[appengine-java] Request-URI Too Large

[Lucian Baciu]

I just started getting Request-URI Too Large messages when authenticating 
with Openid using the Users Service. It seems there is a new "followup" 
parameter added to the OpenId URL request (which is exactly the same as the 
"continue" parameter) making the request too large. 

Thanks,
Lucian

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Re: [appengine-java] Re: Best way to delete items

[Ben]

Ah, I didn't fully read your question, sorry about that!

Unless you have several hundred Entity types, you likely won't run out
of indexes for a long time (GAE allows 2,000 indexes if I recall
correctly). But, I understand your issue...

Is the Entity in question a Child of the User?

Could you store the keys in a List on the User (or another) Entity,
and only store the non-deleted ones?

-Ben

http://www.liink.it
http://about.me/benjaminc




On Tue, Mar 1, 2011 at 11:04 PM, WillSpecht  wrote:
> I guess I don't understand your solution.  I would still need an
> indexed query to search for the child entities.
>
> What is the point of creating a child entity?  How does it stop me
> from needing an indexed search?
>
>
> On Mar 1, 3:59 pm, Ben  wrote:
>> Hi Will,
>>
>> Could you create a child Entity that only has a deleted field, then if
>> it's true return the parent?
>>
>> -Ben
>>
>> http://www.liink.ithttp://about.me/benjamincOn Tue, Mar 1, 2011 at 2:56 PM, 
>> WillSpecht  wrote:
>> > I want to allows users to delete entities but not actually delete
>> > them.  Usually I would just create a field, deleted, and set it to
>> > true when the user chooses to delete it.  Then to show these records i
>> > just use owner == userId && deleted ==false.  But this forces me to
>> > use an index for every query I run.  It seems I will very quickly be
>> > using up indexes.
>>
>> > My other solution is to create a new entity deletedItem and store
>> > deleted Items in an entity that corresponds to it.  deleted foo's
>> > would be stored in deletedFoo... This solution also seems to have
>> > major drawbacks.
>>
>> > What is the recommended way to do stored deletes on app engine?
>>
>> > --
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[appengine-java] Re: Can't get .gif image to show in app engine

[i3k]

Thanks, but this makes no change - have given up on this one and placed my 
image in the root directory...

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[appengine-java] Suggestiong New Feature: Add Geocoding Maps API service to the Quota System on App Engine

[branflake2267]

I'm suggesting adding the Maps Api Geocoding as a service in App Engine.

Why:
1. I don't have 10,000+ for the maps API premier and I am hitting below 2500 
request per day.
2. I hit the OVER_QUERY_LIMIT on batch request. On multiple batch request 
for geocoding and I am under 2500 request per day. (this only happens from 
appspot and not from 127.0.0.1)

I'd like to use the service and pay as you go like the app engine format? I 
think you could regulate the geocoding use better with the App Engine Quota 
system.

Any thoughts?

Brandon Donnelson
http://gwt-examples.googlecode.com
http://c.gawkat.com

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[appengine-java] Re: Moderation enabled

[branflake2267]

I'm digging that!

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[appengine-java] Re: Best way to delete items

[branflake2267]

Copy and store it separately. There be a little code overhead, but if your 
tuning for speed I'd do that. 

Brandon Donnelson
http://gwt-examples.googlecode.com

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[appengine-java] Re: Using OAuth: why OauthService.getCurrentUsert().getUserId() is null?

[branflake2267]

My OAuth example for those interested:

http://code.google.com/p/gwt-examples/wiki/DemoGwtGData

Brandon Donnelson
http://gwt-examples.googlecode.com

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[appengine-java] LocalUserServiceTestConfig: currentUser is always NULL

[Koen Maes]

In my test, I setup the LocalUserServiceTestConfig like this :

private final LocalServiceTestHelper helper =

new LocalServiceTestHelper(new LocalUserServiceTestConfig())

.setEnvIsAdmin(true).setEnvIsLoggedIn(true);

@Before
public void setUp() {
helper.setUp();
}

But my code is calling UserServiceFactory.getUserService().getCurrentUser()

But currentUser is still NULL ?

Is that intended behaviour ?


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[appengine-java] Re: Using OAuth: why OauthService.getCurrentUsert().getUserId() is null?

