Questions tagged [factory-method]
Use this tag for code reviews of, or involving methods that create a new instance of a given type, often with parameters that determine how the instance gets created.
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Use of Factory pattern — how to implement it
I am trying to figure out how Factory pattern works. I implemented it with TypeScript in this github repo: https://github.com/emilecollin/factory_pattern
Basically this is emulating spaceships gaming ...
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Animal class with Threads and factory
it's my first time working with threads and I had this Homework to solve:
Homework Text:
Program a class called Animal. Animals have a spatial position that
represented by an x and a y coordinate (...
3
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1answer
164 views
Grouping low-level services together into a high-level service
I am working on an e-commerce website. What I need to do is to save an advertisement. The ad has some properties and some photos... properties should be save to DB and photos should be saved to file ...
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1answer
100 views
Java enum-based factory to calculate entry parameters
I want to create a factory to return all Source instances that match given entry parameters- that is, I want to iterate through some Collection of objects and for each entry check boolean method.
I ...
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Factory class that uses reflection to instantiate objects by class name
In this SO post Dynamically choose class from string Alexander Platonov creates a Function on the fly and then uses Application.Run() to instantiate an Object by ...
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1answer
85 views
Creating a ModelBinder to Sanitize user input in HTML format
I have a custom model binder which takes user input in HTML format, sanitize the HTML input by removing any script or XSS threat and returns the sanitized HTML string:
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1answer
40 views
Create a pump object from either one of pump model number or pump product id
Consider this code:
...
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3answers
1k views
Chess move validator
I have written code for making a Chess Validator, which will validate the moves of a chess game.
There is a Main class which is taking the input from the user, about the move.
Problem Description
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1answer
99 views
Factory to instantiate and configure Selenium WebDriver
I, also, need to know whether this is a valid implementation of the factory pattern.
The amount of effort which goes into configuring DriverFactory to simply get a ...
3
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1answer
114 views
Instantiating View Models using a static factory
I am building an e-commerce website. I have an application layer service called SearchService. SearchService receives a search ...
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2answers
236 views
Factory method to create two kinds of cars based on an enum
I am implementing the factory method approach. My intention is to know if my approach is correct for factory method. Any modifications to be done to align with the approach?
First I am creating an ...
4
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1answer
680 views
Electricity billing system for home in OOP
I recently appeared for interview for code-pairing round and I was asked following question: Electricity Billing System for home. The corresponding power usage of home appliances (Fan, AC, Fridge, ...
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1answer
54 views
PHP Factory Pattern : Should I use `create()` or `__invoke()`?
I currently had a colleague reviewing my code and he had a comment on a factory class I created. It's very simple:
...
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2answers
213 views
Synchronizer for importing XML files into a database when folder content changes
I have created a Synchronizer, the purpose of which is to read data from an XML source file and store the result in a DB.
I have different source types, for example Student.XML, School.XML, etc. ...
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2answers
1k views
Shape area calculation
I know questions with this text has been asked and already answered, but my question is mainly limited to only one method of this flow and where it should be.
I have an assembly for Shape's area ...
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0answers
73 views
Chained Factories by Expression Template
I want to make factories that can chained together to create a pile of layers. One of the advantage of chained factories is that later factories can pass specifications to earlier factories. For ...
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0answers
23 views
Logs UI errors to a service provided in the configuration
As part of the project I am currently working on we want to log our UI component errors as well. I developed this package as a base.
It's a factory (basically, not sure if it's correctly a factory).
...
2
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1answer
127 views
Factory Design Pattern in Java [closed]
I am currently attempting to understand the fundamentals of factory methods in Java and I found a lot of exampels where a pattern like this has been used.
I got some exercises about sorting algorithms ...
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4answers
817 views
Packet Factory design for networking application
I'm working on a network application that implements a custom protocol. I want to easily extend the application support over the protocol as it changes. Also, as the application extends, I might need ...
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0answers
259 views
Show mobile SoundCloud player in WebView
Demo for a SoundCloud player in WebView for specific song or artist stream as a workaround because SoundCloud is not accepting API key request anymore.
SoundCloudWebView:
...
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3answers
2k views
Creating HTTP proxies for services
I have a HTTP client factory that creates a separate HTTP proxy instance for each of my services - which are in the cloud. The factory creates each instance on the basis of an interface which the ...
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2answers
71 views
JavaScript library to notify watchers of changes
Background
Last year, while I was still entering the beginning of Immutability and Pure functions and whatnot I created a library for the community called ...
5
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2answers
169 views
Model-to-Prefab mapper and factory
I am creating a fluent interface to build user interfaces in the Unity game engine.
As a subcomponent of this library, I have a set of objects called Components (e.g. Panel, Button, etc) that I want ...
7
votes
1answer
2k views
Object-oriented calorie counter
Object-oriented program for a calorie counter sporting polymorphic
methods for both genders.
Principles to adhere to:
Uniform Access Principle
Polymorphism
Dependency inversion principle through the ...
