This Exception may be thrown by Commands when/if errors occur during the processing of the 'execute' method. Generally, this exception should only ever be thrown if the Command has trouble turning the message body of the JMS Message passed to the execute method into an XML Document (org.jdom.Document). Any other error encountered by the command should be handled accordingly by either publishing a Sync-Error-Sync message or returning a Reply document with errors indicating the nature of the problem.
@author Tod Jackson (tod@openeai.org)
@author Steve Wheat (steve@openeai.org)
@version 3.0 - 28 January 2003