[Koen Maes]

How did you fix it, I posted a similar question at the same time :-D

Can you give example of how to calls that need Oauth authentication ?
How do you bring in the consumer key/secret and token/tokenSecret ?
Do you manage to do actual OAuth calls (GDATA for example) during your unit 
tests !

Eager to pick this up

Koen

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[appengine-java] Re: Request-URI Too Large

[andrew]

Same here. First occurance was today March 2nd now stuck and can't
login to my app.

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[appengine-java] Re: Request-URI Too Large

[andrew]

We tried to debug and failed to understand it.

I discovered that if I Sign out from all my (various) Google accounts
and then retried, it worked as before.

We will try and post some more information to explain what was
happening, if not why.

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[appengine-java] Re: LocalUserServiceTestConfig: currentUser is always NULL

[Simon Knott]

Have you specified the following properties:

helper.setEnvAuthDomain("YOUR_DOMAIN");
helper.setEnvEmail("USER@YOUR_DOMAIN");


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[appengine-java] Login redirect failing all of a sudden /_ah/conflogin

[Joerg Weingarten]

Since this morning my call to "userservice.createLoginUrl" produces a
url that doesn't work anymore. When selecting my "Sign in" link, which
has a url like:

https://www.google.com/accounts/ServiceLogin?service=ah&passive=true&continue=https://appengine.google.com/_ah/conflogin%3Fcontinue%3Dhttp://www.taxinvestorpro.com/tool

[appengine-java] Re: Reverse proxy won't allow Google Accounts sign in

[GoSharp Lite]

Solution has been found.

1) Sign up for Google Apps.
2) Buy a domain name gochild2011.com
3) Add gochild2009.appspot.com as a service of gochild2011.com
4) Add new URL web.gochild2011.com for gochild2009.appspot.com
5) Modify host records with "web" point to 50.56.75.253 as A(Address)
record type.
6) Modify Nginx reverse proxy configuration file at 50.56.75.253 as
shown below.
Location / {
  proxy_redirect off;
  proxy_set_header Host $host;
  proxy_pass http://ghs.google.com;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For
$proxy_add_x_forwarded_for;
}

Now users in China should be able to sign in by Google Accounts and
play.
http://web.gochild2011.com

On Mar 1, 9:43 am, GoSharp Lite  wrote:
> A reverse proxy positioned in front of Google Apps may record access
> logs, and these logs may be mined for usage information.
>
> Could above statement the reason that Google Accounts don't allow sign
> in through a reverse proxy?
>
> On Feb 28, 11:21 pm, GoSharp Lite  wrote:
>
>
>
>
>
>
>
> > In order to give users in China access tohttp://gochild2009.appspot.com
> > , a reverse proxy has been set up athttp://50.56.75.253usingNginx.
>
> > When I try to sign in fromhttp://50.56.75.253, Google Accounts will
> > re-direct back tohttp://50.56.75.253withoutsign in.
>
> > Is it possible to have a reverse proxy and a working Google Accounts
> > sign in service?
>
> > p.s. Sign in link is currently disable inhttp://50.56.75.253inorder
> > not to confuse users.

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Re: [appengine-java] Login redirect failing all of a sudden /_ah/conflogin

[Jon McAlister]

Looks like you pushed a good workaround already, but yes that was a
result of a new login system yesterday, and looks like it is not
handling this case like the prior system did.

Specifically, calling createLoginUrl where the continue url is not the
same as the url the app is hosted on. And, furthermore, the continue
url is not an app engine url at all.

For now, what you did was a good workaround. That is, use an app
engine url as the continue url, and then have the app engine app
redirect to the non-app-engine url.

Need to think on this case some more.

On Wed, Mar 2, 2011 at 7:53 AM, Joerg Weingarten  wrote:
> Since this morning my call to "userservice.createLoginUrl" produces a
> url that doesn't work anymore. When selecting my "Sign in" link, which
> has a url like:
>
> https://www.google.com/accounts/ServiceLogin?service=ah&passive=true&continue=https://appengine.google.com/_ah/conflogin%3Fcontinue%3Dhttp://www.taxinvestorpro.com/tool
> I get the error:
>
> The requested URL /_ah/conflogin was not found on this server.
>
> Somebody please help.
>
> Thx
> ---Joerg---
>
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[appengine-java] Re: Request-URI Too Large

[Jan / Hapara]

Opened an issue for this:

http://code.google.com/p/googleappengine/issues/detail?id=4668

Please star this to let Google know it affects you as well.

