@decaf-ts/db-decorators
Version:
Agnostic database decorators and repository
66 lines (64 loc) • 8.32 kB
JavaScript
import { Operations } from "./Operations";
/**
* @summary Holds the registered operation handlers
*
* @class OperationsRegistry
* @implements IRegistry<OperationHandler<any>>
*
* @see OperationHandler
*
* @category Operations
*/
export class OperationsRegistry {
constructor() {
this.cache = {};
}
/**
* @summary retrieves an {@link OperationHandler} if it exists
* @param {string} target
* @param {string} propKey
* @param {string} operation
* @param accum
* @return {OperationHandler | undefined}
*/
get(target, propKey, operation, accum) {
accum = accum || [];
let name;
try {
name = typeof target === "string" ? target : target.constructor.name;
accum.unshift(...Object.values(this.cache[name][propKey][operation] || []));
// eslint-disable-next-line @typescript-eslint/no-unused-vars
}
catch (e) {
if (typeof target === "string" ||
target === Object.prototype ||
Object.getPrototypeOf(target) === Object.prototype)
return accum;
}
let proto = Object.getPrototypeOf(target);
if (proto.constructor.name === name)
proto = Object.getPrototypeOf(proto);
return this.get(proto, propKey, operation, accum);
}
/**
* @summary Registers an {@link OperationHandler}
* @param {OperationHandler} handler
* @param {string} operation
* @param {{}} target
* @param {string | symbol} propKey
*/
register(handler, operation, target, propKey) {
const name = target.constructor.name;
const handlerName = Operations.getHandlerName(handler);
if (!this.cache[name])
this.cache[name] = {};
if (!this.cache[name][propKey])
this.cache[name][propKey] = {};
if (!this.cache[name][propKey][operation])
this.cache[name][propKey][operation] = {};
if (this.cache[name][propKey][operation][handlerName])
return;
this.cache[name][propKey][operation][handlerName] = handler;
}
}
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