[mapserver-users] long expression statement doesn't work anymore

Steve Lime Steve.Lime at dnr.state.mn.us
Wed Oct 21 08:20:09 PDT 2009


Any chance you could create a simple test case showing the problem? The fact it shows some
features is puzzling. If it was just a matter of the expression getting truncated then you should
see an expression parse error.

Steve

>>> Rafael Szajbel <szajbel at widemann.de> 10/21/2009 6:58 AM >>>
Hello,

in an older MapServer version (4.10.0) it is possible to use a very long Expression or Filter statement.

Like this one with over 1000 comma separated values:

      EXPRESSION ('[NR]' IN 'ID1,ID2,.................,ID1100')

This works fine:

With newer MapServer versions (whether cgi (expression in mapfile) or phpmapscript (expression set with setExpression)) like 5.2.1 or 5.6.0 beta3 only o small part of the polygons appears:


So is there a limit on expression statement since version 5?
There are no errors in the log-file with debug set to 5.

This is my layer definition:

  LAYER
         DATA "shapes/fs.shp"
         NAME "FS"
         STATUS ON
         TYPE POLYGON
         CLASS
              NAME "FS"
              EXPRESSION ('[NR]' IN 'ID1,ID2,.............................,ID1100')    # <-- of course without the points ;)
              STYLE
                    COLOR 255 255 200
                    OUTLINECOLOR 0 0 0
             END
        END
  END

Thanks for any hint.

Rafael

PS: It is not possible to classify on attributes.  









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