/**
 * Handler for metadata
 */
import { CLASS_TYPE, METADATA_TYPE } from './../Constants';
import { IEntityOptions } from './../options/IEntityOptions';
import { IPropertyOptions } from './../options/IPropertyOptions';
import { ISchemaOptions } from './../options/ISchemaOptions';
import { IObjectOptions } from './../options/IObjectOptions';
import { EventEmitter } from 'events';
import { IAbstractOptions } from '../options/IAbstractOptions';
import { IAttributeOptions } from '../options/IAttributeOptions';
/**
 * Registry for metadata of classes and there properties
 */
export declare class MetadataRegistry extends EventEmitter {
    private static INC;
    private static $self;
    private readonly metadata;
    private readonly cached;
    private schemas;
    private targets;
    constructor();
    static $(): MetadataRegistry;
    static reset(): void;
    /**
     *  Add typed element to the local registry
     *
     * @param context
     * @param options
     */
    add(context: METADATA_TYPE | string, options: IEntityOptions | IPropertyOptions | ISchemaOptions | IObjectOptions | IAttributeOptions, trigger?: boolean): IEntityOptions | IPropertyOptions | ISchemaOptions | IObjectOptions | IAttributeOptions;
    /**
     * Add cached content mostly for ClassRef instances throw AbstractRef
     *
     * @param context
     * @param options
     */
    addCached(context: METADATA_TYPE | string, options: IEntityOptions | IPropertyOptions | ISchemaOptions | IObjectOptions | IAttributeOptions): IEntityOptions | IPropertyOptions | ISchemaOptions | IObjectOptions | IAttributeOptions;
    notify(eventName: string, context: string, options: any): void;
    remove(context: METADATA_TYPE | string, c: (x: any) => boolean, trigger?: boolean): void;
    getByContext<T extends IAbstractOptions>(context: METADATA_TYPE): T[];
    getTargets(): any[];
    /**
     * Return the metadata/options for some entry (entity/property/classref/...). A copy of the original will be delivered.
     *
     * @param context
     * @param target
     * @param attributes
     * @param propertyName
     */
    getByContextAndTarget<T extends IAbstractOptions>(context: METADATA_TYPE | string, target: CLASS_TYPE | string, attributes?: 'merge' | 'assign' | 'defaults', propertyName?: string): T[];
    mergeAttributes(context: METADATA_TYPE | string, target: CLASS_TYPE | string, data: IPropertyOptions | IEntityOptions | IObjectOptions | ISchemaOptions, mode?: 'merge' | 'assign' | 'defaults'): void;
    getAttributesForTarget<T extends IAttributeOptions>(context: METADATA_TYPE | string, target: CLASS_TYPE | string): T[];
    getAttributesForTargetProperty<T extends IAttributeOptions>(context: METADATA_TYPE, target: CLASS_TYPE, propertyName: string): T[];
    getAttributesForTargetProperties<T extends IAttributeOptions>(context: METADATA_TYPE, target: CLASS_TYPE | string): T[];
    getByTarget(target: CLASS_TYPE): IAbstractOptions[];
    private createSearchFunction;
    find(context: METADATA_TYPE | string, find: CLASS_TYPE): IAbstractOptions;
    findCached(context: METADATA_TYPE | string, find: CLASS_TYPE): IAbstractOptions;
    filter(context: METADATA_TYPE | string, find: CLASS_TYPE): IAbstractOptions[];
    getMetadata(): IAbstractOptions[];
    getCached(): IAbstractOptions[];
    getSchemas(): any[];
    getMetadatasForSchema(schema: string): IAbstractOptions[];
}