[MarkLogic Dev General] Avoiding conflicting document-insert()

[Keith Breinholt]

I'm trying to do a number of updates in successive order and then write information to a history file.
 
My problem is that when I write the history I don't know if the history file has already been created.
 
Here is the code path:
 
  if(xdmp:estimate(fn:doc($history-uri))) then
      xdmp:node-insert-child(fn:doc($history-uri)/cms:events,$event)
  else
      xdmp:document-insert( $history-uri,
                                        <cms:events>{$event}</cms:events>,
                                        (xdmp:permission("cms","read"),xdmp:permission("cms","update")),
                                        "http://ldschurch.org/cms/history"
                                       )    

The problem is that I am getting conflicting document-inserts().  Apparently xdmp:estimate(fn:doc()) isn't absolute at determining if a document exists or not.
 
Is there an absolute way to know if a document exists so that I don't try to create it again?
 
Thanks,
 
Keith L. Breinholt
ICS - Platform Team
"Do what you can, with what you have, where you are." -Theodore Roosevelt

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