FYI, cache reset doesn't fix it, but a cookie reset for the Google cookies 
does.  Needless to say that's difficult for an average person to do without 
wiping their entire cookie cache, which is really rather a measure of last 
resort and for most people, destructive.

Would be great to see some response from Google on this, it's a show-stopper 
for the authentication/OpenID framework.

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[appengine-java] Problem following HOW TO: Build a SOAP Server tutorial

[ken]

I'm attempting to follow the Server part of Mitch Rudominer's tutoral
HOW TO: Build a SOAP Server and a SOAP Client on Google App Engine
(http://code.google.com/appengine/articles/soap.html)  but ran into a
problem early on.
My platform:  MacBook with Java 1.6.0_22 and Eclipse Helios R1 with
AppEngine 1.4.2.
I followed the tutoral by cut/paste, except for naming the project --
for convenience giving it a name already set up on GAE but as yet
unused.  For ref, here is my runwsgen.sh:

#!/bin/bash
class=com.example.Greeter
clpth='./war/WEB-INF/classes'
resourcedir='./war'
outsourcedir='./src'
outdir='./war/WEB-INF/classes'
wsgen -cp "$clpth" -wsdl -keep -r "$resourcedir" -d "$outdir" -s
"$outsourcedir"  $class

When I attempt to execute runwsgen.sh I get the following exception:

$ sh runwsgen.sh
Problem encountered during annotation processing;
see stacktrace below for more information.
com.sun.tools.internal.ws.processor.modeler.ModelerException: [failed
to localize] A web service endpoint could not be found()
at
com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.onError(WebServiceAP.java:
215)
at
com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.buildModel(WebServiceAP.java:
322)
at
com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.process(WebServiceAP.java:
256)
at com.sun.mirror.apt.AnnotationProcessors
$CompositeAnnotationProcessor.process(AnnotationProcessors.java:60)
at com.sun.tools.apt.comp.Apt.main(Apt.java:454)
at com.sun.tools.apt.main.JavaCompiler.compile(JavaCompiler.java:258)
at com.sun.tools.apt.main.Main.compile(Main.java:1102)
at com.sun.tools.apt.main.Main.compile(Main.java:964)
at com.sun.tools.apt.Main.processing(Main.java:95)
at com.sun.tools.apt.Main.process(Main.java:85)
at com.sun.tools.apt.Main.process(Main.java:67)
at
com.sun.tools.internal.ws.wscompile.WsgenTool.buildModel(WsgenTool.java:
209)
at com.sun.tools.internal.ws.wscompile.WsgenTool.run(WsgenTool.java:
112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.tools.internal.ws.Invoker.invoke(Invoker.java:111)
at com.sun.tools.internal.ws.WsGen.main(WsGen.java:41)
error: compilation failed, errors should have been reported

The com.example.Greeter source and class are present as described.
Nothing is generated, in particular, no WSDL file is created.   I'll
appreciate any pointers in getting past this.
Thanks in advance ...Ken

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[appengine-java] Java Positions in downtwon Chicago

[Christi]

I have a few Java Developer positions in downtown Chicago. The job 
descriptions are below. They are both in downtown Chicago. Please let me 
know if you know of anyone that may be interested. $500 referral bonus.

Thanks,
Christi Latz
Technical Recruiter
TransTech Solution Staffing
cl...@trans-tech.com
www.trans-tech.com
Direct: 630.228-8566
Fax: 630.228.8585
www.twitter.com/christitrans - Job Updates
Referral Bonus available!
Microsoft Certified Gold Partner
WBE Certified Woman-Owned Business

