423 questions
2
votes
1
answer
64
views
Is using IServiceProvider impactful with base controller in .NET
Is it good practice to pass service provider to our controller ?
Method No 1 :
[Authorize]
public abstract partial class BaseSecureController : Controller
{
private readonly IServiceProvider ...
- 491
1
vote
1
answer
84
views
What does serviceLocator() mean in GetIt?
I am trying to master GetIt. First I read the official documentation. Then I came to articles by different authors. Finally, I took a working code to get some practice.
And I don't understand the ...
- 159
0
votes
2
answers
386
views
Using scoped services (ie DbContext) from two scopes without service locator
I need to write some service with method that needs to perform two units of work, where second one will be preformed even if first failed and was rolled back.
Creating and rolling back transaction is ...
- 1,344
-2
votes
1
answer
191
views
What are bad sides of using Symfony's ServiceLocator? [closed]
The college told me that sometimes I overuse ServiceLocator in Symfony 5.4 project.
I never considered that possibility. Everything seems straightforward => you get services from the container as ...
0
votes
1
answer
734
views
Hive adapters and boxes with Get_it how should i regester them into getit
I have always issues with hive boxies instances and the error of not initilizing the box or adapter
so I decided to register them in one place and use it all over place .but I don't event know how to ...
1
vote
1
answer
2k
views
Symfony - How do I get services dynamically from the container?
For an API project I want to fail very early, before the controller is dispatched, if the input data is incorrect. I've managed to get the validation done by using the route defaults and an event ...
- 25.7k
2
votes
1
answer
877
views
My .NET 7 app is unable to resolve the service for a type. Already added scoped to DI
If I already registered the service in DI what am I missing?
Error:
System.InvalidOperationException: Unable to resolve service for type 'Contoso.API.Services.AccountService' while attempting to ...
- 21
1
vote
1
answer
135
views
how can i use jar of another project in my project at run-time in spring-boot without mentioning it to the pom.xml of my project
I want to create a project in spring boot in module pattern, there are four modules in my project moduleA, moduleB, moduleC and moduleD.
moduleB contains the a interface.
moduleC and moduleD contains ...
- 11
1
vote
1
answer
165
views
Combining dependency injection with service locator
In the following example, a service locator is used to inject dependencies over classes. Is that in any way better approach than resolving dependencies within the class and keep the initialiser (or ...
- 4,417
0
votes
1
answer
791
views
Unable to use Get It background callback
I have a flutter app that has a background listener but I keep getting an Unhanded exception.
Here is my main()
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
...
- 1,771
0
votes
2
answers
2k
views
Object/factory with type DataServiceManager is not registered inside GetIt
Hello I'm currently building a Over Complicated Todo flutter app and I came across this error:
E/flutter (25502): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: 'package:...
- 36
0
votes
2
answers
313
views
Creating <interface, imiplementation> map/container in C++11?
Is there a way in C++11, to create a container with map of interfaces as key and implementation classes as value of that key. What I want to do, is to be able to bind interfaces with certain ...
3
votes
0
answers
1k
views
Flutter: General confusion about dependency injection, service locator, get_it, provider and bloc
Assumptions(please check, I am probably stupid):
As far as I read, the Dependency Injection Pattern and the Service Locator Pattern, are both 2 ways to achieve Inversion of Control. The package '...
- 75
15
votes
5
answers
20k
views
how can I route using GoRouter in Flutter without context?
The problem I want to solve:
My app which uses GoRouter needs to be able to route to a named route from within main(). Since most routing is of the form 'context.go' I cannot do so within main.
...
- 547
0
votes
0
answers
512
views
Make bloc instances global across a Flutter app and access them by some identifier in a dependency injected fashion way
I have multiple model objects delivered by some data source in my Flutter app, each is identified by its ID (an integer field).
Each model and its state can be represented in multiple widget.
I'm ...
- 342
0
votes
1
answer
218
views
How can we use service locator in custom flutter library or package?
I want to split my app into features and each feature in a package, so how can we apply dependency injection using get_it in each package individually
"each package represent a feature containing ...
0
votes
1
answer
1k
views
how to solve getit shared preferences error?
I'm trying bloctesting for my project and getting the following error:
'package:get_it/get_it_impl.dart': Failed assertion: line 372 pos 7: 'instanceFactory != null': Object/factory with type ...
- 337
0
votes
0
answers
236
views
Spring framework customize ServiceLocatorFactoryBean with complex type
I am trying to customize the way we use service locator pattern to have more complex type
@Configuration
public class VehicleConfig {
@Bean
public FactoryBean<?> factoryBean() {
...
