Hi,

Maybe I've misunderstood docs, but I thought it was possible an
external application to integrate with App Engine by creating a file
in Blobstore. Am I doing something wrong?? Any way to accomplish
this??

http://code.google.com/appengine/docs/java/blobstore/overview.html#Writing_Files_to_the_Blobstore

Thanks.

Code:

public class RemoteAPI {

    public static void main(String[] args) throws IOException {

        String username = "x...@gmail.com";
        String password = "xxxxx";


        RemoteApiOptions options = new RemoteApiOptions()
                .server("primepartes.appspot.com", 443)
            .credentials(username, password);
        RemoteApiInstaller installer = new RemoteApiInstaller();
        installer.install(options);

        FileService fileService = FileServiceFactory.getFileService();
        BlobstoreService blobstoreService =
BlobstoreServiceFactory.getBlobstoreService();

        AppEngineFile file = fileService.createNewBlobFile("text/
plain");

        FileWriteChannel writeChannel =
fileService.openWriteChannel(file, true);

        PrintWriter out = new
PrintWriter(Channels.newWriter(writeChannel, "UTF8"));
        out.println("The woods are lovely dark and deep.");
        out.println("But I have promises to keep.");

        out.close();
        writeChannel.closeFinally(); // This line throwns the excepion
bellow

..............

java.lang.IllegalStateException: The current request does not hold the
exclusive lock.
        at
com.google.appengine.api.files.FileServiceImpl.close(FileServiceImpl.java:
315)
        at
com.google.appengine.api.files.FileWriteChannelImpl.closeFinally(FileWriteChannelImpl.java:
78)
        at br.com.teste.RemoteAPI.main(RemoteAPI.java:82)

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