Requirement 1:
Contract Length – 9 months +
The candidate will be primarily involved with re-engineering of an existing 
web application. This will include updating all aspects of web application 
including changes to process flows, adding new functionality, replacing the 
framework and changing look and feel to fit in with branding standards. The 
candidate is also expected to participate in development of a new testing 
framework around this application. This application is used by internal as 
well as external facing customers that enable the client base to search, 
view and edit transactions and execute ad-hoc reports. It is required that 
this candidate have an exceptional grasp of object oriented concepts, web 
technologies, be proficient in writing optimized SQL and have experience on 
such frameworks such as Spring. Candidate needs to be self-motivated and be 
able to plan and execute based on imposed deadlines. The candidate must have 
exceptional interpersonal communications skills and support a collaborative 
approach to development.
Java Web Developer the following skills and experience:
• 3+ years Java development experience in OO and distributed environments.
• 3+ years Development experience with web technologies(e.g. Spring MVC, 
JSP, HTML, AJAX, JavaScript, SiteMesh, GWT).
• 3+ years experience with SQL and Relational databases (e.g. Oracle). This 
includes having in depth experience of complex multi-table structures. Must 
be able to performance tune queries to run efficiently with high volumes of 
data. 
• 1+ years with Linux/Unix.
• Experience with Spring Framework, a must.
• Experience using Tomcat or other Java Application Server for executing 
applications.
• Experience with Eclipse, GIT and Maven a plus.
• Knowledge of open source libraries such as Log4j, JUnit, Ant, UC4 and 
Apache Commons, a plus.
• Ability to learn existing applications quickly and to be able to make 
modifications to them.
• Ability to work independently.
Requirement 2:
Contract 
Seeking Web Application Developer with the following skills and experience:
- Highly Proficient in writing client/server applications using Java EE 
technologies (JSP/Servlets)
- Proficient in creating rich web applications using Ajax and advanced 
interactive Javascript with HTML/XML. jQuery expertise is a plus.
- Proficient using Weblogic or other Java Web Application Servers for 
executing applications. Tomcat expertise is a plus.
- Proficient designing and writing Web Services in a SOA architecture
- Experience using the Spring framework for various purposes including the 
data retrieval layer
- Experience using Oracle database SQL including stored procedures and 
triggers
- Experience with building and packaging deployments. Maven, etc.
- Experience using and deploying applications in a Unix/Linux environment. 
Shell scripting & perl are a bonus.
- Experience with automating testing such as JUnit. Extensive knowledge of 
web application testing strategies & suites such as Selenium is a plus.
- Experience with SCM tools. Git, ClearCase, SVN, etc.
- Knowldege of Continuous Integration tools. Bamboo, Cruise Control, etc is 
a plus
- Knowledge of data retrieval and data parsing which follows defined message 
specifications. Experience with Tibco or other data delivery system a plus.
- Knowledge or experience creating OSGi-based applications is desired but 
not necessary
- Strong ability to learn existing applications quickly and to be able to 
make modifications to them
- Must possess excellent communication skills
- Ability to work independently

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[appengine-java] Re: eclipse shows error in .jsp but tutorial project runs

[marsh...@marshallfarrier.com]

another thing that might be helpful for diagnostics of my
guestbook.jsp following the java tutorial: Eclipse isn't color coding
anything or making use of its programmer-friendly features on the .jsp
file, which i have in the war directory of the project. Eclipse is of
course using a JDK for the project, so that error message is rather
cryptic to me. it just somehow isn't understanding what the .jsp
really is, even though when it builds, it builds the project correctly
(since it runs) but thinks there is an error--if that makes any sense.

moving forward in the tutorial, all of this amounts not only to the
annoyance of the red-x marker, but also as i edit the file, since
eclipse isn't checking it, i'm on my own in terms of checking for
punctuation and all that--it would just be nice if eclipse could give
me the info that it usually does rather than misunderstanding that
file.

