factory

问题 Let there be a C++ library (let's call it lib ) which gets included as a static library in an application (let's call it app ). Within the lib there's a base class node . Each subclass of a node is identified by a UUID. I employ a self registering pattern to ensure that new classes register themselves at the factory. The factory allows to build a node subclass object based on the provided UUID. The app builds objects through the lib 's factory::build() function. My factory is based on the

问题 Let there be a C++ library (let's call it lib ) which gets included as a static library in an application (let's call it app ). Within the lib there's a base class node . Each subclass of a node is identified by a UUID. I employ a self registering pattern to ensure that new classes register themselves at the factory. The factory allows to build a node subclass object based on the provided UUID. The app builds objects through the lib 's factory::build() function. My factory is based on the

问题 Short question: If I have class that impelemnts FactoryBean interface, how can I get from FactoryBean object itself instead of FactoryBean.getObject()? Long question: I have to use 3-rd party Spring based library which is hardly use FactoryBean interface. Right now I always must configure 2 beans: <!-- Case 1--> <bean id="XYZ" class="FactoryBean1" scope="prototype"> <property name="steps"> <bean class="FactoryBean2"> <property name="itemReader" ref="aName"/> </bean> </property> </bean> <bean

问题 i cant create B-Object, but why? public class AFactory { public int currentRange; private abstract class A { protected final Object range = currentRange; public int congreteRange = 28; } public class B extends A { public int congreteRange = 42; } synchronized A createNew(Class<? extends A> clazz) throws Exception { // EDIT: there is accessible default constructor currentRange = clazz.newInstance().congreteRange; return clazz.newInstance(); } public static void main(String[] args) throws

问题 I modified the factory pattern with self registering types from this blog post for my own needs. Instead of strings I use UUIDs (using boost.uuid ) to register & build my node sub-classes. The factory and corresponding node and node_* subclasses are part of a library. I link against that library (static library) in my client application and then want to use the library's factory::build() function to build objects based on the known UUIDs. The problem I am facing is that everything is working

问题 Is it better to use factory classes or closures in Zend Framework 2, and why? I know that closures cannot be serialized, but if you return them from Module#getServiceConfig(), this will not affect the caching of the rest of your configuration data, and the closures would be cached in your opcode cache anyway. How does performance differ in constructing a factory class vs executing a closure? Does PHP wrap and instantiate closures only when you execute them, or would it do this for every

问题 I have the factory, when i get socket messages. How i can get returned factory's actual data in my controller ? Help please. app.factory('socket',['$rootScope', function($rootScope) { connection.open(); var connection = new autobahn.Connection({ url: 'wss://site.com:6555/', realm: 'realm' }); var collection = { 'topic1': [], 'topic2': [] }; function onevent(args) { console.log("Event:", args[0]); collection.topic1.push(args[0]); } connection.onopen = function(session) { session.subscribe

问题 I'm new with the jQueryUI widget factory, therefore it may be silliness what I'll ask. I'd like to create an ajax tooltip where I can set the url of the ajax call through an option but this option is not readable in the _mouseOver method which contains the ajax call. (function($) { $.widget("ui.tooltip", { options: { url: '' }, _create: function() { alert(this.options.url); //it works this.element.bind({ mouseenter: this._mouseOver }); }, _mouseOver: function() { alert(this.options.url); //it

问题 I'm using AngularJS Seed and I want to see a working implementation of a Web Worker. I want to make a simple Web Worker work in order to understand it, but I'm running into an issue with the functionality. I have the Web Worker code in the services.js like so: 'use strict'; /* Services */ var app = angular.module('myApp.services', []). app.factory("HelloWorldService",['$q',function($q){ var worker = new Worker('js/doWork.js'); var defer; worker.addEventListener('message', function(e) {

问题 I have a class template <unsigned int N> class StaticVector { // stuff }; How can I declare and define in this class a static factory method returning a StaticVector<3> object, sth like StaticVector<3> create3dVec(double x1, double x2, double x2); ? 回答1: "How can I declare and define in this class" In what class? You've defined a class template, not a class. You can't call a static function of a class template itself, you have to call a particular version of the static function that's part of