1.4: JsonSubTypes break GWT .cache.html files

[r3use]

If you have a service with polymorphic parameters and several defined JsonSubTypes, GWT .cache.html files will change when recompiling the same source.

According to http://www.gwtproject.org/doc/latest/FAQ_DebuggingAndCompiling.html#What it should guaranteed that "if you recompile your application without changing code, the contents of the output will not change."

I tracked down the reason to class org.fusesource.restygwt.rebind.JsonEncoderDecoderClassCreator. findJsonSubType stores subtypes in a HashSet which does not guerantee any specific order of its content when iterating over it.

I think this issue is still present in newer versions of resty-gwt.

A possible solution is to sort the List returned by getPossibleTypes in the generate method of JsonEncoderDecoderClassCreator before generating the output.

[mkristian]

since you already found a solution - could you just prepare a PR request for this. not sure how to automatically test this - so it really depends on manually testing where you are THE person for it ;)

[r3use]

Sure.

Do you have any quality/style requirements for PRs?

[mkristian]

no - not really. just do not reformat the whole file so the actual diff is understandable ;)

[seamusmac]

@mkristian I guess we can close this too :)