On Mar 1, 9:42 pm, "marsh...@marshallfarrier.com"
 wrote:
> actually, i did just discover some info on what it doesn't like: Down
> in the bottom box where there's a console tab and a few others, there
> is also a problems tab. When i click there it says "your project must
> be configured to use a JDK in order to use JSPs."
>
> Just following the tutorial, i did change web.xml to have
> guestbook.jsp as welcome-file but didn't change anything else. web.xml
> in its entirety is:
> [code]
> 
> http://www.w3.org/2001/XMLSchema-instance";
> xmlns="http://java.sun.com/xml/ns/javaee";
> xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";
> xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";
>  version="2.5">
>         
>                 Guestbook
>                 guestbook.GuestbookServlet
>         
>         
>                 Guestbook
>                 /guestbook
>         
>         
>                 guestbook.jsp
>         
> 
>
> [/code]
> p.s.: what tags do you use here to set code apart so that it's easier
> to read?
> On Mar 1, 2:08 pm, "Ikai Lan (Google)"  wrote:
>
>
>
> > Do you know what the error says when you hover over the X?
>
> > Could just be Eclipse weirdness.
>
> > Ikai Lan
> > Developer Programs Engineer, Google App Engine
> > Blog:http://googleappengine.blogspot.com
> > Twitter:http://twitter.com/app_engine
> > Reddit:http://www.reddit.com/r/appengine
>
> > On Tue, Mar 1, 2011 at 8:05 AM, Aisthesis 
> > wrote:
>
> > > i'm just trying to learn how the app engine works and was working
> > > through the tutorial. in the guestbook.jsp version, using eclipse, i
> > > started off with some actual errors (missing quotation mark, missing
> > > space) but after getting enough of those corrected that the program
> > > does run in my browser, i still get the "x-file" sign in eclipse next
> > > to the guestbook.jsp file, and it hasn't gone away after repeated
> > > cleans.
>
> > > here's my file:
> > > [code]
> > > <%@ page contentType="text/html;charset=UTF-8" language="java" %>
> > > <%@ page import="com.google.appengine.api.users.User" %>
> > > <%@ page import="com.google.appengine.api.users.UserService" %>
> > > <%@ page import="com.google.appengine.api.users.UserServiceFactory" %>
>
> > > 
> > >        
>
> > > <%
> > >        UserService userService = UserServiceFactory.getUserService();
> > >        User user = userService.getCurrentUser();
> > >        if (user != null) {
> > > %>
> > >        Hello, <%= user.getNickname() %>! (You can
> > >        sign
> > >        out.)
>
> > > <%
> > >        } else {
> > > %>
> > >        Hello! Sign
> > >        in to include your name with greetings you post.
>
> > > <%
> > >        }
> > > %>
> > >        
> > > 
> > > [/code]
>
> > > is there still something wrong with it? and, if not, any ideas as to
> > > what might be causing the eclipse error symbol?
>
> > > --
> > > You received this message because you are subscribed to the Google Groups
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> > >http://groups.google.com/group/google-appengine-java?hl=en.

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[appengine-java] Re: Problem following HOW TO: Build a SOAP Server tutorial

[ken]

Solved: My cut/paste mangled the @WebService annotation

On Mar 2, 2:11 pm, ken  wrote:
> I'm attempting to follow the Server part of Mitch Rudominer's tutoral
> HOW TO: Build a SOAP Server and a SOAP Client on Google App Engine
> (http://code.google.com/appengine/articles/soap.html)  but ran into a
> problem early on.
> My platform:  MacBook with Java 1.6.0_22 and Eclipse Helios R1 with
> AppEngine 1.4.2.
> I followed the tutoral by cut/paste, except for naming the project --
> for convenience giving it a name already set up on GAE but as yet
> unused.  For ref, here is my runwsgen.sh:
>
> #!/bin/bash
> class=com.example.Greeter
> clpth='./war/WEB-INF/classes'
> resourcedir='./war'
> outsourcedir='./src'
> outdir='./war/WEB-INF/classes'
> wsgen -cp "$clpth" -wsdl -keep -r "$resourcedir" -d "$outdir" -s
> "$outsourcedir"  $class
>
> When I attempt to execute runwsgen.sh I get the following exception:
>
> $ sh runwsgen.sh
> Problem encountered during annotation processing;
> see stacktrace below for more information.
> com.sun.tools.internal.ws.processor.modeler.ModelerException: [failed
> to localize] A web service endpoint could not be found()
>         at
> com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.onError 
> (WebServiceAP.java:
> 215)
>         at
> com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.buildMo 
> del(WebServiceAP.java:
> 322)
>         at
> com.sun.tools.internal.ws.processor.modeler.annotation.WebServiceAP.process 
> (WebServiceAP.java:
> 256)
>         at com.sun.mirror.apt.AnnotationProcessors
> $CompositeAnnotationProcessor.process(AnnotationProcessors.java:60)
>         at com.sun.tools.apt.comp.Apt.main(Apt.java:454)
>         at com.sun.tools.apt.main.JavaCompiler.compile(JavaCompiler.java:258)
>         at com.sun.tools.apt.main.Main.compile(Main.java:1102)
>         at com.sun.tools.apt.main.Main.compile(Main.java:964)
>         at com.sun.tools.apt.Main.processing(Main.java:95)
>         at com.sun.tools.apt.Main.process(Main.java:85)
>         at com.sun.tools.apt.Main.process(Main.java:67)
>         at
> com.sun.tools.internal.ws.wscompile.WsgenTool.buildModel(WsgenTool.java:
> 209)
>         at com.sun.tools.internal.ws.wscompile.WsgenTool.run(WsgenTool.java:
> 112)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp 
> l.java:
> 25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at com.sun.tools.internal.ws.Invoker.invoke(Invoker.java:111)
>         at com.sun.tools.internal.ws.WsGen.main(WsGen.java:41)
> error: compilation failed, errors should have been reported
>
> The com.example.Greeter source and class are present as described.
> Nothing is generated, in particular, no WSDL file is created.   I'll
> appreciate any pointers in getting past this.
> Thanks in advance ...Ken

