Questions tagged [repository]

For questions about the implementation of the repository design pattern.

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.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, ...
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1 answer
119 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 ...
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2 votes
1 answer
78 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: ...
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1 vote
1 answer
110 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 ...
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0 answers
900 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 ...
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  • 121
5 votes
2 answers
2k 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 ...
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42 views

Should my class "data" dependency be a repository, adapter or another pattern?

I have a class called CheckUserUltraSecretInformation that is kind of a Use Case in "clean architecture terms", this class has a dependency that is ...
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2 votes
1 answer
320 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 ...
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2 votes
1 answer
68 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 ...
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1 vote
0 answers
42 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). ...
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4 votes
2 answers
1k views

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 ...
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6 votes
1 answer
89 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 ...
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  • 257
3 votes
1 answer
893 views

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: <...
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  • 183
2 votes
0 answers
339 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 ...
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  • 394
2 votes
0 answers
63 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 ...
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4 votes
0 answers
71 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 ...
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3 votes
1 answer
2k 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 ...
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1 vote
1 answer
615 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
152 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 ...
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3 votes
1 answer
103 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? ...
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2 votes
0 answers
55 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 ...
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1 vote
1 answer
132 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. ...
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2 votes
0 answers
98 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 ...
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1 vote
0 answers
307 views

C# Generic Repository and Unit of Work Implementation for Northwind [closed]

I have created 3 projects to implement layered architecture design mainly the - Presentation Layer (Web) - Domain Model Layer - Infrastructure Layer For simplicity, I have only two domain model ...
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-2 votes
2 answers
49 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: <...
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4 votes
1 answer
187 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? ...
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4 votes
3 answers
2k 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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  • 553
-2 votes
1 answer
303 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 ...
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  • 101
2 votes
0 answers
986 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 ...
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  • 121
4 votes
0 answers
1k views

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 ...
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  • 141
1 vote
1 answer
60 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. ...
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1 vote
1 answer
48 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. ...
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2 votes
1 answer
121 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. ...
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  • 133
1 vote
0 answers
2k views

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 ...
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  • 131
1 vote
0 answers
224 views

E-commerce site for posting advertisements

I am developing an e-commerce website in ASP.NET MVC. Users can post advertisements of different types on the site. I am using inheritance to define my Ad types, and this review is mainly about ...
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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
55 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. ...
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1 vote
1 answer
576 views

Cached Repository that can refresh all or a subset of the data

IReadOnlyCachedRepository<T> ...
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3 votes
0 answers
2k views

My implementation of repository pattern in Laravel 5.6

...
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  • 293
1 vote
1 answer
1k views

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 ...
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  • 133
5 votes
2 answers
4k 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 ...
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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 ...
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0 votes
1 answer
69 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 ...
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0 votes
1 answer
896 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 ...
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  • 129
4 votes
1 answer
13k 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 ...
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  • 131
7 votes
2 answers
21k views

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 ...
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3 votes
1 answer
320 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 ...
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  • 175
3 votes
1 answer
129 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: ...
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1 vote
1 answer
11k views

Using dapper Unit of Work in 3-tier architecture

The Unit of Work: ...
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2 votes
1 answer
2k views

Generic repository with UoW and simple injector

I'm implementing a generic repository + UoW pattern with EF6 and simple injector. I feel there is room for improvements. Please let me know if I left out some relevant code, I tried to keep it breif. ...
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