Report so far on switching to Cayenne 3.1

[Øyvind Harboe <oy...@zylin.com>]

I'm working on upgrading from a development build
of 3.0 to 3.1.

Here is a list of things that I have done so far:

- Tip: upgrade to 3.0.x to 3.0.1 and fix deprecated warnings
and test.
- new Ordering() has changed constructors. Switched to
non-deprecated versions.
- The LifeCycle interface has new methods. Add stubs
before switching to 3.1.
- MergerContext has a new method: getDataNode() => add it.
- Stop using ResourceLocator, it's deprecated.
- getDataContext() in CayenneDataObject is gone in 3.1, add
a getDataContext() method in my superclass to the generated
classes from Cayenne modeler.
- DataObjectUtils is deprecated, get rid of warnings by switching
to Cayenne class.
- getMap() => getDataMap() to fix deprecated warnings.
- I've added a Configuration class to replace the Configuration
class that is now gone in Cayenne 3.1.

Things now build but I run into problems, which I'll address
in a separate post.

-- 
Øyvind Harboe

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