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[appengine-java] Testing data migration using JDO and DataNucleus

[Jason G]

Hello everyone!

We've run into a data migration-test problem, and I'm wondering if
anyone would have any advice on how to proceed...

We're building a system that needs to allow hot-swapping of
application builds while customers are actively using our webapp, and
that means we need to support data object "schema" migration in-
place.  We do this by implementing LoadCallback for version migration,
and @Deprecated-ing no-longer-used fields.  So far, so good.

Thing is, we'd like to build up a test suite that allows developers to
write unit tests for data migration against a local environment. That
means no uploading to GAE, but using
com.google.appengine.tools.development.testing.LocalServiceTestHelper
instead.

We have two "classes" directories: Both containing DataNucleus-JDO-
enhanced .class files, one of the "old" schema, and one of the
current.

We have a MigrationTestHelper that creates a GroovyClassLoader with
the old schema set as its classpath.  The targetted class under test
is found, instantiated, and passed to a test-supplied Closure that
initializes the object with the old data to be migrated.  The Helper
calls PersistenceManager.makePersistent and returns
pm.getObjectId(newlyPersisted).getKey().

The second half of the test involves creating a new GroovyClassLoader
and setting the context class loader:
Thread.currentThread().setContextClassLoader(loader).  Then we use a
different PersistenceManager (from a different
PersistenceManagerFactory) to load the object by its Key.

What happens is we get a ClassCastException:
java.lang.ClassCastException: java.lang.Long cannot be cast to
java.util.List
at com.x.model.User.jdoReplaceField(User.groovy)
at com.x.model.User.jdoReplaceFields(User.groovy)
at
org.datanucleus.state.JDOStateManagerImpl.replaceFields(JDOStateManagerImpl.java:
2772)
at
org.datanucleus.state.JDOStateManagerImpl.replaceFields(JDOStateManagerImpl.java:
2791)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.fetchObject(DatastorePersistenceHandler.java:
480)

It *appears* as though the JDOStateManagerImpl uses an array of fields
to get/set values.  You can crack open the enhanced .class files and
see there's a method called __jdoFieldNamesInit() that sets up a
static list of Fields.

The old User contains the field: "balance", which is a Long.
The new User contains the fields: "balance", which is @Deprecated and
is Long, and "_balances", which is a List.

Looking in the .class files, it looks like each field is ordered
alphabetically, so in old User, "balance" is index 0, where in new
User, "balance" is index 1 and "_balances" is index 0.  Hence the
ClassCastException.

I'm stuck on how to proceed.  I'd have thought that fields would be
replaced based on field name, not on an index...  Especially an index
that we don't appear to be able to control.  But if it's the case that
fields are placed by index on load, how does data migration work on
AppEngine itself?  Our migration code works fine there...

Is this a DataNucleus issue?  An issue with LocalServiceTestHelper?
An issue of developer sanity? ;)

Any insight would be greatly appriciated!

