[xquery-talk] XML prologue
fcohen at rainingdata.com
Mon Jul 25 16:54:49 PDT 2005
Both make sense to me. Thank you Michael. I'm wondering if there is a
built-in function that would strip the xml prologue from a String so
I could use something like this:
let $b := '<?xml version="1.0"?><name>frank</name>'
On Jul 25, 2005, at 3:14 PM, Michael Dyck wrote:
> Frank Cohen wrote:
>> let $b :=<?xml version="1.0"?><frank/>
>> $b fails with a lexxing error.
>> I read the XQuery 4/2005 spec and don't see that this is not allowed
>> but the 3 different XQuery processors I ran this on all have a
>> problem with it.
> There are a couple of things that they might be complaining about.
> To the XQuery grammar, <?xml version="1.0"?> looks like a
> DirPIConstructor (direct processing-instruction constructor); however,
> 'xml' is not allowed as a PITarget.
> If the parser is being lax about PITargets, or is delaying that
> check to
> a later phase, then it's probably complaining that you have a
> (top-level) DirPIConstructor followed by a DirElemConstructor,
> which is
> a syntax error. (ExprSingle derives PrimaryExpr derives
> Constructor, not
> Constructor+.) It's syntactically on par with
> let $b := 1 2
> let $b := "hello" "world"
> -Michael Dyck
> talk at xquery.com
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