| A helper class for providing rollback and commit functionality on an OutputData.
If something has been written to the OutputData, commit() will flush
it, forcing any buffered output to be written out. rollback() will
discard the contents of the buffer.
author: "Toomas Römer" author: Jevgeni Kabanov (ekabanov at araneaframework dot org) author: TODO: rewrite as HttpOutputData wrapper |