1
vote
3answers
77 views
Choose betwen a few message values depending on 3 variables
This code write out the title and the body of a message depending basically on 3 variables combination.
How could i refactor this nicely?
a factory pattern? how more precisely?
a mapping array ? but ...
2
votes
2answers
5k views
Using Autofac to do DI in a static factory method
I'm using Autofac to create one of my classes inside of a static factory method Create. This code is working and I haven't noticed any side effects yet. Admittedly, ...
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1answer
558 views
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1answer
307 views
Rendering SharePoint lists into tables with any number of columns
I have the following code, but first the explanation.
I am using a REACTJS Office UI Component called details list:
https://developer.microsoft.com/en-us/fabric#/components/detailslist
And I want my ...
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2answers
211 views
Two similar factory classes to instantiate services
I'm working on building a library to help you bootstrap the development of a Java API. The premise is, you can have your controllers implement interfaces like ...
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0answers
57 views
Creating objects by defined name
I'm trying to write universal factory creating objects by name. I've got some working prototype now but there must be a better way than casting construction methods to void pointer.
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1answer
3k views
A factory with static objects or an enum with instance objects?
My application accepts different messages. A message is described by its schema.
enum ...
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2answers
89 views
Class-based Message System Pattern
I'm trying to create an extensible system for building messages.
I want each style of message to be a unique class. I don't want the client to have to worry about the class type when creating the ...
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vote
2answers
977 views
Correct implementation of the factory pattern in php
All, during my vacation I am trying to learn myself the basic principles of OOP and the factory pattern in php. I read a lot of tutorials and websites (e.g. http://www.phptherightway.com) and began to ...
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4answers
5k views
Instantiating a C++ class based on an enum value
I have a bit of code duplication and trying to figure a better way to reduce it. I'm looking for any suggestions. If this was in Java I could easily use reflection.
The code posted is a basic ...
6
votes
1answer
49 views
ItemFactory Class - Creates copies of predefined items by name and returns by pointer
I'm working on writing a text based RPG game, and I've decided to define each possible item as a JSON file in a specific directory. The item factory is meant to act as a singleton, and uses static ...
2
votes
1answer
472 views
DDD Domain Objects, Factories, and Presenters
Aloha,
I am working to understand some of the different pieces of domain driven design. In this particular case, I have a NameFactory that builds a Name domain object. I also have a NamePresenter ...
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2answers
138 views
PDO anonymous function inside a Factory
In this question here on S.O, the accepted answer suggests to use both anonymous function and factory pattern for dealing with PDO connection. I believe the anonymous function is used in case a ...
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0answers
597 views
Simple files parsing and info extraction
First let me describe the problem, we want to solve:
We have hierarchical directories structure with different types of templates. Each type of templates is located in dedicated folder.
Hierarchical ...
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2answers
356 views
Factory design pattern with Shapes
I'm making the very common example of Factory design pattern which creates a factory of shapes and return an instance of the type Shape. I wonder which is the best way to replace that bunch of nested ...
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1answer
112 views
“Factory” which produces a “connection” object
I am a newbie in C# and in OOP in general. I decided to create a class that should give out a "connection" object. I would like your advice and critique on improving it.
...
2
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1answer
195 views
Factory design pattern for circles and polygons
I am going over a number of design patterns and today I ask you to please inspect my application attempt of the Factory design pattern. Please feel free to share what you think about it, because my ...
4
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2answers
59 views
Configuring an editor for various languages using Factory Method Pattern
I need to know if my code is a valid implementation of the factory method pattern. Also, if the Configuration and Editor were interfaces would this still be a valid implementation of the Factory ...
3
votes
1answer
491 views
Generating Settings Objects from Database via Factory Class
In an ASP.NET MVC application (C#) have a factory-like class that generates settings objects of ISettingType for my application. However, some settings are very ...
4
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4answers
184 views
Factory Method Pattern - Base implementation to Add New Records
Most importantly which bothers me in the following implementation is the call in BranchAddManager, do I really need to call ...
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2answers
180 views
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1answer
285 views
Factory to create Finite Impulse Response filters in C++
I've recently begun a project in digital signal processing and am using C++ as the programming language. In this project, I have implemented several finite impulse response (FIR) filters. Many of ...
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2answers
3k views
Window Factory and Manager using MVVM pattern
I am fairly new to Factories and Dependency Injection in MVVM.
I've build my View(Window) factory with help from SO, and I would like to know if I had implemented everything properly(code works just ...
6
votes
2answers
994 views
Python REST API clients
I am working on a project right now, where we need to search different APIs, then clean & persists data to database and finally pushing to Elasticsearch.
The high level code looks like this:
<...
3
votes
2answers
110 views
Sequence generators not only for potatoes but also for apples and oranges
The last question about sequence generators Growing potatoes in delayed sequences was only about potatoes. I thougt why not make it work with apples and oranges too so I made it generic.
The base ...
