typeorm
Version:
Data-Mapper ORM for TypeScript, ES7, ES6, ES5. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, WebSQL, MongoDB databases.
364 lines (362 loc) • 21.2 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var EventListenerTypes_1 = require("../metadata/types/EventListenerTypes");
/**
* Broadcaster provides a helper methods to broadcast events to the subscribers.
*/
var Broadcaster = /** @class */ (function () {
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
function Broadcaster(connection) {
this.connection = connection;
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Broadcasts "BEFORE_INSERT", "BEFORE_UPDATE", "BEFORE_REMOVE" events for all given subjects.
*/
Broadcaster.prototype.broadcastBeforeEventsForAll = function (entityManager, insertSubjects, updateSubjects, removeSubjects) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var insertPromises, updatePromises, removePromises, allPromises;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
insertPromises = insertSubjects.map(function (subject) { return _this.broadcastBeforeInsertEvent(entityManager, subject); });
updatePromises = updateSubjects.map(function (subject) { return _this.broadcastBeforeUpdateEvent(entityManager, subject); });
removePromises = removeSubjects.map(function (subject) { return _this.broadcastBeforeRemoveEvent(entityManager, subject); });
allPromises = insertPromises.concat(updatePromises).concat(removePromises);
return [4 /*yield*/, Promise.all(allPromises)];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_INSERT", "AFTER_UPDATE", "AFTER_REMOVE" events for all given subjects.
*/
Broadcaster.prototype.broadcastAfterEventsForAll = function (entityManager, insertSubjects, updateSubjects, removeSubjects) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var insertPromises, updatePromises, removePromises, allPromises;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
insertPromises = insertSubjects.map(function (subject) { return _this.broadcastAfterInsertEvent(entityManager, subject); });
updatePromises = updateSubjects.map(function (subject) { return _this.broadcastAfterUpdateEvent(entityManager, subject); });
removePromises = removeSubjects.map(function (subject) { return _this.broadcastAfterRemoveEvent(entityManager, subject); });
allPromises = insertPromises.concat(updatePromises).concat(removePromises);
return [4 /*yield*/, Promise.all(allPromises)];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "BEFORE_INSERT" event.
* Before insert event is executed before entity is being inserted to the database for the first time.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastBeforeInsertEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.BEFORE_INSERT && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.entity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.beforeInsert; })
.map(function (subscriber) { return subscriber.beforeInsert({
manager: manager,
entity: subject.entity
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "BEFORE_UPDATE" event.
* Before update event is executed before entity is being updated in the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastBeforeUpdateEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.BEFORE_UPDATE && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.entity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.beforeUpdate; })
.map(function (subscriber) { return subscriber.beforeUpdate({
manager: manager,
entity: subject.entity,
databaseEntity: subject.databaseEntity,
updatedColumns: subject.diffColumns,
updatedRelations: subject.diffRelations,
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "BEFORE_REMOVE" event.
* Before remove event is executed before entity is being removed from the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastBeforeRemoveEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.BEFORE_REMOVE && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.databaseEntity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.beforeRemove; })
.map(function (subscriber) { return subscriber.beforeRemove({
manager: manager,
entity: subject.hasEntity ? subject.entity : undefined,
databaseEntity: subject.databaseEntity,
entityId: subject.metadata.getEntityIdMixedMap(subject.databaseEntity)
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_INSERT" event.
* After insert event is executed after entity is being persisted to the database for the first time.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastAfterInsertEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.AFTER_INSERT && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.entity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.afterInsert; })
.map(function (subscriber) { return subscriber.afterInsert({
manager: manager,
entity: subject.entity
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_UPDATE" event.
* After update event is executed after entity is being updated in the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastAfterUpdateEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.AFTER_UPDATE && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.entity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.afterUpdate; })
.map(function (subscriber) { return subscriber.afterUpdate({
manager: manager,
entity: subject.entity,
databaseEntity: subject.databaseEntity,
updatedColumns: subject.diffColumns,
updatedRelations: subject.diffRelations,
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_REMOVE" event.
* After remove event is executed after entity is being removed from the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastAfterRemoveEvent = function (manager, subject) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
listeners = subject.metadata.listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.AFTER_REMOVE && listener.isAllowed(subject.entity); })
.map(function (entityListener) { return entityListener.execute(subject.entity); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, subject.entityTarget) && subscriber.afterRemove; })
.map(function (subscriber) { return subscriber.afterRemove({
manager: manager,
entity: subject.hasEntity ? subject.entity : undefined,
databaseEntity: subject.databaseEntity,
entityId: subject.metadata.getEntityIdMixedMap(subject.databaseEntity)
}); });
return [4 /*yield*/, Promise.all(listeners.concat(subscribers))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_LOAD" event for all given entities, and their sub-entities.
* After load event is executed after entity has been loaded from the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastLoadEventsForAll = function (target, entities) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, Promise.all(entities.map(function (entity) { return _this.broadcastLoadEvents(target, entity); }))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
/**
* Broadcasts "AFTER_LOAD" event for the given entity and all its sub-entities.
* After load event is executed after entity has been loaded from the database.
* All subscribers and entity listeners who listened to this event will be executed at this point.
* Subscribers and entity listeners can return promises, it will wait until they are resolved.
*/
Broadcaster.prototype.broadcastLoadEvents = function (target, entity) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var children, listeners, subscribers;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (entity instanceof Promise)
return [2 /*return*/];
children = this.connection.getMetadata(target).relations.reduce(function (promises, relation) {
if (!entity.hasOwnProperty(relation.propertyName))
return promises;
var value = relation.getEntityValue(entity);
if (value instanceof Array) {
promises = promises.concat(_this.broadcastLoadEventsForAll(relation.inverseEntityMetadata.target, value));
}
else if (value) {
promises.push(_this.broadcastLoadEvents(relation.inverseEntityMetadata.target, value));
}
return promises;
}, []);
listeners = this.connection.getMetadata(target).listeners
.filter(function (listener) { return listener.type === EventListenerTypes_1.EventListenerTypes.AFTER_LOAD && listener.isAllowed(entity); })
.map(function (listener) { return entity[listener.propertyName](); });
subscribers = this.connection.subscribers
.filter(function (subscriber) { return _this.isAllowedSubscriber(subscriber, target) && subscriber.afterLoad; })
.map(function (subscriber) { return subscriber.afterLoad(entity); });
return [4 /*yield*/, Promise.all(children.concat(listeners.concat(subscribers)))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
// -------------------------------------------------------------------------
// Protected Methods
// -------------------------------------------------------------------------
/**
* Checks if subscriber's methods can be executed by checking if its don't listen to the particular entity,
* or listens our entity.
*/
Broadcaster.prototype.isAllowedSubscriber = function (subscriber, target) {
return !subscriber.listenTo ||
!subscriber.listenTo() ||
subscriber.listenTo() === Object ||
subscriber.listenTo() === target;
};
return Broadcaster;
}());
exports.Broadcaster = Broadcaster;
//# sourceMappingURL=Broadcaster.js.map