I have just briefly looked at this as a possible technology to use for a mobile app I have ini mind but can any one tell me do I need to be paying a support subscription to use the GWT-RPC jar. I briefly looked at an RPC tutorial and this is the impression I get?
You can develop and distribute Titanium for free. You don't need to pay or to subscribe for anything.
Only if you want support or using special features (ACS Cloud Services, Modules) you'll need to pay.
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we are developing an application using HTML/CSS and using the Angular framework. The problem is that we are quite a ways in to development and our client is switching to SAP, I have looked and looked and all I can find is information about SAPUI5 and Fiori. Is there a way we can still use our Angular app as a Fiori application or would we have to switch everything to SAPUI5, it sounds like a lot of work for a custom application that is practically done but I'm not an SAP expert so I was hoping someone could provide some insight around working with Fiori apps.
Thanks -
in general it is probably a good idea to choose either one of the frameworks. Changing to SAP is a bit general, i assume you do mean here SAP HANA cloud platform? If so there is no reason, why you would not be able to use angularjs to continue your application and just use the backend data services via for instance an odata service (which also should be present for a lot of other SAP applications, there is also SAP Gateway to enable this).
So all in all i think it will be possible to go ahead with angularjs, at the end also SAPUI5 is just a frontend framework.
Quick search on sdn.sap.com brings up some interesting articles that might be of help for you like the following.
http://scn.sap.com/community/developer-center/front-end/blog/2013/12/15/openui5-or-angularjs-how-about-both
In addition to what is mentioned in AirBorne04 answer, if you continue to build AngularJS application consuming oData services provided by SAP backend, you will loose all the features provided by Fiori Launchpad (which are many btw). See the link https://help.sap.com/saphelp_uiaddon10/helpdata/en/f9/51b50a07ce41deb08ced62711fe8b5/frameset.htm
Technically, this is not an issue but suppose if your customer wants to implement Fiori Launchpad then it will be an issue. So I suggest that you inform the customer about this in advance so that there are no surprises later on.
I have just started to work with google app engine, and I would like to see real projects, which use this service. These projects should be written in Java (desirable)
If anyone has a link (GitHub or other link with information) I will be very grateful
UPD:
i find only link with companies who are using Google Cloud Platform to build robust and scalable apps
Check out the guestbook sample: https://github.com/GoogleCloudPlatform/appengine-guestbook-java
I don't think you will find the actual source code of any real/live site.
I'm the maintainer of thundr, a lightweight java webmvc specifically designed for cloud and PaaS deployments.
I've built a lot of apps on top of thundr, the majority being appengine apps. I know of at least 40 or so apps built and deployed on appengine using the framework, of varying scale.
One of them is listed on the cloud.google.com/customers/ list.
There are many real projects running in this environment, however I agree you're not going to have much luck finding source for people's services.
My project amounts to a vertical Q and A site not unlike Quora. Just as on Quora, I want users to be able to follow other users and follow topics. All questions will be tagged in one of 15 topics.
If Google App Engine is not a good framework for this sort of project, what would you suggest? I have also considered Django and Amazon Web Services.
It is important to note that I have minimal programming experience (primarily in Java and MySQL). However, I am willing to learn whatever language would be most useful.
I guess I am really just asking what is the benefit of using the web2py framework instead of just working directly with the Google App Engine.
If your target platform is exclusively GAE probably the only real advantage of web2py is its form generation/validation/processing capability and the pure python template language.
The real advantage of using web2py in your case would be the portability of code because of the DAL. If you find out that GAE is not for you and want to run with MySQL on a VPS, you would not need to rewrite more than one line of code (the one that connects to db), except for GAE specific (or mysql specific) optimizations.
web2py has some useful developer tools like the wizard which can reduce your development time in some cases.
You wouldn't want to work directly with the Google App Engine; that would require writing CGI code which would be an awful lot of unnecessary work. You'd want to use some sort of WSGI-compliant framework, eg, Django, web2py (as you mentioned), or webapp (the simple framework provided by Google for use with GAE).
