openmicroscopy/openmicroscopy — pull request #37 by melissalinkert (2011-12-01 14:32:56+00:00)
Title: Do not link objects that have already been linked

If an object can reference multiple objects of the same type, then
before adding a reference to an object we must check if that object is
already referenced. This prevents additional references to the same
object from being created on successive calls to link(...).

Closes #7017.