Questions tagged [repository]
For questions about the implementation of the repository design pattern.
144
questions
3
votes
2
answers
653
views
Banking System in C++ [V2]
this is the second version of my BankingSystem in C++ for the first one go here: Banking System console app in C++
I did quite a lot of changes since the last version mainly spliting the User class ...
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4
votes
4
answers
3k
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Banking System console app in C++
I built a banking system in C++ (still a lot of features to do but (I decided to post it here to see what can I change so I wont make those mistakes in the future).
User header and c++ files
Header
<...
- 347
4
votes
1
answer
365
views
Unit of Work & Repository Pattern - Injecting UoW into Repository Base
Description
I am implementing the Unit of Work & Repository Pattern with Dapper as my ORM and PostgreSQL as the relational database. I have seen examples of UoW where:
The UoW class creates an ...
- 41
2
votes
1
answer
141
views
Command handlers in node.js
Description
This javascript code uses tmi.js to listen for chat messages in a Twitch chat and perform certain actions depending on their content. In the sample code ...
- 113
1
vote
0
answers
40
views
Frontend to handle course planning and administration [closed]
I read up on and dived into the Repository pattern for a project I am working on.
I have understood that the repository abstracts the actual access to any form of storage for my data model. What I was ...
- 111
1
vote
0
answers
126
views
.NET Repository Pattern
I'm currently in the process of defining some framework, one of the first things that I thought I could start with was defining some repository pattern/layer.
I generally wanted some input on it, ...
- 187
0
votes
1
answer
444
views
Generic Base Repository implementation with Unit of Work in C#
I have seen a lot of Repository pattern implementations with Unit of Work. The simplest way of implementing this I came across is using hard-coded repos (such as this one), while the way recommended ...
- 143
2
votes
1
answer
142
views
Is it good way to user dao when assembling dto to entity or not?
I have User entity that has relationship to other entities(Order,Profile)
When I assemble entity from dto and back I need assemble order and profile entity too.
User entity:
...
- 53
1
vote
1
answer
118
views
Is My Controller too Coupling?
To put it in context, I had the assignment to do for a job interview in Node.JS, which basically making CRUD with products (and it have certain conditions).
The assignment was well-understandable, and ...
- 19
0
votes
0
answers
2k
views
Dapper UOW with Multiple Databases
Scenarios / Requirements:
I am working on to convert the existing WebAPI Data Layer to Dapper from EF. The following are the ...
- 121
4
votes
2
answers
8k
views
Should i throw exceptions in the service layer or repository, and catch it on the controller? [closed]
I read some answers here on stack exchange, but none really "hits the nail on the head" about where to throw exceptions, where I shouldn't and where to catch them.
the idea that an exception ...
- 283
2
votes
1
answer
1k
views
Is repository pattern violated while using IQueryable outside of it?
I am writting an API backend application using .NET Core and Visual Studio.
Here is the solution structure:
[ProjectName] - Solution
...
- 21
2
votes
1
answer
105
views
Reducing Inventory Quantity When Order Is Being Processed
I've got a method which removes quantity from inventory when an order is completed. If there is not enough inventory quantity available, the order completion fails and the sql transaction is rolled ...
- 143
2
votes
0
answers
59
views
Monitor room repository for livedata changes and update views
I have built a quiz app. It is my first project so the purpose is to learn app development at this stage.
There are two key things which I am wondering how to do better (the app is fully functional).
...
- 83
4
votes
2
answers
3k
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Repository pattern with Unit of work using ADO.NET in C# to authenticate user from database
So I am using the latest version of Dapper and it works great for mapping my POCO classes but there are some scenarios where I need to return a DataSet instead of ...
- 101
6
votes
1
answer
138
views
Expiring key/value repository. Java
The following code is in-memory repository that stores key/value pairs. It will be used on our server to keep information about active clients. Clients send keepalive messages to indicate that them ...
- 257
3
votes
1
answer
2k
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Handle database validation (exists, unique constraint, etc) [closed]
Let's assume you are writing a REST Api with a common structure like Controller > Service > Repository > Database.
In the database there's a table with a column with a unique constraint:
<...
- 183
3
votes
0
answers
589
views
Simple Sqlite-driven WinForms app in C# 7.0 - database interaction code
Description
This is a simple "demo" app designed to help gain familiarity with interacting with an Sqlite database from C#, particularly storing images as blobs. The database has a single ...
- 404
2
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0
answers
78
views
A UserService method that calls the UserRepository a few times
I'm trying to implement some domain driven design architecture, such as a repository to talk to the database, and a service that talks to the repository.
I have an action where I want to see if a User ...
- 271
4
votes
0
answers
108
views
Is there a better way to unit test a repository for a large aggregate root?
In our project we use domain-driven design and our customer aggregate root is large. The unit tests for the aggregate root itself are simple (~50 or so tests), but I am struggling with the repository ...
- 141
3
votes
1
answer
4k
views
Is it okay to use multiple repositories from inside a single service implementation in Spring?
I currently have two entities, Adress and Company. They both have DTOs to perform CRUD ...
- 315
1
vote
1
answer
770
views
Laravel 5.8: prevent duplicated code
Sometimes we have this code blocks that is repeated in the same controller again and again, I reviewed the Repository Pattern but I didn't understand how to deal with some kind of these duplication.
...
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4
votes
3
answers
2k
views
Method that fetches rows from database and maps it to a Model class with SqlDataReader
So, I have a project that has a lot of methods that look alike.
In the below method as you can see it just fetches a bunch of rows from database and maps it to a model class.
In this case ...
- 149
3
votes
1
answer
113
views
Refactoring code to implement clean code using repositories
I've been refactoring code today, try to implement a clean code setup using repositories. Is this on track? Can any improvements be made?
