Mongo with Play-Framework is new for me. I have Spring-Framework background, In which we create Controller, Business and DAO layer structure applications. Now, i want to taste the flavor of Play-Framework with ReactiveMongo. For create our sample Application, my first target is to follow Controller, Business and DAO layer structure. Play-Framework already provide the basic structure of application, which is really good. If we use Mongodb with Play-Framework, I found three types of MongoDB Drivers. These are as below:
Mongo Module (https://www.playframework.com/modules/mongo-1.1/home)
MongoHelper (https://gist.github.com/harmeetsingh0013/fdc9c20b056a62f303f5)
ReactiveMongo(http://reactivemongo.org/)
ReactiveMongo, which is really awesome for implementing non-blocking I/O. In reactive mongo there are some problem with sync the data from multiple queries. I have some queries for creating sample application as below:
My first target is to implement MVC using ReactiveMongo, which i think ReactiveMongo-Extension provide me Dao layer. But i still want to confirm, ReactiveMongo-Extension is a good approach ? or I need to go for MongoHelper? What is the benefit of Mongo-Module over reactive mongo?
For dependency Injection we need to go for Spring-Dependency Injection or Guice or other Scala Dependency Injection Framework ?
If i am go for ReactiveMongo, we need to go for JSONCollection because BSONCollection is MongoDB Dependency. What is the support for JSONCollection available?
Current modules repository on playframework.com is just for Play 1.x. So Mongo Module is not an option for you.
I am the author of ReactiveMongo-Extensions and it is highly inspired from MongoHelper. You can use which one you want. If you choose ReactiveMongo-Extensions JsonDao is your friend. There is also an example application which you can check out: https://github.com/mertkavi/play-reactivemongo-extensions-sample
BTW I am currently developing a newer driver from scratch. You may also give it a try: https://github.com/fehmicansaglam/tepkin
Related
I am new in play framework 2.
I have play 2 with scala and MongoDb requirement.
I searched lots on Play 2 and MongoDb connection, but didn't find any useful documentation.
There is lots of plugins available eg. Casbah, Reactive Mongo, Salat. So which is best for use, and which have better future?
If i want to implement my own connection to Mongo without using third party plugin, is it possible?
Please give examples and document on Play 2 and MongoDB connection.
I suggest using ReactiveMongo as its non-blocking approach is similar to how Play itself works. The API works with scala Futures which is a a really nice fit with Play's Async actions. You can also use their macros to convert case classes straight to BSON sparing quite some boilerplate code.
A lot of time has passed but I would like to share an update for those, who may search for Scala MongoDB client library for Play Framework.
Reactive Mongo is great but still lacks Play Framework 2.4 integration and MongoDB 3.0. We have waited for a long time thus wrote a library that wraps original MongodDB client in the Scala style way and is similar to Reactive Mongo in the api. Take a look at https://github.com/evojam/play-mongodb-driver. With the Play Framework module it's pretty straightforward to start, like few minutes to get working code.
This way MongoDB is nice and easy to use in Scala. We have provided a comparison of the sample query execution is in our blog post about the driver on site.
I want to do an application in Scala, with a MongoDB database. I found some tutorials to use it with ReactiveMongo, I wrote my classes, but I want to test it and I don't understand how to do a simple request; to add a user for example, or find him.
What is the right method to use?
You could use the Activate framework. It supports ReactiveMongo with a simple usage interface for queries and modifications.
Using it, is also easy to switch to other types of databases, like postgre and mysql.
http://activate-framework.org/
It uses transparent persistence with efficient memory usage, providing a simpler persistence paradigm with high scalability. Take a look at http://databen.ch
Do you want ReactiveMongo or just want to use mongodb on scala. If it's the lastest, try http://mongodb.github.io/casbah/tutorial.html
Is what we use in our projects...
We are making a web based application in Java that should be accessible to any device and so we zeroed in for Restlet for our REST based web service need.
For UI we are thinking of Freemarker together with Twitter bootstrap and database will be mongoDB. And guice for dependency injection.
Since I am new to most these technology stack, do you think this is fair choice for a long run. Also, for database mapper framework we decided to use Jongo it seems lightweight. Kundera is an option but it has lots of dependency. What you expert say ?
"Kundera is an option but it has lots of dependency." Not sure what do you mean by this statement? could you please explain it more?
Please take a look at https://github.com/impetus-opensource/Kundera/wiki/Kundera-Mongo-performance for performance using Kundera!
It really depends on your needs
REST Framework :
IHMO you should test at least theses 3 JAX-RS Frameworks : RestEasy / Jersey / Restlet and choose the one according to your needs.
JAX-RS Frameworks
https://stackoverflow.com/questions/1710199/which-is-the-best-java-rest-api-restlet-or-jersey
UI :
I've worked with Jersey + Freemarker through a framework called Webengine from Nuxeo, it was ok.
Nevertheless, you should consider a rich client approach based on Javascript/CSS/HTML (see Backbone.js, Ember.js)
Pros :
With such approach you could expose JSON REST services using a JAX-RS Framework (instead of freemarker/html services) .
Theses services can be consumed by a web application and/or native mobile apps (ios, android).
Cons:
Your team must have advanced javascript skills (this blog can help )
Database :
What kind of data do you need to store ?
MongoDB is document-oriented and flexible enough to cover lots of needs
As you said, Jongo is a lightweight API (500 lines of code + 1 dependency) over mongo-java-driver.
It allows you to query MongoDB as if you were in MongoShell (ie. with plain json/bson queries) and map your object using jackson.
This question is a good example: Mongo DB query in java
Relying on Restlet Framework for your RESTful web API/service backend sounds like a good choice for a multi-devices application. FreeMarker is very powerful and flexible so you should be in good company there as well.
I don't know too much about the other pieces of your stack.
I am working on a play framework project with scala in which I want to have Scala domain classes (or even Java domain classes) using MongoDb as data store.
I want maximum performance while serving hundreds of thousands if not millions of requests per day.
Since both scala language and Play framework is adding new features by the month, what is the best answer in terms of latest production version of the modules mentioned in the question
and play framework 1.2.2, scala 0.9.1+ and scala language 2.8+?
for anyone stumbling upon this question and using playframwork 2.1.x or above I highly recommend taking a look at reactivemongo site and github project.
It's a mongodb scala driver that allows asynchronous db operations.
Great performance and mature enough for use in production.
At the time of writing this the current version is 0.9 and is being used by us in production without any problems.
I use Morphia module, a MongoDB integration for Play! 1.2.x
For scala I would suggest you have a look at https://github.com/novus/salat
I've written a play plugin for salat which you can find here https://github.com/leon/play-salat
Good luck!
Is it based on mongoDb java driver ?
Can I use it when the domain model is scala program in version 1.2.2RC1+ of play framework?
Please note that questions that may have been answered before may not be relevant to play framework version 1.2.2RC1+.
If you are looking for a high level Java client for MongoDB, Give Kundera (https://github.com/impetus-opensource/Kundera) a try. It’s a JPA based client library for Cassandra, Hbase and MongoDB. There is a pretty good example here: https://github.com/impetus-opensource/Kundera/wiki/Getting-started
Morphia does run on top of/uses the mongodb java driver. All java ORM solutions do. I don't see why it would be a problem to run it in Scala. I have no experience with the "play framework".