@mikro-orm/core
Version:
TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.
32 lines (31 loc) • 1.96 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Transactional = Transactional;
const RequestContext_1 = require("../utils/RequestContext");
const resolveContextProvider_1 = require("../utils/resolveContextProvider");
const TransactionContext_1 = require("../utils/TransactionContext");
/**
* This decorator wraps the method with `em.transactional()`, so you can provide `TransactionOptions` just like with `em.transactional()`.
* The difference is that you can specify the context in which the transaction begins by providing `context` option,
* and if omitted, the transaction will begin in the current context implicitly.
* It works on async functions and can be nested with `em.transactional()`.
*/
function Transactional(options = {}) {
return function (target, propertyKey, descriptor) {
const originalMethod = descriptor.value;
if (originalMethod.constructor.name !== 'AsyncFunction') {
throw new Error('@Transactional() should be use with async functions');
}
descriptor.value = async function (...args) {
const { context, ...txOptions } = options;
const em = await (0, resolveContextProvider_1.resolveContextProvider)(this, context)
|| TransactionContext_1.TransactionContext.getEntityManager()
|| RequestContext_1.RequestContext.getEntityManager();
if (!em) {
throw new Error(`@Transactional() decorator can only be applied to methods of classes with \`orm: MikroORM\` property, \`em: EntityManager\` property, or with a callback parameter like \`@Transactional(() => orm)\` that returns one of those types. The parameter will contain a reference to current \`this\`. Returning an EntityRepository from it is also supported.`);
}
return em.transactional(() => originalMethod.apply(this, args), txOptions);
};
return descriptor;
};
}