[appengine-java] servlet url pattern

[klong86]

I'm trying to map a URL pattern to a servlet that contains a path.
Below is the example:

/admin/servlet

I've been able to map this correctly and it works on my local
development.  However, when I push the application, it does not work
correctly  Instead, this url pattern generates a 404 error and
redirects to my 404 handler.

Has anyone else seen this problem?
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[appengine-java] Re: URL Rewrite

[Pandu Pradhana]

Hi,

You can use this http://tuckey.org/urlrewrite/

--Pandu

On Sat, Sep 5, 2009 at 11:51 AM, maksud  wrote:

> Hi,
> I am new to Google App Engine. I need some *URL Rewrite* techniques which
> are used in apache httpd *mod_rewrite*. What is the options for jetty
> server? Do you guys recommend some tutorial or documents.
>
>
> Thanks
> Maksud
>
>
> >
>

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[appengine-java] Seeing different (incorrect?) JDO behavior after upgrading to 1.2.5

[David]

I’ve been working with a fairly simple data model that has an
Organization object which contains some String members as well as a
member variable of type PrivilegedUser.  And PrivilegedUser extends a
User, and contains only a Key and some String members.

@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable="true")
public class Organization implements Serializable {

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long id;


@Persistent
private String organizationId;

@Persistent
private String organizationName;


@Persistent
 private PrivilegedUser privilegedUser;

….

I have code running successfully under 1.2.2 which creates an
Organization, then creates a Privileged User object, and assigns it to
the Organization, and then makes the Organization persistent.
Later I query by organizationId to retrieve the Organization object,
and update the PrivilegedUser on the Organization object.
This works fine under 1.2.2.

Under 1.2.5 I began getting the following error:
You have just attempted to access field "privilegedUser" yet this
field was not detached when you detached the object. Either dont
access this field, or detach it when detaching the object.

However, after stepping through the debugger I believe the root cause
is that the privilegedUser field is null on the Organization object
returned from the query (the String members are still correct).  This
value is null even before I attempt to detach the Organization object
from the PersistenceManager.

After seeing this behavior I modified the query code I had been using
to include a custom fetch plan for the query.
This did not change the behavior under 1.2.5.

   PersistenceManager pm = PMF.get().getPersistenceManager
();


FetchGroup fetchGroup = pm.getFetchGroup(Organization.class,
"OrganizationGroup");
fetchGroup.addMember("privilegedUser");

// Add this group to the fetch plan (using its name)
FetchPlan fetchPlan = pm.getFetchPlan();
fetchPlan.addGroup("OrganizationGroup");

Query query = pm.newQuery(Organization.class);
query.setFilter("organizationId == rhsValue");
query.declareParameters("String rhsValue");



I don't think the following is relevant, but I’ve also noticed that
under 1.2.5 the following exception occurs, which has been reported by
others:

INFO: Failed to start reference finalizer thread. Reference cleanup
will only occur when new references are
created.java.lang.reflect.InvocationTargetException

Does this sound like a bug introduced under 1.2.5, or is this expected
behavior that was not enforced under 1.2.2?  In either case, does
anyone have a suggestion on how to work around this issue?

Thanks,
David


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[appengine-java] URL Rewrite

[maksud]

Hi,
I am new to Google App Engine. I need some *URL Rewrite* techniques which
are used in apache httpd *mod_rewrite*. What is the options for jetty
server? Do you guys recommend some tutorial or documents.


Thanks
Maksud

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[appengine-java] JSF 1.2 - Session-scoped managed Bean not Behaving as Expected

[Traveler1980]

Hi All,

I recently upgraded an app that I'm working on from MyFaces 1.1.6 to
JSF (Mojarra) 1.2_13 with Facelets.  I used the jars (el and jsf) from
this example --> http://code.google.com/p/jsfongap/

Everything is working fine when running my app locally; however, when
I deploy, session-scoped managed beans are being recreated on every
page turn - almost as if they are request-scoped.

To give a simple example, let 's say I have this bean defined in faces-
config:

user
foo.bar.User
session


And the bean is used on page 1 of an application as follows:


And the value is then output on a second page like:  

Regardless of what I type on the first page, the value is not retained
and displayed on the second page.  I did a simple test where I logged
user.toString().  I expected the output from toString() to be the same
for the entire session.  My expectation was met on my development
server, but when deployed I saw this:

First Page submit -
09-04 08:44PM 37.206
foo.bar.actions.impl.UserAction execute: foo.bar.u...@1515d5c

Second Page Submit -
09-04 08:44PM 46.579
foo.bar.actions.impl.UserAction execute: foo.bar.u...@60999e

Big surprise.  Different objects!!  In fact, a new instance of User is
created for every page turn.

Has anyone else noticed this odd behavior?  Is it possible that I've
missed something?  I will probably end up going back to MyFaces 1.1.

Thanks in advance for the help.
Jamie


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[appengine-java] Crop gives images that are not exact size

[Tsing]

The crop function in image services takes in floats/doubles between 0
and 1.0 as positions.  This is not accurate enough, because depending
on where the positions are, the return image may not be in the exact
size I want.  Also, it throws exception if the crop size is 1 pixel by
1 pixel.  Why doesn't this function take in exact sizes in pixels?
And any other solutions to that with what it has now?
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[appengine-java] Re: Queries in 1.2.5 don't retrieve com.google.appengine.api.datastore.Text data anymore?

[rick]

Hi Dominik,
I am glad that you found a solution. There is an alternative. You
could annotate your class with  something like
@FetchGroup(name="detach_image", member...@persistent
(name="image_data")})
and then you could use
tx.begin();
pm.getFetchPlan().addGroup("detach_image");
Query q = pm.newQuery(...
...
That way they are fetched only when you need them.


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[appengine-java] Re: new stack traces after upgrading to SDK 1.2.5

[rick]

Vince,
I'm still using SDK 1.2.2  and I am getting a very similar info
message.


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[appengine-java] Re: Model to Optimize Queries

[Sam Walker]

Thanks!

I am thinking of doing something like this:

class Article {
  HashSet reviewers;
  HashSet tags;
  int status; // pending, approved, declined - derived from reviewers'
statuses

  HashMap mapping; // Reviewer key to Review mapping to prevent
storing making another 1:n relationship

  class Review {
int status; // pending, approved, declined
String notes;
... // anything else
  }
}

Do you think this will work? It doesn't get me all the things I want, but is
still good enough I think (its kind of sad that we can't model this common
scenario effectively/efficiently).

Do you recommend doing this HashMap kind of a hacky thing or just make a new
Entity and a new relationship? Is it worth the saving?

On Sat, Aug 29, 2009 at 12:28 AM, leszek  wrote:

>
> Let consider a different approach. Take into account that Article and
> Reviewer are rather immutable data (you need adding new article but
> not to change existing), why break this nice feature.
> Consider several classes:
> Article { Key , {tags}  next attribuites }
> Reviewer { Key, mail, ... next attributes }
> ArticleNotReviewedYet { Key articleKey }
> ArticleUnderReview { Key articleKey, Key reviewerKey, int
> reviewResult }
> ArticleReviewed {Key articleKey, int totalReviewResult }
>
> This way if you want:
> - to know the status of the article : find article in the first table
> and find (by looking up the articleKey only) in what table
> (ArticleNotReviewed, ArticleUnderReview, ArticleReviewed) contains the
> articleKey
> - to add new article: add article to Article and entry to
> ArticleNotReviewed
> - to start review: remove article from ArticleNotReviewed and add an
> entry in ArticleUnderReview
> - to add next review result: add next entry to ArticleUnderReview
> - to end up review: remove all articleKey entries in
> ArticleUnderReview and create entry in ArticleReviewed
>
>
> Of course, it needs much more elaboration, but may be it is worth
> considering.
>
> >
>

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[appengine-java] Re: JDO queries on owned/unowned one-to-many relationships

[Jason (Google)]

Owned relationships uses entity groups behind-the-scenes:

http://code.google.com/appengine/docs/python/datastore/keysandentitygroups.html#Entity_Groups_Ancestors_and_Paths

An entity group is basically a hierarchy of entities, with one entity as the
root and all other entities below this root. Entity groups can be
arbitrarily deep, so you can have entities with a parent, grandparent,
great-grandparent, and so-on. Owned relationships are maintained by
embedding the parent's key in the child's key -- this is why you can't
change the relationship between parent and child after storing the entities.


Because parent keys are embedded in the child entities, it's possible to
execute an "ancestor" query where you retrieve all entities above a given
entity in the hierarchy. This is pretty straightforward using the low-level
datastore API, but you can do this in JDO as well -- see the last post in
this thread:

http://groups.google.com/group/google-appengine-java/browse_thread/thread/97ba3209ec6a65de

- Jason

On Thu, Sep 3, 2009 at 7:40 PM, Nicholas Albion  wrote:

>
> Could somebody please provide an example of how to query for the one-
> to-many relationship examples in the documentation?
>
> What I want to do is something like the following:
>
> String employeeId = "1234";
> query = pm.newQuery(ContactInfo.class);
> query.setFilter("employee == employeeParam");
> query.declareParameters("String employeeParam");
> List employeeContacts = (List) query.execute
> ( employeeId );
>
> Should this work?  Or do I need to use an unowned one-to-many,
> replacing "private Employee employee;" with "private Key employeeId;"
> and then something like:
>
> Key employeeId = KeyFactory.createKey(Employee.class.getSimpleName(),
> "1234");
> query = pm.newQuery(ContactInfo.class);
> query.setFilter("employeeId == employeeParam");
> query.declareParameters("Key employeeParam");
> List employeeContacts = (List) query.execute
> ( employeeId );
>
> (I'm a bit confused by the difference between owned and unowned
> relationships)
> >
>

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[appengine-java] Re: Inheritance in JDO

[Jason (Google)]

No, this issue is still open.

- Jason

On Thu, Sep 3, 2009 at 3:22 PM, bgood  wrote:

>
> Does anyone know if this was fixed in the 1.2.5 SDK release announced
> today ?  (based on the status of the datanucleus-appengine/issues/list
> I would guess no.)
>
> I'd really like to start using JDO inheritance when it comes
> available.
> >
>

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[appengine-java] Re: Bulk writes to datastore

[Jason (Google)]

Batch puts are supported, yes, and as of yesterday's release, calling
makePersistentAll (JDO) and the equivalent JPA call will take advantage of
this support (previously, you had to use the low-level API).

Two quick notes:

1) All of the entities that you're persisting should be in separate entity
groups since two entities in the same entity group can't be written to
consecutively, and you will see datastore timeout exceptions if many
simultaneous write requests come in for the same entity or entity group.
2) Batch puts do not operate in a transaction. This means that some writes
may succeed but others may not, so if you need the ability to rollback,
you'll need transactions.

- Jason

Let me know if you have any more questions on this.

- Jason

On Thu, Sep 3, 2009 at 7:24 PM, Nicholas Albion  wrote:

>
> Is it possible to overcome the datastore's 10 writes/second limit by
> batching them?
>
> I've got a table containing just over one million records (in CSV
> format).  Does a batched write (of around 1MB of data and, say 1000
> records) count as one write, or 1000 writes?
> >
>

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[appengine-java] Re: Updating detached objects only works when fetched within a transaction (JDO)

[Jason (Google)]

I can see where our documentation is misleading about this topic, and I'm
working to get this updated.

- Jason

On Fri, Sep 4, 2009 at 4:54 PM, Jason (Google)  wrote:

> What code are you using to detach the entities? If you're just calling
> setDetachAllOnCommit, then yes, this requires a transaction. If you don't
> use transactions, then you can do something like this:
>
> obj = pm.getObjectById(Object.class, key);
> obj = pm.detachCopy(obj);
>
> There's a similar detachCopyAll for detaching Collections. I use these in
> my own applications and they work fine.
>
> - Jason
>
>
> On Thu, Sep 3, 2009 at 11:28 AM, Esteban Masoero  > wrote:
>
>>
>> Hi there,
>>
>> I'm having a problem similar to the one described here
>>
>> http://groups.google.com/group/google-appengine-java/browse_thread/thread/54c5c1e1ec1b3ff0/bcb54506ed134654?l
>> ,
>> but using JDO instead of JPA.
>> Instead of fetching the object in a "normal" way, I fetched it inside a
>> transaction and it worked fine (the object was properly detached).
>>
>> Should an issue be reported? or is this problem addressed by the the
>> issue 1906
>> (http://code.google.com/p/googleappengine/issues/detail?id=1906)? (I ask
>> it because as I see, the exceptions thrown by that JPA-examble are jdo
>> exceptions, so it gives me the feeling that JDO and JPA share some
>> components, and consequently it would be the same bug.)
>>
>> Thanks,
>>
>> Esteban
>>
>> >>
>>
>

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[appengine-java] Re: Updating detached objects only works when fetched within a transaction (JDO)

[Jason (Google)]

What code are you using to detach the entities? If you're just calling
setDetachAllOnCommit, then yes, this requires a transaction. If you don't
use transactions, then you can do something like this:

obj = pm.getObjectById(Object.class, key);
obj = pm.detachCopy(obj);

There's a similar detachCopyAll for detaching Collections. I use these in my
own applications and they work fine.

- Jason

On Thu, Sep 3, 2009 at 11:28 AM, Esteban Masoero
wrote:

>
> Hi there,
>
> I'm having a problem similar to the one described here
>
> http://groups.google.com/group/google-appengine-java/browse_thread/thread/54c5c1e1ec1b3ff0/bcb54506ed134654?l
> ,
> but using JDO instead of JPA.
> Instead of fetching the object in a "normal" way, I fetched it inside a
> transaction and it worked fine (the object was properly detached).
>
> Should an issue be reported? or is this problem addressed by the the
> issue 1906
> (http://code.google.com/p/googleappengine/issues/detail?id=1906)? (I ask
> it because as I see, the exceptions thrown by that JPA-examble are jdo
> exceptions, so it gives me the feeling that JDO and JPA share some
> components, and consequently it would be the same bug.)
>
> Thanks,
>
> Esteban
>
> >
>

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[appengine-java] Re: GAE takes 28 sec to read just 200 records

[Jason (Google)]

Based on one of your recent posts, it seems like multiple
PersistenceManagerFactory instances are being created by different
classloaders. Since this is an expensive operation, this could explain why
you're experiencing such slow performance. Did you follow Toby's suggestion
in the last post?
-
1)  Are you maybe loading that singleton class in different classloaders?
Try logging the classloader object reference that tries to create the
PersistenceManagerFactory. You can add a static initializer ABOVE
pmfInstance.

static {
  logger.log(Level.SEVERE, "Loading PMF in " + PMF.class.getClassLoader()");
}
-

- Jason

On Thu, Sep 3, 2009 at 10:03 AM, Vik  wrote:

> Hie
> Strange to hear that if it is creating PMF again
>
> Should it do it just once when i logged in? In the logging process I do get
> an instance of PMF. So, why it is doing that again?
> Any advise what may be going wrong here?
>
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Thu, Sep 3, 2009 at 10:25 PM, datanucleus wrote:
>
>>
>> >17.  I09-03 09:46AM 31.994
>> >
>> >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>> > com.google.apphosting.runtime.security.userclassloa...@8fcc7b
>> >
>> >18.  I09-03 09:46AM 41.622
>>
>> Don't you think it's a strange way to "benchmark" things by including
>> known one-off operations like creating a PMF ?
>> Personally that ought to be included in application startup timings,
>> rather than "time taken to read 200 records".
>>
>>
>>
>
> >
>

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[appengine-java] Re: querying using ANCESTOR IS

[Jason (Google)]

I'm glad you got it working using the low-level API. If you ever want to
return to JDO, see the last post in this thread, which describes how to
perform ancestor queries:
http://groups.google.com/group/google-appengine-java/browse_thread/thread/97ba3209ec6a65de

- Jason

On Thu, Sep 3, 2009 at 9:14 AM, Clay Lenhart  wrote:

>
> I got this working using the low-level API.
>
> Actually, I'm not sure what JDO gives you over this.  I wrap the low-
> level Entity with my class and give it getters and setters.  It
> doesn't feel any more or less verbose.
>
> >
>

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[appengine-java] Write text on an image..?

[jago]

Hi,

I want the user to fill some text in a textfield and then allow him to
hit a 'create' button. The text will written as a title on the top of
an image. The image will then be shown in the browser.

What I didn't figure out was how to write the text on the image file.
Can somebody help me with example code?
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[appengine-java] Re: How to make a isKeysOnly() query in JDO?

