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• What are some strategies to add spell checking to a Google App Engine program?

  - by btol45

  I'm working on a Google App Engine program that will require some basic spell checking features. Normally iSpell or it's cousins would be options, but I'm not sure that will work in GEA. Are there other strategies/tools that would work in that environment?

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• Is it possible to run locally JRuby on Google App Engine without restarting server on every change?

  - by elado

  Unfortunately, GAE requires restart of the server on each code change. Is it possible to prevent it and have immediate feedback after code save? Or, can I import Google App Engine's API into my ruby code and run it on Sinatra server? Tried this but it fails on "import com.google.appengine.api" (it doesn't know what 'com' is). For Sinatra, I use "Rerun" ( http://github.com/alexch/rerun ) which restarts server immediately after a change with minimum wait. Thanks.

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• Designing a Business Rule Engine

  - by Nisha_Roy

  I have a requirement where there are 10 Rules to be applied on data in excel. If Rule 1 and Rule 2 fails rest of the rules are not checked. But if Rule 1 and Rule 2 passes the rest of all the Rules should be verified and if any errors found- they should be logged. Is there any design pattern which I can use to keep this Rule Engine flexible for adding these 10 rules and Closed for any additional chains in the Current Rule. I was thinking of something like a Decorator Pattern. Will this help me achieve that?

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• Google I/O 2012 - App Engine Overview

  Google I/O 2012 - App Engine Overview Doug Orr, Jesse Jiang, Alexander Power Be the first to hear about the exciting new platform products which you can use to work better in the cloud. Discover how the Google Cloud Platform is expanding to meet your current and future needs. Learn how the over 150k developers in startups and businesses building mobile, games and modern web apps are already enjoying the benefits of the platform. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1781 16 ratings Time: 54:04 More in Science & Technology

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• Closest Java equivalent of ActiveMerchant that would work on Google App Engine?

  - by Chuck

  I want to build ecommerce functionality on Google App Engine for Java. What Java payment gateway library works closest to ActiveMerchant (from Ruby on Rails) and also works on GAE?

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• How to use Google app engine with my own domain (not subdomain)?

  - by Mark

  Hi all, After hours of reading about and experimenting with DNS records I can access my Google app engine app via these URLs: myappid.appspot.com www.myappid.myowndomain.com What does not work: myowndomain.com www.myowndomain.com I want to be able to serve my app directly off my domain and not a subdomain. I've seen apps that do this. Is there any way to do this without a URL redirect? Thanks, Mark

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• Recommended 2D Game Engine for prototyping

  - by Thomas Dufour

  What high-level game engine would you recommend to develop a 2D game prototype on windows? (or mac/linux if you wish) The kind of things I mean by "high-level" includes (but is definitely not limited to): not having to manage low-level stuff like screen buffers, graphics contexts having an API to draw geometric shapes well, I was going to omit it but I guess being based on an actual "high-level" language is a plus (automatic resource management and the existence a reasonable set of data structures in the standard library come to mind). It seems to me that Flash is the proverbial elephant in the room for this query but I'd very much like to see different answers based on all kinds of languages or SDKs.

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• Easy way to authenticate POST requests from a Google Android client to Google App Engine?

  - by ehfeng

  I'd like to be able to send a POST request from an Android app to App Engine and have it linked to the user's Google account. I read that you need to obtain an authentication token and send it with the POST request. Does Android provide a way to request this token? And how would GAE process it? I feel like this should be easy and I'm missing something obvious. Thanks!

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• How do i set the max heap size in google app engine?

  - by LoudNPossiblyRight

  I just deployed my servlet on the app engine but when i print the max heap size i only get 104857600 which is less than is available by default on my local machine (512 megs). Is there a way to get google to change this? I looked at billing but there is no mention of memory usage.

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• how to get size of entity in google app engine without fetching the entity ?

  - by iamgopal

  how to get size of entity in google app engine without fetching the entity ( with only key ? ) ?

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• The underlying mechanism in 'yield return www' of Unity3D Game Engine

  - by thyandrecardoso

  In the Unity3D game engine, a common code sequence for getting remote data is this: WWW www = new WWW("http://remote.com/data/location/with/texture.png"); yield return www; What is the underlying mechanism here? I know we use the yield mechanism in order to allow the next frame to be processed, while the download is being completed. But what is going on under the hood when we do the yield return www ? What method is being called (if any, on the WWW class)? Is Unity using threads? Is the "upper" Unity layer getting hold of www instance and doing something?

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• What is the value set for X-Forwarded-For header by Google App Engine URL Fetch ?

  - by Tahir Akhtar

  Documentation says (http://code.google.com/appengine/docs/java/urlfetch/overview.html#Request_Headers): These headers are set to accurate values by App Engine, as appropriate Does the value for X-Forwarded-For included some identity of the gae application?

