Hide tileindex layer

[Steve Lime]

Does this warrant a brief RFC? This might be an opportunity to isolate
the majority of
WxS configuration in metadata and remove an oddball configuration
option like "DUMP".

Steve

>>> Frank Warmerdam <warmerdam at POBOX.COM> 11/16/2006 1:43:37 AM >>>
Denis Nadeau wrote:
> Following Bug 1952, 
> 
> I volunteer to write a patch that allows users to specify if a layer
is 
> visible or not. 
> I have planed to add the following metadata:
> 
> ows_service <wms || wcs || wfs || none >
> 
> This metadata would allow to control the layers showed in a Get 
> Capability.  If a developer want to show a layer in wcs only, 
> ows_service could be set to wcs.
> For Tileindex layers, developer could set ows_service to none and a
Get 
> Capability request would not show this layer. 
> 
> If no "ows_service" metadata is defined, mapserver would produce the

> same Get Capability result shown in the current release, 4.10.

Denis,

I like this approach.  Don't forget SOS, our fourth OWS service.

For services like WCS that currently have other rules, I think you
should produce a mapserver error if the service is listed in the
ows_service metadata but the layer is not enabled for other reasons.

For instance we already have:

/************************************************************************/
/*                       msWCSIsLayerSupported()                       
*/
/************************************************************************/

static int msWCSIsLayerSupported(layerObj *layer)
{
     /* only raster layers, with 'DUMP TRUE' explicitly defined, are
elligible 
to be served via WCS, WMS rasters are not ok */
     if(layer->dump && (layer->type == MS_LAYER_RASTER) && 
layer->connectiontype != MS_WMS) return MS_TRUE;

     return MS_FALSE;
}

I think if the wcs service is listed but the layer is not a raster
layer,
or does not have DUMP TRUE set, then an error should be emitted
explaining
the problem.

I also think there should be an "all" option indicating that a layer
should be made visible to all *applicable* services.

Making sure thre is an msWxSIsLayerSupported() method for each of the
services might be a good idea.  I'm not sure this sort of thing exists
for all the services.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com 
light and sound - activate the windows | http://pobox.com/~warmerdam 
and watch the world go round - Rush    | President OSGeo,
http://osgeo.org