We are getting the new requirement for a web based application which uses RESTful Web services. we are planning to use Play with Netty. Where to find the best documents and video materials to start the application from scratch.
Any tools are available to generate the skeleton of the project like maven archetype.
Play comes bundled with netty already. You can learn more about it at
http://www.playframework.org/documentation/2.0.1/Home
Don't go into mavenizing a Play application unless you have a good Maven level.
Paly! comes with all the stuff needed by the developpers.
Related
My goal is to create a framework that I will ship to our clients to use our code to achieve some functionality done by our library.
I had searched a lot to make a library using other dependencies as Alamofire or Google MLKit pods, but could not find a full tutorial on how to work on it.
Is it possible to do a library (framework) that depends on other dependencies? And is there a good tutorial to follow?
I'm about to build a web application in Play Framework and I'll need to have bidirectional communication between the server and the browser.
For modern browsers I can use web sockets, but for older browsers I will need to use long polling. Is there a library that will abstract away this choice and choose whichever one is supported by the browser? Similar to SignalR in .net.
It seems like the Atmoshphere library is absolutely what I was looking for. https://github.com/Atmosphere/atmosphere
Two good options nowdays:
SignalJ based on SignalR https://github.com/chanan/SignalJ using Akka and integrated in Play and with good integration with SignalJ web servers (based on .net)
Atmoshphere library https://github.com/Atmosphere/atmosphere that also supports Play integration and multitude of frameworks
I'm in the process of exposing some of the data generated in one OSGi bundle with a REST interface so it can be consumed with typical http requests afterwards by anyone. To do this I'm using a combination of apache-cxf, JAX-RS and Jetty (for testing purposes mostly).
My whole application is distributed in two ways:
Core: Runs a set of minimal bundles as an OSGi framework.
Full: Core + plus a set of plugins to be used within Eclipse, in a graphical way, to put it that way.
While in the Core launch configuration I can make this work without any problems, have a look at the MANIFEST:
Require-Bundle: cxf-dosgi-ri-singlebundle-distribution;bundle-version="1.3.1",org.eclipse.core.runtime, org.eclipse.osgi.services;bundle-version="3.3.0", org.mortbay.jetty.server;bundle-version="6.1.23", org.mortbay.jetty.util;bundle-version="6.1.23"
When I try to launch the Full distribution, jetty server does not seem to start and thus, the RESTful service is not working properly. Full distribution comes with a lot more plugins, mostly related with wizards, perspectives and so on. Root of this problem is somehow related with the cxf-dosgi-ri-singlebundle-distribution bundle, and can be tackled by "forcing" auto-start of this bundle to true, instead of default (check image below):
While this is OK, my question is ...why is this happening? And second and most important, I distribute the Full distribution via an update site, so users can download it, open perspective and start using it, that said, will this affect the final distribution? Is there a way I can control this auto-start=true for the apache-cxf bundle in the update site?
Hope I can make myself clear...
Thanks!
I don't like answering my own questions, but since I'm getting no feedback and maybe someone else has the same problem...here it goes
I decided to change the whole design of my restful bundle, by not using apache-cxf, since it is really not needed. All I need to do what I want is the embedded Jetty server and javax for dealing with HttpRequests and HttpResponses. Thus, I get rid of dependecies with third party libraries, leveraging the launching problems at the same time.
Got the ideas from these official sites in Eclipe:
Embedding an HTTP server in Equinox
Writing a bundle-based server application
Besides, a more hands-on tutorials can be also found here:
OSGi as a Web Server application
Extending Eclipse: displaying HTML content from a bundled archive
Special thanks to both authors for the enlightenment :).
I am looking for a robust REST framework to eliminate all that boilerplate code with starting up a new REST-only web service (mobile clients). Is there a framework that already has this built-in where I could, for example, simply build the domain models and run with it? I would like to see:
Authentication & User Model
Logging
Basic CRUD
Permissions (for model access)
Scalability
It seems every web service at a minimum needs the above capabilities. Somebody, somewhere must have written a good re-usable framework with the above capabilities. Any ideas? I would prefer Node.js, Java or even hosting with a PaaS service provider that offers these features.
Spring 3 MVC provides a very nice and simple annotation based framework for REST.
See http://blog.springsource.org/2009/03/08/rest-in-spring-3-mvc/ it can be deployed on any java web server like Jetty or Tomcat.
A framework like XAP provides a combined solution of Spring and Jetty plus it's built for dynamic scaling.
See http://www.gigaspaces.com/xap.
Last if you want to easily on board this solution on any cloud CloudifySource provides an open source project which includes XAP capabilities and PaaS.
See http://www.cloudifysource.org
I use Symfony 1.4 for this. It is an PHP framework. It generates most of what you need for free. The database stuff is also quite easy as the Symfony uses ORM libraries (you can choose but I can recommend Doctrine: http://www.doctrine-project.org/).
For example the whole backend site(admin) generating is a matter of running one command. They have a great e-book fro free. More info here:http://www.symfony-project.org/.
There is also Symfony 2.X (http://symfony.com/), which have a lot of new features (e.g. new Doctrine 2.0). Especially with the bundle (plugin) https://github.com/FriendsOfSymfony/FOSRestBundle is the RESTful service quite easy.
Is Google Web Toolkit is fine to develop database based web application or do you have any other suggestion?
Thanks to answerers!
For a heavy Database based web application, nothing beats Grails. Check out this tutorial by IBM. It will show you the power of Grails and how easy it is to develop database based web applications in minutes. I love GWT and smartGwt, but will go for them over pure grails only if there is a lot of non-database based front end (client side) logic.
If you do not have a programming language of choice (Grails is groovy based, which is based on Java), you could even look at Ruby on Rails which was the inspiration for Grails itself.
Alternately, you can add both grails and gwt in the mix by using this gwt grails plugin so that you have a powerful database integration, as well as a powerful front end developer. (I haven't used this though)
Sure, but you will need to create your own RPC service to get records from server to client and to deliver modified records back the server. But it isn't difficult at all.
Alternatively you could also use SmartGWT, which is an extension for GWT with more widgets, etc. They have data bound objects but in free version would would need to create your own data sources. If you decide to buy a license they seem to have database integration out of the box.
And additional note to consider with SmartGWT is that it has relatively big download size - about 3MB uncompressed and almost 1MB compressed (HTTP server should compresse it; it is in HTTP standard and it is transparent). So if it is going to be a service in public internet it might get quite long to load (often exceeding magic 8 seconds).
I had been working on GWT (Google Web Toolkit) for 1.5 years and learned that its a perfect platform for developing web application which uses backend database for its operation unless you have the right skill sets working on your project and a basic design which is developed according to the requirement of your project.