Thanks!
Jason

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[appengine-java] facebook php app in google app engine

[v1v]

Hi,
I have created a facebook api using php and mysql and I want to
host it in google app engine ,but google app does not support php, so
I want to create a java application hosted in google app engine that
invokes the facebook api written in php.
pls help.

regards

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[appengine-java] Re: Using memcache in app engine

[Remigius]

Ian,

This is not true: this statement casts the result of the invocation of
get() to HashMap. A cast of _cache to
HashMap with subsequent invocation to get() would
look as follows:

((HashMap) _cache).get(user.getInstance());

Also, the exception says: "java.lang.ClassCastException:
java.util.ArrayList cannot be cast to java.util.HashMap", which
indicates an attempt to cast an ArrayList to a HashMap.

Furthermore, the expression "new HashMap(_cache)" - as simple and easy
as it may look - creates a copy of the whole content of the cache. As
I don't know the exact implementation of the cache's Map operation, I
would never issue such a statement. It can be assumed that this
involves getting all objects in the cache, which may be an expensive
operation. The constructor of HashMap internally iterates over all
entries of the cache (see its source code).

Generics are basically thrown away at compile time, i.e they don't
influence the behavior at runtime (see also message of the
ClassCastException).

However, a source of the error may be that the put() has
user.getInstanceID() as key, while the get has user.getInstance().
Depending on what you put with the key user.getInstance(), this could
not be casted to a HashMap (or simply HashMap at
runtime).

On Mar 1, 8:06 pm, Ian Marshall  wrote:
> I refer to the GAE/J-specific post in the GAE group of the same name
> of link:
>
>  http://groups.google.com/group/google-appengine/browse_thread/thread/...
>
> Your line
>
>   HashMap userMap = (HashMap UserDetails>)_cache.get(user.getInstance());
>
> involves casting a javax.cache to a java.util.HashMap. Both of these
> classes implement the java.util.Map interface, but it looks like one
> may not be cast directly to the other as you attempt.
>
> I have never used javax.cache, but have you tried using the HashMap
> constructor HashMap(Map m) to get:
>
>   HashMap mapTemp = new HashMap(_cache);
>   HashMap userMap =
> mapTemp.get(user.getInstance());
>
> This might make it easier to identify exactly where the exception is
> occurring.
>
> Enjoy?

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[appengine-java] Re: Ayuda Help java.lang.NoClassDefFoundError: Could not initialize class ognl.OgnlRuntime

[Frankeke]

estoy igual que tu, si encuentras la solución avisame por favor...

On 28 feb, 09:51, Frankeke  wrote:
> Hi, after deploy my app this was success:
>
> Uncaught exception from servlet
> java.lang.NoClassDefFoundError: Could not initialize class
> ognl.OgnlRuntime
>         at OgnlSolution.OgnlListener.contextInitialized(OgnlListener.java:18)
>         at
> org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:
> 548)
>         at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
>         at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
> 1250)
>         at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
> 517)
>         at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
> 467)
>         at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
> 50)
>         at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:
> 191)
>         at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:
> 168)
>         at
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
> 123)
>         at
> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
> 261)
>         at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $2.handleRequest(RuntimePb.java:8440)
>         at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> 454)
>         at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:
> 572)
>         at com.google.tracing.TraceContext$TraceContextRunnable
> $1.run(TraceContext.java:448)
>         at com.google.tracing.TraceContext.runInContext(TraceContext.java:
> 688)
>         at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
> 326)
>         at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
> 318)
>         at com.google.tracing.TraceContext
> $TraceContextRunnable.run(TraceContext.java:446)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
> 1110)
>         at java.util.concurrent.ThreadPoolExecutor
> $Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:636)
>
> Unexpected exception from servlet: java.lang.NoClassDefFoundError:
> Could not initialize class ognl.OgnlRuntime
>
> what can i do?
>
> I have deployed some times ago and its works fine.
>
> I´m Using Struts 2

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[appengine-java] Help with ognl runtime and Struts 2

[Frankeke]

Hi, Today after deploy this was success:

