Solving File Upload Cancel Issue
By Frank Nimphius on May 30, 2012
In Oracle JDeveloper 11g R1 (I did not test 11g R2) the file upload component is submitted even if users click a cancel button with immediate="true" set. Usually, immediate="true" on a command button by-passes all modle updates, which would make you think that the file upload isn't processed either. However, using a form like shown below, pressing the cancel button has no effect in that the file upload is not suppressed.Update Aug 29/2012: Appears that all the af:subform suggestions in the original blog entry did not work out for any who tried it. The form still appears to be submitted as a whole. To effectively cancel an upload form, use the af:goButton or af:goLink as the cancel button or lnk, which does not submit the form at all.