[Jason (Google)]

As of yesterday's 1.2.5, the JDO and JPA interfaces should issue a keys-only
query if you restrict the fields returned by your query to the primary key
only, addressing this particular issue:
http://code.google.com/p/datanucleus-appengine/issues/detail?id=77

- Jason

On Thu, Sep 3, 2009 at 7:07 AM, Corneliu Paul Lupulet <
corneliu.lupu...@gmail.com> wrote:

> There is! (check out this post about pagination:
> http://code.google.com/appengine/articles/paging.html )
> I've been successfully using something like this until now:
>
>  "select * from whatever and field1 = 'whatever' and ... and key >
> 'FGHFGHHDG453dfgd4453dDFDFG' order by whatever asc,   key asc
>
> My only issue is that i don't want the query to return the actual objects,
> but just their keys (it is supposedly much faster)
>
> On Thu, Sep 3, 2009 at 4:45 PM, leszek  wrote:
>
>>
>> But how do you want to accomplish it ? There is no query like "give me
>> the next no more than 1000 keys using filter key > lastkey".  Also
>> there is no query like "give me the least key using filter "key >
>> lastkey".
>>
>>
>
>
> --
> Corneliu Paul Lupulet
>
>
>
>
> >
>

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[appengine-java] Re: Is there limitation of size of webapp uploaded to GAE?

[Jason (Google)]

By default, all files under war are treated as both static and resource
files. You can modify your appengine-web.xml file to explicitly indicate
which files are static and which are resource:
http://code.google.com/appengine/docs/java/config/appconfig.html#Static_Files_and_Resource_Files

- Jason

On Thu, Sep 3, 2009 at 5:47 AM, barak  wrote:

>
> If I understood correctly - static files are the files that kept under
> the war directory. What are the resources files?
>
> On Sep 2, 7:19 pm, "Jason (Google)"  wrote:
> > Static files can be up to 10 MB each. There is no limit on the total
> storage
> > size for static files. There is, however for resource files -- the
> combined
> > size of all resource files can't exceed 150 MB.
> > - Jason
> >
> >
> >
> > On Mon, Aug 31, 2009 at 12:21 AM, barak  wrote:
> >
> > > I was wondering - does GAE has some limitation regarding the size of
> > > an applicatian uploaded to GAE? I know there is limitation regarding
> > > single size upload, but can my application for example holds hundreds
> > > of files (source, static, what ever)?
> >
> > > Thanks.- Hide quoted text -
> >
> > - Show quoted text -
> >
>

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[appengine-java] Re: HttpSession handling question

[Jason (Google)]

Hi Marton. Yes, you need to explicitly call setAttribute() when you modify
any object in the session. Otherwise, the object won't be updated in App
Engine's cache/datastore, which are the mechanisms it uses to back sessions
- Jason

On Thu, Sep 3, 2009 at 2:11 AM, Marton Papp  wrote:

>
> Hi!
>
> I am using HttpSession to store some information as session
> attributes. When I am testing the application locally, it works fine.
> But when I upload it to production, it seems that any session
> attributes that I retrieve from the session and modify it are not
> persisted back to the session again, unless I specifically call
> HttpSession.setAttribute() in each request. I am not sure whether it
> is the expected behavior or it is bug. Here are the two test cases:
>
> Test1:
>
> public class Test_gae_sessionServlet extends HttpServlet {
>private static final String SESSION_ATTRIBUTE_NAME =
> "test_session_attribute";
>
>public void doGet(HttpServletRequest req, HttpServletResponse resp)
>throws IOException {
>HttpSession session = req.getSession();
>resp.setContentType("text/plain");
>
>SessionContext sessionContext = (SessionContext)
> session.getAttribute
> (SESSION_ATTRIBUTE_NAME);
>
>resp.getWriter().println("session retreived: " +
> sessionContext);
>
>if (sessionContext==null) {
>sessionContext = new SessionContext();
>resp.getWriter().println("session created: " +
> sessionContext);
>
>// calling setAttribute only when the object is
> first created
>resp.getWriter().println("putting context into
> session: " +
> sessionContext);
>session.setAttribute(SESSION_ATTRIBUTE_NAME,
> sessionContext);
>}
>
>sessionContext.value++;
>
>resp.getWriter().println("context at end of retquest: " +
> sessionContext);
>}
> }
>
>
> Test2:
>
> public class Test_gae_sessionServlet extends HttpServlet {
>private static final String SESSION_ATTRIBUTE_NAME =
> "test_session_attribute";
>
>public void doGet(HttpServletRequest req, HttpServletResponse resp)
>throws IOException {
>HttpSession session = req.getSession();
>resp.setContentType("text/plain");
>
>SessionContext sessionContext = (SessionContext)
> session.getAttribute
> (SESSION_ATTRIBUTE_NAME);
>
>resp.getWriter().println("session retreived: " +
> sessionContext);
>
>if (sessionContext==null) {
>sessionContext = new SessionContext();
>resp.getWriter().println("session created: " +
> sessionContext);
>}
>
>// calling setAttribute in every request
>resp.getWriter().println("putting context into session: " +
> sessionContext);
>session.setAttribute(SESSION_ATTRIBUTE_NAME,
> sessionContext);
>
>sessionContext.value++;
>
>resp.getWriter().println("context at end of retquest: " +
> sessionContext);
>}
> }
>
>
> The object stored in the session:
>
> public class SessionContext implements Serializable {
>
>private static final long serialVersionUID = -5151175222401820614L;
>
>public int value = 0;
>
>@Override
>public String toString() {
>return "SessionContext [value=" + value + "]";
>}
>
> }
>
>
> In Test1 it is always the first version of the SessionContext that is
> retreived in each request, no matter that I try to change its contents
> during each request. Test2 works as expected. Is it so that I need to
> call HttpSession.setAttribute() for any object that is expected to
> change during the request? Is it according to the servlet
> specification?
>
>
> Marton
>
> >
>

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[appengine-java] Re: how to query to implement auto suggest query...

[Jason (Google)]

By "they shouldn't be too hard to find," I meant that any examples you find
shouldn't be too hard to tailor for App Engine, even if they are
RDBMS-based.
- Jason

On Fri, Sep 4, 2009 at 4:06 PM, Jason (Google)  wrote:

> There are numerous tutorials out in the wild for this. I don't know of any
> App Engine-specific examples, but they shouldn't be too hard to find. Since
> App Engine doesn't currently support full-text search, you'll only be able
> to match entities on their opening characters.
>
> http://www.dynamicajax.com/fr/AJAX_Suggest_Tutorial-.html
> http://www.google.com/search?q=ajax+suggest
>
> - Jason
>
> On Thu, Sep 3, 2009 at 3:08 AM, mar_novice wrote:
>
>>
>> Hi,
>> I dont know how to implement a back-end for an autosuggest query.
>> The idea is if a user type
>> "sa", the servlet will query from the datastore, for example employee
>> names that starts with "sa".
>>
>> Any body knows how to implement this??
>>
>> Thanks...
>>
>> -mar_novice
>>
>> >>
>>
>

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[appengine-java] Re: how to query to implement auto suggest query...

[Jason (Google)]

There are numerous tutorials out in the wild for this. I don't know of any
App Engine-specific examples, but they shouldn't be too hard to find. Since
App Engine doesn't currently support full-text search, you'll only be able
to match entities on their opening characters.

http://www.dynamicajax.com/fr/AJAX_Suggest_Tutorial-.html
http://www.google.com/search?q=ajax+suggest

- Jason

On Thu, Sep 3, 2009 at 3:08 AM, mar_novice  wrote:

>
> Hi,
> I dont know how to implement a back-end for an autosuggest query.
> The idea is if a user type
> "sa", the servlet will query from the datastore, for example employee
> names that starts with "sa".
>
> Any body knows how to implement this??
>
> Thanks...
>
> -mar_novice
>
> >
>

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[appengine-java] Re: Confirmation of Google Multi-Tenant app policy

[doc]

Thank you Jason for your reply

I will file


On 9月5日, 午前2:53, "Jason (Google)"  wrote:
> Currently, registering multiple IDs for the same application is a violation
> of the App Engine terms of service. However, we do have an exception policy
> in place for developers with a multi-tenant strategy, and we handle these on
> a case-by-case basis. To begin, please file a new multi-instance exception
> request:
>
> http://code.google.com/support/bin/request.py?contact_type=AppEngineM...
>
> - Jason
>
> On Wed, Sep 2, 2009 at 5:33 AM, doc123  wrote:
>
> > Hi
>
> > Now I am planning to start free project management service  =>
> >http://www.chainofasker.com/by using Google App Engine
>
> > When I try to provide this free project management service, problem is
> > server fee because once I release this service,  I can not expect how
> > many user come to this site and use free service.
>
> > So I want to ask user to have their dedicated server if they want use
> > stable service. Procedure is following
>
> > User create User own account at Google app engine site.
> > User nominate me as a administrator or invite me as a developer.
> > I install server software.
> > User remove me from administrator list.
> > User start using my service
>
> > Is this meet Google App Engine’s terms of use?
>
> > I found related article which is posted by Jason but now I can not
> > find it url so I post previous multi-tenant discussion image to here
> > =>http://www.chainofasker.com/muti-tenant-past-post
>
> > I think above procedure is keeping Jason’s recommendation.
>
>
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[appengine-java] QueueFactory.getQueue( String )

[Vince Bonfanti]

My first question on task queues...

I'd like to design my application to use a named (configured) queue if
it exists, but to drop back to using the default queue if the named
queue isn't configured. I'd like to do something like this:

Queue q = QueueFactory.getQueue( "myQueue" );
if ( q == null ) {
q = QueueFactory.getDefaultQueue();
}

But, the documentation for QueueFactory.getQueue( String ) implies
that this isn't how it works:

"Attempting to use a non-existing queue name may result in errors
at the point of use of the Queue object and not when calling
getQueue(String)."

Is there a way to simply and reliably determine whether a given queue
name has been configured?

Vince

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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

Your app:

/showsort/list 500 41106ms
> /showsort/list 500 29590ms
> /showsort/list 500 40991ms
> /showsort/list 500 40340ms
> /showsort/list 500 30155ms
> /showsort/list 500 35481ms
> /showsort/list 500 40109ms
> /showsort/list 500 42148ms
>
> /showsort/list
> com.google.apphosting.api.DeadlineExceededException: This request
> (675bc7926055c7e2) started at 2009/09/04 21:33:38.750 UTC and was still
> executing at 2009/09/04 21:34:07.223 UTC


You are exceeding the 30s request deadline with prejudice on every single
request to /showsort/list. Your app gets terminated each time, which causes
it to have to be reloaded from scratch for subsequent requests. App reloads
can be expensive (and it appears that yours are), and that seems likely to
be the root cause behind the warnings you're receiving about excessively
high latency. In terms of quota, the warning is specifically describing your
"simultaneous active request limit", not long-term quota like CPU time or
datastore usage.

On Fri, Sep 4, 2009 at 3:56 PM, Xlorep DarkHelm  wrote:

>
> Request deadline? I've not been exceeding any request deadline. I'm
> getting this a lot now:
>
> #
>
>   1.
>  09-04 12:01PM 00.892 /showsort/list-- 500 10455ms 0cpu_ms 0kb
> Mozilla/5.0 (en-us) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1
> Safari/525.13,gzip(gfe)
>  See details
>
>  72.14.192.66 - - [04/Sep/2009:12:01:11 -0700] "GET /showsort/
> list-- HTTP/1.1" 500 0 - "Mozilla/5.0 (en-us) AppleWebKit/525.13
> (KHTML, like Gecko) Version/3.1 Safari/525.13,gzip(gfe)"
> "showsort.appspot.com"
>
>   2.
>  W 09-04 12:01PM 11.348
>
>  Request was aborted after waiting too long to attempt to service
> your request. Most likely, this indicates that you have reached your
> simultaneous active request limit. This is almost always due to
> excessively high latency in your app. Please see
> http://code.google.com/appengine/docs/quotas.html for more details.
>
>
> ---
>
> the problem with this is when I check my Quota page, I'm way, WAY
> below my limit. There are only two things that show any sign of being
> used by the quotas:
>
> CPU Time4%  0.27 of 6.50 CPU hours  Okay
>
> Deployments 2%  6 of 250Okay
>
> Everything else is at 0%.
>
> My requests are:
>
> Requests0%  201 of 128  Okay
>
>
> If I've reached my "simultaneous active request limit", somehow...
> where would I even be able to see that? I'm thinking that's a false
> alarm. Especially as my app really is not that taxing, at all. The
> vast majority of the processing for it (the graphics/UI processing) is
> done through GWT on the client side.
>
>
> On Sep 4, 11:57 am, Toby Reyelts  wrote:
> > Unfortunately, when you exceed the request deadline, you can lose your
> logs
> > for that request. I would suggest paring your RPC down to the very bare
> > minimum, so that you're not exceeding the deadline, then adding in logic
> and
> > logging timings as you go. You should then be able to narrow things down
> to
> > the slow operations which are causing you problems.
>
> >
>

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[appengine-java] Re: Discussion on will-it-play-in-app-engine

[Toby Reyelts]

Jimbo,

Would you mind seeing if this issue goes away with the latest 1.2.5?

On Tue, Aug 25, 2009 at 4:03 AM, Jimbo  wrote:

>
> Hi,
>
> I managed to get spring security working by amending the source as
> suggested at: http://www.dotnetguru2.org/bmarchesson/index.php?p=1100
>
> If anyone would like a link to the re-compiled core jar I created
> please feel free to download at:
>
>
> http://www.google-app-engine.com/blog/post/Spring-security-fix-for-google-app-engine.aspx
>
> Jim
> >
>

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[appengine-java] Re: new stack traces after upgrading to SDK 1.2.5

[Vince Bonfanti]

That's fine. :)

I just wanted to make sure someone was aware of this, since it
appeared to be something new introduced with the latest SDK.

On Fri, Sep 4, 2009 at 4:14 PM, Toby Reyelts wrote:
> It's a message that you can safely ignore. There is a reason it's logged at
> INFO. :)
>

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

When uploading a new version, with a few more levels of debugging
enabled:


Compiling module org.darkhelm.showsort.ShowSort
   Compiling 6 permutations
  Permutation compile succeeded
   Linking into F:\Documents\Eclipse\workspace\ShowSort\war
  Link succeeded
   Compilation succeeded -- 95.312s
Creating staging directory
Scanning for jsp files.
Compiling jsp files.
Compiling java files.
Scanning files on local disk.
Initiating update.
Cloning 31 static files.
Cloning 116 application files.
Cloned 100 files.
Uploading 3 files.
Uploaded 1 files.
Uploaded 2 files.
Uploaded 3 files.
Deploying new version.
Rolling back the update.
java.io.IOException: Error posting to URL:
http://appengine.google.com/api/appversion/deploy?app_id=showsort&version=1&;
500 Internal Server Error

Server Error (500)
A server error has occurred.


Debugging information may be found in F:\Documents\Eclipse\temp
\appengine-deploy8021509217612458213.log

Contents of that file:

Unable to upload:
java.io.IOException: Error posting to URL:
http://appengine.google.com/api/appversion/deploy?app_id=showsort&version=1&;
500 Internal Server Error

Server Error (500)
A server error has occurred.

at com.google.appengine.tools.admin.ServerConnection.send
(ServerConnection.java:143)
at com.google.appengine.tools.admin.ServerConnection.post
(ServerConnection.java:81)
at com.google.appengine.tools.admin.AppVersionUpload.send
(AppVersionUpload.java:429)
at com.google.appengine.tools.admin.AppVersionUpload.deploy
(AppVersionUpload.java:388)
at com.google.appengine.tools.admin.AppVersionUpload.commit
(AppVersionUpload.java:351)
at com.google.appengine.tools.admin.AppVersionUpload.doUpload
(AppVersionUpload.java:111)
at com.google.appengine.tools.admin.AppAdminImpl.update
(AppAdminImpl.java:53)
at com.google.appengine.eclipse.core.proxy.AppEngineBridgeImpl.deploy
(AppEngineBridgeImpl.java:271)
at
com.google.appengine.eclipse.core.deploy.DeployProjectJob.runInWorkspace
(DeployProjectJob.java:148)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run
(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

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[appengine-java] Re: After upgrade to Java SDK 1.2.5 Key property saved but retrieved as null

[Yegor]

Just so you know, I think I have solved the problem by setting
defaultFetchGroup="true" on the Key property:

@Persistent(defaultFetchGroup="true")
private Key text;

Might have something to do with the recently closed issue #58 "Queries
don't respect fetch groups": 
http://code.google.com/p/datanucleus-appengine/issues/detail?id=58

What's puzzling is that I have unowned relationships all over the
application, however only one class - CMSPage - fails to retrieve the
Key properties.

I am not sure why Key is not automatically in the default fetch group.
Key is not an entity class. It should be ok to fetch it non-lazily by
default.

