It will help if somebody from GAE team could shed some light on this and comment on Stephen’s response/questions.
On Nov 29, 6:13 pm, Stephen Johnson <[email protected]> wrote: > I believe the 30 second limit is imposed on the time it takes for your > servlet to finish. Thus, if your servlet finished generating and returning > the file to the AppEngine infrastructure in 29 seconds, then I think you > will be safe even though it might take another minute or two for Google's > infrastructure to stream it to the client. I have not tested this though. > Can anyone confirm or deny this assumption on my part. > > On Mon, Nov 29, 2010 at 10:57 AM, pac <[email protected]> wrote: > > Sorry, did not see your post earlier Stephen. > > > I was not aware of this 10 minute feature to create a file, I will > > look into. > > > File size will be greater then 10MB, it is an existing website which I > > am thinking to port to gae, file size already gets around 12MB or so. > > > So I guess more than 10MB download will be an issue and I guess > > download should also complete in 30 second, is that so? > > > On Nov 29, 5:37 pm, pac <[email protected]> wrote: > > > A client will download a xml file instead of uploading. > > > Records will be created (or updated, deleted) in a table/kind over > > > time and all records from a kind need to be downloaded in form of a > > > xml file, I hope I am explaining the issue bit more clearly. > > > > I am not sure if I could make use of blobstore in this case as it will > > > require update of blobstore object (in background may be using task) > > > every time a record gets added/updated/deleted i.e. if I create xml > > > file programmaticaly and store as blobstore object. > > > > On Nov 29, 5:14 pm, Didier Durand <[email protected]> wrote: > > > > > Hi, > > > > > To emulate files, you have to use the Blob object in the datastore to > > > > store such xml content: see com.google.appengine.api.datastore.Blob > > inhttp://code.google.com/appengine/docs/java/datastore/dataclasses.html... > > > > > Blob has a limited max size: 1 Mbyte. So, you can use a collection > > > > (Vector, List, etc..) of Blobs if you need more than 1 Mbytes. > > > > > If your files get uploaded by a client, you can use the Blobstore > > > > where the max size is much bigger(2 Gbytes): seehttp:// > > code.google.com/appengine/docs/java/blobstore/overview.html > > > > > You have to associate the blob with some other fields (name, size, > > > > last_updated) in you pojo to reproduce what you expect from a file. > > > > > N.B. if you need to emulate a directory tree, you also have to write > > > > it by yourself. > > > > > Finally, I would recommend alternative Objectify rather than standard > > > > JDO for such services. > > > > > Hope this helps > > > > > regards > > > > didier > > > > > On Nov 29, 5:53 pm, pac <[email protected]> wrote: > > > > > > In a website I need to provide a feature to get data in xml format > > > > > i.e. some url > > > > > > e.g.http://www.mysite.com../data.xml > > > > > > I think in gae I can not create a file. Any suggestions to create > > such > > > > > feature to get data from data store in this way? > > > > > > Data store will have large number of records, so in general, a file > > > > > created from that could be of good few MBs. > > > -- > > 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 > > [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-appengine-java%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine-java?hl=en. -- 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