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• What is the best language to use for building a fulfillment engine [on hold]

  - by John Stapleton

  I asked this on stack overflow and was suggested to move it here. I do understand it is a matter of opinion which is exactly what I aim to achieve here... I wanted to know what you think is the best language to write a fulfillment engine in? I cannot provide much detail but I am trying to build a control interface for servers and i wanted to build a program daemon that would process data on the authoritative server and the slave servers( the backbone of the network) with their own daemons running would check regularly(every 5 minutes or so) with the authoritative server and process the commands(securely) I am trying to build this with a minimal footprint(cpu and ram wise for the slaves, authoritative is going to be scalable) and to make it automated so that the user does not have to configure the daemon(installation is automated by the authoritative server) I am leaning away from my usual php set up for simplicity sake. Edit: I am not an expert in any particular language but flexible enough and willing to learn another.

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• Mix2010: Search Engine Optimization (SEO) for Microsoft Silverlight

  I had a great time today in my Mix2010 session on SEO for Silverlight.   You can find all the slides (more than I was able to cover in the talk) here.  and the the full play-by-play of the demo (include a link to the completed solution).    I started off talking why SEO matters Then I talked about three tips   You can view the site live by using Bing for my foodie Explorer Cooking Class with Joe.. or the other guys search engine equally well. ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Implementation of a Rules Engine in Your Business Applicaitons

  - by enonu

  I'm for an experience driven answer from a few software engineers who have implemented a rules engine in their internal business applications. How has it affected your business in the following ways: Ability to launch and iterate over business driven logic Ability to have "business users" perform the actual modification of those rules rather than developers. Ability to comprehend the business rules in general. Quality of the software releases. More or less bugs from the end-user's POV? Speed of the applications. If you had to do it all over again, what would you do differently? Lastly, I'm looking for a qualification of your answer w/ respect to the architecture. Would you do the same thing if you were deploying to a 1-machine setup vs. your architecture vs. a multi-tier cloud-based distributed architecture using 1000s of machines? How would it be different? Thanks!

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• Passing data between engine layers

  - by spaceOwl

  I am building a software system (game engine with networking support ) that is made up of (roughly) these layers: Game Layer Messaging Layer Networking Layer Game related data is passed to the messaging layer (this could be anything that is game specific), where they are to be converted to network specific messages (which are then serialized to byte arrays). I'm looking for a way to be able to convert "game" data into "network" data, such that no strong coupling between these layers will exist. As it looks now, the Messaging layer sits between both layers (game and network) and "knows" both of them (it contains Converter objects that know how to translate between data objects of both layers back and forth). I am not sure this is the best solution. Is there a good design for passing objects between layers? I'd like to learn more about the different options.

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• DL Reasoner vs Rule Engine: can you explain the difference?

  - by soontobeared

  Hi, Can someone explain the differences between a DL Reasoner like Pellet/deafult OWL Reasoner and a rule engine like Jess? and their applications ? Thanks.

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• On App Engine, what does optimization for reads mean?

  - by Honza Pokorny

  In the documentation for Google App Engine, it says that when designing data models for the datastore, you should "optimize for reads, not writes". What exactly does this mean? What is more 'expensive', CPU intensive or time consuming?

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• How do I get Phusion Passenger to work with Django for App Engine?

  - by Mike

  I'm having a devil of a time getting Phusion Passenger to work with django-nonrel for Google's App Engine. I can seem to get it to work for GoogleAppEngineLauncher and for the production server but not Passenger; or for Passenger and GoogleAppEngineLauncher but not the production server; or for Passenger and the production server but not GoogleAppEngineLauncher. How do I get my app to deploy on all three?

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• How do i execute system commands in google app engine?

  - by LoudNPossiblyRight

  I am trying to execute simple system command via my servlet on google app engine. I'm not trying anything dangerous, just looking for simple stuff grep, sed, wget, find, etc. Using java's Runtime class i keep getting access denied exceptions. Do i have to get permission from google of some kind or are shell commands banned period?

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• Mustache vs other engines. Maybe I should use another template engine?

  - by marcioAlmada

  I'm passing an object to mustache and this object has a method with one parameter. Is something like this possible with Mustache and PHP? {{object.method(parameter)}} If it gets too laborious to achieve this with Mustache, what template engine would you recommend? Remember I need to pass parameters to object methods while in the view context (like we do with helpers). The nearest as possible to mustache syntax is welcome.

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• How do I upload a files to google app engine app when field name is not known

  - by Michael Neale

  I have tried a few options, none of which seem to work (if I have a simple multipart form with a named field, it works well, but when I don't know the name I can't just grab all files in the request...). I have looked at http://stackoverflow.com/questions/81451/upload-files-in-google-app-engine and it doesn't seem suitable (or to actually work, as someone mentioned the code snipped it untested).

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• Google App Engine - Does the non-main version of an App not receive as many resources?

  - by Spines

  I'm doing performance tests on my app engine app. I'm doing it on the non main version of my app. Do loading requests take longer for the non main version of an app?

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• Consequences of an infinite loop on Google App Engine?

  - by Axidos

  I am not a Google App Engine user. However, I understand you're billed for CPU time and other resources. What are the consequences if you happen to create an infinite loop? Will Google ever terminate it, or will you have to do it yourself manually somehow? I'm a hobbyist developer worried about a small error that might end up costing hundreds.

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• How can I do the same thing over and over every 1-4 seconds in google app engine?

  - by synapz

  I want to run a script every few seconds (4 or less) in google app engine to process user input and generate output. What is the best way to do this?

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