Yegor

On Sep 4, 1:21 pm, Yegor  wrote:
> Hi,
>
> I am experiencing a problem after upgrading to Java SDK 1.2.5. In a
> simple CMS application a page is stored as a CMSPage entity, which
> points to its text saved as a DetachedText entity using a Key property
> (i.e. an unowned relationship) as follows:
>
> @PersistenceCapable(identityType = IdentityType.APPLICATION)
> public class CMSPage {
>
>   @PrimaryKey
>   @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
>   private Key id;
>
>   @Persistent
>   private Key text;
>
>   public Key getId() {
>     return id;
>   }
>
>   public void setId(Key id) {
>     this.id = id;
>   }
>
>   public Key getText() {
>     return text;
>   }
>
>   public void setText(Key text) {
>     this.text = text;
>   }
>
> }
>
> The Key property "text" points to:
>
> @PersistenceCapable(identityType = IdentityType.APPLICATION)
> public class DetachedText {
>
>   @PrimaryKey
>   @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
>   private Key id;
>
>   @Persistent
>   private Text content;
>
>   public DetachedText(Text content) {
>     this.content = content;
>   }
>
>   public Key getId() {
>     return id;
>   }
>
>   public Text getContent() {
>     return content;
>   }
>
> }
>
> NOTE: I have removed other properties and code that I found unrelated
> to the problem
>
> After saving the page I can see the "text" field populated in the
> development console. The value shows as "DetachedText(5)". I also
> verified that the DetachedText entity exists and its ID equals 5.
>
> However, after I retrieve CMSPage from the datastore using a
> javax.jdo.Query the "text" field in the retrieved object is null (both
> the Eclipse debugger and the application throwing NPE confirm it).
>
> What am I doing wrong?
>
> Any pointers will be appreciated.
>
> Thanks,
>
> Yegor
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[appengine-java] Discussion on will-it-play-in-app-engine

[Geraldo Lopes]

Please create a JasperReports entry.
Sadly it's not compatible
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[appengine-java] Re: new stack traces after upgrading to SDK 1.2.5

[Yegor]

Vince,

If you are interested the reason for the exception is that App Engine
does not support threads. Reference finalizer usually runs as a
separate thread. In this case the finalizer (correctly) failed to
initialize. However, it looks like finalizer is not a critical
component in this context.

Guice prints a similar stacktrace for its reference finalizer too,
also as INFO.

Cheers,

Yegor


On Sep 4, 1:41 pm, Vince Bonfanti  wrote:
> After upgrading to SDK 1.2.5, I've noticed a set of stack traces that
> show up in both the development environment and on the production
> server. These only appear if the logging level is set to INFO, and
> they show up as INFO logs on the production server. I'm pretty sure
> these are new in SDK 1.2.5 since I've been running at the INFO logging
> level for quite some time. They only happen for the first request
> after the application has been restarted. From my production server:
>
> com.google.appengine.repackaged.com.google.common.base.FinalizableReference 
> Queue$SystemLoader
> loadFinalizer: Not allowed to access system class loader.
>
> com.google.appengine.repackaged.com.google.common.base.internal.Finalizer
> getInheritableThreadLocalsField: Couldn't access
> Thread.inheritableThreadLocals. Reference finalizer threads will
> inherit thread local values.
>
> com.google.appengine.repackaged.com.google.common.base.FinalizableReference 
> Queue
> : Failed to start reference finalizer thread. Reference cleanup
> will only occur when new references are created.
> java.lang.reflect.InvocationTargetException
>         at 
> com.google.appengine.runtime.Request.process-ad303eae7c610e90(Request.java)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>         at java.lang.reflect.Method.invoke(Method.java:40)
>         at 
> com.google.appengine.repackaged.com.google.common.base.FinalizableReference 
> Queue.(FinalizableReferenceQueue.java:124)
>         at 
> com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools$ 
> WeakInterningPool.(InterningPools.java:104)
>         at 
> com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools. 
> newWeakInterningPool(InterningPools.java:48)
>         at 
> com.google.appengine.repackaged.com.google.io.protocol.ProtocolSupport. nit>(ProtocolSupport.java:55)
>         at 
> com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:1072)
>         at 
> com.google.apphosting.api.DatastorePb$Query$1.(DatastorePb.java:2355)
>         at 
> com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:2355)
>         at 
> com.google.appengine.api.datastore.QueryTranslator.convertToPb(QueryTransla 
> tor.java:27)
>         at 
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.c 
> onvertToPb(DatastoreServiceImpl.java:357)
>         at 
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.r 
> unQuery(DatastoreServiceImpl.java:339)
>         at 
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.a 
> ccess$100(DatastoreServiceImpl.java:269)
>         at 
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl$1 
> .iterator(DatastoreServiceImpl.java:303)
>         at 
> org.apache.jsp.test.listEntities_jsp._jspService(listEntities_jsp.java:49)
>         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>         at 
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> ...truncated
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[appengine-java] Re: new stack traces after upgrading to SDK 1.2.5

[Toby Reyelts]

It's a message that you can safely ignore. There is a reason it's logged at
INFO. :)

On Fri, Sep 4, 2009 at 3:41 PM, Vince Bonfanti  wrote:

>
> After upgrading to SDK 1.2.5, I've noticed a set of stack traces that
> show up in both the development environment and on the production
> server. These only appear if the logging level is set to INFO, and
> they show up as INFO logs on the production server. I'm pretty sure
> these are new in SDK 1.2.5 since I've been running at the INFO logging
> level for quite some time. They only happen for the first request
> after the application has been restarted. From my production server:
>
>
> com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue$SystemLoader
> loadFinalizer: Not allowed to access system class loader.
>
> com.google.appengine.repackaged.com.google.common.base.internal.Finalizer
> getInheritableThreadLocalsField: Couldn't access
> Thread.inheritableThreadLocals. Reference finalizer threads will
> inherit thread local values.
>
>
> com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue
> : Failed to start reference finalizer thread. Reference cleanup
> will only occur when new references are created.
> java.lang.reflect.InvocationTargetException
>at
> com.google.appengine.runtime.Request.process-ad303eae7c610e90(Request.java)
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>at java.lang.reflect.Method.invoke(Method.java:40)
>at
> com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue.(FinalizableReferenceQueue.java:124)
>at
> com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools$WeakInterningPool.(InterningPools.java:104)
>at
> com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools.newWeakInterningPool(InterningPools.java:48)
>at
> com.google.appengine.repackaged.com.google.io.protocol.ProtocolSupport.(ProtocolSupport.java:55)
>at
> com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:1072)
>at
> com.google.apphosting.api.DatastorePb$Query$1.(DatastorePb.java:2355)
>at
> com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:2355)
>at
> com.google.appengine.api.datastore.QueryTranslator.convertToPb(QueryTranslator.java:27)
>at
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.convertToPb(DatastoreServiceImpl.java:357)
>at
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.runQuery(DatastoreServiceImpl.java:339)
>at
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.access$100(DatastoreServiceImpl.java:269)
>at
> com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl$1.iterator(DatastoreServiceImpl.java:303)
>at
> org.apache.jsp.test.listEntities_jsp._jspService(listEntities_jsp.java:49)
>at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> ...truncated
>
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Request deadline? I've not been exceeding any request deadline. I'm
getting this a lot now:

#

   1.
  09-04 12:01PM 00.892 /showsort/list-- 500 10455ms 0cpu_ms 0kb
Mozilla/5.0 (en-us) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1
Safari/525.13,gzip(gfe)
  See details

  72.14.192.66 - - [04/Sep/2009:12:01:11 -0700] "GET /showsort/
list-- HTTP/1.1" 500 0 - "Mozilla/5.0 (en-us) AppleWebKit/525.13
(KHTML, like Gecko) Version/3.1 Safari/525.13,gzip(gfe)"
"showsort.appspot.com"

   2.
  W 09-04 12:01PM 11.348

  Request was aborted after waiting too long to attempt to service
your request. Most likely, this indicates that you have reached your
simultaneous active request limit. This is almost always due to
excessively high latency in your app. Please see
http://code.google.com/appengine/docs/quotas.html for more details.


---

the problem with this is when I check my Quota page, I'm way, WAY
below my limit. There are only two things that show any sign of being
used by the quotas:

CPU Time4%  0.27 of 6.50 CPU hours  Okay

Deployments 2%  6 of 250Okay

Everything else is at 0%.

My requests are:

Requests0%  201 of 128  Okay


If I've reached my "simultaneous active request limit", somehow...
where would I even be able to see that? I'm thinking that's a false
alarm. Especially as my app really is not that taxing, at all. The
vast majority of the processing for it (the graphics/UI processing) is
done through GWT on the client side.


On Sep 4, 11:57 am, Toby Reyelts  wrote:
> Unfortunately, when you exceed the request deadline, you can lose your logs
> for that request. I would suggest paring your RPC down to the very bare
> minimum, so that you're not exceeding the deadline, then adding in logic and
> logging timings as you go. You should then be able to narrow things down to
> the slow operations which are causing you problems.

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

I set up a doGet method on my list servlet, which should just display
the list of algorithm names that is retrieved from the datastore.
There are 13 items in the list, not much.

http://showsort.appspot.com/showsort/list

This way, you don't need to use the rest of the app to see this.

I'm getting a 500 Server Error. There has been two times that I have
gotten more than just the initial request line logged in the Admin
Panel's logs. Both times, it halts on the step where it is trying to
read from the DataStore. My code to do that worked just fine before
the 1.2.5 change 2 days ago. Now it seems to be hanging and getting a
hard deadline limit error produced:

09-04 01:55PM 50.733

/showsort/list
com.google.apphosting.api.DeadlineExceededException: This request
(8d11090a3c971760) started at 2009/09/04 20:55:22.204 UTC and was
still executing at 2009/09/04 20:55:50.718 UTC.
at org.python.core.PyException.tracebackHere(PyException.java:155)
at org.python.core.PyException.tracebackHere(PyException.java:145)
at org.python.core.PyTableCode.call(PyTableCode.java:169)
at org.python.core.PyBaseCode.call(PyBaseCode.java:297)
at org.python.core.PyBaseCode.call(PyBaseCode.java:191)
at org.python.core.PyFunction.__call__(PyFunction.java:385)
at org.python.core.PyMethod.__call__(PyMethod.java:215)
at org.python.core.PyMethod.instancemethod___call__(PyMethod.java:
221)
at org.python.core.PyMethod.__call__(PyMethod.java:206)
at org.python.core.PyObject.__call__(PyObject.java:367)
at org.python.core.PyObject._jcallexc(PyObject.java:3504)
at org.python.core.PyObject._jcall(PyObject.java:3536)
at org.python.proxies.os$PythonPOSIXHandler$0.error(Unknown Source)
at org.python.posix.JavaLibCHelper.stat(JavaLibCHelper.java:172)
at org.python.posix.JavaPOSIX.stat(JavaPOSIX.java:172)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_
$3.run(Method_.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at
com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke
(Method_.java:162)
at
com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke_
(Method_.java:131)
at
com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke
(Method_.java:40)
at org.python.core.PyReflectedFunction.__call__
(PyReflectedFunction.java:175)
at org.python.core.PyObject.__call__(PyObject.java:355)
at org.python.core.PyMethod.__call__(PyMethod.java:215)
at org.python.core.PyMethod.instancemethod___call__(PyMethod.java:
221)
at org.python.core.PyMethod.__call__(PyMethod.java:206)
at org.python.core.PyObject.__call__(PyObject.java:397)
at org.python.core.PyObject.__call__(PyObject.java:401)
at os$py.stat$38(/base/data/home/apps/showsort/1.336107385381934633/
WEB-INF/lib-python/Lib.zip/os.py:497)
at os$py.call_function(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/os.py)
at org.python.core.PyTableCode.call(PyTableCode.java:165)
at org.python.core.PyBaseCode.call(PyBaseCode.java:131)
at org.python.core.PyFunction.__call__(PyFunction.java:317)
at linecache$py.updatecache$5(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/linecache.py:136)
at linecache$py.call_function(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/linecache.py)
at org.python.core.PyTableCode.call(PyTableCode.java:165)
at org.python.core.PyBaseCode.call(PyBaseCode.java:146)
at org.python.core.PyFunction.__call__(PyFunction.java:327)
at linecache$py.getlines$3(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/linecache.py:40)
at linecache$py.call_function(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/linecache.py)
at org.python.core.PyTableCode.call(PyTableCode.java:165)
at org.python.core.PyBaseCode.call(PyBaseCode.java:146)
at org.python.core.PyFunction.__call__(PyFunction.java:327)
at inspect$py.findsource$30(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/inspect.py:522)
at inspect$py.call_function(/base/data/home/apps/showsort/
1.336107385381934633/WEB-INF/lib-python/Lib.zip/inspect.py)
at org.python.core.PyTableCode.call(PyTableCode.java:165)
at org.python.core.PyBaseCode.call(PyBaseCode.java:131)
at org.python.core.PyFunction.__call__(PyFunction.java:317)
at inspect$py.getframe

[appengine-java] new stack traces after upgrading to SDK 1.2.5

[Vince Bonfanti]

After upgrading to SDK 1.2.5, I've noticed a set of stack traces that
show up in both the development environment and on the production
server. These only appear if the logging level is set to INFO, and
they show up as INFO logs on the production server. I'm pretty sure
these are new in SDK 1.2.5 since I've been running at the INFO logging
level for quite some time. They only happen for the first request
after the application has been restarted. From my production server:

com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue$SystemLoader
loadFinalizer: Not allowed to access system class loader.

com.google.appengine.repackaged.com.google.common.base.internal.Finalizer
getInheritableThreadLocalsField: Couldn't access
Thread.inheritableThreadLocals. Reference finalizer threads will
inherit thread local values.

com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue
: Failed to start reference finalizer thread. Reference cleanup
will only occur when new references are created.
java.lang.reflect.InvocationTargetException
at 
com.google.appengine.runtime.Request.process-ad303eae7c610e90(Request.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Method.java:40)
at 
com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue.(FinalizableReferenceQueue.java:124)
at 
com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools$WeakInterningPool.(InterningPools.java:104)
at 
com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools.newWeakInterningPool(InterningPools.java:48)
at 
com.google.appengine.repackaged.com.google.io.protocol.ProtocolSupport.(ProtocolSupport.java:55)
at 
com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:1072)
at 
com.google.apphosting.api.DatastorePb$Query$1.(DatastorePb.java:2355)
at 
com.google.apphosting.api.DatastorePb$Query.(DatastorePb.java:2355)
at 
com.google.appengine.api.datastore.QueryTranslator.convertToPb(QueryTranslator.java:27)
at 
com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.convertToPb(DatastoreServiceImpl.java:357)
at 
com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.runQuery(DatastoreServiceImpl.java:339)
at 
com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl.access$100(DatastoreServiceImpl.java:269)
at 
com.google.appengine.api.datastore.DatastoreServiceImpl$PreparedQueryImpl$1.iterator(DatastoreServiceImpl.java:303)
at 
org.apache.jsp.test.listEntities_jsp._jspService(listEntities_jsp.java:49)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
...truncated

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[appengine-java] Java memcache "increment with initial value"

[Vince Bonfanti]

I notice that the Python memcache API supports an "increment with
initial value" operation:


http://code.google.com/appengine/docs/python/memcache/clientclass.html#Client_incr

Are there any plans to support this on Java? In the Python
implementation, is this simply done as three memcache calls, something
like this:

Long counter = memcache.increment( key, 1 );
if ( counter == null ) {
memcache.put( key, (long)0, null, SetPolicy.ADD_ONLY_IF_NOT_PRESENT );
counter = memcache.increment( key, 1 );
}

If that's all Python is doing, then I don't see any value of adding it
to Java; but, if the Python implementation is somehow more efficient
than the three memcache calls in the Java example above, then I'd like
to see it added to Java.

Thanks.

Vince

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[appengine-java] After upgrade to Java SDK 1.2.5 Key property saved but retrieved as null

[Yegor]

Hi,

I am experiencing a problem after upgrading to Java SDK 1.2.5. In a
simple CMS application a page is stored as a CMSPage entity, which
points to its text saved as a DetachedText entity using a Key property
(i.e. an unowned relationship) as follows:

@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class CMSPage {

  @PrimaryKey
  @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
  private Key id;

  @Persistent
  private Key text;

  public Key getId() {
return id;
  }

  public void setId(Key id) {
this.id = id;
  }

  public Key getText() {
return text;
  }

  public void setText(Key text) {
this.text = text;
  }

}

The Key property "text" points to:

@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class DetachedText {

  @PrimaryKey
  @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
  private Key id;

  @Persistent
  private Text content;

  public DetachedText(Text content) {
this.content = content;
  }

  public Key getId() {
return id;
  }

  public Text getContent() {
return content;
  }

}

NOTE: I have removed other properties and code that I found unrelated
to the problem

After saving the page I can see the "text" field populated in the
development console. The value shows as "DetachedText(5)". I also
verified that the DetachedText entity exists and its ID equals 5.

