Questions tagged with 'google-app-engine':
http://stackoverflow.com/questions/tagged/google-app-engine
I don't understand how to get java specific questions. It's not
useful and a huge waste of time to have to sort through the python
stuff for me. This sucks and it seems like google is
Search for google-app-engine java.
I still don't get it.
searching pulls up results that are seemingly unordered by time
using a Stack Overflow filter (to notify by email or display current
results) doesn't find java related posts.
YUCK.
It'd be nice to be able to just follow the java version
When you're searching, you can specify a tag by putting it in square
brackets. E.g. if you search for:
[google-app-engine] [java] spring
this will retrieve questions tagged with [google-app-engine] and [java], and
containing 'spring'.
Thanks Amy,
It's weird. Here's what worked.
We have two Business application running on AppEngine one of which we have
upgraded into HRD instance a couple of months before and other one was
upgraded into HRD instance a week before.Everything was working fine on them
but from past few days(after Friday) no mail is sending from these
I guess what I want to have is some kind of check and lock. My
question is how to implement an efficient lock on a distributed
environment like GAE. Transactions? Or better using memcache?
Is there a best practise how to implement that?
I'm not saying this is best practice but just throwing
We think we know what's happening. This is something that is happening at
app upload time. Can you try setting a new version name for your app, then
passing the --no_batch option when using appcfg.sh?
appcfg.sh --no_batch update [YOUR_WAR_DIRECTORY]
Seems to solve it. I can't reproduce the
If someone has a deterministically reproducible case that you can share with
us (project files and everything), it'd be very helpful for us to nail this
bug. We aren't able to do this with our test apps (big apps, small apps).
There's got to be some parameter that's different in your apps.
I
Is this the right way to get appengine logs in utf-8?
I tried downloading them but ... the file itself was not written as utf-8.
So I'm wondering about setting this in appengine-web.xml:
system-properties
property name=java.util.logging.config.file
Is this the right way to get appengine logs in utf-8?
I tried downloading them but ... the file itself was not written as utf-8.
So I'm wondering about setting this in appengine-web.xml:
system-properties
property name=java.util.logging.config.file
Hi,
It is possible to have the iPhone remember a web page to make it look like
an App. To do this you need to specify a manifest file to tell the iPhone
what to cache.
I think you are talking about html5 offline support -no?
Works with 'droid too right?
The .manifest file must have a header
Hello,
I consistently get:
Unable to update:
java.io.IOException: Error posting to URL:
https://appengine.google.com/api/appversion/clonefiles?app_id=fluency-upversion=428;
500 Internal Server Error
On a related note, are uploads to appengine (meaning deploying) very
slow. I was averaging
Hi,
http://code.google.com/p/googleappengine/wiki/WillItPlayInJava
I saw that DWR works on GAE. But whezn I do my test, I've this error:
This lists Version(s) 2.0.5, 3.0 RC1 as COMPATIBLE
I don't know all the details of 2.0.5 but 3.0RC1 creates threads to do
session cleanup and that will
Hi,
Do you have the contact information for the Apple Engineer?
He's contacted you, Toby, off list now. I got cc'd on the mail.
Let me know if for some reason you didn't get it.
Shawn
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Hi,
I used the open-jdk workaround to solve the problems introduced by the
latest apple java sdk update but have a question an Apple engineer
asked me about the following:
http://code.google.com/p/googleappengine/issues/detail?id=4712
Why use the JDO/JPA?
You don't need to use those.
For appengine you need to use BigTable.
JDO/JPA is one way to use BigTable.
There are others (that are easier to use but may not have the same portability):
http://code.google.com/p/objectify-appengine/
how can i fix this annoying error ?
web-resource-name}' is expected.
see the top link in the following search and just add a web-resource-name
http://docs.sun.com/app/docs/doc/819-3669/bncbk?a=view
Shawn
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I'm just here because i feel i need to rant a little. I came here expecting
way too much.
Been there with JDO -- the docs are not adequate.
I don't know your exact requirements but I suspect you'll find many on
this list who found objectify to be the simplest convenient interface
to the Google
Motivation: I am at the early stages of implementing a web app on GAE
using Java, but if I need to switch to Python, I shouldn't delay it
any more.
Anyway, what do you guys think?
IANAL but you asked so here goes. I think you are fine using java on GAE.
My guess is that since appengine is
I tried it but a call via http is still possible and wil not be
automatically redirected to the https protocol.
Are you using *.appspot.com? It doesn't work for a custom domain, does it?
