Now i write import data into datastore and clean datastore.
When I import data - i upload zip file to servlet, into servlet I
unzip it and create some tasks for import data.
First time, every task in first run can't access to datastore:
03-29 09:49AM 25.793 /ImportTask 500 10067ms 0cpu_ms 0kb
I can't read it.
I can read it by API, I can see it into app engine server datastore
viewer, but in local datastore viewer i see ???.
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Same problem for me as well. :( Back to 1.3.1 until someone can share
a fix...
On Mar 30, 12:28 am, julianc julian.coom...@googlemail.com wrote:
Similar problem here. Upgraded to 1.3.2 error, switched back to
1.3.1 ... everything fine again.
Mar 29, 2010 11:24:44 PM
Hi again.
I had a look at jiql.
jiql is a JDBC wrapper for accessing Google DataStore on Google App
Engine for JAVA.
jiql supports the use of standard SQL as a method for accessing
the DataStore
Even if I had seen jiql earlier I wouldn't have considered it anyway
because,
1. I want the API to
Hi Andreas,
slim3 is more than just a datastore framework)
You can use Slim3 as just a datastore framework.
Please see
http://sites.google.com/site/slim3appengine/slim3-datastore/using-slim3-datastore.
Thanks,
Yasuo Higa
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That's all the code that deals with google services in my whole
application. The exception is raised on the following instruction:
[code]
CalendarEventFeed resultFeed = calendarService.query(myQuery,
CalendarEventFeed.class);
[/code]
What about the environment? You are saying that I might have
Hi Andreas,
Excellent article! I've posted it to the App Engine reddit:
http://www.reddit.com/r/AppEngine/comments/bk4kt/datastore_frameworks_the_interview/
Please feel free to post the followup article(s) there, too, to make sure
they get a wide distribution!
-Nick Johnson
On Mon, Mar 29,
Hi,
I faced a problem while i was deploying my application in Google app
Engine.My problem is that,
Unable to update app: Error posting to URL:
http://appengine.google.com/api/appversion/create?app_id=lakshmisowjanyanakkalaversion=1
409 Conflict
Another transaction by user sowji.apr10 is already
Hi Dave,
A very straightforward solution: call getHardwareAddress() of
java.net.NetworkInterface.
NetworkInterface is part of the JRE class white list for GAEJ:
http://code.google.com/appengine/docs/java/jrewhitelist.html
This way, you get the MAC address of the network card of the machine.
Hi,
You can try Cloud2db also. Please see the website http://www.cloud2db.com.
This works with any JDBC client tools/frameworks like Squirrel,
PowerArchitect, Hibernate in a client/server mode. This also works on Google
App Engine server with native JDBC driver.
Thanks,
Sandeep.
On Tue, Mar
Andreas,
I don't get it. You can use JDO and Hibernate with SQL. Given that
jiql has a Hibernate config file, I guess using Hibernate with jiql
would be so easy.
What does GWT and JSP have to do with SQL anyway?
Cheers,
Guillermo.
On 30 mar, 03:51, Andreas Borglin andreas.borg...@gmail.com
Jeff,
I think you are confused. You can use Hibernate and JDO on top of SQL.
Since both CloudDB and jiql provide a SQL interface to the datastore,
you could use either JDO or Hibernate on top of either CloudDB or jiql
and it should work flawlessly.
Cheers,
Guillermo.
On 30 mar, 04:51, Jeff
Hi Jeff,
You mentioned in your post about splitting your large requests into smaller
requests and then collate the results. This is exactly how Cloud2db JDBC
client driver works. For example if you have a large number of entities in
your datastore which you want to process. You can just write a
Well, both Baz and Shawn are correct.
Shawn is correct from the economical point of view. Baz is correct from the
techinical point of view (no sane user would wait 15 seconds for a page to
appear, right?).
The great thing is that both can be done at the same time. Warmed instances
can be brought
Hey chaps,
Apologies if I've been looking in the wrong place in the docs for
this. I'm trying to work out how one goes about detecting if a User
is signed in as an application admin user; I've read a little about
FederatedUsers, but I'm not sure that that's what I need. I'm writing
an app that
Ok, you seem to misunderstand me quite a bit here.
I never said it can't be used. I just said that I don't want to.
Other than for portability reasons, why would I want to pretend that
the datastore is relational by using a framework that emulates this?
My main requirement, which was formed
Sandeep,
Please read Andreas article (link is in the first post of this thread):
The interview article has now been published and can be found at
http://borglin.net/gwt-project/?page_id=604 .
