mapscript query question

[Jerry Pisk]

Chris,

the layer is already open when you query it, the second opening might
clear out the results. Try to take that call out and move your close
call one block out.

Jerry

On 1/19/06, Christopher Condit <condit at sdsc.edu> wrote:
>
>
> I'm using C# MapScript to build my MapFile.  This is working great.  Now I
> want to query the MapFile programmatically – but can't seem to figure out
> how to do it.  Is there a tutorial that I'm not seeing?
>
> Here's my code snippet:
>
> layerObj queryLayer = map.getLayerByName("myLayer");
>
> if (null != queryLayer)
>
> {
>
> int count = queryLayer.queryByPoint(myMap, new pointObj(-82, 25, 0, 0),
> mapscript.MS_MULTIPLE, 5.0d);
>
> if (count > 0)
>
>       {
>
> queryLayer.open();
>
> for (int i = 0; i < count; i++)
>
> {
>
> resultCacheMemberObj result = queryLayer.getResult(i);
>
> shapeObj shape = obisLayer.getFeature(result.shapeindex, result.tileindex);
>
>             }
>
>
>             queryLayer.close();
>
>       }
>
> }
>
>
>
> The resultCacheMemberObj never gets a value, even when query by point
> returns > 0.  Here's my layer definition:
>
> LAYER
>
>     CONNECTION "user/pass"
>
>     CONNECTIONTYPE ORACLESPATIAL
>
>     DATA "SHAPE FROM (SELECT * FROM MYTABLE WHERE NAME LIKE 'S%') USING
> UNIQUE ROWNUM"
>
>     DUMP TRUE
>
>       METADATA
>
>         "wfs_title" "SimpleWFSTest"
>
>         "gml_include_items"          "all"
>
>       END
>
>     NAME "myLayer"
>
>     PROJECTION
>
>       "init=epsg:4326"
>
>     END
>
>     SIZEUNITS PIXELS
>
>     STATUS DEFAULT
>
>     TOLERANCEUNITS PIXELS
>
>     TRANSPARENCY 100
>
>     TYPE POINT
>
>     UNITS DD
>
>     CLASS
>
>       METADATA
>
>       END
>
>       STYLE
>
>         ANGLE 360
>
>         COLOR 255 0 0
>
>         OUTLINECOLOR 0 255 0
>
>         SIZE 8
>
>         SYMBOL "circle"
>
>       END
>
>     END
>
>   END
>
>
>
> Thanks,
>
>
>
> Chris