unless a unique constraint conflicts then updates the entity
     * Unlike save method executes a primitive operation without cascades, relations and other operations included.
     * Executes fast and efficient INSERT ... ON CONFLICT DO UPDATE/ON DUPLICATE KEY UPDATE query.
     * @param entityOrEntities
     * @param conflictPathsOrOptions
     */
    static upsert<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, entityOrEntities: QueryDeepPartialEntity<T> | QueryDeepPartialEntity<T>[], conflictPathsOrOptions: string[] | UpsertOptions<T>): Promise<InsertResult>;
    /**
     * Deletes entities by a given criteria.
     * Unlike remove 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.
     * @param criteria
     */
    static delete<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, criteria: string | string[] | number | number[] | Date | Date[] | ObjectId | ObjectId[] | FindOptionsWhere<T>): Promise<DeleteResult>;
    /**
     * Checks whether any entity exists that matches the given options.
     * @param options
     */
    static exists<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options?: FindManyOptions<T>): Promise<boolean>;
    /**
     * Checks whether any entity exists that matches the given conditions.
     * @param where
     */
    static existsBy<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: FindOptionsWhere<T>): Promise<boolean>;
    /**
     * Counts entities that match given options.
     * @param options
     */
    static count<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options?: FindManyOptions<T>): Promise<number>;
    /**
     * Counts entities that match given WHERE conditions.
     * @param where
     */
    static countBy<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: FindOptionsWhere<T>): Promise<number>;
    /**
     * Return the SUM of a column
     * @param columnName
     * @param where
     */
    static sum<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, columnName: PickKeysByType<T, number>, where: FindOptionsWhere<T>): Promise<number | null>;
    /**
     * Return the AVG of a column
     * @param columnName
     * @param where
     */
    static average<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, columnName: PickKeysByType<T, number>, where: FindOptionsWhere<T>): Promise<number | null>;
    /**
     * Return the MIN of a column
     * @param columnName
     * @param where
     */
    static minimum<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, columnName: PickKeysByType<T, number>, where: FindOptionsWhere<T>): Promise<number | null>;
    /**
     * Return the MAX of a column
     * @param columnName
     * @param where
     */
    static maximum<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, columnName: PickKeysByType<T, number>, where: FindOptionsWhere<T>): Promise<number | null>;
    /**
     * Finds entities that match given options.
     * @param options
     */
    static find<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options?: FindManyOptions<T>): Promise<T[]>;
    /**
     * Finds entities that match given WHERE conditions.
     * @param where
     */
    static findBy<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: 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).
     * @param options
     */
    static findAndCount<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options?: FindManyOptions<T>): Promise<[T[], number]>;
    /**
     * Finds entities that match given WHERE conditions.
     * Also counts all entities that match given conditions,
     * but ignores pagination settings (from and take options).
     * @param where
     */
    static findAndCountBy<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: FindOptionsWhere<T>): Promise<[T[], number]>;
    /**
     * Finds first entity that matches given conditions.
     * @param options
     */
    static findOne<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options: FindOneOptions<T>): Promise<T | null>;
    /**
     * Finds first entity that matches given conditions.
     * @param where
     */
    static findOneBy<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: FindOptionsWhere<T>): Promise<T | null>;
    /**
     * Finds first entity that matches given conditions.
     * @param options
     */
    static findOneOrFail<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options: FindOneOptions<T>): Promise<T>;
    /**
     * Finds first entity that matches given conditions.
     * @param where
     */
    static findOneByOrFail<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, where: FindOptionsWhere<T>): Promise<T>;
    /**
     * Executes a raw SQL query and returns a raw database results.
     * Raw query execution is supported only by relational databases (MongoDB is not supported).
     * @param query
     * @param parameters
     */
    static query<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, query: string, parameters?: any[]): Promise<any>;
    /**
     * Clears all the data from the given table/collection (truncates/drops it).
     * @param options
     * @param options.cascade
     */
    static clear<T extends BaseEntity>(this: {
        new (): T;
    } & typeof BaseEntity, options?: {
        cascade?: boolean;
    }): Promise<void>;
}
