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update info about dependency injection

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Anton Keks 2020-05-18 00:24:48 +03:00
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@ -79,14 +79,11 @@ Angry IP Scanner source code is in the net.azib.ipscan Java package.
### Dependency injection
Angry IP Scanner uses [dependency injection pattern](http://en.wikipedia.org/wiki/Dependency_injection) in its design,
provided by the [Dagger 2](http://google.github.io/dagger/), which was chosen for working at compile time.
PicoContainer is not used anymore.
Angry IP Scanner uses [dependency injection pattern](http://en.wikipedia.org/wiki/Dependency_injection) in its design.
Dependent classes are created automatically using the constructor injection by the [Injector](https://github.com/angryip/ipscan/blob/master/src/net/azib/ipscan/di/Injector.java) class.
Dagger uses `javax.inject` annotations, thus all classes that can be injected must have an @Inject-annotated constructor.
Dependent objects that are required to be provided by the injection are then either annotated as fields or constructor parameters.
Injector creates instances recursively, so classes themselves don't have to worry where their dependencies come from.
This eases both development and unit testing of the code. No frameworks nor annotations are used for this anymore.
Dagger then resolves these dependencies automatically, so that the classes themselves don't have to worry where their dependencies
come from. This eases both development and unit testing of the code.
Components are registered in the [ComponentRegistry](https://github.com/angryip/ipscan/blob/master/src/net/azib/ipscan/core/ComponentRegistry.java) class.
Classes that cannot be auto-created or found are registered in the [ComponentRegistry](https://github.com/angryip/ipscan/blob/master/src/net/azib/ipscan/core/ComponentRegistry.java) class,
including implementations of Feeders, Fetchers, and Exporters.