However, after I retrieve CMSPage from the datastore using a
javax.jdo.Query the "text" field in the retrieved object is null (both
the Eclipse debugger and the application throwing NPE confirm it).

What am I doing wrong?

Any pointers will be appreciated.

Thanks,

Yegor
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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

Unfortunately, when you exceed the request deadline, you can lose your logs
for that request. I would suggest paring your RPC down to the very bare
minimum, so that you're not exceeding the deadline, then adding in logic and
logging timings as you go. You should then be able to narrow things down to
the slow operations which are causing you problems.

On Fri, Sep 4, 2009 at 2:35 PM, Xlorep DarkHelm  wrote:

>
> Yes, I've upgraded to 1.2.5, I did yesterday in an effort to figure
> this out myself, and it didn't affect anything. My app is using:
>
> Google App Engine 1.2.5
> Google Web Toolkit 1.7.0
> GWT-Incubator for 1.7.0 (14 Jul 2009)
> Jython 2.5.0
>
> I'm doing everything in Eclipse 3.5 (Galileo) with the Google Plugin
> for Eclipse 3.5, 1.1.0 and Pydev 1.5.0 (for my Jython stuff)
>
> On Sep 4, 11:28 am, Toby Reyelts  wrote:
> > Before we go any further, can you confirm that you've upgraded your
> > application to the latest 1.2.5 version, including updating all App
> Engine
> > libraries (such as appengine-api.jar and the ORM libraries) in your
> > WEB-INF/lib? This shouldn't be strictly necessary, but it would help
> narrow
> > down the problem.
> >
> > On Fri, Sep 4, 2009 at 2:21 PM, Xlorep DarkHelm 
> wrote:
> >
> > > Ok, I added in logging directly to the servlet facade I have which
> > > wraps my Jython servlet to make it work on Google Apps Engine, and I'm
> > > not even getting that to show up in the logs. Here's what my last
> > > request produced (when I show requests only):
> >
> > > #
> >
> > >   1.
> > >  09-04 11:08AM 17.783 /showsort/list 500 42787ms 131cpu_ms
> > > 131api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
> > > 1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip(gfe)
> > >  See details
> >
> > >  207.166.99.104 - - [04/Sep/2009:11:09:00 -0700] "POST /showsort/
> > > list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
> > > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > > (gfe)"
> >
> > > This is from the GWT-RPC request, just before it, everything is
> > > working perfectly fine for my /showsort/display servlet:
> >
> > > #
> >
> > >   1.
> > >  09-04 11:08AM 17.781 /showsort/display 200 5576ms 9100cpu_ms 1kb
> > > Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/
> > > 20090729 Firefox/3.5.2,gzip(gfe)
> > >  See details
> >
> > >  207.166.99.104 - - [04/Sep/2009:11:08:23 -0700] "POST /showsort/
> > > display HTTP/1.1" 200 1346 "http://showsort.appspot.com/showsort/
> > > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > > (gfe)" "showsort.appspot.com"
> >
> > >   2.
> > >  D 09-04 11:08AM 20.932
> >
> > >  DisplayServlet start: [ENTER]
> >
> > >   3.
> > >  D 09-04 11:08AM 21.264
> >
> > >  DisplayServlet start: [LEVEL 1] Client ID =
> > > e9d1b50f-997d-11de-86aa-bb87edc68d5c
> >
> > >   4.
> > >  D 09-04 11:08AM 21.811
> >
> > >  DisplayServlet run: [LEVEL 1] Starting step: Initialize.
> >
> > >   5.
> > >  I 09-04 11:08AM 22.263
> >
> > >  DisplayServlet run: Time to process Initialize: 0.00799989700317
> >
> > >   6.
> > >  I 09-04 11:08AM 22.617
> >
> > >  DisplayServlet start: Number of updates returned: 102
> >
> > >   7.
> > >  D 09-04 11:08AM 23.032
> >
> > >  DisplayServlet start: [EXIT]
> >
> > > And then I have the requests for the various resources the page
> > > initially requests, and the original "main" servlet at / shows this:
> >
> > > #
> >
> > >   1.
> > >  09-04 11:07AM 58.906 / 200 17476ms 29205cpu_ms 0kb Mozilla/5.0
> > > (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
> > > 3.5.2,gzip(gfe)
> > >  See details
> >
> > >  207.166.99.104 - - [04/Sep/2009:11:08:16 -0700] "GET / HTTP/1.1"
> > > 200 703 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
> > > Gecko/20090729 Firefox/3.5.2,gzip(gfe)" "showsort.appspot.com"
> >
> > >   2.
> > >  W 09-04 11:08AM 01.891
> >
> > >  [showsort/1.336104640234288137].: *sys-package-mgr*: The
> > > java security manager isn't allowing access to the package cache dir,
> > > 'cachedir/packages'
> >
> > > Which is fine. Now, I've checked my web.xml file, and it seems to be
> > > correct, I've checked the Service interface in my GWT code and it is
> > > pointing to the correct path to access the servlet, and I've rechecked
> > > my code that calls the GWT-RPC servlet, and the servlet (and servlet
> > > facade), it all is fine.
> >
> > > There just doesn't seem to be any connection going on here.
> >
> > > Now, I *know* that going to a GWT-RPC servlet RemoteServlet doesn't
> > > work... but I'm getting 2 different kinds of responses, depending on
> > > my servlet.
> >
> > > If I go to:http://showsort.appspot.com/showsort/display-- in Mozilla
> > > Firefox, I get a bl

[appengine-java] Re: JCache best practices

[Erem]

> What about CacheFactory?

On second thought, I suppose I should'nt just carry one of these
around cause then I could never get to the same cache again w/o going
back to an instance of CacheManager

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Yes, I've upgraded to 1.2.5, I did yesterday in an effort to figure
this out myself, and it didn't affect anything. My app is using:

Google App Engine 1.2.5
Google Web Toolkit 1.7.0
GWT-Incubator for 1.7.0 (14 Jul 2009)
Jython 2.5.0

I'm doing everything in Eclipse 3.5 (Galileo) with the Google Plugin
for Eclipse 3.5, 1.1.0 and Pydev 1.5.0 (for my Jython stuff)

On Sep 4, 11:28 am, Toby Reyelts  wrote:
> Before we go any further, can you confirm that you've upgraded your
> application to the latest 1.2.5 version, including updating all App Engine
> libraries (such as appengine-api.jar and the ORM libraries) in your
> WEB-INF/lib? This shouldn't be strictly necessary, but it would help narrow
> down the problem.
>
> On Fri, Sep 4, 2009 at 2:21 PM, Xlorep DarkHelm  wrote:
>
> > Ok, I added in logging directly to the servlet facade I have which
> > wraps my Jython servlet to make it work on Google Apps Engine, and I'm
> > not even getting that to show up in the logs. Here's what my last
> > request produced (when I show requests only):
>
> > #
>
> >   1.
> >      09-04 11:08AM 17.783 /showsort/list 500 42787ms 131cpu_ms
> > 131api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
> > 1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:09:00 -0700] "POST /showsort/
> > list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
> > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > (gfe)"
>
> > This is from the GWT-RPC request, just before it, everything is
> > working perfectly fine for my /showsort/display servlet:
>
> > #
>
> >   1.
> >      09-04 11:08AM 17.781 /showsort/display 200 5576ms 9100cpu_ms 1kb
> > Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/
> > 20090729 Firefox/3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:08:23 -0700] "POST /showsort/
> > display HTTP/1.1" 200 1346 "http://showsort.appspot.com/showsort/
> > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > (gfe)" "showsort.appspot.com"
>
> >   2.
> >      D 09-04 11:08AM 20.932
>
> >      DisplayServlet start: [ENTER]
>
> >   3.
> >      D 09-04 11:08AM 21.264
>
> >      DisplayServlet start: [LEVEL 1] Client ID =
> > e9d1b50f-997d-11de-86aa-bb87edc68d5c
>
> >   4.
> >      D 09-04 11:08AM 21.811
>
> >      DisplayServlet run: [LEVEL 1] Starting step: Initialize.
>
> >   5.
> >      I 09-04 11:08AM 22.263
>
> >      DisplayServlet run: Time to process Initialize: 0.00799989700317
>
> >   6.
> >      I 09-04 11:08AM 22.617
>
> >      DisplayServlet start: Number of updates returned: 102
>
> >   7.
> >      D 09-04 11:08AM 23.032
>
> >      DisplayServlet start: [EXIT]
>
> > And then I have the requests for the various resources the page
> > initially requests, and the original "main" servlet at / shows this:
>
> > #
>
> >   1.
> >      09-04 11:07AM 58.906 / 200 17476ms 29205cpu_ms 0kb Mozilla/5.0
> > (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
> > 3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:08:16 -0700] "GET / HTTP/1.1"
> > 200 703 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
> > Gecko/20090729 Firefox/3.5.2,gzip(gfe)" "showsort.appspot.com"
>
> >   2.
> >      W 09-04 11:08AM 01.891
>
> >      [showsort/1.336104640234288137].: *sys-package-mgr*: The
> > java security manager isn't allowing access to the package cache dir,
> > 'cachedir/packages'
>
> > Which is fine. Now, I've checked my web.xml file, and it seems to be
> > correct, I've checked the Service interface in my GWT code and it is
> > pointing to the correct path to access the servlet, and I've rechecked
> > my code that calls the GWT-RPC servlet, and the servlet (and servlet
> > facade), it all is fine.
>
> > There just doesn't seem to be any connection going on here.
>
> > Now, I *know* that going to a GWT-RPC servlet RemoteServlet doesn't
> > work... but I'm getting 2 different kinds of responses, depending on
> > my servlet.
>
> > If I go to:http://showsort.appspot.com/showsort/display-- in Mozilla
> > Firefox, I get a blank page. I expect this, as it doesn't have a GET
> > or POST interface, and that's fine.
>
> > If I go to:http://showsort.appspot.com/showsort/list-- in Mozilla
> > Firefox, I get a 500 Server Error page. This is strange to me, and
> > unexpected.
>
> > The main fundamental difference between the two is that the list
> > servlet requires datastore functionality, the display servlet only
> > does when called upon to generate a full set of display updates for a
> > selected sorting algorithm... only possible if I get the list of
> > available sorting algorithms from the list servlet, which isn't
> > happening.
>
> > On Sep 4, 10:48 am, Xlorep DarkHelm  w

[appengine-java] JCache best practices

[Erem]

Hey guys,

Would appreciate your help in answering a few specific questions about
using the JCache API on my AppEngine project.

(1) Are any of the following three operations so expensive (like
JDOHelper.getPersistenceManagerFactory()) that I should try to only do
them once in the application and carry around a singleton of their
result from then on?
  (a) CacheManager.getInstance()
  (b) .getCacheFactory()
  (c) .getCache()

(2) Is there a reason I shouldn't have an application-wide singleton
Cache instance that I create on startup? What about CacheFactory? What
about an instance of CacheManager?

(3) Should I forget all this singleton business and call
CacheManager.getInstance().getCache(myCache) every time I need it in a
method? Does that cost me in performance at all?

Thanks for the advice!

Erem
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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Oh, I also have seen these occasionally for the past 2 days, suddenly:

#

   1.
  09-04 10:37AM 58.844 /showsort/list 500 10129ms 0cpu_ms 0kb
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.0
(KHTML, like Gecko) Chrome/3.0.195.6 Safari/532.0,gzip(gfe)
  See details

  207.166.99.104 - - [04/Sep/2009:10:38:08 -0700] "POST /showsort/
list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
099466D0895E48EB4E5CF7AD38C5FA29.cache.html" "Mozilla/5.0 (Windows; U;
Windows NT 5.1; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/
3.0.195.6 Safari/532.0,gzip(gfe)" "showsort.appspot.com"

   2.
  W 09-04 10:38AM 08.974

  Request was aborted after waiting too long to attempt to service
your request. Most likely, this indicates that you have reached your
simultaneous active request limit. This is almost always due to
excessively high latency in your app. Please see
http://code.google.com/appengine/docs/quotas.html for more details.



But they are extremely sporadic when/if they appear. I have 2 (just 2)
servlets which may be called simultaneously. The list one
automatically re-sends to check for an update every 10 minutes, while
the display one is called when someone presses the send button (and
only if there actually is a list of radio buttons to pick from,
retrieved from the list servlet). I think it is peculiar that
something as simple as my little app could have overwhelmed my quota.
Especially as my Quota page completely disagrees and shows I'm well
under my quota in all regards.

My app's latency isn't too high, I've minimized it to where it
generally has about 3 - 4 seconds at most (I think the list might take
6, but I'm planning on working on that). There was a point that the
display servlet was taking incredibly long, but I've made massive
headway on reducing that. So I'm shocked, completely, if my quota
somehow was exceeded, especially as I don't see any evidence of it.
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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

Before we go any further, can you confirm that you've upgraded your
application to the latest 1.2.5 version, including updating all App Engine
libraries (such as appengine-api.jar and the ORM libraries) in your
WEB-INF/lib? This shouldn't be strictly necessary, but it would help narrow
down the problem.

On Fri, Sep 4, 2009 at 2:21 PM, Xlorep DarkHelm  wrote:

>
> Ok, I added in logging directly to the servlet facade I have which
> wraps my Jython servlet to make it work on Google Apps Engine, and I'm
> not even getting that to show up in the logs. Here's what my last
> request produced (when I show requests only):
>
> #
>
>   1.
>  09-04 11:08AM 17.783 /showsort/list 500 42787ms 131cpu_ms
> 131api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
> 1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip(gfe)
>  See details
>
>  207.166.99.104 - - [04/Sep/2009:11:09:00 -0700] "POST /showsort/
> list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
> 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> (gfe)"
>
>
>
> This is from the GWT-RPC request, just before it, everything is
> working perfectly fine for my /showsort/display servlet:
>
> #
>
>   1.
>  09-04 11:08AM 17.781 /showsort/display 200 5576ms 9100cpu_ms 1kb
> Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/
> 20090729 Firefox/3.5.2,gzip(gfe)
>  See details
>
>  207.166.99.104 - - [04/Sep/2009:11:08:23 -0700] "POST /showsort/
> display HTTP/1.1" 200 1346 "http://showsort.appspot.com/showsort/
> 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> (gfe)" "showsort.appspot.com"
>
>   2.
>  D 09-04 11:08AM 20.932
>
>  DisplayServlet start: [ENTER]
>
>   3.
>  D 09-04 11:08AM 21.264
>
>  DisplayServlet start: [LEVEL 1] Client ID =
> e9d1b50f-997d-11de-86aa-bb87edc68d5c
>
>   4.
>  D 09-04 11:08AM 21.811
>
>  DisplayServlet run: [LEVEL 1] Starting step: Initialize.
>
>   5.
>  I 09-04 11:08AM 22.263
>
>  DisplayServlet run: Time to process Initialize: 0.00799989700317
>
>   6.
>  I 09-04 11:08AM 22.617
>
>  DisplayServlet start: Number of updates returned: 102
>
>   7.
>  D 09-04 11:08AM 23.032
>
>  DisplayServlet start: [EXIT]
>
>
> And then I have the requests for the various resources the page
> initially requests, and the original "main" servlet at / shows this:
>
> #
>
>   1.
>  09-04 11:07AM 58.906 / 200 17476ms 29205cpu_ms 0kb Mozilla/5.0
> (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
> 3.5.2,gzip(gfe)
>  See details
>
>  207.166.99.104 - - [04/Sep/2009:11:08:16 -0700] "GET / HTTP/1.1"
> 200 703 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
> Gecko/20090729 Firefox/3.5.2,gzip(gfe)" "showsort.appspot.com"
>
>   2.
>  W 09-04 11:08AM 01.891
>
>  [showsort/1.336104640234288137].: *sys-package-mgr*: The
> java security manager isn't allowing access to the package cache dir,
> 'cachedir/packages'
>
>
>
>
> Which is fine. Now, I've checked my web.xml file, and it seems to be
> correct, I've checked the Service interface in my GWT code and it is
> pointing to the correct path to access the servlet, and I've rechecked
> my code that calls the GWT-RPC servlet, and the servlet (and servlet
> facade), it all is fine.
>
> There just doesn't seem to be any connection going on here.
>
> Now, I *know* that going to a GWT-RPC servlet RemoteServlet doesn't
> work... but I'm getting 2 different kinds of responses, depending on
> my servlet.
>
> If I go to: http://showsort.appspot.com/showsort/display -- in Mozilla
> Firefox, I get a blank page. I expect this, as it doesn't have a GET
> or POST interface, and that's fine.
>
> If I go to: http://showsort.appspot.com/showsort/list -- in Mozilla
> Firefox, I get a 500 Server Error page. This is strange to me, and
> unexpected.
>
> The main fundamental difference between the two is that the list
> servlet requires datastore functionality, the display servlet only
> does when called upon to generate a full set of display updates for a
> selected sorting algorithm... only possible if I get the list of
> available sorting algorithms from the list servlet, which isn't
> happening.
>
>
>
> On Sep 4, 10:48 am, Xlorep DarkHelm  wrote:
> > I can see the requests being made when I look at the logs for when the
> > app runs. So there definitely are requests for /showsort/list being
> > called, by my app. This is an automatic call, which has been working
> > fine up until 2 days ago. Coincidentally about the same time that the
> > updates previously mentioned which had to be rolled back were done.
>
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

There were no changes to App Engine within the last week aside from the
upgrade to 1.2.5 yesterday. The HardDeadlineExceededErrors your app is
receiving is because it's exceeding the 30 second deadline on http requests.
You need to track down what's causing you to exceed that deadline.

