[fdo-internals] Please review FDO RFC 39 - Spatial operator combinations support

[Orest Halustchak]

Hi,

Here is another proposed enhancement to FDO expressions. We've had requests to handle the more general Relate spatial operator as defined by OGC.

RFC 39, drafted by Dan Stoica, adds to the list of spatial operators for FDO. The Relate operator is a bit more complex than the others due to the requirement of an additional operator mask parameter. The RFC also includes a reference to the OGC spec that includes a definition of the operator and the related mask.

http://trac.osgeo.org/fdo/wiki/FDORfc39

Have a look at the RFC and provide your comments.

Thanks,
Orest.

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