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app/it/unifi/cerm/playmorphia
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README.md

PlayMorphia Play 2.7.x Module

This is a Play 2.7.x Module for Morphia (a MongoDB Java driver wrapper).

Installation

Add the following to your build.sbt:

libraryDependencies ++= Seq(
guice,
"org.mongodb" % "mongo-java-driver" % "3.9.1",
"xyz.morphia.morphia" % "core" % "1.4.0",
    )

Create a lib folder in your project directory and copy play-morphia.jar inside.

You will need to specify your MongoDB configuration in the conf/application.conffile:

playmorphia {
    uri="mongodb://127.0.0.1:27017/"
    database="YourDB"
    models="models"
    mongoClientFactory="controllers.mongoConfiguration.MyMongoClientFactory"
}

MongoClient Factory

Not all MongoClient options are supported by the MongoClientURI. For full customization of the generated MongoClient, you can specify your own MongoClientFactory class in the playmorphia section of the conf/application.conf, like this:

mongoClientFactory="controllers.mongoConfiguration.MyMongoClientFactory"

(I created a package inside controllers named mongoConfiguration)

The value should be the name of a class that extends from it.unifi.cerm.playmorphia.MongoClientFactory and provide at least an empty constructor or a constructor that takes a play Configuration. For example:

package controllers.mongoConfiguration;

import com.mongodb.MongoClient;
import com.mongodb.ServerAddress;
import com.typesafe.config.Config;
import it.unifi.cerm.playmorphia.MongoClientFactory;

import java.util.Arrays;

public class MyMongoClientFactory  extends MongoClientFactory {

    private Config config;

    public MyMongoClientFactory(Config config) {
        super(config);
        this.config = config;
    }

    public MongoClient createClient() throws Exception {
         return new MongoClient(Arrays.asList(
                 new ServerAddress("localhost", 27017)
                 )
         );
     }

    public String getDBName() {
        return config.getString("playmorphia.database");
    }

}

Usage

Play Framework 2.7.x

A way to use PlayMorphia is to create a repositories package containing repository classes, one for each model. A repository class contains all methods to access to the collection members. The package structure should be similar to the following:

|- controllers
|- models
|- repositories

Model example:

import org.bson.types.ObjectId;
import xyz.morphia.annotations.Entity;
import xyz.morphia.annotations.Id;

@Entity(value = "DB.users")
public class User  {

    @Id
    private ObjectId _id;
    private String firstname;
    private String lastname;
    private String email;

    public ObjectId getId() {
        return _id;
    }

    public void setId(ObjectId _id) {
        this._id = _id;
    }

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    public String getLastname() {
        return lastname;
    }

    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

Repository example:

package repositories;
       

import it.unifi.cerm.playmorphia.PlayMorphia;
import models.User;
import org.bson.types.ObjectId;

import javax.inject.Inject;

public class UserRepository {

    private final PlayMorphia morphia;

    @Inject
    public UserRepository(PlayMorphia morphia) {
        this.morphia = morphia;
    }

    public User findById(String id) {
        User user = morphia.
                datastore().
                createQuery(User.class).
                field("_id").
                equal(new ObjectId(id)).
                get();
        return user;
    }

    public void save(User u) {
        morphia.datastore().save(u);
    }
}

Controller example:

import views.html.modifyUserView;

public class UserController extends Controller {

    @Inject
    private UserRepository user;

    public Result modifyUser(String id) {
        User u = user.findById(id);
        return ok(modifyUserView.render(u));
    }
}

Contact

If you have a question or need some help you can just open an issue.

License

The license is Apache 2.0, see LICENSE.txt.

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