Part 3: Filtering using Spatial dimension

[Karyme-Nava]

If I need to use Spatial dimension as a spatialOperand using the expressions for filtering (as overlaps, contains, touches, etc) in the CQL filter param, how should I specify the Spatial dimension? If I use "property":"geometry" is confusing since a Feature's Spatial dimension is not included in the properties of a Feature's item response.
see: Example 8. Examples of a NULL predicate
{ "not": { "isNull" : { "property": "geometry" } } }

Example 9. Example spatial predicate
{ "intersects": [ { "property": "geometry" }, { "type": "Polygon", "coordinates": [ [ [36.319836, 32.288087], [36.320041, 32.288032], [36.320210, 32.288402], [36.320008, 32.288458], [36.319836, 32.288087] ] ] } ] }

[cportele]

There is no build-in function that returns the spatial dimension, so you have to extend CQL2 with a custom function. For example:

{
  "op": "spatialDim",
  "args": [ { "property": "geometry" } ]
}