It would be nice if the article included CloudDB too.
Cheers,
Guillermo.
On Tue, Mar 30, 2010 at 9:17
Thanks Nick :-).
On Mar 30, 12:53 pm, Nick Johnson (Google) nick.john...@google.com
wrote:
Hi Andreas,
Excellent article! I've posted it to the App Engine
reddit:http://www.reddit.com/r/AppEngine/comments/bk4kt/datastore_frameworks...
Please feel free to post the followup article(s) there,
Shawn,
By the same token google could cut all their hardware in half and double
page loads, check out this formula:
NumberOfRequests / HardwareQuality = PageLoad
Therefore, Google should power the entire GAE infrastructure with a netbook
- yes each page would take 2.5 decades to load, but
Andreas,
I think there is more misunderstanding again.
SQL can be run on top of a file system (fseek, read, write) or on top of a
persistent hashmap (datastore).
If you create a SQL interface on top of any of those, then it is a
relational database, not a fake but a real relational database.
On Mar 29, 9:24 am, Jason Parekh jasonpar...@gmail.com wrote:
Hi Moritz,
Could you try the following:
Thanks guys - I had to toy with this some more to find out to update
GAE through Eclipse's plugin update mechanism. No downloading of the
SDK and manually pointing to the new SDK 'round
Hello
I would like to run a wiki on GAE, something like Mediawiki.
All wiki solution that I know are runing with a Mysql base in the
background; so, there are not easily portable on GAE
Do you know some wiki solution runing on GAE?
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Hi Guillermo,
I agree with you completely. Here are my thoughts on the subject.
Relational theory, SQL and JDBC are functional specifications and RDBMS
vendors implement these specifications. Actually speaking data model has
nothing to do with technology. A data model in software engineering is
I did not state my problem clearly above , it seems
My problem is that the createLoginURL takes me to the custom google
apps domain login instead of the standard Google Page.
refer link http://www.hum11.com for the problem
It takes me to the hum11 login page instead of
On Mar 29, 9:30 pm,
Hi,
Extensive listing of Java open source wikis at
http://java-source.net/open-source/wiki-engines
Let us know if 1 suits your needs and if you could test it
successfully on Google App Engine
Good luck!
didier
On Mar 30, 5:12 pm, moissinac jcmoissi...@gmail.com wrote:
Hello
I would like to
It does that because you set up your appengine applications to use your
google app users only.
On Tue, Mar 30, 2010 at 5:47 PM, niraj njun...@gmail.com wrote:
I did not state my problem clearly above , it seems
My problem is that the createLoginURL takes me to the custom google
apps domain
Hi Guillermo,
If you create a SQL interface on top of any of those, then it is a
relational database, not a fake but a real relational database. Why would I
want a relational database? Consistency, for starters. ACID transactions.
Set operations.
'Consistency' is a broad term. If you are
These misunderstandings :-).
I wouldn't say that computer science is about building
abstractions..perhaps software engineering. (Dijkstra would have said
less kind words than me about that :-) )
Anyways, as much as I agree that abstractions are nice, have you
actually used AppEngine with these
Oops. A bit tired here. I wrote SQL in some places where I actually
meant jiql/cloud2db.
On Mar 30, 5:58 pm, Andreas Borglin andreas.borg...@gmail.com wrote:
These misunderstandings :-).
I wouldn't say that computer science is about building
abstractions..perhaps software engineering.
Hi
Did you manage to fix it? I'm facing the same issue!
On Mar 14, 6:18 pm, Steve Osborne algoc...@gmail.com wrote:
My Development Console athttp://localhost:/_ah/admin/datastore
shows that I have data uploaded but how do I access it using Java?
I wasn't able to retrieve any record using
I want to unsubscribe from this group.thanks and regards
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Did you solve this issue? I have the same problem...
On Mar 14, 6:18 pm, Steve Osborne algoc...@gmail.com wrote:
My Development Console athttp://localhost:/_ah/admin/datastore
shows that I have data uploaded but how do I access it using Java?
I wasn't able to retrieve any record using the
Hi,
I'm fairly new to JDO and App Engine and actually facing an odd
problem.
I'm trying to retrieve a child object with the method
pm.getObjectById(Child.class, Id) but this method throws me a
JDOObjectNotFoundException. I'm sure that the child object exists and
in facts, when I retrieve the
Hi everybody,
I am trying to build my application and i am facing a very strange
issue : here is the code :
PersistenceManager pm=PMF.get().getPersistenceManager();
Query query=pm.newQuery(Espace.class);
//query.setFilter(nom == paramAuthor);
hello
am working on a project called Cloud-based teaching system.I want to
make use of blogger data API.
