Dear Dr. Sun,

I have a Revision class which extends AbstractMessage and a revision controller which extends Abstract message controller. I have a composite id for revision. The composite ids are Page class id and revision number. I have used processMessage( revcommand, user, request ) to upload a file where revcommand is the revision class object. My problem is the attached files are stored in the disk and even the files table is populated with the attached file information. But the file id is not stored in my revision table so that I can reference it. Does anyone have any suggestions? 

I am stuck in this for a whole day. Any suggestions will be greatly appreciated. Thanks

It sounds like the file set in Revision was not saved. Make sure it's mapped in the mapping file.