Precompiled xquery functions

Question

I'm trying to find the way to prepare and reuse queries thought the life of application.
I have a bunch of functions that call each other; all of them accept one string parameter and will be called frequently.
What I'm doing is:
1. Prepare following query for each function call (declarations of all and call of one of them):
declare function pg:fun1 ( $t as xs:string )
return "some_node"
declare function pg:fun2 ( $t as xs:string )
return ns:fun1 ( $local_var )
declare variable $p as xs:string external;
return ns:fun1 ( $p )
2. Call function this way:
self.__qe [ function ].setVariableValue ( "p", XmlValue ( XmlValue.STRING, str ( arg ) ) )
return self.__qe [ function ].execute ( self.__dc.qc )
If it would work that would serve my needs, but preparing (step 1) falls with error:
_dbxml.XmlQueryParserError: (6, "Error: Unrecognized character 'p' (0x70) [err:XPST0003], <query>:26:9")
that error on actual function call "return ns:fun1 ( $p )", so it's not sufficient to just declare external variable before query preparation
Maybe I'm taking completely wrong approach, but I couldn't find any tips on how to do that proper way. If somebody can tell me how to prepare bunch of functions and than just call them passing different parameter values, I would be much appreciated.

Answer 1

Hi Philippe,
You would be doing things in a correct manner if you were using XQuery syntax in your query. After unmangling what I think you mean from what you posted, you might want to try something like this:
declare function local:fun1 ( $t as xs:string )
"some_node"
declare function local:fun2 ( $t as xs:string )
local:fun1 ( $t )
declare variable $p as xs:string external;
local:fun1 ( $p )John