This module filling the gap between Ninja framework and MongoDB. In a few simple steps you can integrate MongoDB support into your application. Beside this you get automatic object mapping provided by Jongo and Jackson libraries.

Add module dependency to you pom.xml:

<dependency>
    <groupId>com.hexwit.ninja.jongo</groupId>
    <artifactId>ninja-jongo-module</artifactId>
    <version>1.0.0</version>
</dependency>

Install the module in your conf.Module:

protected void configure() {
    // This installs the NinjaModule and handles the lifecycle
    install(new NinjaJongoModule());
}

Add MongoDB connection url to your application.conf file like:

mongodb.uri=mongodb://localhost:27017/dbname 

See connection string URI format on the MongoDB official site.

To get access to mongo's collections you need just ask for injection, and provide collection name:

@Singleton
public class UserDAO {
    @InjectMongoCollection(name = "users")
    MongoCollection users;

    public User getById(String userId) {
        return users.findOne("{_id: #}", new ObjectId(userId)).as(User.class);
    }
    
    public boolean isEmailRegistered(String email) {
        return users.count("{email: #}", email) > 0;
    }
}

• Ninja: http://www.ninjaframework.org
• Jongo: http://jongo.org
• MongoDB: https://www.mongodb.org