Java Mapscript - querybyattribut

Oliver Wesp wesp at GDV.COM
Wed Mar 29 21:46:00 PST 2006


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
-- 
Dipl.-Geogr. Oliver Wesp
Gesellschaft fuer geografische Datenverarbeitung
Binger Strasse 49-51
D-55218 Ingelheim
fon: +49 6132 714818
fax: +49 6132 714828
http: www.gdv.com



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