[Java][Client] Add support for enum-typed discriminator

[johnlinp]

Fixes #806

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Java committee members: @bbdouglas @sreeshas @jfiala @lukoyanov @cbornet @jeff9finger @karismann @Zomzog @lwlee2608 @nmuesch Please take your time to check my PR. Thank you.

[johnlinp]

CircleCI reports that my PR have failed the command mvn --no-snapshot-updates --quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error. However, I can successfully execute this command on my local machine. Can someone give me some hints about how to fix it? Thank you.

[johnlinp]

It seems that the problem was caused by the method public boolean isEnumProperty(). When I changed it into public boolean getIsEnumProperty(), the command will successfully execute on CircleCI.

[johnlinp]

@wing328 Could you please take a look at my PR? Thank you!

[aeneasr]

Given that the CI is passing completely, and this is resolving a pesky bug with enums, would you mind taking a look @wing328 ? :)

[CSALS]

Any update on this?

[elagerho]

Any updates? :)

[StrangePingouin]

Hello,
Any updates on this issue ?
I'm facing the exact same one