Re: [MonetDB-users] Cannot delete added document in XQuery function

8 Mar 2007

      Hi Arthur,
with PUT, your node is serialized to disk, in the file "<dbfarm>/<db>/tmp/test.xml"
it is not shredded at all, you can see this by using xmldb_print() in a
Msever console.  So the problem seems to be caused by that _del_doc does
not recognize a document that is stored on disk but not shredded...
Jennie
On Wed, Mar 07, 2007 at 09:18:31PM +0100, Arthur van Bunningen wrote:
...
Dear All,
To  be able to create a soap-interface with support for the dynamic 
management of xml documents I created a XQuery module with some simple 
document management functions, which I stole from 
"pathfinder/runtime/xrpc/admin/admin.xq" (the code is found at the end 
of this mail).
To test the functions without soap, I created tree simple xqueries. Now 
adding and displaying documents works perfectly. However, when I want to 
delete a document I get: "ERROR = !ERROR: _del_doc(tmp/test.xml): 
document not found in database (1 such errors)! !ERROR: 
interpret_params: shred_doc_base(param 1): evaluation error.".
Maybe this is because the document is not shredded in an ordinary way, 
however I do not know of any other function that can insert documents 
without a physical location.
If someone could help me to delete these documents, or point me to 
another way of inserting documents without a physical location (, or 
show me the stupid mistake I made :) ), this would be very much appreciated.
Best regards,
Arthur
The module looks as follows:
module namespace cq = "http://db.cs.utwente.nl/cq#";
declare updating function cq:PUT($uri as xs:string, $doc as element())
{
  if (substring($uri, 1,4) = 'tmp/')
  then put($doc, $uri)
  else error('PUT: only relative URIs starting with tmp/ allowed')
};
declare function cq:GET($uri as xs:string)
{ doc($uri) };
declare document management function cq:DELETE($uri as xs:string)
{
  if (substring($uri, 1,4) = 'tmp/')
  then pf:del-doc($uri)
  else error('DELETE: only relative URIs starting with tmp/ allowed')
};
==========================
The three test files look as follows:
==========================
import module namespace cq = "http://db.cs.utwente.nl/cq#" at 
"/home/db/bunninge/phd/implementation/xquery/try3_module/ca_module.xq";
cq:PUT("tmp/test.xml",<bla/>)
==========================
import module namespace cq = "http://db.cs.utwente.nl/cq#" at 
"/home/db/bunninge/phd/implementation/xquery/try3_module/ca_module.xq";
cq:GET("tmp/test.xml")
==========================
import module namespace cq = "http://db.cs.utwente.nl/cq#" at 
"/home/db/bunninge/phd/implementation/xquery/try3_module/ca_module.xq";
 cq:DELETE("tmp/test.xml")

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Re: [MonetDB-users] Cannot delete added document in XQuery function

Ying Zhang

The module looks as follows: