Java Mapscript - querybyattribut

[listuser HH]

Oliver Wesp wrote:

> Dear List,
>
> I' struggling with queryByAttributes on an attribute field with german 
> umlauts using java mapscript.
> The odd thing is that the same thing works fine with php mapscript and 
> when I use expressions in my  mapfile. I'm using a shapefile as 
> datasource.
>
> Here is what I do:
>
> layer.queryByAttributes(map,"KREIS_NAME", "/Südliche Weinstraße/",
> mapscriptConstants.MS_MULTIPLE);
> layer.open();
> System.out.println( "Result Count: " +layer.getNumResults() );
> layer.close();
>
> The result is always null while replacing the qstring with something 
> that doesn't contain special characters (e.g.
> 'Mainz-Bingen') works fine.
>
> As noted above the following layer definition in a mapfile works fine
>
> LAYER
>     NAME kreis
>     STATUS DEFAULT
>     TYPE polygon
>     DATA "/tmp/subset"
>     TEMPLATE "kreis.html"
>     CLASSITEM KREIS_NAME
>     CLASS
>       NAME Boundary
>       COLOR 128 128 0
>       OUTLINECOLOR 0 0 0
>       EXPRESSION /Südliche Weinstraße/
>     END
> END
>
>
> but this does not:
>
> layer.setClassitem("KREIS_NAME");
> classObj cl = new classObj(layer);
> cl.setName("Classname");
> cl.setExpression("/Südliche Weinstraße/");
>
> I use Mapserver 4.8.1 on W2k, Tomcat 5.0.28.
>
> I can provide some sample data, just in case someone likes to reproduce.
>
> Any help is appreciated.
>
> best regards
> Oliver

Hi Oliver,

only a guess but there seems to a difference in the string encoding 
between the mapserver lib in the system and java. Try to convert the 
String before you set the expression in your code. (-> String( byte 
bytes[], String ) throws UnsupportedEncodingException)

Please let me if this helps or how you solved it.

Regards,

Norbert