processLegendTemplate throws error

Typemap for mapping C type char** to Java String[]

Great.  I knew that you had have this!  Before we can commit it we need to know
who the author is.  Did you write it?

The author is whoever commited this into SWIG, this is just cut and pasted 
from http://www.swig.org/Doc1.3/Java.html, section 19.9.4. But it will not 
work with mapserver's char** arrays since the typemap assumes the last pointer 
will be NULL. If it's not, and with mapserver it is not, it will overrun the 
char** array.

OK.  Some work remains to be done.

The signature of the processLegendTemplate method looks like this:

    char *processLegendTemplate(char **names, char **values, int numentries)

what Java users need is a typemap that will convert two Java string arrays
(of names and values) into char **names and char **values, each of length
equal to numentries.  Something like this:

    typemap(in) (char ***names, char **values, int numentries) {
        /* convert two Java string arrays */
        ...
    }

I will commit such a typemap, but I can not make the time to write it.  The
attachment to this bug is a good start, but it is not ready to be committed
into mapscript.

As an aside, I cannot understand why anyone would want to use MapServer 
templates with Java!  Why not use standard Java templating?

Hi Sean,
In your last comment you wrote:
"As an aside, I cannot understand why anyone would want to use MapServer 
templates with Java!  Why not use standard Java templating?"

Why should I iterate through all active layers with all classes and generate 
the according legend symbols, put together an HTML legend based on a template 
if I then simply have the same as mapserver does in half of the processing time 
by simply calling processLegendTemplate() ?
processLegendTemplate() is easy to use, produces exactly what I want, is 
flexible and fast. That's it !

What I can't understand:
Why did the attached typemap work with mapserver 4.0 ?
I can use processLegendTemplate() with SWIGMapscript 4.0 from within Java 
without any problem !

regards
Andreas Paukner-Ruzicka
Geo-IT GmbH

Jerry, you mentioned on IRC that you were working on a safe typemap.  Any
progress?

reassigning.