Uncaught exception from servlet
java.lang.NoClassDefFoundError: Could not initialize class
ognl.OgnlRuntime
at OgnlSolution.OgnlListener.contextInitialized(OgnlListener.java:18)
at
org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:
548)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
1250)
at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
467)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
50)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:
191)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:
168)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
123)
at
com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
261)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$2.handleRequest(RuntimePb.java:8440)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
454)
at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:
572)
at com.google.tracing.TraceContext$TraceContextRunnable
$1.run(TraceContext.java:448)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:
688)
at com.google.tracing.TraceContext
$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
326)
at com.google.tracing.TraceContext
$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
318)
at com.google.tracing.TraceContext
$TraceContextRunnable.run(TraceContext.java:446)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
1110)
at java.util.concurrent.ThreadPoolExecutor
$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

I don´t know whats the problem, time ago the same code works :S

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[appengine-java] Re: Login redirect failing all of a sudden /_ah/conflogin

[Joerg Weingarten]

Yes Jon, I found a workaround as I needed to get it up and running
right away again, but honestly I don't like it.
The point for me was to hide the app-engine-url and only show the non-
app-engine url.
Right now the user can easily see the app-engine-url by looking at the
link behind Sign In/Sign Out.
Yes I know he can find that anyway ... :-) but it would be a bit more
hidden.

A fix would be really appreciated.
Thx
---Joerg---

On Mar 2, 10:31 am, Jon McAlister  wrote:
> Looks like you pushed a good workaround already, but yes that was a
> result of a new login system yesterday, and looks like it is not
> handling this case like the prior system did.
>
> Specifically, calling createLoginUrl where the continue url is not the
> same as the url the app is hosted on. And, furthermore, the continue
> url is not an app engine url at all.
>
> For now, what you did was a good workaround. That is, use an app
> engine url as the continue url, and then have the app engine app
> redirect to the non-app-engine url.
>
> Need to think on this case some more.
>
> On Wed, Mar 2, 2011 at 7:53 AM, Joerg Weingarten  
> wrote:
> > Since this morning my call to "userservice.createLoginUrl" produces a
> > url that doesn't work anymore. When selecting my "Sign in" link, which
> > has a url like:
>
> >https://www.google.com/accounts/ServiceLogin?service=ah&passive=true&;...
>
> > I get the error:
>
> > The requested URL /_ah/conflogin was not found on this server.
>
> > Somebody please help.
>
> > Thx
> > ---Joerg---
>
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[appengine-java] java.lang.SecurityException

[Mike Zhou]

Hi,

I have an Eclipse EMF based application. It runs well in may AppEngine Eclipse 
testing env. However, when it is deployed to the cloud, I get the following 
error:

Caused by: java.lang.SecurityException: SHA1 digest error for 
org/eclipse/emf/ecore/EObject.class

at 
com.google.appengine.runtime.Request.process-9015283aec833f7d(Request.java)
at 
sun.security.util.ManifestEntryVerifier.verify(ManifestEntryVerifier.java:210)
at java.util.jar.JarVerifier.processEntry(JarVerifier.java:218)
at java.util.jar.JarVerifier.update(JarVerifier.java:205)
at java.util.jar.JarVerifier$VerifierStream.read(JarVerifier.java:428)
at sun.misc.Resource.getBytes(Resource.java:114)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:273)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
... 44 more


The same application ran well in previous AppEngine version. It seems that the 
AppEngine security control has been changes.

Anyone can explain the reason? Also, the difference between AppEngine Eclipse 
testing env and the real Java running env in the cloud would be appreciated.

Thanks, Mike

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[appengine-java] Accessing an IMAP mailbox

[Guillaume Laforge]

Hi all,

I'm curious to know if someone has tried to access an IMAP mailbox
from an App Engine application?

I have an IMAP account from my ISP (ie not a Gmail account), and I was
thinking of doing a kind of notification application on App Engine,
that would notify me, allow me to quickly browse through titles, etc.
And I was wondering if it was possible to access that account thanks
to the javax.mail API.

Thanks for your feedback,

-- 
Guillaume Laforge
Groovy Project Manager
Head of Groovy Development at SpringSource
http://www.springsource.com/g2one

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Re: [appengine-java] Re: Moderation enabled

[Charms Styler]

Hi Jason,

I think perhaps moderation should be employed with certain keywords and 
content types as Roy had shown above. it would make life lot easier..

Regards,
Charms

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