In my profiler reports I'm increasingly seeing the results of mock-based testing with dependency injection. Many of the dependencies were static, but because we want to test methods in isolation they are changed to instance members, like the following example: class ShortLivedThing { IDependency1 dep1; IDependency1 dep2; IDepe...
Hello, I have read a lot of articles on Dependency Injection as well as watched a lot of videos, but I still can't get my head around it. Does anyone have a good analogy to explain it? I watched the first part of the Autumn of Agile screencast and still was a little confused. ...
I want to declare two beans and instantiate them using Spring dependency injection? <bean id="sessionFactory" class="SessionFactoryImpl"> <property name="entityInterceptor" ref="entityInterceptor"/> </bean> <bean id="entityInterceptor" class="EntityInterceptorImpl"> <property name="sessionFactory" ref="sessionFactory"/> </bean> But...
I am extending my Object Property Value Diff but I realized if an object has too many properties I may not want to diff them all. So I came up with the public class IgnorePropertyDiffAttribute : System.Attribute { } so that I can mark the properties I want the diff to ignore. However I don’t want to pollute my domain object with [Ign...
I'm working with Ninject on a web application, using the BasePage and BaseMaster from the frameworks's integrations. What I would like to do is have an object injected and have a new instance created on each session. I've looked at the OnePerRequest behavior and it's close, but not quite. What I'm doing is performing a lot of calculati...
With the latest additions to our dependency injection framework (annotations in spring), the marginal cost of creating DI-managed components seems to have hit some critical new threshold. While there previously was an overhead associated with spring (tons of XML and additional indirections), dependency injection seems to have started goi...
I've been a fan of EasyMock for many years now, and thanks to SO I came across references to PowerMock and it's ability to mock Constructors and static methods, both of which cause problems when retrofitting tests to a legacy codebase. Obviously one of the huge benefits of unit testing (and TDD) is the way it leads to (forces?) a much...
Right now I'm trying to figure out a way to do things smarter, and in the course of doing so all i've managed to do is use a full bottle of excedrin in a single day. Assume i have an interface called IRepository like so. public interface IRepository<T> { T Get(int id); void Add(T value); void Update(T value); void Del...
Consider the following class public class SchemaExecutor: ISchemaExecutor { public SchemaExecutor(SqlPlusSettings sqlPlusSettings) { _sqlPlusSettings = sqlPlusSettings; } ... And container configuration ObjectFactory.Initialize( x => { SqlPlusSettings sqlPlusSettings = GetSqlPlusSettings(); x.ForRequestedT...
Google/MyBrain are failing me. Without using a framework (which I'll never get past my colleagues), how do you inject a dependency into an HTTPModule given that you (the programmer) are not in control of creating the instance? Are we into hacking up custom web.config sections + reflection or is there something cleaner I'm not seeing? e...
Has anyone seen any how-to, documentation, or otherwise about how to load HTTP Modules dynamically for IIS? Basically what I am trying to do is to load HTTP Modules, which I'll call HTTPModuleA, HTTPModuleB, and HTTPModuleC. The modules however could be changed out at any time with HTTPModuleD, HTTPModuleE, or HTTPModuleF. I basically...
Hi, Is their any IoC controllers available that will work on .NET Compact Framework? ...
I'm writing a new .NET library for internal use at my company that will use IoC through Dependency Injection. Naturally, this library will be much easier to use if we use an IoC Container to resolve instances. However, the code that will be making calls into this library does NOT currently use Dependency Injection of any sort, and refa...
Simply put, if you had to use a IoC/DI container, thats easy to deploy (not a big fan of using config/xml file for everything), stable, good documentation and supports .net, which one would it be? It could just be me but too many xml files like one for the app, a few for ORM, a few for another component kinda gets overwhelming at times....
I often read about dependency injection and I did research on google and I understand in theory what it can do and how it works, but I'd like to see an actual code base using it (Java/guice would be preferred). Can anyone point me to an open source project, where I can see, how it's really used? I think browsing the code and seeing the...
Apache Felix's SCR allows to declare (via annotations or XML) components that will then be instantiated, hooked up to their dependencies, and registered as OSGi services. It is also possible to skip the service registration part, and just have SCR create the component (by specifying @scr.component, but omitting @scr.service). I was thin...
I'm trying to build my own inversion of control container. Right now I store the objects with their types in a dictionary and resolve a reference when asked. But I want to make it possible to resolve a reference or a new instance. I can create a new instance with the Activator class. But, what if the constructor of the object to resolve...
Something a lot of programmers seem to be abiding by is Convention of Configuration. In the context of IoC this means using the API instead of XML configuration. How are you supposed to keep the loose coupling idea behind DI/IoC when you have to reference the DLL containing the concrete implementations of the abstract interfaces/classe...
I recently was asked to troubleshoot some performance problems in an application built with Microsoft's Composite UI Application block - specifically that it was taking too long to load. This is built around Microsoft's ObjectBuilder dependency injection framework, which uses reflection/attributes to register classes. Profiling indicate...
I'm planning to start on a new project and am looking at the current state-of-the-art Java web frameworks. I decided to build my application around Guice, and am likely to use a very lightweight ORM like Squill/JEQUEL/JaQu or similar, but I can't decide on the web framework. Which one would fit best in such a lightweight environment? And...