Custom projections not supported via WFS

[geographika]

Pull request #6795 allowed custom projections to be requested through WMS requests, however WFS and WCS don't have the same support.

Use of custom projections currently return the following error:

<ows:Exception exceptionCode="InvalidParameterValue" locator="srsname">
    <ows:ExceptionText>msWFSGetFeature(): WFS server error. Invalid GetFeature Request:Invalid SRS.  Please check the capabilities and reformulate your request.</ows:ExceptionText>
</ows:Exception>

Adding support would allow requests such as the following to be supported:

• map=wfs_custom_projection.map&SERVICE=WFS&VERSION=2.0.0&REQUEST=GetFeature&TYPENAME=province&srsname=epsg2:42304

• map=wfs_custom_projection.map&SERVICE=WFS&VERSION=2.0.0&REQUEST=GetFeature&TYPENAME=province&srsname=ESRI:108022

[jratike80]

I would like to see how that custom CRS would appear in the GML3 from WFS 2.0 and in the DescribeCoverage from WCS 2.0.

[geographika]

@jratike80 if there was a custom definition such as epsg2::42304 it would be included in the Mapfile as follows:

WEB
  METADATA
    "wfs_title"		   "Test simple wfs"
    "wfs_srs"		   "epsg2:42304 EPSG:4326 EPSG:3857 esri:102001"

And would appear in the responses in the following form (for WFS 2.0 or if wfs_return_srs_as_urn is set to True for earlier WFS versions):

      <wfs:boundedBy>
      	<gml:Envelope srsName="urn:ogc:def:crs:epsg2::42304">
      		<gml:lowerCorner>2253355.750000 -76361.773438</gml:lowerCorner>
      		<gml:upperCorner>2747648.500000 515489.031250</gml:upperCorner>
      	</gml:Envelope>

GetCapabilities would look as follows:

  <FeatureTypeList>
    <FeatureType>
      <Name>ms:province</Name>
      <Title>province</Title>
      <DefaultCRS>urn:ogc:def:crs:epsg2::42304</DefaultCRS>
      <OtherCRS>urn:ogc:def:crs:EPSG::4326</OtherCRS>
      <OtherCRS>urn:ogc:def:crs:EPSG::3857</OtherCRS>
      <OtherCRS>urn:ogc:def:crs:esri::102001</OtherCRS>
      <OutputFormats>

WCS projection code paths are again different from both WMS and WFS so would be addressed separately.