- 13
4
votes
1
answer
695
views
Passing dependencies the "right way"
When injecting dependencies into a constructor, I'm not quite sure if it breaks SOLID if I do the following:
public MyClass(IConfiguration configuration)
{
_port = configuration.GetValue("...
- 76
0
votes
1
answer
2k
views
How get_it flutter package deals with Garbage Collector as it registers all the instance at start
I have a naive question, I have read about the flutter dependency injection package get_it, it registers all the instances at start like the service locator design pattern, my question is how it ...
- 203
0
votes
0
answers
39
views
How to overcome cyclic dependency of IEnumerable without Service Locator or Lazy<T>? [duplicate]
I have a dependency of IEnumerable<ITransform> which is used like this
class A
{
public A(IEnumerable<ITransform> transforms) {...}
}
I have a bunch of ITransform implementations that I ...
- 1,809
2
votes
3
answers
631
views
Use a specific instance of a class inside an isolate
I am using an isolate through the compute() method to fetch, parse and sort datas from an API (around 10k entries).
My method getAllCards() is defined inside a class YgoProRepositoryImpl which has an ...
- 7,268
1
vote
1
answer
2k
views
Flutter/Dart get_It singleton locator method failure
I have a simple dart class as follows:
import 'package:flutter/material.dart';
class UiUtils {
// TEMPORARY FOR UNIT TEST PURPOSES ONLY
int addition(int x, int y) {
return x + y;
}
}
(Note:...
- 977
0
votes
1
answer
443
views
Avoid Service locator in strategy design pattern [closed]
Take a look on that pseudocode
class A,B,C implements StrategyInterface
{
private dep;
constructor(Dep dep) {
this->dep = dep;
}
}
class StrategyResolver
{
private ...
- 315
2
votes
1
answer
2k
views
How to use get_it for Provider.of<ExampleProvider>(context)?
I am new to flutter and I am trying to use get_it package for DI. I want to understand how can I replace my dependance on the Inherited Widget with get_it.
My code looks like this:
I have a locator ...
- 307
5
votes
1
answer
949
views
Can't initialized GraphQl Client in flutter using Get_it
I want to implement GraphQL client in my flutter app. For Dependency injection, I use GetIt library. But when I run the app, it says
'Invalid argument (Object of type HomeGraphQLService is not
...
- 2,589
0
votes
0
answers
45
views
Inversion of Control and deep dependencies
[Edited to narrow down the question scope]:
For simplicity sake, I have a Winforms application:
main function opens FormA
FormA has a button that creates and opens FormB
FormB needs to send something ...
- 1
6
votes
2
answers
3k
views
can't initialized Shared Pref using GetIt in flutter
I want to implement a session management system using Shared Preference in my flutter app. For Dependency injection, I use GetIt library. But when I run the app, it says 'flutter: Error while creating ...
- 2,589
0
votes
1
answer
152
views
Converting an unruly dependency injection model with a service locator
I've been using DI for a game engine project for a while and I just hit a wall; given the below order of creation: The job system does not depend on anything and everything depends on the file logger. ...
- 10.9k
0
votes
1
answer
759
views
Is calling IServiceProvider.CreateScope from within a Hosted Service an anti-pattern?
Recently I have been looking at the following StackOverflow question.
There is an answer there suggesting a read at Microsoft's documentation and especially the paragraph Consuming a scoped service in ...
1
vote
0
answers
75
views
Is there a way to copy or clone Koin scope as new scope instance?
Using Koin library I'm trying to achive this behaviour:
val scopeA = getScope(ID)
val scopeB = scopeA.clone()
Short speaking, clone() should copy all instances from one scope to another.
So in this ...
- 73
1
vote
0
answers
992
views
Flutter Null property in viewmodel using provider and get_it
Im developing a user authentication flow in flutter using firebase auth.
I have the basis of the app which allows user login, home, password reset however i'm stuck while developing a profile screen ...
- 1,418
1
vote
1
answer
1k
views
C# ASP.NET Core alternative to an extension method to register services
I have a problem with my AspNet Core application, I had an extension method to register configurations, on an external library, as in the example:
public static AuthenticationBuilder AddSaml2PIdP(this ...
- 862
4
votes
3
answers
5k
views
How can I register the async object to get_it package without making the main() async?
I want to register the SharedPrefrences object in the get_it package to access it from all around the app and not make the main() async.
Is it the right way?
How can I do it?
