Re: [Re: First Occurrence of an Element]

[Daniel Speck <dspeck@xxxxxxxxxxxx>]

Chuck Darney wrote:

> These both work to find the lowest level of the element, but not just
> the first time it occurs.  I have an element SECTION.  It can and will
> ocuur throughout the instance.  There can be SECTIONs within
> SECTIONs...  What I need to do is execute a function the first time a
> SECTION element is encountered, but never again.

See section 12.2.4.2 "Counting" of the DSSSL Standard. You want the function
(element-number snl), e.g.,

(element section
    (if (= (element-number (current-node)) 1)
        ; something
        ; otherwise something else
    )
)

> Should a switch be set
> within the executed function to say that it's been done and it's not to
> be done again?
>

No, you can't do this in pure DSSSL because it is side-effect free.

-dan

--
Daniel Speck                              e-mail: dspeck@xxxxxxxxxxxx
Systems Engineer                           voice:     +1 301.548.7818
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