opengeospatial / opengeospatial/ogcapi-features

Semantics of attribute filtering?

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#67 14 comments 0 reactions 2 assignees View on GitHub

@cmheazel is already working on this.

Since Mar 20, 2018.

Future work OGC API: Features
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Description

https://rawgit.com/opengeospatial/WFS_FES/master/docs/17-069.html#_parameters_for_filtering_on_feature_properties

specifies that query parameters could be added for significant feature properties and goes on to show a case in which an enum is used.
What about open ended strings and numbers though, what is the semantics of the filtering?
Like, for open ended string it might be useful to match anything that contains the specified string ("like" filter wise). for numbers and also for dates it would be useful to support not just equality matches but also ranges.

This could allow to support a minimal filtering interface for WFS core. (for more complex needs a dedicated extension based on FES or CQL filter would be nice).

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