Java Container - IoC

The Java Container is a lightweight library for managing dependencies and performing dependency injection, based on the service container of Laravel.

Binding

The bind method binds an interface to a concrete class. When the Mail.class is resolved, a Mailgun.class is returned.

import static be.dem.container.Container.bind;

public void register() {
    bind(InterfaceB.class, ConcreteB.class);

    bind(Mail.class, Mailgun.class);
}

Once a singleton binding is resolved, the same object instance will be returned.

import static be.dem.container.Container.bindSingleton;

public void register() {
    bindSingleton(Config.class);
}

Resolving

There is no difference between resolving a basic binding or a singleton.

import static be.dem.container.Container.resolve;

public void someMethod() {
    // mail is a Mailgun object
    Mail mail = resolve(Mail.class)
    
    // config is a singleton object
    Config config = resolve(Config.class)
}

Installation

Maven:

<dependency>
  <groupId>be.dem.container</groupId>
  <artifactId>java-container</artifactId>
  <version>0.1.0</version>
  <type>pom</type>
</dependency>

Gradle:

compile 'be.dem.container:java-container:0.1.0'

Development

There is a Dockerfile that specifies all the requirements to test, build and publish the library.

$ docker build -t java-container . 
$ docker run -it --rm -v ${PWD}:/usr/src/app --name java-container-app java-container

Testing

$ ./gradlew test

Building

$ ./gradlew build

Todo

• Example showing automatically Constructor Argument Injection

Credits

• Robin Malfait
• Demian Dekoninck
• All Contributors

License

The MIT License (MIT). Please see License File for more information.