...
- 133
2
votes
0
answers
72
views
Unit testing the code that is written using repository pattern
I have implemented my business logic using the repository pattern. I have an Approve method in my controller. I am calling the service method ...
- 217
1
vote
1
answer
159
views
Simple todo list VanillaJS - repository pattern
I'm new in JavaScript, so I was looking for some reviews and advice for better code quality.
...
2
votes
0
answers
140
views
Swift MVVM: Repositories - loading entities and dependency injection
I create a lexikon and a navigation for ZOO. I use MVVM architecture supported by ReactiveSwift. I have a few questions about my practises and whether I could write my repositories better and more ...
-2
votes
2
answers
64
views
Initialize global repository or in forms? [closed]
Until now we have always initialized the repositories, that containing MySql functions, at the beginning of each Form
Something like that
Form example code:
<...
- 127
4
votes
1
answer
204
views
User controller for a .net core WebAPI dating app
I have this user controller that follows the repository pattern. It works perfect, but is it easy to understand? Is this good quality work?
...
- 41
4
votes
3
answers
3k
views
Pass IEnumerable<T> as an argument of method and repository pattern
I've seen tutorials of Unit Testing and I've never seen that IEnumerable<T> used as an argument of method. All authors use ...
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-2
votes
1
answer
333
views
Repository Pattern and SOLID principles [closed]
I have written the following Repository in C#, using NetCore 2.2 and EF Core.
I was thinking how to write properly the Search method according to the SOLID principles.
This code gives a null ...
- 101
2
votes
0
answers
1k
views
Repository + Unit Of Work Pattern in WebAPI
I am refactoring my existing product's webapi part of the solution. Current Repo pattern does not allow me to add custom functions to a specific repository. In result, most of the functions directly ...
- 121
4
votes
0
answers
1k
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Generic Unit of Work implementation
I am implementing the unit of work pattern to be used in the logic layer of my application. The goal is to abstract away the tasks of managing transactions
/ connections.
My implementation relies ...
- 141
1
vote
1
answer
69
views
Laravel function to add a supplier, and associated addresses and contacts
I have a function addSupplier() that adds a supplier. Each supplier has multiple addresses and each address has multiple contacts.
...
- 111
1
vote
1
answer
50
views
Showing data for a chat with another user
I have a get route to show the data for a chat with another user. If an existing chat exists I want to return that, otherwise create a new chat and return it.
...
- 157
2
votes
1
answer
129
views
Repository of trainers
This is my first asp.net core web api and i did followed the Repository pattern but i don't know whether this approach is good practice.
...
- 133
1
vote
0
answers
2k
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Transaction integrity in asp.net core with entity framework and generic repository
I am not very experienced in Entity Framework, I previously used ADO.Net and Dapper for data persistence. For now, I only read Microsoft docs and watched a few video tutorials. I tried to stick to ...
- 131
3
votes
0
answers
3k
views
Structure and Implementation of Generic Repository and Unit of Work patterns with Dapper and SqlTransactions
I am attempting to update some legacy code that I work with, but my knowledge of data access is limited to a basic use of Entity Framework and simple Dapper. After some research, I have a loose ...
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3
votes
1
answer
60
views
Registering an event participant, using Entity Framework and several associated models
I have a method that is responsible for receiving an object and perform the information saved with Entity Framwork, using the Repository pattern. The issue is that this object is, basically, a DTO. ...
1
vote
1
answer
656
views
Cached Repository that can refresh all or a subset of the data
IReadOnlyCachedRepository<T>
...
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3
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0
answers
2k
views
1
vote
1
answer
1k
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ASP.NET Identity 2.0 UserManager alongside with UnitOfWork and Service-Locator anti-pattern
I was wondering whether it is a good aproach to have Identity 2.0 UserManager next to UnitOfWork pattern? I am using ...
- 123
5
votes
2
answers
5k
views
Repository pattern along with EF and Unit of work
I'm new to this Repository pattern and have seen lot of repository pattern + UoW implementations all over the internet and I'm not able to reach to a conclusion as to which of them is correct . After ...
- 51
2
votes
0
answers
1k
views
Entity Framework with two databases (with UoW, Repository and Service Layer)
I have two databases: one for a warehouse, second for the office (The db design is out of the scope of this question). There are MANY cross-database funtions. One of those functions is ...
- 43
0
votes
1
answer
82
views
Repository layer for MongoDB
I've implemented a quick and dirty repository to save and insert users to a MongoDB. As you can see, it just inserts one and finds one. Not a rocket.
The thing is I don't really know what are the ...
0
votes
1
answer
909
views
Entity Framework MVC updating db using a repository method [closed]
I have inherited this code from a legacy project, and it is throwing a
New transaction is not allowed because there are other threads running in the session.
error.
Now I know the problem here is ...
- 129
4
votes
1
answer
15k
views
Generic Repository without Entity Framework
Almost all of generic repository pattern tutorials were making use of EF, so I haven't got much sources to compare my code with. Here is what I have done. Could you please suggest me to fix my wrongs ...
- 131
7
votes
2
answers
22k
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C# - Entity Framework + Repository pattern + Unit of work pattern
After hours spent on reading various articles about correct way to implement Repository patter & UoW patters I finally think that I have managed to create (hopefully good) implementation.
The ...
- 231
3
votes
1
answer
334
views
Reduce boilerplate with RepositoryPattern
I'm refactoring a WPF application that uses Repository pattern to access the web services, I've got a tons of repository wrote as
...
- 165
3
votes
1
answer
229
views
Returning generic types from Repository
Is it bad design if I create repostory with methods that returns generic types. For example in AccountsRepository if I have:
...
- 31