I have no experience with webapp, but I have some limited experience with Django and web2py. I have not used either on GAE. As I understand it, web2py supports GAE better out of the box than Django.
Personally, I prefer web2py because I found myself fighting against the framework more when I used Django (eg, can't write python code in Django templates). I won't get into all the differences (there are plenty of questions on SO that address them).
Bottom line: I prefer web2py.
I am creating a website with a friend to try and make some money. Basically, we want to let users aggregate data from different social networking site's APIs (FaceBook, Twitter, etc.) and do some cool things with the data.
My non-developer friend is sold on the Google App Engine because it costs nothing at first, and then you pay as your traffic/data increases. I am torn. I like being able to bootstrap the business like that and have no startup costs (other than time) but I am worried about learning a whole new "programming world" as Joel Spolsky would put it.
I am so comfortable with C#, ASP.NET MVC and SQL Server that I think moving to something like Java or Python on top of BigTable would end up taking about 3x longer to develop (if not more).
Can anyone give me some guidance on this? Basically, I am wondering if there is any way I can have the following with the Microsoft stack:
Free hosting up to some limit of traffic
Ability to scale out at a cost similar to what Google offers with GAE (maybe the hosting service would need to have support for a good scalable persistence solution--like Couch DB?)
For #1, I am OK if that means hosting it on my own server for the ALPHA/BETA phases. For #2 I am hoping that there is a good hosting service out there who can put me on shared hosting servers and charge by the traffic. Does that exist? Thanks!
Unfortunately when it comes to a similar platform then you won't find a MS Stack version. Windows Azure comes close but this is more akin to Amazon's EC2.
The python stack in GAE is really easy to use and was able to make the transition quite quickly. Django is a MVC that is really popular and quite simple to use. It also gives you a ORM to write to BigTable which means you don't actually have to care about it.
The Java implementation is very similar and you can use really well know MVC frameworks for creating your app like Spring
I am also a .NET expert, but I have been using Python-AppEngine for hobby/entrepreneurial purposes specifically because it allows me to bootstrap an new web application at no initial cost. That is critical for me, as I have no budget at all for side projects, and so far, with many deployed AppEngine applications, I haven't spent a penny on it.
Learning a new language can seem like a drag at first, but I have come to find my new expertise in Python to be invaluable. Remember that the best and most employable developers are usually generalists with a broad and flexible palette of skills. My resume features C# and .NET as well as Python and Ruby/Ruby on Rails, and I have gotten very positive reaction from potential clients and employers.
Learning Python was dead easy. Getting a handle on WebOb and Django templates took more effort, but nothing extraordinary. Over time, I built up my own framework layer on top of those things that incorporates the best ideas from Rails and ASP.NET MVC that I missed. You can take a look at it on Google Code, and you will see a number of ideas that specifically borrowed from ASP.NET MVC.
I'm looking for tips, suggestions, advice or examples of applications build using Google's Web Toolkit with Google AppEngine.
Since Google AppEngine now supports Java using GWT just became a whole lot easier (ie. you can use GWT RPC).
Take a look this screencast.
Here's a screencast on the subject: Using Java (GWT) with Google App Engine
Functionality seems very limited though since GAE uses Python + JavaScript and not Java.
Can you elaborate more on why using GWT with the Java version of GAE would necessarily be a good idea?
I'm not arguing against it, and it seems obvious Java would be the way to go, but just wanted to hear the concrete reasons.
To answer my own question: GWT provides an interface called "GWT RPC" that allows you to talk directly to Java Servlets, therefore offering an amazing level of integration between client and server.
The crux of the problem with GWT and GAE is that you want to use JDO to persist your objects when using GAE, and the bytecode manipulation done by the nucleus (JDO implementation) makes your domain objects no longer work with "GWT-RPC".
Today, the best solution is probably the Gilead GWT adapter for Google App Engine which is currently under early stage.