Message9269

Objects that implement java.util.Set when proxied from Python should have standard set methods and semantics.

Making urgent: this fix needs to be in beta 4 because of the backwards breaking change in overriding remove so it has Python, not Java semantics, and raises KeyError if object is not present:

>>> from java.util import TreeSet
>>> x = TreeSet(xrange(0, 10, 2))
>>> x
[0, 2, 4, 6, 8]
>>> x.remove(9)
False   # should raise KeyError
>>> x.remove(6)
True    # should return None
>>> x.add(5)
True
>>> x
[0, 2, 4, 5, 8] # ordering is maintained, nice!

As usual, we expect the standard test suite in test_set will pass, with only a small number of changes.

Related and now fixed bugs include for java.util.Map (http://bugs.jython.org/issue1631) and java.util.List (http://bugs.jython.org/issue2215)