I need to be able to determine if an arbitrary node is or is not a database
node.
I implemented this function:
declare function util:isDatabaseNode($node as node()) as xs:boolean {
let $isDbNode as xs:boolean :=
try {
let $nodeId as xs:integer? := db:node-id($node)
(: let $msg := prof:dump(``[[DEBUG] relpath:isDatabaseNode(): nodeId:
"`{$nodeId}`"]``) :)
return exists($nodeId)
} catch * {
(: let $msg := prof:dump(``[[DEBUG] relpath:isDatabaseNode(): Got
exception `{$err:code}` - `{$err:description}`]``) :)
(: return :) false()
}
let $msg := prof:dump(``[[DEBUG] relpath:isDatabaseNode(): Returning
`{$isDbNode}``]``)
return $isDbNode
};
With the prof:dump() calls commented out as shown here, it always returns true,
even when it returned false.
If I comment in the prof:dumps then I get the expected correct false result.
This must be the result some optimization at compile time but I haven’t been
able to find a construction of this function that works without the debug
messages.
Is there a better way to determine if a node is a database node?
This is with 10.6.
Cheers,
E.
_____________________________________________
Eliot Kimber
Sr Staff Content Engineer
O: 512 554 9368
M: 512 554 9368
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