CODEWITHSUNDEEP
xquery
Ranch Dubois
Ranch Dubois

Reputation: 55

If statement that assigns a variable a string value

I am new to XQuery and struggling to find anything online that teaches me simple stuff like this. I am trying to just pass in 2 strings, where 1 string is returned as the tag and 1 string is returned as a new value. So far I have this, but am getting build errors.

declare function util:format-promo-tracking-element(
$fieldName as xs:string, 
$stringValue as xs:string)
{
    let $elementName := $fieldName
    if($stringValue = '5.00') then (
    let $stringValue := '4.05'

    return
        element {$elementName}
        {
            data($stringValue) 
        }  

    )
     else()   

};

I have tried moving the return statement to the end as well.

Upvotes: 0

Views: 193

Answers (1)

chrisis
chrisis

Reputation: 1993

XQuery is an functional language so trying to assign a new value to an existing variable is not allowed. I think you want something like this.

declare function util:format-promo-tracking-element(
$fieldName as xs:string, 
$stringValue as xs:string)
{
let $newValue := if ($stringValue = '5.00') then  '4.05' else $stringValue

    return
        element {$fieldName}
        {
            $newValue
        }  
};

There are quite a few basic examples on Wikibooks.

Upvotes: 2

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