Dynamic CDI
Guice
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Dynamic CDI | Guice | |
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0 | 31 | |
9 | 12,328 | |
- | 0.3% | |
0.0 | 7.5 | |
about 3 years ago | 2 days ago | |
HTML | Java | |
Apache License 2.0 | Apache License 2.0 |
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Dynamic CDI
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Tracking mentions began in Dec 2020.
Guice
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Inversion of Control Containers and the Dependency Injection Pattern (2004)
> Dependency injection has always been such a bad name for the concept. It is just passing dependencys as arguments.
No.
Dependency Injection means using tooling to "inject" the dependency, instead of passing an explicit argument.
https://github.com/google/guice
> Think of Guice's `@Inject` as the new `new`.
Like many architecutral design patterns, toy examples don't illustrate the concept well. It's used for doing things like switching a large service-based system from using external databases and remote services for production, to in-memory everything for testing.
“There are many advantages to using dependency injection, but doing so manually often leads to a large amount of boilerplate code to be written. Guice is a framework that makes it possible to write code that uses dependency injection without the hassle of writing much of that boilerplate code”
This is a common misconception. Guice’s docs delineate between dependency injection as a pattern and Guice as a framework that supports that pattern.
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Handling two contexts
Usually each context has a different scope and lifetime associated with it. Here, it sounds like there are two distinct scopes: server and request (cf. how Guice models scopes: https://github.com/google/guice/wiki/Scopes). It is rarely sensible to merge the scopes or contexts together. If we think about a context, it contains several things:
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Dependency Injection in Scala - cake pattern
using libraries from java world, such as Guice;
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Dependency injection with AWS Lambdas in java
As said in the title, we will focus on the dependency inversion principle and one of its application : dependency injection. For production-ready applications, it would be better to rely on a framework and not implement its own container. For it, the java ecosystem have 3 frameworks available : Spring, Guice and Dagger.
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"My Reaction to Dr. Stroustrup’s Recent Memory Safety Comments"
And it doesn't really matter whether you have created circular reference structure of whether you have messed up your binding and now objects which was supposed to disappear after one request is only doing that when all database connections are quiescent (which happens easily in testing, but may not happen for days in production).
- ᚣ the Rune Programming Language
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Ask HN: Google Guice another abandonware from Google?
https://github.com/google/guice/issues/1536
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What is something you made in Java to automate/make your job easier?
... with guice or Spring Boot,
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About design patterns: Dependency Injection
The following section is an example of injecting our service using Guice, a dependency injection framework for Java made by Google. The concept is to reference bindings of every component you can inject in your program, so that the library can generate a class of any type, automatically.
What are some alternatives?
Dagger2 - A fast dependency injector for Android and Java.
HK2
Weld - Weld, including integrations for Servlet containers and Java SE, examples and documentation
Apache DeltaSpike - Mirror of Apache Deltaspike
Feather - Lightweight dependency injection for Java and Android (JSR-330)
butterknife - Bind Android views and callbacks to fields and methods.
Governator - Governator is a library of extensions and utilities that enhance Google Guice to provide: classpath scanning and automatic binding, lifecycle management, configuration to field mapping, field validation and parallelized object warmup.
Toothpick - A scope tree based Dependency Injection (DI) library for Java / Kotlin / Android.
Tiger