On Fri, Sep 4, 2009 at 12:20 PM, Arod  wrote:

>
> My app id is mindhackme.  My app has not run for approx a week now and
> it died without me even updating it. I searched online about possible
> causes and one post I read determined that the persistenceManager bean
> that the Grails GAE plugin used was not a singleton and that was
> creating problems.  So I changed my code to use the persistence the
> way the google docs suggest but still no luck.  Here is a stack trace
> from this morning. The app is a blog that is built on grails. I'm
> using the gae plugin for grails and things were working smoothly until
> recent changes to gae:
>
> #
>
>   1.
>  09-04 09:14AM 39.601 / 500 30005ms 33600cpu_ms 0kb Mozilla/5.0
> (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
> 3.5.2 (.NET CLR 3.5.30729),gzip(gfe)
>  See details
>
>  65.200.50.194 - - [04/Sep/2009:09:15:09 -0700] "GET / HTTP/1.1"
> 500 0 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
> Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729),gzip(gfe)"
> "mindhackme.appspot.com"
>
>   2.
>  W 09-04 09:14AM 46.707
>
>  [mindhackme/6.336061699959790088].: log4j:ERROR Error
> initializing log4j: java.io.FileOutputStream is a restricted class.
> Please see the Google App Engine developer's guide for more details.
>
>
>   3.
>  I 09-04 09:14AM 46.759
>
>  javax.servlet.ServletContext log: Initializing Spring root
> WebApplicationContext
>
>   4.
>  W 09-04 09:15AM 09.129
>
>  [mindhackme/6.336061699959790088].: log4j:WARN No
> appenders could be found for logger (StackTrace).
>
>
>   5.
>  W 09-04 09:15AM 09.129
>
>  [mindhackme/6.336061699959790088].: log4j:WARN Please
> initialize the log4j system properly.
>
>
>   6.
>  W 09-04 09:15AM 09.543
>
>  failed urlMapping
>  com.google.apphosting.runtime.HardDeadlineExceededError: This
> request (e89c1f3832ff258e) started at 2009/09/04 16:14:40.632 UTC and
> was still executing at 2009/09/04 16:15:09.509 UTC.
>at
> org.springframework.beans.PropertyMatches.calculateStringDistance
> (PropertyMatches.java:153)
>at org.springframework.beans.PropertyMatches.calculateMatches
> (PropertyMatches.java:136)
>at org.springframework.beans.PropertyMatches.
> (PropertyMatches.java:81)
>at org.springframework.beans.PropertyMatches.forProperty
> (PropertyMatches.java:63)
>at org.springframework.beans.PropertyMatches.forProperty
> (PropertyMatches.java:53)
>at org.springframework.beans.BeanWrapperImpl.setPropertyValue
> (BeanWrapperImpl.java:800)
>at org.springframework.beans.BeanWrapperImpl.setPropertyValue
> (BeanWrapperImpl.java:651)
>at
> org.springframework.beans.AbstractPropertyAccessor.setPropertyValues
> (AbstractPropertyAccessor.java:78)
>at
> org.springframework.beans.AbstractPropertyAccessor.setPropertyValues
> (AbstractPropertyAccessor.java:63)
>at org.springframework.web.filter.GenericFilterBean.init
> (GenericFilterBean.java:169)
>at
> org.springframework.web.filter.DelegatingFilterProxy.initDelegate
> (DelegatingFilterProxy.java:218)
>at
> org.springframework.web.filter.DelegatingFilterProxy.initFilterBean
> (DelegatingFilterProxy.java:145)
>at org.springframework.web.filter.GenericFilterBean.init
> (GenericFilterBean.java:179)
>at org.mortbay.jetty.servlet.FilterHolder.doStart
> (FilterHolder.java:99)
>at org.mortbay.component.AbstractLifeCycle.start
> (AbstractLifeCycle.java:40)
>at org.mortbay.jetty.servlet.ServletHandler.initialize
> (ServletHandler.java:589)
>at org.mortbay.jetty.servlet.Context.startContext(Context.java:
> 139)
>at org.mortbay.jetty.webapp.WebAppContext.startContext
> (WebAppContext.java:1218)
>at org.mortbay.jetty.handler.ContextHandler.doStart
> (ContextHandler.java:500)
>at org.mortbay.jetty.webapp.WebAppContext.doStart
> (WebAppContext.java:448)
>at org.mortbay.component.AbstractLifeCycle.start
> (AbstractLifeCycle.java:40)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
> (AppVersionHandlerMap.java:190)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
> (AppVersionHandlerMap.java:167)
>at
>
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
> (JettyServletEngineAdapter.java:127)
>at com.google.apphosting.runtime.JavaRuntime.handleRequest
> (JavaRuntime.java:235)
>at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:4950)
>at com.google.apphosting.base.RuntimePb$EvaluationRunt

[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Ok, I added in logging directly to the servlet facade I have which
wraps my Jython servlet to make it work on Google Apps Engine, and I'm
not even getting that to show up in the logs. Here's what my last
request produced (when I show requests only):

#

   1.
  09-04 11:08AM 17.783 /showsort/list 500 42787ms 131cpu_ms
131api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip(gfe)
  See details

  207.166.99.104 - - [04/Sep/2009:11:09:00 -0700] "POST /showsort/
list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
(gfe)"



This is from the GWT-RPC request, just before it, everything is
working perfectly fine for my /showsort/display servlet:

#

   1.
  09-04 11:08AM 17.781 /showsort/display 200 5576ms 9100cpu_ms 1kb
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/
20090729 Firefox/3.5.2,gzip(gfe)
  See details

  207.166.99.104 - - [04/Sep/2009:11:08:23 -0700] "POST /showsort/
display HTTP/1.1" 200 1346 "http://showsort.appspot.com/showsort/
0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
(gfe)" "showsort.appspot.com"

   2.
  D 09-04 11:08AM 20.932

  DisplayServlet start: [ENTER]

   3.
  D 09-04 11:08AM 21.264

  DisplayServlet start: [LEVEL 1] Client ID =
e9d1b50f-997d-11de-86aa-bb87edc68d5c

   4.
  D 09-04 11:08AM 21.811

  DisplayServlet run: [LEVEL 1] Starting step: Initialize.

   5.
  I 09-04 11:08AM 22.263

  DisplayServlet run: Time to process Initialize: 0.00799989700317

   6.
  I 09-04 11:08AM 22.617

  DisplayServlet start: Number of updates returned: 102

   7.
  D 09-04 11:08AM 23.032

  DisplayServlet start: [EXIT]


And then I have the requests for the various resources the page
initially requests, and the original "main" servlet at / shows this:

#

   1.
  09-04 11:07AM 58.906 / 200 17476ms 29205cpu_ms 0kb Mozilla/5.0
(Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
3.5.2,gzip(gfe)
  See details

  207.166.99.104 - - [04/Sep/2009:11:08:16 -0700] "GET / HTTP/1.1"
200 703 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
Gecko/20090729 Firefox/3.5.2,gzip(gfe)" "showsort.appspot.com"

   2.
  W 09-04 11:08AM 01.891

  [showsort/1.336104640234288137].: *sys-package-mgr*: The
java security manager isn't allowing access to the package cache dir,
'cachedir/packages'




Which is fine. Now, I've checked my web.xml file, and it seems to be
correct, I've checked the Service interface in my GWT code and it is
pointing to the correct path to access the servlet, and I've rechecked
my code that calls the GWT-RPC servlet, and the servlet (and servlet
facade), it all is fine.

There just doesn't seem to be any connection going on here.

Now, I *know* that going to a GWT-RPC servlet RemoteServlet doesn't
work... but I'm getting 2 different kinds of responses, depending on
my servlet.

If I go to: http://showsort.appspot.com/showsort/display -- in Mozilla
Firefox, I get a blank page. I expect this, as it doesn't have a GET
or POST interface, and that's fine.

If I go to: http://showsort.appspot.com/showsort/list -- in Mozilla
Firefox, I get a 500 Server Error page. This is strange to me, and
unexpected.

The main fundamental difference between the two is that the list
servlet requires datastore functionality, the display servlet only
does when called upon to generate a full set of display updates for a
selected sorting algorithm... only possible if I get the list of
available sorting algorithms from the list servlet, which isn't
happening.



On Sep 4, 10:48 am, Xlorep DarkHelm  wrote:
> I can see the requests being made when I look at the logs for when the
> app runs. So there definitely are requests for /showsort/list being
> called, by my app. This is an automatic call, which has been working
> fine up until 2 days ago. Coincidentally about the same time that the
> updates previously mentioned which had to be rolled back were done.

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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

It looks like your application is being terminated due to exceeding request
deadlines. If you look in your application logs, you can see warnings such
as:

Request was aborted after waiting too long to attempt to service your
> request. Most likely, this indicates that you have reached your simultaneous
> active request limit. This is almost always due to excessively high latency
> in your app. Please see http://code.google.com/appengine/docs/quotas.htmlfor 
> more details.
>

If you look at the duration of requests to /showsort/list, you can see that
they exceed the 30 second limit on http requests.

On Fri, Sep 4, 2009 at 1:48 PM, Xlorep DarkHelm  wrote:

>
> I can see the requests being made when I look at the logs for when the
> app runs. So there definitely are requests for /showsort/list being
> called, by my app. This is an automatic call, which has been working
> fine up until 2 days ago. Coincidentally about the same time that the
> updates previously mentioned which had to be rolled back were done.
>
> On Sep 4, 10:44 am, Toby Reyelts  wrote:
> > I can't see that any RPCs are ever made from your client application to
> the
> > server. How are you testinghttp://showsort.appspot.com/showsort/list?
> You
> > can't follow that directly from a browser (i.e. put it in your address
> bar),
> > because GWT RPC does not support HTTP GET requests - it will give you
> some
> > error code back like a 400 or a 500.
> >
> > Can you reproduce any of this on the local dev_appserver? If so, then you
> > can use a debugger to track down the problem. If not, then you should add
> > some code to your GWT client to track down why it appears the RPC is not
> > being initiated.
> >
> > On Fri, Sep 4, 2009 at 11:42 AM, Xlorep DarkHelm 
> wrote:
> >
> > > Application ID is showsort.
> >
> > > I can't provide stacktraces for the error, because I'm getting no
> > > stacktraces. It isn't even showing up in the logs as a problem. I'm
> > > seeing a 500 error, where there used to not be a 500 error. I've not
> > > modified the code for my list servlet in several days, but this is now
> > > not working, and hasn't been since yesterday, and it appears to be the
> > > same problem it had a couple days ago during the "short window".
> >
> > > On Sep 4, 8:31 am, Toby Reyelts  wrote:
> > > > Cliff,
> > > > We're not aware of any datastore problems. As Matthew posted two days
> > > ago,
> > > > there was a short window where changes were introduced that may have
> > > caused
> > > > some problems for some applications, so we rolled them back in short
> > > order.
> > > > If after further investigation you still believe these are App Engine
> > > > problems, please provide us with more information such as stacktraces
> and
> > > > your application id. You can always check our status
> > > > siteto see if it appears
> > > > that App Engine is having problems in general.
> >
> > > > On Fri, Sep 4, 2009 at 10:21 AM, Cliff Hill 
> wrote:
> > > > > Still unable to do datastore gets. Well, for about 3 hours
> yesterday,
> > > it
> > > > > worked, and then it stopped. And it is still stopped as of this
> > > morning. Any
> > > > > chance that I'll be able to use my datastore code sometime in the
> near
> > > > > future? My app really kinda relies on the datastore to, well, work.
> >
> > > > > On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980 
> > > wrote:
> >
> > > > >> Datastore GET error rate is still 100%.  Any ETA on when this will
> be
> > > > >> resolved?
> >
> > > > >> Regards,
> > > > >> JS
> >
> > > > >> On Sep 3, 3:41 am, Hani Naguib  wrote:
> > > > >> > I am also getting many error 500 pages.
> > > > >> > This is happening since the issue I mentioned here:
> > > > >>
> http://groups.google.com/group/google-appengine-java/browse_thread/th.
> > > ..
> >
> > > > > --
> > > > > "I'm not responcabel fer my computer's spleling errnors" - Xlorep
> > > DarkHelm
> > > > > Website:http://darkhelm.org
> >
>

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[appengine-java] Re: OpenID Consumer

[Jason (Google)]

I haven't used any myself, but this page has a list of relevant Java
libraries:
http://wiki.openid.net/Libraries

Also, the OpenSocial client library for Java, which is compatible with App
Engine, uses the open source OAuth library available at
http://code.google.com/p/oauth for request signing and validation.

- Jason

On Wed, Sep 2, 2009 at 5:10 PM, anjolight  wrote:

>
> Hi, I'm trying to create an OpenID consumer in my appengine project.
> My intention to use Google for OpenID provider with OpenID+OAuth. If
> someone has an example code to share, I'd greatly appreciate it.
>
> thank you.
> >
>

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[appengine-java] Re: Confirmation of Google Multi-Tenant app policy

[Jason (Google)]

Currently, registering multiple IDs for the same application is a violation
of the App Engine terms of service. However, we do have an exception policy
in place for developers with a multi-tenant strategy, and we handle these on
a case-by-case basis. To begin, please file a new multi-instance exception
request:

http://code.google.com/support/bin/request.py?contact_type=AppEngineMultiInstanceExceptionRequest

- Jason

On Wed, Sep 2, 2009 at 5:33 AM, doc123  wrote:

>
> Hi
>
> Now I am planning to start free project management service  =>
> http://www.chainofasker.com/ by using Google App Engine
>
> When I try to provide this free project management service, problem is
> server fee because once I release this service,  I can not expect how
> many user come to this site and use free service.
>
> So I want to ask user to have their dedicated server if they want use
> stable service. Procedure is following
>
> User create User own account at Google app engine site.
> User nominate me as a administrator or invite me as a developer.
> I install server software.
> User remove me from administrator list.
> User start using my service
>
> Is this meet Google App Engine’s terms of use?
>
> I found related article which is posted by Jason but now I can not
> find it url so I post previous multi-tenant discussion image to here
> => http://www.chainofasker.com/muti-tenant-past-post
>
> I think above procedure is keeping Jason’s recommendation.
>
> >
>

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[appengine-java] Re: xmpp support

[Jason (Google)]

XMPP support was added in the 1.2.5 release announced yesterday:
http://code.google.com/appengine/docs/java/xmpp/

- Jason

On Wed, Sep 2, 2009 at 1:47 AM, asianCoolz  wrote:

>
> May i know when GAE mentioned will support XMPP for next version of
> GAE, does that mean, it will support "all" features of xmpp?  can we
> use "BOSH" to replace comet feature? the reason i asking is because
> i'm very interested to use comet in my application but found out GAE
> doesn't support it. So, I am wondering should i invest my time create
> 'xmpp/bosh' feature on my app and anticipating for next version of
> GAE? what is the estimate date of the next release?
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

I can see the requests being made when I look at the logs for when the
app runs. So there definitely are requests for /showsort/list being
called, by my app. This is an automatic call, which has been working
fine up until 2 days ago. Coincidentally about the same time that the
updates previously mentioned which had to be rolled back were done.

On Sep 4, 10:44 am, Toby Reyelts  wrote:
> I can't see that any RPCs are ever made from your client application to the
> server. How are you testinghttp://showsort.appspot.com/showsort/list? You
> can't follow that directly from a browser (i.e. put it in your address bar),
> because GWT RPC does not support HTTP GET requests - it will give you some
> error code back like a 400 or a 500.
>
> Can you reproduce any of this on the local dev_appserver? If so, then you
> can use a debugger to track down the problem. If not, then you should add
> some code to your GWT client to track down why it appears the RPC is not
> being initiated.
>
> On Fri, Sep 4, 2009 at 11:42 AM, Xlorep DarkHelm  wrote:
>
> > Application ID is showsort.
>
> > I can't provide stacktraces for the error, because I'm getting no
> > stacktraces. It isn't even showing up in the logs as a problem. I'm
> > seeing a 500 error, where there used to not be a 500 error. I've not
> > modified the code for my list servlet in several days, but this is now
> > not working, and hasn't been since yesterday, and it appears to be the
> > same problem it had a couple days ago during the "short window".
>
> > On Sep 4, 8:31 am, Toby Reyelts  wrote:
> > > Cliff,
> > > We're not aware of any datastore problems. As Matthew posted two days
> > ago,
> > > there was a short window where changes were introduced that may have
> > caused
> > > some problems for some applications, so we rolled them back in short
> > order.
> > > If after further investigation you still believe these are App Engine
> > > problems, please provide us with more information such as stacktraces and
> > > your application id. You can always check our status
> > > siteto see if it appears
> > > that App Engine is having problems in general.
>
> > > On Fri, Sep 4, 2009 at 10:21 AM, Cliff Hill  wrote:
> > > > Still unable to do datastore gets. Well, for about 3 hours yesterday,
> > it
> > > > worked, and then it stopped. And it is still stopped as of this
> > morning. Any
> > > > chance that I'll be able to use my datastore code sometime in the near
> > > > future? My app really kinda relies on the datastore to, well, work.
>
> > > > On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980 
> > wrote:
>
> > > >> Datastore GET error rate is still 100%.  Any ETA on when this will be
> > > >> resolved?
>
> > > >> Regards,
> > > >> JS
>
> > > >> On Sep 3, 3:41 am, Hani Naguib  wrote:
> > > >> > I am also getting many error 500 pages.
> > > >> > This is happening since the issue I mentioned here:
> > > >>http://groups.google.com/group/google-appengine-java/browse_thread/th.
> > ..
>
> > > > --
> > > > "I'm not responcabel fer my computer's spleling errnors" - Xlorep
> > DarkHelm
> > > > Website:http://darkhelm.org
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[appengine-java] Re: self join in google app engine

[Jason (Google)]

Hi Midhat. In the thread that leszek links to, I discuss this bug in a
little more detail -- it seems you can't persist objects having an owned
one-to-many relationship with objects of the same kind. Owned one-to-one
relationships seem to work, however. As a workaround, you can use an unowned
relationship (i.e. Set children) or specify a new class for the child
objects.
- Jason

On Wed, Sep 2, 2009 at 1:57 AM, leszek  wrote:

>
> Read this thread - could be helpfull :
>
>
> http://groups.google.co.uk/group/google-appengine-java/browse_frm/thread/3affdf1441f864b6/99a166946ad0ef61?lnk=gst&q=self#99a166946ad0ef61
>
>
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

I just re-uploaded my app, with logging enabled for my servlet again,
so I can see the progress it has when/if it runs. However I'm seeing
that someone has been testing other things as well... I'm also seeing
a 500 Server Error on the main app now.

On Sep 4, 8:42 am, Xlorep DarkHelm  wrote:
> Application ID is showsort.
>
> I can't provide stacktraces for the error, because I'm getting no
> stacktraces. It isn't even showing up in the logs as a problem. I'm
> seeing a 500 error, where there used to not be a 500 error. I've not
> modified the code for my list servlet in several days, but this is now
> not working, and hasn't been since yesterday, and it appears to be the
> same problem it had a couple days ago during the "short window".
>
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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

I can't see that any RPCs are ever made from your client application to the
server. How are you testing http://showsort.appspot.com/showsort/list ? You
can't follow that directly from a browser (i.e. put it in your address bar),
because GWT RPC does not support HTTP GET requests - it will give you some
error code back like a 400 or a 500.

Can you reproduce any of this on the local dev_appserver? If so, then you
can use a debugger to track down the problem. If not, then you should add
some code to your GWT client to track down why it appears the RPC is not
being initiated.

On Fri, Sep 4, 2009 at 11:42 AM, Xlorep DarkHelm  wrote:

>
> Application ID is showsort.
>
> I can't provide stacktraces for the error, because I'm getting no
> stacktraces. It isn't even showing up in the logs as a problem. I'm
> seeing a 500 error, where there used to not be a 500 error. I've not
> modified the code for my list servlet in several days, but this is now
> not working, and hasn't been since yesterday, and it appears to be the
> same problem it had a couple days ago during the "short window".
>
> On Sep 4, 8:31 am, Toby Reyelts  wrote:
> > Cliff,
> > We're not aware of any datastore problems. As Matthew posted two days
> ago,
> > there was a short window where changes were introduced that may have
> caused
> > some problems for some applications, so we rolled them back in short
> order.
> > If after further investigation you still believe these are App Engine
> > problems, please provide us with more information such as stacktraces and
> > your application id. You can always check our status
> > siteto see if it appears
> > that App Engine is having problems in general.
> >
> > On Fri, Sep 4, 2009 at 10:21 AM, Cliff Hill  wrote:
> > > Still unable to do datastore gets. Well, for about 3 hours yesterday,
> it
> > > worked, and then it stopped. And it is still stopped as of this
> morning. Any
> > > chance that I'll be able to use my datastore code sometime in the near
> > > future? My app really kinda relies on the datastore to, well, work.
> >
> > > On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980 
> wrote:
> >
> > >> Datastore GET error rate is still 100%.  Any ETA on when this will be
> > >> resolved?
> >
> > >> Regards,
> > >> JS
> >
> > >> On Sep 3, 3:41 am, Hani Naguib  wrote:
> > >> > I am also getting many error 500 pages.
> > >> > This is happening since the issue I mentioned here:
> > >>http://groups.google.com/group/google-appengine-java/browse_thread/th.
> ..
> >
> > > --
> > > "I'm not responcabel fer my computer's spleling errnors" - Xlorep
> DarkHelm
> > > Website:http://darkhelm.org
> >
>

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[appengine-java] Re: Problem while using Gilead for Hibernate and Gwt

[Jason (Google)]

I'll need to see a snippet of your server-side code that's failing to get a
better understanding of the error's cause. But if you're trying to use
Hibernate/MySQL directly, this could be the issue since Hibernate is not
supported:
http://groups.google.com/group/google-appengine-java/web/will-it-play-in-app-engine

App Engine has its own datastore for persisting objects and provides a JDO
and JPA interface to this datastore:

http://code.google.com/appengine/docs/java/datastore/

- Jason

On Wed, Sep 2, 2009 at 12:08 AM, Rajitha  wrote:

>
> Hi All,
> Im currently working on Sim Applications using Hibernate,Gwt,mysql  in
> eclipse 3.4.im using Gilead for this.
>
> When im running my Application im getting following errors:
>
>
>
> SEVERE: [125187460050] javax.servlet.ServletContext log: Exception
> while dispatching incoming RPC call
> java.lang.NoSuchMethodError:
> net.sf.beanlib.spi.BeanTransformerSpi.initCustomTransformerFactory
> (Lnet/sf/beanlib/spi/CustomBeanTransformerSpi$Factory;)Lnet/sf/beanlib/
> spi/BeanTransformerSpi;
>at
> net.sf.gilead.core.beanlib.merge.MergeBeanPopulator.newBeanPopulator
> (MergeBeanPopulator.java:51)
>at net.sf.gilead.core.LazyKiller.populate(LazyKiller.java:249)
>at net.sf.gilead.core.LazyKiller.attach(LazyKiller.java:216)
>at net.sf.gilead.core.PersistentBeanManager.mergePojo
> (PersistentBeanManager.java:517)
>at net.sf.gilead.core.PersistentBeanManager.merge
> (PersistentBeanManager.java:305)
>at net.sf.gilead.gwt.GileadRPCHelper.parseInputParameters
> (GileadRPCHelper.java:95)
>at net.sf.gilead.gwt.PersistentRemoteService.processCall
> (PersistentRemoteService.java:147)
>at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost
> (RemoteServiceServlet.java:86)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 487)
>at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> (ServletHandler.java:1093)
>at
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
> (TransactionCleanupFilter.java:43)
>at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> (ServletHandler.java:1084)
>at org.mortbay.jetty.servlet.ServletHandler.handle
> (ServletHandler.java:360)
>at org.mortbay.jetty.security.SecurityHandler.handle
> (SecurityHandler.java:216)
>at org.mortbay.jetty.servlet.SessionHandler.handle
> (SessionHandler.java:181)
>at org.mortbay.jetty.handler.ContextHandler.handle
> (ContextHandler.java:712)
>at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 405)
>at
> com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle
> (DevAppEngineWebAppContext.java:54)
>at org.mortbay.jetty.handler.HandlerWrapper.handle
> (HandlerWrapper.java:139)
>at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:306)
>at org.mortbay.jetty.handler.HandlerWrapper.handle
> (HandlerWrapper.java:139)
>at org.mortbay.jetty.Server.handle(Server.java:313)
>at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> 506)
>at org.mortbay.jetty.HttpConnection$RequestHandler.content
> (HttpConnection.java:844)
>at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
>at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
>at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
>at org.mortbay.io.nio.SelectChannelEndPoint.run
> (SelectChannelEndPoint.java:396)
>at org.mortbay.thread.BoundedThreadPool$PoolThread.run
> (BoundedThreadPool.java:442)
>
> com.google.gwt.user.client.rpc.StatusCodeException: The call failed on
> the server; see server log for details
>
>
>
>
>
>
> Anyone can please help me..
>
> Thanks in advance
>
> >
>

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[appengine-java] Re: Inconsistence between how app-engine sorts string encoded-keys and java method String.compareTo()

[Jason (Google)]

Yes, encoded String keys are designed to be opaque. But it is possible to
compare two Key objects directly:
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/Key.html#compareTo%28com.google.appengine.api.datastore.Key%29

- Jason

On Tue, Sep 1, 2009 at 11:38 PM, Corneliu Paul Lupulet <
corneliu.lupu...@gmail.com> wrote:

> I think I may have found the answer. Even though an encoded key is a
> string, I should use KeyFactory.stringToKey(encodedKeyString) to compare two
> key strings.
>
>
>
>
> On Tue, Sep 1, 2009 at 7:18 PM, Cornel  wrote:
>
>> Hello!
>>
>> I ran over this problem. I was retrieving a "DbContact" data set
>> simply ordered by
>> encodedKey ascending, and i got this list:
>>
>> [(key agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYm0gMCxIJRGJDb250YWN0GJxIDA
>> name EUROTRIM)
>> , (key agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYnUgMCxIJRGJDb250YWN0GJ5IDA
>> name ANCA ELECTRIC SYSTEMS)
>> , (key agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYn0gMCxIJRGJDb250YWN0GKBIDA
>> name TWIN TRADING)
>> ...
>>
>> So, apparently
>> "agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYnUgMCxIJRGJDb250YWN0GJ5IDA" <
>> "agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYn0gMCxIJRGJDb250YWN0GKBIDA" (the
>> second and the third entries in the above list)
>>
>> But
>> "agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYnUgMCxIJRGJDb250YWN0GJ5IDA".compareTo
>> ("agljb3NpbnV4NjhyIQsSCkRiQ3VzdG9tZXIYn0gMCxIJRGJDb250YWN0GKBIDA") =
>> 37 > 0, which is opposite!
>>
>> The encodedKey field is defined in the DbContact class as:
>>
>> @PersistenceCapable(identityType = IdentityType.APPLICATION)
>> public class DbContact extends DbEntity {
>>
>>@PrimaryKey
>>@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
>>@Extension(vendorName="datanucleus", key="gae.encoded-pk",
>> value="true")
>>private String encodedKey;
>>
>> @Persistent
>>private DbCustomer customer;
>> ...
>>
>> Also, i have a DbCustomer class which is the parent of a DbContact
>> class, defined as:
>>
>> @PersistenceCapable(identityType = IdentityType.APPLICATION)
>> public class DbCustomer extends DbEntity {
>>
>>@PrimaryKey
>>@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
>>@Extension(vendorName="datanucleus", key="gae.encoded-
>> pk",value="true")
>>private String encodedKey;
>>
>>@Persistent(mappedBy = "customer")
>>@Order(extensions = @Extension(vendorName="datanucleus",
>>key="list-ordering", value="customerProfile desc"))
>>private List contacts;
>> ..
>>
>> So what's with this inconsistence? Have any ideas?
>
>
>
>
> --
> Corneliu Paul Lupulet
>
>
>
>
> >
>

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[appengine-java] Re: child of the same class

[Jason (Google)]

You should be able to use an unowned one-to-many, but you won't be able to
easily change the relationship to owned later.
You can also create a second class of object with the same set of fields as
the parent, but this isn't ideal for large, multi-level (e.g.
parent->child->grandchild->great-grandchild) hierarchies.

- Jason

On Tue, Sep 1, 2009 at 11:04 PM, mar_novice  wrote:

>
> Since it is not yet supported, what is the possible approache in the
> meantime to solve this? Can i use unowned one-to-many relationship?
> And when the one-to-many same class relationship bug is already fixed,
> is there a way to convert the unowned one-to-many to owned?
>
> On Sep 2, 8:29 am, mar_novice  wrote:
> > I filed the bug already, thanks.. hope that this bug will be fix
> > immediately and have an update with the sdk. I really need to
> > implement this..
> >
> > On Aug 29, 2:12 am, "Jason (Google)"  wrote:
> >
> > > My sample was using JDO. In JDO, this does not work, but I haven't
> tested
> > > with JPA yet.
> > > - Jason
> >
> > > On Thu, Aug 27, 2009 at 1:34 PM, Michael Niu 
> wrote:
> >
> > > > You can  implements   self one-to-many relationship  the tricky is
> > > > Dont define ManytoOne, for your  example your  class  will  look
> > > > like :
> > > > class  Mall{
> > > > ...
> > > > id and  other  properties
> >
> > > > @OneToMany
> > > > ListsubMallList;
> >
> > > > ...
> >
> > > > }
> >
> > > > remenber. dont add   parent  object to  the class!
> >
> > > > cheers
> >
> > > > Michael
> >
> > > > On Aug 25, 11:03 pm, mar_novice  wrote:
> > > > > Is it possible to implement a parent-child relationship in the same
> > > > > class..
> > > > > for example
> >
> > > > > parent Location has a child Location...
> >
> > > > > for instance Mall class with fields name, longitude, latitude.
> > > > >  a big mallname X, lat - 1.1  long- 2.3
> > > > >  sub mall  name A, lat - 1.01  long -2.1
> > > > >  sub mall  name B
> > > > >  sub mall
> > > > >  sub mall
> > > > >  submall
> > > > >   sub mall
> >
> >
> >
>

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[appengine-java] Re: Queries in 1.2.5 don't retrieve com.google.appengine.api.datastore.Text data anymore?

[Dominik Steiner]

Hi rick,

thank you very much for the fast answer, this was very helpful.

I didn't change my code, as i could switch locally in eclipse from GA  
1.2.2 to 1.2.5 without doing any code changes and in 1.2.2 it would  
retrieve the properties of type text or blob, in 1.2.5 it wouldn't.

Thanks to your link the solution was then to add

@Persistent(defaultFetchGroup="true")

to the fields with text or blob.

For me this is still a breaking change from 1.2.2 to 1.2.5, I think  
this should be clearly documented.

Thanks again for your post.

Dominik

>
> Did you change your code ?
> Text and Blod are not part of the default fetch group.  Look at
> http://www.datanucleus.org/products/accessplatform/jdo/fetchgroup.html
> >


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[appengine-java] Re: Queries in 1.2.5 don't retrieve com.google.appengine.api.datastore.Text data anymore?

[rick]

Did you change your code ?
Text and Blod are not part of the default fetch group.  Look at
http://www.datanucleus.org/products/accessplatform/jdo/fetchgroup.html
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[appengine-java] Re: GAE down? Response Error 500

[Arod]

My app id is mindhackme.  My app has not run for approx a week now and
it died without me even updating it. I searched online about possible
causes and one post I read determined that the persistenceManager bean
that the Grails GAE plugin used was not a singleton and that was
creating problems.  So I changed my code to use the persistence the
way the google docs suggest but still no luck.  Here is a stack trace
from this morning. The app is a blog that is built on grails. I'm
using the gae plugin for grails and things were working smoothly until
recent changes to gae:

#

   1.
  09-04 09:14AM 39.601 / 500 30005ms 33600cpu_ms 0kb Mozilla/5.0
(Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
3.5.2 (.NET CLR 3.5.30729),gzip(gfe)
  See details

  65.200.50.194 - - [04/Sep/2009:09:15:09 -0700] "GET / HTTP/1.1"
500 0 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729),gzip(gfe)"
"mindhackme.appspot.com"

   2.
  W 09-04 09:14AM 46.707

  [mindhackme/6.336061699959790088].: log4j:ERROR Error
initializing log4j: java.io.FileOutputStream is a restricted class.
Please see the Google App Engine developer's guide for more details.