I am bit confused about google's client library.
Am using Eclipse 3.5.In which path we have to configure or java client
library.
Please help me !!!
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Hello,
I've the following class:
public class WebAiatListener implements ServletContextListener {
private static final Logger logger = Logger.getAnonymousLogger();
@Override
public void contextInitialized(ServletContextEvent sce) {
ServletContext context =
Now that GAE 1.3.2 has been released I'd like to update my Eclipse
plugin (indeed, when the GAE is started it warns me that a newer
version is available).
However, when I ask Eclipse to Check for Updates it reports nothing
is available.
There don't seem to be any update instructions, just
First of all, please accept big thanks, Andreas. Those knowledge sharing is
helpful to me as well as other learners.
Follow the thread, I think I was a bit misled on benefit of SQL/JDBC on GAE.
In Andreas blog's, he mentioned on learning curve to deal with the mapping:
Java classess -- JDO/JPA -
We're still working through the details of reserved instances. The
constructive feedback on this thread is useful; it is theoretically possible
to pay for an unused instance that requests spill into when they go over
capacity of the current spun up requests. That is - pay for one more
instance
Hi Joa,
Glad you were able to solve your problem. Sorry, I should have pointed you
to the upgrade instructions to get you immediately going (BTW, they do
exist, though they are located in the Google Plugin for Eclipse docs:
http://code.google.com/eclipse/docs/updating_the_plugin.html ).
Do you
Hey Steve,
The instructions are located on the Google Plugin for Eclipse website,
specifically at http://code.google.com/eclipse/docs/updating_the_plugin.html
http://code.google.com/eclipse/docs/updating_the_plugin.htmlHope this
helps,
jason
On Tue, Mar 30, 2010 at 1:41 PM, Steve
On Tue, Mar 30, 2010 at 8:03 AM, Guillermo Schwarz
guillermo.schw...@gmail.com wrote:
SQL can be run on top of a file system (fseek, read, write) or on top of a
persistent hashmap (datastore).
If you create a SQL interface on top of any of those, then it is a
relational database, not a fake
hi,
I am using GWT 2.0.3 version, I am going through the steps mentioned in GWT
tutorial
http://code.google.com/webtoolkit/doc/latest/tutorial/appengine.html
When trying to integrate login service I get following exception.
Mar 30, 2010 6:44:49 PM
Great information, Ikai.
I really feel that instances should be completely avoided in concept and
language on the GAE. What if the feature was simply an enable/disable deal
called Warm Scale. If it were enabled, then your *next* instance would
always be warm, regardless of how many instances you
Check out my blog post:
http://hamandeggs.wordpress.com/2010/01/26/how-to-gae-eclipse-maven/
It's for the old plugin version but still working with the new ones. I
haven't yet had time to figure out how to utilize the WAR directory
configuration. I hope you find this useful.
-Hannu
On
Andreas, first thanks for the article, it was hugely interesting and
of course thanks to all who have given us some alternatives to argue
about! A few themes seem to come out of this for me
1) Some people are just either happier with what they know (SQL/
RDBMS) - perfectly understandable and
In the mean time, here are some ideas for reducing startup times by
shrinking our apps. I went from 8.1s to 2.5s mainly by eliminating
Guice, and I would expect similar results with Spring. I can
definitely live with 2.5s...
Hi objectuser,
Thanks for the links - very helpful. I have had a look and studied
them. I am trying to get your example to work but am getting the
error.
org.springframework.transaction.CannotCreateTransactionException:
Could not open JDO PersistenceManager for transaction; nested
exception is
Sorry as well at the moment I am only trying to get this to work on my
local version of appengine (the SDK). I will look at the workaround
posted at http://code.google.com/p/googleappengine/issues/detail?id=1381
once I have it all working.
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David, that post mirrors many of the points made here:
http://www.answercow.com/2010/03/google-app-engine-cold-start-guide-for.html
There's one or two more tips on that page.
On Tue, Mar 30, 2010 at 12:47 PM, David Chandler turboman...@gmail.comwrote:
In the mean time, here are some ideas for
i switch from JDO to Objectify i one Day.
i changed 42 classes (thats what my svn says), but the key to success the
migration was the tests:
57 green tests before start + 1 factibility test for objectify in
transaction.
