Am 11.12.2013 um 07:04 schrieb easy <lin_xd@126.com>:

hi,all, 
hi 此致,
I have write a restxq service, as following:
-------------------------------
module namespace page = 'http://basex.orgs/examples/web-page';
declare
  %output:method("xhtml")
  %output:omit-xml-declaration("no")
  %output:doctype-public("-//W3C//DTD XHTML 1.0 Transitional//EN")
  %output:doctype-system("http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd")
  %updating
  %rest:path("/addehr")
  %rest:POST('{$ehr}')
  %rest:GET 
  %rest:form-param("message","{$message}", "(no message)")
  %rest:header-param("User-Agent", "{$agent}")
  function  page:hello-postman(
    $ehr,
    $message as xs:string,
    $agent   as xs:string*)
 {
 let $path:=substring('5102108843434',1,3)||'/'||'test'
 let $test := 'ehr/v1/1382968159350/12001.xml'
return 
$x is declared here
for $x in  doc($test)//header[id=12001]
return
 db:output('ok,path='||$path)
here ends the statement: db:output(…) is what you return, where $x is in scope
, insert node (  'text', <e>test</e> ) into $x
here $x is out of scope, because the comma separates the statements and this is simply an other statement. 
You can use parenthesis to put both statements in one sequence:

 ( db:output('ok,path='||$path)
   ,insert node (  'text', <e>test</e> ) into $x
 )
You will then return a sequence with two items instead of returning „db:output(…)“ x-times and afterwards perform „insert node (…) into $x“ one time (where $x is out of scope)

This might clarify things further: 
for $i in 1 to 10 return $i,“I am the second statement and will executed only once, not ten times"


};
 
--
but still say :undefined variavle $x. 
how to do ? is there a good way to do insert update operation on a file and return some customzied response?

Yes: 
   insert node (  'text', <e>test</e> ) into $x
   ,db:output('ok,path='||$path)

If $path should be out of scope, the same solution as mentioned above applies.

many Thanks.

hope this helped, 
 Sebastian

此致

   easy

莫愁前路无知己，天下谁人不识君。


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