[appengine-java] calling blobstore from inside the webapp
Hello,
I would like to modify the content of the BlobStore from inside my
webapp. I mean, the user uploads a picture into blobstore, after in
the background the app should create thumbnails, and stores that
thumbnails too in the BlobStore.
I figured out, that from my 'servlet', I can call
BlobstoreServiceFactory.getBlobstoreService().createUploadUrl("/
internal/uploadBlob/"+id);
and to the acquired URL I can post the content - with proper multi-
part encoding. It works in the development mode, however in the live
system, it always fails with a generic server error message. I'm sure
that my code doesn't gets called - nothing refers to /internal/
uploadBlob/ in the request log. From the response headers, it seems
that the upload server responding :
{server=[Upload Server Built on Nov 11 2010 15:36:58 (1289518618)],
date=[Sun, 28 Nov 2010 12:54:40 GMT], pragma=[no-cache], expires=[Fri,
01 Jan 1990 00:00:00 GMT], cache-control=[no-cache, no-store, must-
revalidate], content-length=[456], content-type=[text/html], x-google-
cache-control=[remote-fetch], via=[HTTP/1.1 GWA]}
Is there anybody, how noticed similar behaviour? Or better, know how
to do it correctly ?
BR,
Zsombor
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[appengine-java] countEntities problem
Hi,
I'm using the low level API, and noticed something strange:
If I call :
service.prepare(
new Query(USER_KIND).addFilter("active", FilterOperator.EQUAL,
Boolean.TRUE)
.addFilter("registrationDate",
FilterOperator.GREATER_THAN_OR_EQUAL, date).setKeysOnly())
.countEntities(FetchOptions.Builder.withDefaults())
it returns 0.
However If I call:
service.prepare(
new Query(USER_KIND).addFilter("active", FilterOperator.EQUAL,
Boolean.TRUE)
.addFilter("registrationDate",
FilterOperator.GREATER_THAN_OR_EQUAL, date).setKeysOnly())
.asList(FetchOptions.Builder.withDefaults()).size()
it returns 3 - in this case this is the correct answer. I'm very
curious what happens here. Is there a problem with the indexes? But if
I not correctly configured my indexes, I guess, the second query
should fail similarly with returning 0 entity.
Any thought ? Is it a bug in the datastore ?
BR
Zsombor
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[appengine-java] Re: countEntities problem
Sorry, after I've upgraded to 1.4.0 this problem is solved. BR, Zsombor On dec. 20, 02:24, Gal Dolber wrote: > Try adding a limit to the count query > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