   3.
  I 09-04 09:14AM 46.759

  javax.servlet.ServletContext log: Initializing Spring root
WebApplicationContext

   4.
  W 09-04 09:15AM 09.129

  [mindhackme/6.336061699959790088].: log4j:WARN No
appenders could be found for logger (StackTrace).


   5.
  W 09-04 09:15AM 09.129

  [mindhackme/6.336061699959790088].: log4j:WARN Please
initialize the log4j system properly.


   6.
  W 09-04 09:15AM 09.543

  failed urlMapping
  com.google.apphosting.runtime.HardDeadlineExceededError: This
request (e89c1f3832ff258e) started at 2009/09/04 16:14:40.632 UTC and
was still executing at 2009/09/04 16:15:09.509 UTC.
at
org.springframework.beans.PropertyMatches.calculateStringDistance
(PropertyMatches.java:153)
at org.springframework.beans.PropertyMatches.calculateMatches
(PropertyMatches.java:136)
at org.springframework.beans.PropertyMatches.
(PropertyMatches.java:81)
at org.springframework.beans.PropertyMatches.forProperty
(PropertyMatches.java:63)
at org.springframework.beans.PropertyMatches.forProperty
(PropertyMatches.java:53)
at org.springframework.beans.BeanWrapperImpl.setPropertyValue
(BeanWrapperImpl.java:800)
at org.springframework.beans.BeanWrapperImpl.setPropertyValue
(BeanWrapperImpl.java:651)
at
org.springframework.beans.AbstractPropertyAccessor.setPropertyValues
(AbstractPropertyAccessor.java:78)
at
org.springframework.beans.AbstractPropertyAccessor.setPropertyValues
(AbstractPropertyAccessor.java:63)
at org.springframework.web.filter.GenericFilterBean.init
(GenericFilterBean.java:169)
at
org.springframework.web.filter.DelegatingFilterProxy.initDelegate
(DelegatingFilterProxy.java:218)
at
org.springframework.web.filter.DelegatingFilterProxy.initFilterBean
(DelegatingFilterProxy.java:145)
at org.springframework.web.filter.GenericFilterBean.init
(GenericFilterBean.java:179)
at org.mortbay.jetty.servlet.FilterHolder.doStart
(FilterHolder.java:99)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at org.mortbay.jetty.servlet.ServletHandler.initialize
(ServletHandler.java:589)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:
139)
at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
at org.mortbay.jetty.webapp.WebAppContext.doStart
(WebAppContext.java:448)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:190)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:167)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:127)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4950)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4948)
at
com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
(BlockingApplicationHandler.java:24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication
(RpcUtil.java:359)
at com.google.net.rpc.impl.Server$2.run(Server.java:823)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:516)
a

[appengine-java] Re: XMPP send Chinese message garbled?

[风笑雪]

Python works fine.[image: chatbot.PNG]

2009/9/4 Michael Davidson 

>
> Hi Terry -
>
> There is a slight problem in the implementation of parseMessage(). It
> currently doesn't pay attention to the encoding of the elements in the
> POST, assuming they are UTF-16. In fact, the POST comes in encoded in
> UTF-8. If you modify the code in parseMessage to assume UTF-8, your
> example should work. This will be fixed in 1.2.6.
>
> Michael
>
> >
>

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[appengine-java] Queries in 1.2.5 don't retrieve com.google.appengine.api.datastore.Text data anymore?

[Dominik Steiner]

Hi,

I have data objects stored in the datastore that have a propery of
type com.google.appengine.api.datastore.Text. In 1.2.2 this was
working without problems and querying the data objects would also
retrieve the property with type
com.google.appengine.api.datastore.Text, but moving to 1.2.5 this
doesn't work anymore and the property of type
com.google.appengine.api.datastore.Text is returning always as null.
This problem also occurs for property of type Blob.

Anybody has a clue if this is a bug or a feature?

Thanks.

Dominik
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[appengine-java] this group is being copied on a blog

[bgood]

I don't know what the owners of the group think about this, but it
seems wrong to me.  All of the messages posted to this list are
appearing on this guys blog unmodified.  See

http://cng1985.blogspot.com/2009/09/appengine-java-re-jasperreports-on-gae_04.html

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[appengine-java] Re: JasperReports on GAE

[bgood]

Sure would be nice if appengine would decide to support awt - it would
solve this problem and many others. (Vote for it here
http://code.google.com/p/googleappengine/issues/detail?id=1423).
However, my impression is that they have no intention to do so any
time soon - it must cause some significant problems for their
infrastructure.

Someone apparently got iText to run in app-engine
http://groups.google.com/group/google-appengine-java/msg/419faf63fff47ef7

and there was an issue posted to itext on sourceforge, but I can't
seem to access the itext project there anymore - perhaps they moved?
https://sourceforge.net/tracker/?func=detail&aid=2810312&group_id=152



On Sep 4, 1:33 am, Grzegorz Borkowski  wrote:
> Do you know if JasperReports developers are aware of this problem? Is
> there any bug reported to them? I haven't found any on myself.
> Logically, JasperReports (nor iText) shouldn't depend on AWT classes,
> so this dependency is a bit strange, and perhaps can be fixed by them.
>
> On Sep 4, 12:16 am, bgood  wrote:
>
>
>
> > We had the same problem but ended up hosting the report generator on a
> > separate server.  If you figure it out, please post here about how to
> > do it!  Its really the only critical piece of our code that we can't
> > move into this particular cloud.  Its the only reason we are
> > considering alternative hosting services right now.
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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Application ID is showsort.

I can't provide stacktraces for the error, because I'm getting no
stacktraces. It isn't even showing up in the logs as a problem. I'm
seeing a 500 error, where there used to not be a 500 error. I've not
modified the code for my list servlet in several days, but this is now
not working, and hasn't been since yesterday, and it appears to be the
same problem it had a couple days ago during the "short window".

On Sep 4, 8:31 am, Toby Reyelts  wrote:
> Cliff,
> We're not aware of any datastore problems. As Matthew posted two days ago,
> there was a short window where changes were introduced that may have caused
> some problems for some applications, so we rolled them back in short order.
> If after further investigation you still believe these are App Engine
> problems, please provide us with more information such as stacktraces and
> your application id. You can always check our status
> siteto see if it appears
> that App Engine is having problems in general.
>
> On Fri, Sep 4, 2009 at 10:21 AM, Cliff Hill  wrote:
> > Still unable to do datastore gets. Well, for about 3 hours yesterday, it
> > worked, and then it stopped. And it is still stopped as of this morning. Any
> > chance that I'll be able to use my datastore code sometime in the near
> > future? My app really kinda relies on the datastore to, well, work.
>
> > On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980  wrote:
>
> >> Datastore GET error rate is still 100%.  Any ETA on when this will be
> >> resolved?
>
> >> Regards,
> >> JS
>
> >> On Sep 3, 3:41 am, Hani Naguib  wrote:
> >> > I am also getting many error 500 pages.
> >> > This is happening since the issue I mentioned here:
> >>http://groups.google.com/group/google-appengine-java/browse_thread/th...
>
> > --
> > "I'm not responcabel fer my computer's spleling errnors" - Xlorep DarkHelm
> > Website:http://darkhelm.org
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[appengine-java] Re: Maven

[Nikolay Gorylenko]

please include 1.2.5 jars to 
http://www.mvnsearch.org/maven2/com/google/appengine/
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[appengine-java] Re: Datastore problems!

[Toby Reyelts]

We're unaware of any datastore problems. One thing you might try is
upgrading to the latest version of the SDK (don't forget to copy all of the
updated datastore libraries into your WEB-INF/lib). If that doesn't work for
you, please post a full stacktrace and your application id.

On Fri, Sep 4, 2009 at 9:09 AM, Andrew  wrote:

>
> Hey,
> Im getting java.lang.ArrayIndexOutOfBoundsException when trying to
> retrieve from the datastore! The status page says that things are
> supposed to be ok now (after the issues), but they arent for me!! Is
> it just a case of taking time before everything is ok or?
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Toby Reyelts]

Cliff,
We're not aware of any datastore problems. As Matthew posted two days ago,
there was a short window where changes were introduced that may have caused
some problems for some applications, so we rolled them back in short order.
If after further investigation you still believe these are App Engine
problems, please provide us with more information such as stacktraces and
your application id. You can always check our status
siteto see if it appears
that App Engine is having problems in general.

On Fri, Sep 4, 2009 at 10:21 AM, Cliff Hill  wrote:

> Still unable to do datastore gets. Well, for about 3 hours yesterday, it
> worked, and then it stopped. And it is still stopped as of this morning. Any
> chance that I'll be able to use my datastore code sometime in the near
> future? My app really kinda relies on the datastore to, well, work.
>
> On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980  wrote:
>
>>
>> Datastore GET error rate is still 100%.  Any ETA on when this will be
>> resolved?
>>
>> Regards,
>> JS
>>
>> On Sep 3, 3:41 am, Hani Naguib  wrote:
>> > I am also getting many error 500 pages.
>> > This is happening since the issue I mentioned here:
>> http://groups.google.com/group/google-appengine-java/browse_thread/th...
>>
>>
>
>
> --
> "I'm not responcabel fer my computer's spleling errnors" - Xlorep DarkHelm
> Website: http://darkhelm.org
>
>
> >
>

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[appengine-java] Re: XMPP send Chinese message garbled?

[Michael Davidson]

Hi Terry -

There is a slight problem in the implementation of parseMessage(). It
currently doesn't pay attention to the encoding of the elements in the
POST, assuming they are UTF-16. In fact, the POST comes in encoded in
UTF-8. If you modify the code in parseMessage to assume UTF-8, your
example should work. This will be fixed in 1.2.6.

Michael

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[appengine-java] Re: GAE down? Response Error 500

[Xlorep DarkHelm]

Well, my primary servlet that loads data from the datastore still
breaks, and spits out a 500 Server Error when I run it manually:

http://showsort.appspot.com/showsort/list

If it works, it shouldn't show anything at all, because it is a GWT-
RPC driven servlet.

http://showsort.appspot.com

There are 2 things which have async calls run. First is a graphic
update which draws a black line (IE still doesn't work for this...
other browsers do though). Second is a list of sorting algorithms,
retrieved from the datastore, which appears above the Start button on
the screen. This never happens, because I'm getting a 500 Server Error
consistently whenever it attempts to be run.

I've re-uploaded my app on the off chance that it was a bad update or
something last time, and no change. It makes my app, well, completely
useless if I can't access the datastore at all...

On Sep 4, 7:25 am, sandlex  wrote:
> I played with my application today and there was no any problems with 
> datastore.

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[appengine-java] Re: problem in updating to 1.2.5 in eclipse

[Vik]

Hie
using for J2EE  Eclipse SDK
Version: 3.4.2
Build id: M20090211-1700

And below is what i see in log file
!ENTRY org.eclipse.equinox.p2.metadata.repository 2 0 2009-09-04
20:45:42.018
!MESSAGE Error parsing metadata repository
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 9, column 99: Missing required attribute in
"repository": url
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 9, column 99: Illegal value for attribute "url" of
element "repository": null
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 10, column 99: Missing required attribute in
"repository": url
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 10, column 99: Illegal value for attribute "url" of
element "repository": null
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 11, column 97: Missing required attribute in
"repository": url
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 11, column 97: Illegal value for attribute "url" of
element "repository": null
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 12, column 97: Missing required attribute in
"repository": url
!SUBENTRY 1 org.eclipse.equinox.p2.core 2 0 2009-09-04 20:45:42.018
!MESSAGE Error at line 12, column 97: Illegal value for attribute "url" of
element "repository": null

!ENTRY org.eclipse.equinox.p2.engine 4 4 2009-09-04 20:48:28.202
!MESSAGE An error occurred while collecting items to be installed
!SUBENTRY 1 org.eclipse.equinox.p2.artifact.repository 4 0 2009-09-04
20:48:28.202
!MESSAGE No repository found containing:
com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
!SUBENTRY 1 org.eclipse.equinox.p2.artifact.repository 4 0 2009-09-04
20:48:28.202
!MESSAGE No repository found containing:
com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031



Thankx and Regards

Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com


2009/9/4 Miguel Méndez 

> What version of eclipse are you using?  What flavor of eclipse are you
> using (Eclipse for Java Developers, Eclipse for J2EE, etc)?  Are there any
> exceptions in the PATH_TO_YOUR_WORKSPACE/.metadata/.log file?
>
>
> On Fri, Sep 4, 2009 at 9:18 AM, Vik  wrote:
>
>> i still see this issue.. in a way for last 10 hours..
>> i have not changed the updated site and i have got previous updates
>> properly in past.
>> Thankx and Regards
>>
>> Vik
>> Founder
>> www.sakshum.com
>> www.sakshum.blogspot.com
>>
>>
>> 2009/9/4 Miguel Méndez 
>>
>>>  Was this a temporary problem?  Are you sure that you are using the right
>>> update site for your version of eclipse?
>>>
>>> On Fri, Sep 4, 2009 at 3:13 AM, Vik  wrote:
>>>
 hie
 getting error

 An error occurred while collecting items to be installed
   No repository found containing:
 com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
   No repository found containing:
 com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031


 While trying to upgrade to 1.2.5 in eclipse.

 Thankx and Regards

 Vik
 Founder
 www.sakshum.com
 www.sakshum.blogspot.com



>>>
>>>
>>> --
>>> Miguel
>>>
>>>
>>>
>>
>>
>>
>
>
> --
> Miguel
>
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[sandlex]

I played with my application today and there was no any problems with datastore.

On Fri, Sep 4, 2009 at 6:21 PM, Cliff Hill wrote:
> Still unable to do datastore gets. Well, for about 3 hours yesterday, it
> worked, and then it stopped. And it is still stopped as of this morning. Any
> chance that I'll be able to use my datastore code sometime in the near
> future? My app really kinda relies on the datastore to, well, work.
>
> On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980  wrote:
>>
>> Datastore GET error rate is still 100%.  Any ETA on when this will be
>> resolved?
>>
>> Regards,
>> JS
>>
>> On Sep 3, 3:41 am, Hani Naguib  wrote:
>> > I am also getting many error 500 pages.
>> > This is happening since the issue I mentioned
>> > here:http://groups.google.com/group/google-appengine-java/browse_thread/th...
>>
>
>
>
> --
> "I'm not responcabel fer my computer's spleling errnors" - Xlorep DarkHelm
> Website: http://darkhelm.org
>
>
> >
>

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[appengine-java] Re: GAE down? Response Error 500

[Cliff Hill]

Still unable to do datastore gets. Well, for about 3 hours yesterday, it
worked, and then it stopped. And it is still stopped as of this morning. Any
chance that I'll be able to use my datastore code sometime in the near
future? My app really kinda relies on the datastore to, well, work.

On Thu, Sep 3, 2009 at 5:34 AM, Traveler1980  wrote:

>
> Datastore GET error rate is still 100%.  Any ETA on when this will be
> resolved?
>
> Regards,
> JS
>
> On Sep 3, 3:41 am, Hani Naguib  wrote:
> > I am also getting many error 500 pages.
> > This is happening since the issue I mentioned here:
> http://groups.google.com/group/google-appengine-java/browse_thread/th...
> >
>


-- 
"I'm not responcabel fer my computer's spleling errnors" - Xlorep DarkHelm
Website: http://darkhelm.org

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[appengine-java] Re: DataNucleus is looking at UI classes

[Joe Toth]

I listed my classes and added the exclude-unlisted-classes and it
worked.

at.hadoken.wizzywig.model.User
true

Also, someone e-mailed me with the same problem and found the
solution.

"HasDragHandle  is the problem. I think that you have to put the
gwt-dnd.jar into the war/WEB-INF/lib directory. I had the incubator
jar in a separate lib directory and run into the same problems as you
did."

It all makes sense now! GWT doesn't need the classes in WEB-INF/lib,
but datanucleus does.

Good detective work!


