Usage patterns/use cases for DI or when to start using it

Posted by Fabian on Stack Overflow See other posts from Stack Overflow or by Fabian
Published on 2010-06-17T23:49:51Z Indexed on 2010/06/17 23:53 UTC
Read the original article Hit count: 172

Filed under:

dependency-injection

|

domain-object

I'm not sure for which use cases one should to use DI in the application. I know that injecting services like PlaceService or CalculationService etc fits very well but should I also create my domain objects with DI like a User? What is if the User has only one constructor which requires a first and lastname. Is this solveable with DI?

Should I use DI to create the instances for Set/List interfaces or is this pure overkill?

I use guice primarily.

© Stack Overflow or respective owner

Related posts about dependency-injection

How does dependecy injection increase coupling?

as seen on Programmers - Search for 'Programmers'
On the Wikipedia page on dependency injection, the disadvantages section tells us this: Dependency injection increases coupling by requiring the user of a subsystem to provide for the needs of that subsystem. with a link to an article against dependency injection. Dependency injection makes… >>> More
SubCut Scala Dependency Injection Framework

as seen on Gooder Code - Search for 'Gooder Code'
It’s no secret I am a fan of dependency injection. So I was happy to hear that Dick Wall of the Java Posse recently released a dependency injection framework for scala. Called SubCut, or Scala Uniquely Bound Classes Under Traits, the project is a ‘mix of service locator and dependency… >>> More
Dependency Injection Constructor Madness

as seen on Stack Overflow - Search for 'Stack Overflow'
I find that my constructors are starting to look like this: public MyClass(Container con, SomeClass1 obj1, SomeClass2, obj2.... ) with ever increasing parameter list. Since "Container" is my dependency injection container, why can't I just do this: public MyClass(Container con) for every class… >>> More
Using a Dependency Injection Container in an enterprise solution with multiple different configurati

as seen on Stack Overflow - Search for 'Stack Overflow'
Can anyone point me towards some good documentation / code examples on how best to manage the configuration of a DI container in a scenario where you need different configuations sets? We have a layered, distributed application that has multiple entry points (ie; a website, winforms app, office plugin… >>> More
What are the downsides to using Dependency Injection?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to introduce DI as a pattern here at work and one of our lead developers would like to know: What - if any - are the downsides to using the Dependency Injection pattern? Note I'm looking here for an - if possible - exhaustive list, not a subjective discussion on the topic. >>> More

Related posts about domain-object

Android - Convert Color Resource to Color in Domain Object

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a domain object, where I created a method to return a text color based on the internal state of the domain object. I have defined the colors in a color.xml file as resources. The problem I have now, is that I would like to return a Color object instead of a resource ID from the domain object… >>> More
Design for a plugin based application

as seen on Programmers - Search for 'Programmers'
I am working on application, details of which I cannot discuss here. We have core framework and the rest is designed as plug in. In the core framework we have a domain object. This domain object is updated by the plugins. I have defined an interface in which I have function as DomainObject doProcessing(DomainObject… >>> More
Designing An ACL Based Permission System

as seen on Programmers - Search for 'Programmers'
I am trying to create a permissions system where everything is going to be stored in MySQL (or some database) and pulled using PHP for a project management system I am building. I am right now trying to do it is an ACL kind of way. There are a number key features I want to be able to support: 1… >>> More
Maintaining both sides of self-referential many-to-many relationship in Grails domain object

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm having some problems getting a many-to-many relationship working in grails. Is there anything obviously wrong with the following: class Person { static hasMany = [friends: Person] static mappedBy = [friends: 'friends'] String name List friends = [] String toString() { … >>> More
Cast LINQ Function Result to Domain Object

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I have a table valued function to perform full text search on SQL server. The result type of my full text search function in LINQ is a special autogenerated type which includes KEY and RANK in addition to my regular domain object properties. So, if my regular domain object is PERSONS (with… >>> More