/**
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* Broadcaster provides a helper methods to broadcast events to the subscribers.
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*/
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var Broadcaster = /** @class */ (function () {
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// -------------------------------------------------------------------------
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// Constructor
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// -------------------------------------------------------------------------
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function Broadcaster(queryRunner) {
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this.queryRunner = queryRunner;
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}
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// -------------------------------------------------------------------------
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// Public Methods
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// -------------------------------------------------------------------------
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/**
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* Broadcasts "BEFORE_INSERT" event.
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* Before insert event is executed before entity is being inserted to the database for the first time.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastBeforeInsertEvent = function (result, metadata, entity) {
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var _this = this;
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if (entity && metadata.beforeInsertListeners.length) {
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metadata.beforeInsertListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.beforeInsert) {
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var executionResult = subscriber.beforeInsert({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "BEFORE_UPDATE" event.
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* Before update event is executed before entity is being updated in the database.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastBeforeUpdateEvent = function (result, metadata, entity, databaseEntity, updatedColumns, updatedRelations) {
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var _this = this;
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if (entity && metadata.beforeUpdateListeners.length) {
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metadata.beforeUpdateListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.beforeUpdate) {
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var executionResult = subscriber.beforeUpdate({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata,
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databaseEntity: databaseEntity,
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updatedColumns: updatedColumns || [],
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updatedRelations: updatedRelations || []
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "BEFORE_REMOVE" event.
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* Before remove event is executed before entity is being removed from the database.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastBeforeRemoveEvent = function (result, metadata, entity, databaseEntity) {
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var _this = this;
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if (entity && metadata.beforeRemoveListeners.length) {
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metadata.beforeRemoveListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.beforeRemove) {
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var executionResult = subscriber.beforeRemove({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata,
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databaseEntity: databaseEntity,
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entityId: metadata.getEntityIdMixedMap(databaseEntity)
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "AFTER_INSERT" event.
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* After insert event is executed after entity is being persisted to the database for the first time.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastAfterInsertEvent = function (result, metadata, entity) {
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var _this = this;
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if (entity && metadata.afterInsertListeners.length) {
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metadata.afterInsertListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.afterInsert) {
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var executionResult = subscriber.afterInsert({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "AFTER_UPDATE" event.
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* After update event is executed after entity is being updated in the database.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastAfterUpdateEvent = function (result, metadata, entity, databaseEntity, updatedColumns, updatedRelations) {
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var _this = this;
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if (entity && metadata.afterUpdateListeners.length) {
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metadata.afterUpdateListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.afterUpdate) {
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var executionResult = subscriber.afterUpdate({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata,
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databaseEntity: databaseEntity,
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updatedColumns: updatedColumns || [],
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updatedRelations: updatedRelations || []
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "AFTER_REMOVE" event.
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* After remove event is executed after entity is being removed from the database.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastAfterRemoveEvent = function (result, metadata, entity, databaseEntity) {
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var _this = this;
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if (entity && metadata.afterRemoveListeners.length) {
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metadata.afterRemoveListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (this.queryRunner.connection.subscribers.length) {
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this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.afterRemove) {
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var executionResult = subscriber.afterRemove({
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connection: _this.queryRunner.connection,
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queryRunner: _this.queryRunner,
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manager: _this.queryRunner.manager,
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entity: entity,
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metadata: metadata,
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databaseEntity: databaseEntity,
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entityId: metadata.getEntityIdMixedMap(databaseEntity)
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});
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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};
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/**
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* Broadcasts "AFTER_LOAD" event for all given entities, and their sub-entities.
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* After load event is executed after entity has been loaded from the database.
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* All subscribers and entity listeners who listened to this event will be executed at this point.
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* Subscribers and entity listeners can return promises, it will wait until they are resolved.
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*
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* Note: this method has a performance-optimized code organization, do not change code structure.
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*/
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Broadcaster.prototype.broadcastLoadEventsForAll = function (result, metadata, entities) {
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var _this = this;
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entities.forEach(function (entity) {
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if (entity instanceof Promise) // todo: check why need this?
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return;
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// collect load events for all children entities that were loaded with the main entity
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if (metadata.relations.length) {
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metadata.relations.forEach(function (relation) {
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// in lazy relations we cannot simply access to entity property because it will cause a getter and a database query
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if (relation.isLazy && !entity.hasOwnProperty(relation.propertyName))
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return;
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var value = relation.getEntityValue(entity);
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if (value instanceof Object)
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_this.broadcastLoadEventsForAll(result, relation.inverseEntityMetadata, value instanceof Array ? value : [value]);
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});
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}
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if (metadata.afterLoadListeners.length) {
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metadata.afterLoadListeners.forEach(function (listener) {
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if (listener.isAllowed(entity)) {
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var executionResult = listener.execute(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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if (_this.queryRunner.connection.subscribers.length) {
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_this.queryRunner.connection.subscribers.forEach(function (subscriber) {
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if (_this.isAllowedSubscriber(subscriber, metadata.target) && subscriber.afterLoad) {
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var executionResult = subscriber.afterLoad(entity);
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if (executionResult instanceof Promise)
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result.promises.push(executionResult);
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result.count++;
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}
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});
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}
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});
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};
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// -------------------------------------------------------------------------
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// Protected Methods
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// -------------------------------------------------------------------------
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/**
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* Checks if subscriber's methods can be executed by checking if its don't listen to the particular entity,
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* or listens our entity.
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*/
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Broadcaster.prototype.isAllowedSubscriber = function (subscriber, target) {
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return !subscriber.listenTo ||
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!subscriber.listenTo() ||
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subscriber.listenTo() === Object ||
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subscriber.listenTo() === target ||
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subscriber.listenTo().isPrototypeOf(target);
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};
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return Broadcaster;
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}());
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export { Broadcaster };
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//# sourceMappingURL=Broadcaster.js.map
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