I am having some issues with queries that combine both attribute expressions (currently in ECQL) and spatial queries when in polar regions, and using layers in EPSG:4326. The problem with ECQL spatial operators is that the expressions must be in terms of native CRS. Away from the poles, I manage this by splitting any polygon that crosses the 180 in two polygons and adding an AND clause to the query. Splitting a polygon that crosses the 180 AND includes a pole is challenging to say to the least. If someone has an algorithms to do this, then I am all ears.
Conceptually it would be easier to request the polygon in the projected coordinates but cant do that with ECQL. It seems I would have to convert the CQL expression into an OGC filter. Does anyone have existing code for this? Does that actually exist somewhere in the geoserver source code even? Notice: This email and any attachments are confidential and may not be used, published or redistributed without the prior written consent of the Institute of Geological and Nuclear Sciences Limited (GNS Science). If received in error please destroy and immediately notify GNS Science. Do not copy or disclose the contents.
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