This is how I did it, ...
- 4,923
-1
votes
2
answers
99
views
C++ general question on OOP Design, how to access member of object in the top of hierarchy from bottom
I have a Class A, in the class there is some important member (lets call it someVeryImportantNumber) and also objects of class B. In class B there are objects of class C and so on..., similar to a ...
- 155
2
votes
0
answers
374
views
SolrNet - Using Dependency injection doesnt call the Startup.Init<T> method
Using Solrnet in my .NET core project through dependency injection as -
services.AddSolrNet<T>("http://localhost:8983/solr");
And injecting it through ISolrOperations<T>
As ...
- 25
1
vote
0
answers
728
views
Resolution of IServiceProvider Services Lifetime within Injected Instance
In my asp.net core I would like to inject IServiceProvider into conroller and resolve services explicitly.
What is the lifetime of the resolved services? Are they scoped in the controller's OR totally ...
- 3,075
0
votes
1
answer
1k
views
ServiceLocator with Autofac in asp.net core 3.1
I'm developing an asp.net core 3.1 webapi application and i'm using Autofac as DI container.
For one particular case i cannot use ConstructorInjection nor propertyinjection nor methodinjection. My ...
- 75
7
votes
3
answers
10k
views
Flutter - Using GetIt with BuildContext
I'm using Localizations in my app based on the flutter documentation.
See here: https://flutter.dev/docs/development/accessibility-and-localization/internationalization
I use get_it package (version 4....
- 623
4
votes
0
answers
200
views
Proguard: how to proguard META-INF/services interface and impl names?
Proguard: how to proguard META-INF/services interface and impl names for service loader?
e.g.
META-INF/services/com.example.Foo
com.example.impl.FooImpl
Is there a way for proguard to obfuscate the ...
- 5,488
0
votes
0
answers
396
views
How to implement DI in Xamarin Forms w/o using a Service Locator pattern?
When I do DI in MVC, I can do it without out using a service locator pattern in any of my own code. However, as I understand it, under the hood there is a service locator pattern that's already being ...
- 3,707
0
votes
2
answers
860
views
Spring service locator without autowiring it
Having this code:
public class ClassA {
private InterfaceB interfaceB;
private int a
private int b;
public ClassA(int a, int b) {
this.a = a;
this.b = b;
}
}
...
- 595
1
vote
2
answers
988
views
Problem with JNDI look-up in WildFly 17: java.lang.ClassCastException: class is in unnamed module of loader
I use Wildfly 17 and have a couple of stateless EJBs, one of which causes me sometimes ( but not always) problems upon JNDI lookup. This is my EJB:
@Stateless
public class AVeDBService {
//other ...
- 1,459
15
votes
2
answers
8k
views
Flutter Bloc state change is not updated UI with get_it
I've been building a login/authentication feature using a combination of this login tutorial and the resocoder clean architecture tutorials. It's 99% working perfectly, but it is not responding ...
- 555
0
votes
2
answers
1k
views
How to handle very long XPATH? Is there any alternative for this?
emphasized text
//div[@class='preheader']//following-sibling::table/tbody/tr[7]/td/table[1]/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr[4]/td/table/tbody/tr/td[1]/...
1
vote
1
answer
901
views
Koin: Why after myObject.scope.close(), it still works?
I have a scope
scope<MyObject> {
scoped { Presenter() }
}
Then when I get presenter, this works.
val presenter = myObject.scope.get<Presenter>(Presenter::class.java)
Similarly, ...
- 59.7k
0
votes
1
answer
831
views
How to move from ServiceLocator to Dependency Injection? Specific example
The problem is moving from the ServiceLocator anti-pattern to Dependency Injection. In view of my inexperience, I can't shift the DI principle to the code implemented now.
Summary
The Summary ...
- 1,403
0
votes
1
answer
2k
views
C# .net core conditional construction of dependency objects
I am creating a ASP.NET Core Rest API application.
On Controller, depending upon the value of parameter we need to create request processor {job of the processor is to further process the request and ...
- 7,540
0
votes
0
answers
283
views
Store a Unity Dependency Injection Container without Service Locator
I have an application that has lots of external dependencies on hardware systems. I want to unit test the services that interact with these hardware systems so I am abstracting the external portion of ...
1
vote
0
answers
209
views
How to create a library that uses DI inside and use in a project that doesn't use DI?
Hy guys,
I need to create a library in a project, which uses DI internally, like that:
Library
namespace Library
{
public class SomeService : ISomeService
{
private readonly ...
- 11