On Sep 3, 10:28 am, datanucleus  wrote:
> > datanucleus says it can't find the Cow class. The class is in WEB-INF/
> > classes. But it looks like datanucleus' classloader is trying to load
> > it, not sure why
>
> Since your persistence.xml doesn't tell it to restrict to specific
> classes, so it searches through all packages from the root of the
> persistence-unit, and finds it ?
>
> Put the Cow in a field on its own ? :-)
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[appengine-java] Re: problem in updating to 1.2.5 in eclipse

[Miguel Méndez]

What version of eclipse are you using?  What flavor of eclipse are you using
(Eclipse for Java Developers, Eclipse for J2EE, etc)?  Are there any
exceptions in the PATH_TO_YOUR_WORKSPACE/.metadata/.log file?

On Fri, Sep 4, 2009 at 9:18 AM, Vik  wrote:

> i still see this issue.. in a way for last 10 hours..
> i have not changed the updated site and i have got previous updates
> properly in past.
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> 2009/9/4 Miguel Méndez 
>
>> Was this a temporary problem?  Are you sure that you are using the right
>> update site for your version of eclipse?
>>
>> On Fri, Sep 4, 2009 at 3:13 AM, Vik  wrote:
>>
>>> hie
>>> getting error
>>>
>>> An error occurred while collecting items to be installed
>>>   No repository found containing:
>>> com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
>>>   No repository found containing:
>>> com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031
>>>
>>>
>>> While trying to upgrade to 1.2.5 in eclipse.
>>>
>>> Thankx and Regards
>>>
>>> Vik
>>> Founder
>>> www.sakshum.com
>>> www.sakshum.blogspot.com
>>>
>>>
>>>
>>
>>
>> --
>> Miguel
>>
>>
>>
>
> >
>


-- 
Miguel

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[appengine-java] Re: problem in updating to 1.2.5 in eclipse

[Vik]

i still see this issue.. in a way for last 10 hours..
i have not changed the updated site and i have got previous updates properly
in past.
Thankx and Regards

Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com


2009/9/4 Miguel Méndez 

> Was this a temporary problem?  Are you sure that you are using the right
> update site for your version of eclipse?
>
> On Fri, Sep 4, 2009 at 3:13 AM, Vik  wrote:
>
>> hie
>> getting error
>>
>> An error occurred while collecting items to be installed
>>   No repository found containing:
>> com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
>>   No repository found containing:
>> com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031
>>
>>
>> While trying to upgrade to 1.2.5 in eclipse.
>>
>> Thankx and Regards
>>
>> Vik
>> Founder
>> www.sakshum.com
>> www.sakshum.blogspot.com
>>
>>
>>
>
>
> --
> Miguel
>
> >
>

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[appengine-java] Datastore problems!

[Andrew]

Hey,
Im getting java.lang.ArrayIndexOutOfBoundsException when trying to
retrieve from the datastore! The status page says that things are
supposed to be ok now (after the issues), but they arent for me!! Is
it just a case of taking time before everything is ok or?
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[appengine-java] Problem with encoding on production environment

[sandlex]

Hello.


I'm trying to do following:
1. I have a GWT-application with a form uploading text files in utf8
character encoding
2. Uploaded file content I save in the entity Blob field in datastore
3. I have a JavaFX client application getting this file content and
displaying it

Everything works just fine on dev environment but on production I have
problems with encoding - I get question marks on my javafx appet form.

More details.

1. On Form submit we go to

public class Upload extends HttpServlet

which creates a jdo transfer object (dictionaryTO) with byte[] field
where we need to store a content of the file:
dictionaryTO.setFile(inputStreamToBytes(item.openStream()));

where (notice, I'm setting "utf8" there):

   private byte[] inputStreamToBytes(InputStream stream)
   throws IOException, IllegalArgumentException,
IllegalStateException
{

   BufferedReader inputStream = null;
   inputStream = new BufferedReader(new InputStreamReader
(stream,
"utf8"));

   String str;
   ByteArrayOutputStream out = new ByteArrayOutputStream
();
   StringBuffer buffer = new StringBuffer();
   while ((str = inputStream.readLine()) != null) {
   
   buffer.append(str);
   buffer.append("\n");
   }
   out.write(buffer.toString().getBytes());
   out.close();
   return out.toByteArray();
   }

2. After that I need to transfer this object to next servlet
(dictionaryService) which will save this object as an entity in
datastore. Doing it this way:
   PrintWriter out = null;
   response.setCharacterEncoding("utf8");
   response.setContentType("text/plain");
   out = response.getWriter();
   ...
   request.getSession().setAttribute("dictionary",
dictionaryTO);
   response.sendRedirect("dictionaryService");

3. dictionaryService is:
public class DictionaryServiceImpl extends RemoteServiceServlet
implements DictionaryService

which gets a transfer object from session, converts it in jdo entity
object - dictionary. A field with file content is being converted from
byte[] into Blob in this way - new Blob(dictionaryTO).getFile()). And
then the object is saved in a standard way: pm.makePersistent
(dictionary).

4. After that we need to process a request from client javafx
application. All I need is two methods:

import java.net.HttpURLConnection;
import java.net.URL;

   /**
* Common method that performs http request to the servlet in
order to
* retrieve required data
*
* @param urlString servlet name to send request
* @param xml xml-body of request
* @return xml-response from servlet
* @throws java.lang.Exception
*/
   static private String performHttpPostRequest(String urlString,
String xml) throws Exception {
   URL url;
   HttpURLConnection connection;
   String response = "false";
   url = new URL(urlString);
   connection = (HttpURLConnection) url.openConnection();
   connection.setRequestMethod("POST");
   connection.setUseCaches(false);
   connection.setDoOutput(true);
   connection.setDoInput(true);
   connection.setAllowUserInteraction(true);
   connection.setRequestProperty("Content-Type", "application/x-
www-form-urlencoded;charset=utf8");
   //connection.setRequestProperty("Content-Type", "text/
xml;charset=utf8");
   connection.setRequestProperty("Accept-Charset", "utf8");
   connection.getOutputStream().write(xml.getBytes());

   InputStream inpStr;
   inpStr = connection.getInputStream();
   //System.out.println("+++ " + connection.getRequestProperty
("Content-Type"));

   response = convertStreamToString(inpStr);

   inpStr.close();

   return response;
   }

   /**
* Converts input stream received from servlet into string.
*
* @param is input stream
* @return input stream as a string
*/
   static private String convertStreamToString(InputStream is) /
*throws UnsupportedEncodingException*/ {

   BufferedReader reader = new BufferedReader(new
InputStreamReader(is));
   StringBuilder sb = new StringBuilder();
   String line = null;
   try {
   while ((line = reader.readLine()) != null) {
   sb.append(line);
   }
   } catch (IOException e) {
   e.printStackTrace();
   } finally {
   try {
   is.close();
   } catch (IOException e) {
   e.printStackTrace();
   }
   }

   return sb.toString();
   }

5. On the server side this request receives
public class GetDictionary extends HttpServlet

   protected void doPost(HttpServletRequest request

[appengine-java] Re: problem in updating to 1.2.5 in eclipse

[Miguel Méndez]

Was this a temporary problem?  Are you sure that you are using the right
update site for your version of eclipse?
On Fri, Sep 4, 2009 at 3:13 AM, Vik  wrote:

> hie
> getting error
>
> An error occurred while collecting items to be installed
>   No repository found containing:
> com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
>   No repository found containing:
> com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031
>
>
> While trying to upgrade to 1.2.5 in eclipse.
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
> >
>


-- 
Miguel

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[appengine-java] Cache-Controle Expiration on static files

[Patou]

hello,

I test the new sdk, and I see that we now add a expiration attribut in
the include tag in appengine-web.xml to set the expiration cache time.
But it's not seems to work .
My appengine-web.xml :






When I deploy on internet, the header of all css and img file is :
Cache-Control:  max-age=0

Has anybody try to do works it ?
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[appengine-java] Re: How to make a query using low level API using the 'key' property?

[Corneliu Paul Lupulet]

I noticed that i can make a query like this:

DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
Query query = new Query("DbContact");
query.addFilter("__key__", FilterOperator.GREATER_THAN,
KeyFactory.stringToKey(a_key_string));

And it works. It fetches the correct results.

Then i also noticed i can do this (locally on my computer; i haven't tested
this on app-engine yet):

entity.put("__key__", "some value");
ds.put(entity);
Using the datastore viewer i can see the object with this property (__key__)
and the corresponding value i've set.

Then if try a query like this:
q1.addFilter("__key__", FilterOperator.EQUAL, "some value");

it doesnt' fetch any results!

So can someone explain the mechanism of what is happening over here? :)

One last thing i've noticed:
If i try the following line in DataViewer --> Query (using GQL):
SELECT * FROM DbCategory where __key__ > 'a'

I get:

server error(500)
Server Error

A server error has occurred.

And also, are there any other "reserved" properties like "__key__" i should
be aware of, or which are useful for special kinds of queries.?

On Fri, Sep 4, 2009 at 2:17 PM, Cornel  wrote:
>
> Hello,
>
> How can i make a Query using the lowlevel API, similar to this:
> select * from Entity where key >  ?
>
> In JDO i would do something like this:
> select * from Entity where encodedKey > 
>
> where encodedKey is my objects' primary key:
>
>@PrimaryKey
>@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
>@Extension(vendorName="datanucleus", key="gae.encoded-pk",
> value="true")
>private String encodedKey;


--
Corneliu Paul Lupulet

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[appengine-java] How to make a query using low level API using the 'key' property?

[Cornel]

Hello,

How can i make a Query using the lowlevel API, similar to this:
select * from Entity where key >  ?

In JDO i would do something like this:
select * from Entity where encodedKey > 

where encodedKey is my objects' primary key:

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
@Extension(vendorName="datanucleus", key="gae.encoded-pk",
value="true")
private String encodedKey;
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[appengine-java] JDO BUG !?

[Cornel]

Hello!

I have some objects in the database that have a String property called
version.
Some of them have version = '0.2', the others have '0.0'

I have an application written in java.
When i query for an object with version 0.2 with the low level api it
works (it finds 62 obejcts)

DatastoreService ds = 
DatastoreServiceFactory.getDatastoreService
();
Query q1 = new Query("DbRawContact");
q1.addFilter("version", FilterOperator.EQUAL, "0.2");
PreparedQuery pq = ds.prepare(q1);
log.info("remainging: " + pq.countEntities());

When i query with JDO the query doesn't fetch anything!

I won't post the JDO query here, because i actually use a wrapper
around it (too many lines to post here); but i'm 99.99% sure that code
is correct because it works for a version = '0.0' query with no
problems! (and for all other queries that i'm doing with it)

I even tried to fetch one of those "version 0.2" objects using a
different property; was succesful, so then i tried a consecutive query
with "version = fetchedObject.getVersion()". No results! What gives? :(
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[appengine-java] Re: JDO queries on owned/unowned one-to-many relationships

[leszek]

 query.setFilter("key > keyParam and key < keyParam1");
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[appengine-java] Re: JDO queries on owned/unowned one-to-many relationships

[leszek]

You can run queries on keys:

http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html#Queries_on_Keys

The first part of child key (ContactInfo.class) contains parent
(Employee) key.

 Employee e;
 

 query = pm.newQuery(ContactInfo.class);
 query.setFilter("key == keyParam");
 query.declareParameters("com.google.appengine.api.datastore.Key
keyParam");
 Key key = KeyFactory.createKey(Employee.class.getSimpleName(),e.getId
());
 list = (List) query.execute(key);

But it returns empty list because the second part of child key
contains child key itself, so it is never equal.

Maybe something like that will work (assuming that your goal is to
find all child belonging to single parent).

 query = pm.newQuery(ContactInfo.class);
 query.setFilter("key > keyParam and key < keyParam1");
 query.declareParameters("com.google.appengine.api.datastore.Key
keyParam");
 query.declareParameters("com.google.appengine.api.datastore.Key
keyParam1");
 Key key = KeyFactory.createKey(Employee.class.getSimpleName(),e.getId
());
 Key key1 = KeyFactory.createKey(Employee.class.getSimpleName(),e.getId
() + 1);
 list = (List) query.execute(key,key1);


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[appengine-java] XMPP send Chinese message garbled?

[Terry]

I have just tried xmpp service.
I followed the example, i tried to send Chinese to Google Talk client,
but the 'body' part garbled.
me: 你好
terryapps: 你刚才发送给我的是(You just sent):��

I expected to see:
你刚才发送给我的是(You just sent):你好

Here is my code, did i miss something or is it a bug?  Thanks!

@Override
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws IOException {
XMPPService xmpp = XMPPServiceFactory.getXMPPService();
Message message = xmpp.parseMessage(req);

JID jid = message.getFromJid();
String body = message.getBody();

String msgBody = "你刚才发送给我的是(You just sent):" + body;
Message msg = new 
MessageBuilder().withRecipientJids(jid).withBody(
msgBody).build();

@SuppressWarnings("unused")
boolean messageSent = false;
if (xmpp.getPresence(jid).isAvailable()) {
SendResponse status = xmpp.sendMessage(msg);
messageSent = (status.getStatusMap().get(jid) ==
SendResponse.Status.SUCCESS);
}
}

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[appengine-java] Re: JasperReports on GAE

[Grzegorz Borkowski]

Do you know if JasperReports developers are aware of this problem? Is
there any bug reported to them? I haven't found any on myself.
Logically, JasperReports (nor iText) shouldn't depend on AWT classes,
so this dependency is a bit strange, and perhaps can be fixed by them.

On Sep 4, 12:16 am, bgood  wrote:
> We had the same problem but ended up hosting the report generator on a
> separate server.  If you figure it out, please post here about how to
> do it!  Its really the only critical piece of our code that we can't
> move into this particular cloud.  Its the only reason we are
> considering alternative hosting services right now.
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[appengine-java] how to handle multipart data in struts 2 ?

[sree]

I am unable to get the multipart data (file etc.) from jsp/request
(post).

appengine sdk has been updated to 1.2.5.

whereas the same can be achieved through servlets as described in "How
do I handle multipart form data? or How do I handle file uploads to my
app?" in faq section.
http://code.google.com/appengine/kb/java.html#fileforms

how to achieve the above said through struts 2 action ?

when I try to get the file through the struts 2 action
the following exception is thrown :

java.security.AccessControlException: access denied
(java.io.FilePermission C:\DOCUME~1\SRK~1.001\LOCALS~1\Temp
\Jetty_127_0_0_1_8180_war-aref0x
\upload_7ecc51fe_12383ed82aa__8000_.tmp write)
at java.security.AccessControlContext.checkPermission
(AccessControlContext.java:323)
at java.security.AccessController.checkPermission
(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:
532)
at com.google.appengine.tools.development.DevAppServerFactory
$CustomSecurityManager.checkPermission(DevAppServerFactory.java:139)
at java.lang.SecurityManager.checkWrite(SecurityManager.java:962)
at java.io.FileOutputStream.(FileOutputStream.java:169)
at java.io.FileOutputStream.(FileOutputStream.java:131)
at
org.apache.commons.io.output.DeferredFileOutputStream.thresholdReached
(DeferredFileOutputStream.java:123)
at
org.apache.commons.io.output.ThresholdingOutputStream.checkThreshold
(ThresholdingOutputStream.java:220)
at org.apache.commons.io.output.ThresholdingOutputStream.write
(ThresholdingOutputStream.java:127)
at org.apache.commons.fileupload.util.Streams.copy(Streams.java:101)
at org.apache.commons.fileupload.util.Streams.copy(Streams.java:64)
at org.apache.commons.fileupload.FileUploadBase.parseRequest
(FileUploadBase.java:362)
at
org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest.parse
(JakartaMultiPartRequest.java:90)
at org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper.
(MultiPartRequestWrapper.java:73)
at org.apache.struts2.dispatcher.Dispatcher.wrapRequest
(Dispatcher.java:698)
at
org.apache.struts2.dispatcher.FilterDispatcher.prepareDispatcherAndWrapRequest
(FilterDispatcher.java:330)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter
(FilterDispatcher.java:390)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at com.google.appengine.tools.development.StaticFileFilter.doFilter
(StaticFileFilter.java:121)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle
(DevAppEngineWebAppContext.java:54)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at com.google.appengine.tools.development.JettyContainerService
$ApiProxyHandler.handle(JettyContainerService.java:313)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$RequestHandler.content
(HttpConnection.java:844)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.java:396)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run
(BoundedThreadPool.java:442)

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[appengine-java] problem in updating to 1.2.5 in eclipse

[Vik]

hie
getting error

An error occurred while collecting items to be installed
  No repository found containing:
com.google.appengine.eclipse.sdkbundle/osgi.bundle/1.2.5.v200909021031
  No repository found containing:
com.google.appengine.eclipse.sdkbundle.e34.feature/org.eclipse.update.feature/1.2.5.v200909021031


While trying to upgrade to 1.2.5 in eclipse.

Thankx and Regards

Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com

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