[Newbie] Output contains space around each value -- how do I delete the space?

[G. Ken Holman]

At 2010-04-03 10:05 -0400, Costello, Roger L. wrote:
>I have an XQuery that extracts all the data in a bookstore XML 
>document and formats the output as slash-delimited values. Here's my XQuery:
>
>-------------------------------------------------------
>declare namespace saxon = "http://saxon.sf.net/";
>declare option saxon:output "indent=no";
>declare option saxon:output "method=text";
>
>let $source := doc("bookstore.xml")
>
>return
>    (
>       string($source/bookstore/@storename),
>       "
>",
>       for $i in $source//book return
>          (
>              string($i/title),
>              "/",
>              string($i/author[1]),
>              "/",
>              string($i/date),
>              "/",
>              string($i/ISBN),
>              "/",
>              string($i/publisher),
>              "/",
>              string($i/cost[@currency='USD']),
>       "
>"
>          )
>    )
>-------------------------------------------------------
>
>The XQuery does almost exactly what I desire. However, there is a 
>space around each value. Here's the output:
>
>The ABC Book Store
>  The Origin of Wealth / Eric D. Beinhocker / 2006 / 1-57851-777-X / 
> Harvard Business School Press / 29.95
>...
>Why am I getting spaces around each value?

Because when two strings are added to the result, they are separted by spaces.

>How do I delete those spaces?

Typically you would use concat(), but in your case of having a slash 
delimiter, you need only use string-join():

       for $i in $source//book return
         string-join( (
              string($i/title),
              string($i/author[1]),
              string($i/date),
              string($i/ISBN),
              string($i/publisher),
              string($i/cost[@currency='USD'])
              ),
              "/" )

I hope this helps.

. . . . . . . . Ken

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