openlayers/openlayers — pull request #717 by walkermatt (2012-10-13 19:20:26+00:00)
Title: Support for PropertyIsNull Filter

I opened #716 a few days back offering to implement support for the PropertyIsNull filter. This pull request includes the filter OpenLayers.Filter.Comparison.IS_NULL and corresponding support for read/write as an OGC filter in XML.

As requested by @bartvde I've included tests for both aspects.

Thanks,

Matt.