google-app-engine

Key command to restart google app engine dev server in eclipse?

Hi, I'm using app engine with java, developing in eclipse. Is there a way to bind restart of the server to a key? Something like ctrl+r will shut down and restart the server? Right now I terminate it manually, then need to restart it via all the context menus, it's eating a few seconds per restart, Thanks ...

Passing multiple parameter in app-engine Task Queue (JAVA)

Is there a way to pass multiple parameters in a Queue in google-app-engine? I use the code below Queue queue = QueueFactory.getQueue("sms-queue"); queue.add(TaskOptions.Builder.url("/SQ").param("id",pId)); in my servlet this id is retrievd as a query string. long pID = Long.parseLong(req.getParameter("id")); I need to pass 6 ...

app engine data pipelines talk - for fan-in materialized view, why are work indexes necessary?

I'm trying to understand the data pipelines talk presented at google i/o: http://www.youtube.com/watch?v=zSDC_TU7rtc I don't see why fan-in work indexes are necessary if i'm just going to batch through input-sequence markers. Can't the optimistically-enqueued task grab all unapplied markers, churn through as many of them as possible (r...

How to save user's daily progress?

Hello, I'm building an app where I'm trying to store the user's progress on a game. I want to be able to store the score of a player on a daily basis, and then retrieve the day's score when I look for the date. I wanted to store a dictionary in the database, with keys being the dates when the user played and the values being the score,...

Google App Engine: WARNING: failed Server@3d484a8a: java.net.BindException: Address already in use

I just started learning about servers, and I am messing around with Google's App Engine. I am trying to get through App Engine's tutorial located here using Eclipse on Mac, but I am getting a problem that reads: Jun 24, 2010 4:35:08 PM com.google.apphosting.utils.jetty.JettyLogger info INFO: Logging to JettyLogger(null) via com.google....

Google App Engine's remote_api: Deleting all data in django nonrel

I'm using django non-rel (http://www.allbuttonspressed.com/projects/django-nonrel) and am trying to delete all the data in my production's datastore. I was reading the question posed here http://stackoverflow.com/questions/1062540/how-to-delete-all-datastore-in-google-app-engine but the answer wasn't working for me. Is this because I...

.jsp file not working for Google App Engine guestbook tutorial

I've been following the Google App Engine tutorials, and I'm having a problem with the .jsp file. Here is the code from Google: Using JSPs. I'm using Eclipse to build my project, and for some reason when I add the guestbook.jsp file to the war directory, it instantly gets a red error icon. I can't double click to open guestbook.jsp eithe...

Sending mass mail without going insane (SendGrid? cloud?)

I need to send regular newsletters, as well as smaller batches, to a 10k strong mailing list, programmatically. We're currently exporting our list and then using Campaign Monitor's web interface to create and send the newsletters. Campaign Monitor is great, but it is simply too expensive. Sending just one email to the entire list costs ...

Java Google App Engine: What does @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) do/mean?

I just started learning server/database stuff on Java, and I was wondering what the piece of code @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) means/does. I am using Google's App Engine Thanks! ...

Update datastore in Google App Engine from the iPhone

I'm working on an app that communicates with Google App Engine to update and retrieve user information, but I can't think of a way to modify elements in the datastore. For example, every user for my app is represented by a User object in the datastore. If this user inputs things like email, phone number, etc into fields inside the iPhon...

Google App Engine - headers[] and headers.add_header() for cache control

What is the proper way to set cache control? Sometimes I see the use of headers[] self.response.headers["Pragma"]="no-cache" self.response.headers["Cache-Control"]="no-cache, no-store, must-revalidate, pre-check=0, post-check=0" self.response.headers["Expires"]="Thu, 01 Dec 1994 16:00:00" Other times, I see headers.add_header() self...

Automatic task execution on google app engine development server (python)

The docs for the python dev server say this about running tasks: When your app is running in the development server, task queues are not processed automatically. Instead, task queues accrue tasks which you can examine and execute from the developer console... But the release notes for version 1.3.4 of the python sdk (whic...

i m facing following error using first time eclipse

this error occurred what to do run the application?? Initializing AppEngine server 25/06/2010 9:16:57 AM com.google.apphosting.utils.jetty.JettyLogger info INFO: Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger 25/06/2010 9:16:59 AM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXm...

AppEngine development enviroment gives java.lang.VerifyError

I'm getting following error when I run my app on eclipse development enviroment, but when I deploy app to appengine it works fine. Is it possible to get this work in development enviroment? HTTP ERROR 500 Problem accessing /my-controller/. Reason: (class: org/datanucleus/TransactionImpl, method: internalPreRollback signature: ()V)...

can i use google login for my java application???

Hi all, Here i want to developed one application using google account login facility and i use google app engine for this any link or any tutorial for this?? ...

Entity exists, empty template is returned

I got the following very basic template: <html> <head> </head> <body> <div> <!-- Using "for" to iterate through potential pages would prevent getting empty strings even if only one page is returned because the "page" is not equal the query, it is a subcomponent of the query --> <div>{{ page.name }}</div> <div>{{ page.leftText }}</div> ...

Java Google App Engine: Do I need to make an object persistent before adding it to another persistent object's persistent data structure?

Let's say I have a class Employee and a class Company which holds a LinkedList of Employee objects, and I want to write a method that adds an Employee to the database in a specific Company. I create a new Company object and add it to the database with the new Employee if the Company does not already exit. Else, I add the new Employee to ...

Grails on google app engine

Hello, What is the current status of grails and google app engine deployment. I am new to app engine but wonder worth exploring it. Some specific qns are the latest plugin, which has high user rating, has any restrictions? or it work seamlessly with all gorm features is there any issue with high startup time for grails applicatio...

Why do I get TypeError: get() takes exactly 2 arguments (1 given)? Google App Engine

I have been trying and trying for several hours now and there must be an easy way to retreive the url. I thought this was the way: #from data.models import Program import basehandler class ProgramViewHandler(basehandler.BaseHandler): def get(self,slug): # query = Program.all() # query.filter('slug =', fslug) ...

Creating a model that references itself with Google App Engine

I tried doing the following class SomeModel(db.Model): prev = db.ReferenceProperty(SomeModel) next = db.ReferenceProperty(SomeModel) but got the following error NameError: name 'TrackPointModel' is not defined Is there a way of doing this? ...