[fdo-internals] WMS with parent - child feature classes

Karsten Winter karsten.winter at autodesk.com
Tue Apr 7 08:30:54 PDT 2015

Hi all

I have experienced an interesting behaviour on the WMS provider when feature
classes have child feature classes.
In this case the child feature classes inherit the attributes *and
*coordinate systems (CS) of the parent feature class.
On one server we have the curiosity that one parent feature class has
several child feature classes, but not the same CS than the child feature
classes. The parent feature class also does not have the CS which will be
returned as the one from the WMS service capabilities. *But *the child
feature classes have this coordinate system.

For Map 3D this makes it not possible to show the feature classes
(parent/child) in the data connect UI as the CS of the feature classes does
not match the CS from the WMS service!

Is the above configuration valid for FDO, when the parent feature class has
other CS than the child feature classes?
Why does the child feature classes inherit all the information (incl. CS)
from the parent and cannot be requested alone?

Best regards

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