Looks like we'll need to settle on a more permanent solution for
storing the graph XML file sooner than I expected. Currently there's
work being done on switching the Modeler to the new 3.1 project
structure. This task is a blocker for many other 3.1 improvements, so
we need to finish the switch ASAP.
The switch will introduce the new configuration model with one
DataDomain per configuration stack. This means that the current
mechanism for storing JGraph XML file, as implemented in
org.apache.cayenne.modeler.ModelerProject will no longer work. We can
probably make it work with the new API using some other means, but I'd
rather we have a clear picture first.
I still prefer the solution that I suggested before - store the layout
files under ~/.cayenne/, using generated unique names tied via
preferences to the filesystem location of a given project. Later we
can expand that to allow "Save As / Open" features, etc. to allow
users more control, but for now this should be the least invasive
option that would allow us to evolve the graph engine in the
background without affecting the users' ability to work with Modeler
3.1.
Thoughts?
Andrus
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