Now my code is clean y work faster,
NM
On Tue, Mar 30, 2010 at 4:38 PM,
This is getting really interesting. I have been follwoing this post
from a couple of days.
I managed to see What exactly is ammounting to delayed startup.
Some have suggested to remove spring/di/jpa/jdo. While this is true,
it solves much of the problem - These are the reason why I would
choose
I must have read this email wrong. I thought this was affecting deploys. I
see this error, but it isn't causing any problems - I'm still able to run my
application. Can you explain how this blocks you from developing with 1.3.2?
On Tue, Mar 30, 2010 at 10:31 AM, Ikai L (Google) ika...@google.com
Are you using Java or Python? Can you check to see if you are using 1.3.2?
http://code.google.com/p/googleappengine/issues/detail?id=502
I've reproduced this using the Java SDK, but I want to check to see if it's
also problematic in Python.
On Mon, Mar 29, 2010 at 11:57 PM, Timofey Koolin
Guillermo, Sandeep - you guys are both missing my point.
You're not giving me a SQL interface to my GAE datastore data. You're
trying to turn the GAE datastore into an RDBMS. There is a crucial
distinction.
I don't want to try to run Hibernate against GAE. I don't want a fat
layer of very
I've reproduced the off-by-one error. Thanks for bringing this up.
On Mar 27, 8:32 am, jacek.ambroziak jacek.ambroz...@gmail.com
wrote:
fetchData is very useful. At the moment its implementation seems to
suffer from an off-by-one bug.
For instance, fetchData(key, 0, 1024) returns an array of
Anybody ? Someone look at my class and say to me ot should work but it
doesn t and i habe still no ide why ... Please :)
On 30 mar, 00:09, Guit lemoin...@gmail.com wrote:
Hi everybody,
I am trying to build my application and i am facing a very strange
issue : here is the code :
Thanks Ikai, for looking into the root cause. I am confronting this
issue, and I am relatively new to the GAE Eclipse plugin. One of the
post before said that they were able to solve the issue by switching
back to 1.3.1, since I got this update using the eclipse software
manager,
how do I
Geo, what is the issue? Does it actually break anything? We'll investigate
on our part, but if it doesn't actually prevent you from writing code
there's absolutely no reason to downgrade.
On Tue, Mar 30, 2010 at 2:19 PM, Geo gaki...@gmail.com wrote:
Thanks Ikai, for looking into the root cause.
Ikai,
It doesn't break anything and neither does it stops from deploying but
it just looks ugly and we might miss the real error if any during the
deployment.
Thanks,
Rahul
On Mar 30, 8:43 pm, Ikai L (Google) ika...@google.com wrote:
Geo, what is the issue? Does it actually break anything?
On 31 Mar 2010, at 02:38, David Sowerby wrote:
Now all
I have to do is decide which of the alternatives to go for .
Twig has the prettiest representative... however she has a very
negative attitude towards traditional persistence interfaces on the
datastore:
I have updated my app engine to 1.3.2 a couple of days ago, and it
runs well on the cloud. Today, when I trying to some testing on my
local machine, an exception throws out whenever I try to use the PMF
code:
PersistenceManager pm = PMF.get().getPersistenceManager();
Basically the
Looks like you have a class path problem. Do you have different
versions of the app engine jars in your WEB-INF/lib dir?
On 31 Mar 2010, at 09:18, Featheast Lee wrote:
I have updated my app engine to 1.3.2 a couple of days ago, and it
runs well on the cloud. Today, when I trying to some
I'm use Java SDK 1.3.2
On 31 мар, 01:55, Ikai L (Google) ika...@google.com wrote:
Are you using Java or Python? Can you check to see if you are using 1.3.2?
http://code.google.com/p/googleappengine/issues/detail?id=502
I've reproduced this using the Java SDK, but I want to check to see if
I tried to do what you mentioned here, but seems no lucky.
On Mar 31, 1:21 pm, John Patterson jdpatter...@gmail.com wrote:
Looks like you have a class path problem. Do you have different
versions of the app engine jars in your WEB-INF/lib dir?
On 31 Mar 2010, at 09:18, Featheast Lee wrote:
Hi kevin:
Yes, my workaround is just a proxy which route every pmf requests
back to the original instance return by
JDOHelper.getPersistenceManagerFactory.
I used jdo transaction manager and aop and it worked on gae host
after applying the workaround. My spring version is 2.0.8 but I
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