Solving File Upload Cancel Issue
By Frank Nimphius-Oracle 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.