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.
141
questions
2
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1answer
71 views
Factory Method and Log writer class
I Have this class want to practice how to write a factory method pattern
and I can change the logPlace by set the app.config,
and I try to improve the performance ...
0
votes
1answer
83 views
Best practice for factory pattern in c++?
I'm implementing a simple data reader to get image sequences from either a pre-recorded video file (In my case ROS bag file), or a camera device (In my case Intel Realsense). Basically I intend for ...
8
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0answers
333 views
Private VBA Class Initializer called from Factory #2
About
This is a follow-up of a previous question Private VBA Class Initializer called from Factory. I've decided to create a new question instead of answering my old question because I would like the ...
7
votes
1answer
236 views
Private VBA Class Initializer called from Factory
I've been playing with COM lately and while getting to understand the mechanism of how class methods/properties are called an idea came to mind: what if we can have a global instance of a class that ...
3
votes
1answer
145 views
Implement Factory pattern with multiple parameters and each parameters are interface
I am a little bit confused on Factory Method with multiple parameters in which all parameters can change from GUI by user as seen below picture.
For each combobox item I have an interface and ...
2
votes
1answer
41 views
Determine dependency injection type at runtime from config
I have a .NET application with a .config file that has content like this:
...
2
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0answers
86 views
Swift Struct-based Factory Pattern
Edit: I added another configuration vector to CardView, a size attribute, which may be .small or ...
0
votes
1answer
70 views
Is this implementation of factory design pattern in C#?
Here are my class library code which create credit card.
...
4
votes
1answer
183 views
Bank with factory method for accounts, multithreaded deposit and withdraw
I have a couple questions about this program
Should I implement runnable instead of using thread class? I like the idea of the consumer and producer being thread objects, it seems simpler to me, but ...
1
vote
1answer
67 views
Using a factory pattern many times [closed]
This is my first question on this website and I hope it goes well.
I have created a Kotlin factory pattern and I am using it very frequently. the code I use it consists of functions inside a class. ...
6
votes
1answer
584 views
C++ Template to implement the Factory Pattern
Design
A template class that will create a concrete instance of an interface class when given the name (as a string) of the concrete class.
This design is often seen in code, so the purpose of this ...
0
votes
1answer
46 views
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 ...
3
votes
1answer
169 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 ...
4
votes
1answer
136 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 ...
5
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0answers
150 views
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 ...
1
vote
1answer
238 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:
...
1
vote
1answer
40 views
Create a pump object from either one of pump model number or pump product id
Consider this code:
...
5
votes
3answers
3k 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
...
0
votes
1answer
112 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
votes
1answer
123 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 ...
0
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2answers
749 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
votes
1answer
1k 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, ...
2
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2answers
137 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:
...
1
vote
2answers
219 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. ...
1
vote
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 ...
4
votes
0answers
74 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 ...
1
vote
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
votes
1answer
165 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 ...
8
votes
4answers
1k 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 ...
2
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0answers
304 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:
...
6
votes
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 ...
1
vote
2answers
72 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
votes
2answers
180 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
79 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
6k 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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0answers
34 views
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1answer
676 views
2
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1answer
352 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 ...
1
vote
2answers
235 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 ...
1
vote
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.
...
0
votes
1answer
4k 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 ...
0
votes
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 ...
1
vote
2answers
1k 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 ...
8
votes
4answers
7k 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
50 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
528 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 ...
0
votes
2answers
146 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 ...
2
votes
0answers
600 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 ...
1
vote
2answers
393 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 ...
