[SIS-341] Support "crs-compound" in URLs

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7
• Fix Version/s: 0.8
• Component/s: Referencing
• Assignee: Martin Desruisseaux
• Reporter: Martin Desruisseaux
• Created: 28/Nov/16 13:04
• Updated: 21/Jan/24 16:29
• Resolved: 14/Oct/17 15:24

Description

The CRS.forCode(String) method accepts URL in the crs space, like below:

http://www.opengis.net/def/crs/epsg/0/4326

We need to also accept URL in the crs-compound space, like below:

http://www.opengis.net/def/crs-compound?
1=http://http://www.opengis.net/def/crs/OGC/0/AnsiDate&
2=http://www.codes.wmo.int/GRIB2/table4.5/IsobaricSurface

It should be possible to use this kind of CRS in GML like below (example from U.K. MetOffice):

<cis:envelope srsName="http://www.opengis.net/def/crs-compound?
                       1=http://http://www.opengis.net/def/crs/OGC/0/AnsiDate&amp;
                       2=http://www.codes.wmo.int/GRIB2/table4.5/IsobaricSurface"
              axisLabels="Time pressure" srsDimension="2">
    <cis:axisExtent axisLabel="Time" uomLabel="ISO8601" lowerBound="PT0H" upperBound="PT48H" />
    <cis:axisExtent axisLabel="pressure" uomLabel="hPa" lowerBound="1000.0" upperBound="200.00" />
</cis:envelope>

If using the URN syntax, then this is rather a comma-separated value list (more description in Definition identifier URNs in OGC namespace). Example:

urn:ogc:def:crs,crs:EPSG:6.3:27700,crs:EPSG:6.3:5701

Issue Links

• is depended upon by: SIS-490 Compound CRS creation through codes: OGC/Time
• is related to: SIS-342 Support temporal CRS in URL