[xquery-talk] nested if, then, for statements

[Michael Kay]

> 
>   I'm trying to do something like the statement below, but I'm getting
>   errors. Do I have the syntax wrong, or do I need to go about it
>   completely differently?
> 

You have the syntax very wrong!

Firstly, cut out the parentheses after "for".

Then add parens around the condition in an "if". 

(Then get yourself a copy of the spec...)

Also, you're trying to use variables as you would in a language that does
textual substitution. This is a common mistake, I think it's because the "$"
signs make them look like shell variables. Use a variable where you would
use a value: collection($coll) rather than collection('{$coll}').

Michael Kay

>   
> ======================================
> 
>    $query := if ($ttl != "")
>       then (
>          for ($entries in collection('{$collctn}')//TEI.2[. 
> &= '*{$kwds}*' and descendant::head &= '*{$ttl}*'])
>             (if $entries/@id = "ppp.00271"
>              (
>                 then ...
>              )
>              else if $entries/@id = "ppp.00237"
>               (
>                 then ...
>               )
>               else if $entries/@id = "ppp.00473"
>                (
>                  then ...
>                )
>                else
>                 (
>                    ...
>                 )
>               )
>               else if (...)
>                 then ...
>               else
>                 ... ,
> 
> 
> ----- 
> - Cindy  
> 
> Cynthia M. Girard
> IATH, University of Virginia
> clm6u at virginia.edu
> 
> "Danger? I laugh in the face of danger!
> ...and then I hide until it goes away."
> 
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