[XQZone General] xdmp:document-delete question

[Andy Townsend]

Charles,

I'm not sure precisely what your code does without examples but it sounds 
like you have a single XQuery expression to delete and reload a document. 
If that is so then the delete and the reload will be in the same 
transaction and the XQuery standard requires that the view of the database 
remains consistent throughout a given query - which results in your check 
after a delete thinking that the document is still in the database 
(because it sees the database in the state it was in before the delete).

You will need to be sure to execute the two parts as separate transactions 
by some mechanism, for instance by making use of xdmp:eval().

Andy





Charles Blair <chas at uchicago.edu> 
Sent by: general-bounces at xqzone.marklogic.com
20/07/2006 19:41
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[XQZone General] xdmp:document-delete question






i've written a simple routine to delete a document from a database,
then reload it. the two functions, to delete and load, are executed in
sequence. how long does it take to remove all traces of a deleted
document from a database? i ask because, before reloading a document,
i check to make sure that no other document in the database has the
same value for a particular element; if an identical value is
detected, i don't reload. yet i find that if i immediately reload a
deleted document, marklogic tells me it finds a duplicate value. if i
wait, say 10 seconds, it won't find the value and i can reload. if i
do need to delay before deleting a document and then reloading it, can
someone point me to the equivalent of a sleep function? i've tried to
write one in xquery but i'm finding it to be a bit of a problem to do
correctly (for example, i don't see a function to give me seconds
since the epoch, or the equivalent). thanks.





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