Also Eclipse doesn't
like the url-pattern in web-resource-collection and marks it as
error.
adding
Hi,
About storage costs,
If I have say 25 GB in storage,
is this right -- 25 GB X $0.15/month = $3.75/month???
The docs here say:
http://code.google.com/appengine/docs/billing.html#Billable_Quota_Unit_Cost
Stored Data gigabytes per month $0.15
Other quotas are on a daily basis so I'm a
What happens if between logged in user navigates to another page and
the GAE instance was shutdown?
I understand a new instance is started but what happened to the
session data?
AFAIK session data is persisted to big table.
Also, how is startup/shutdown of instances related to
Why can't a filter start a session?
this.getThreadLocalRequest().getSession(); will find a session created
by a filter via request.getSession(true);
but request.getSession(true); doesn't seem so send a cookie to the client.
I really can't understand this. Help please
It looks like
What's the usage for in-memory caching via stick-cache?
It now supports bulk gets for all caches - i.e. memcache and datastore using
their respective bulk get methods
Aaah, stick-cache has dependencies on twig and
http://code.google.com/p/guava-libraries/
The utilities from twig can be
Hi,
I have a filter set for all requests. Yet the first request to GAE
seems to bypass the filter. Why/How could that be?
I do have a welcome file set
welcome-fileMyAppGAE.html/welcome-file
but shouldn't that get called by the following filter
filter-mapping
Hi,
Please read the second paragraph of:
http://code.google.com/appengine/docs/java/gettingstarted/staticfiles.html
You'll need to exclude your files from static-files in appengine-web.xml
if you are relying on a custom filter for authentication purposes.
Thanks.
IMHO it should be
Hi John,
There is also a CompositeCache class that allows you to layer the caches so
that it first checks in-memory, then memcache , then the datastore. Puts go
to all levels and cache hits refresh the higher levels. e.g. if an item is
not in-memory and has been flushed from memcache but
Secure Connection Failed
An error occurred during a connection to ikai-openid-demo.appspot.com:
80.
SSL received a record that exceeded the maximum permissible length.
(Error code: ssl_error_rx_record_too_long)
Same on firefox and Chrome on OSX
Http works, https fails.
Also, is there
I am using dwr and objectify framework to get the arraylist of string
from datastore.
But I am getting error.
java.lang.RuntimeException: java.io.NotSerializableException
Well beyond that have you really gotten dwr to work in appengine. If
so, it must be a pretty old version.
AFAIK, dwr
It's boggled my mind from day 1 why instances
aren't loaded in the background. I always assumed it would be addressed
What is difficult to understand?
1 server has X resources
warmed instanced require Y resources
X - YN = resources left over for the server to fulfill requests.
By reducing
This seems pretty basic. Can somebody wake me from this nightmare?
Sorry, been there...
If I was starting over, I'd seriously think about:
http://code.google.com/p/objectify-appengine/
for two reasons:
1) Objectify entities can be used in GWT without the need for Data
Transfer Objects.
2) it
My Java App anticipates few requests, but a lot of processing. Hence
it was designed to be multi-threaded. Since the multiple threads are
not allowed in GAE max request processing time is only 30 secs with
Task Queues, I'm looking at my options:
1. How do you develop high background
Error in meta-data for my.syncdroidserver.Box.boxID: Unsupported
primary key type: int
http://code.google.com/appengine/docs/java/datastore/creatinggettinganddeletingdata.html#Keys
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Well this won't help to use id as an array index but...
* As you've probably figured out, the datastore natively only
supports two types of id, Long and String
* Only Long will autogenerate
Key will autogenerate too won't it!
and from the api:
long
Yes its like a official release I can breathe again.
Then move back original question. How should I teach
Eclipse of this update?
Can't you just update eclipse?
Sorry I am writing from japan so Dec-5th is japan time and it means
Dec-4th US west coast.
Actually I'm in Japan (Tokyo) myself.
Hi,
Some said GAE did not support DWR while I had read about
Will it play in App Engine.It showed that
Direct Web Remoting (DWR)
Version(s): 2.0.5, 3.0 RC1
Status: COMPATIBLE
DWR uses threads for some things like reverse ajax. For sure, that
will not work in appengine at least the way
And So is it become
official version at Dec-5th?
I think so. Well Dec 4th.
http://groups.google.com/group/google-appengine-java/browse_thread/thread/18e49b1559752fae/fdf7c0bc29d6e74d?lnk=gstq=App+Engine+SDK+1.2.8+released+including+new+Admin+Console+features#fdf7c0bc29d6e74d
Shawn
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see http://tinyurl.com/yzhwl6p
It's a known issue with upgrading. Look at the top result.
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