Undocumented Jython — Java callable Jython class idiom

You have to do

	from java import lang
	class Backplane(lang.Object):
	def performSetup(self, arg):
	"@sig public void performSetup(java.lang.String arg)"
	...

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and not

	import java
	import java.lang
	class Backplane(java.lang.Object):
	def performSetup(self, arg):
	"@sig public void performSetup(java.lang.String arg)"
	...

view raw gistfile1.py hosted with ❤ by GitHub

in order to make jythonc generate the function calls you want in the intermediate Java code.

And as I'm in a “Jython calls Java calls Jython” state, doing some transcoding/refactoring, I have still not managed to get Jython at the front to call nicely into the Jython at the back.

	import myPackage
	obj = myPackage.Backplane()
	print obj.getArg0
	print obj.getArg0()

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causes

method myPackage.Backplane.performSetup of myPackage.Backplane instance 1
Traceback (innermost last):
  ...
AttributeError: abstract method "performSetup" not implemented

despite it being there quite plain as day:-

	public void performSetup(java.lang.String arg) {
	...
	}

view raw gistfile1.java hosted with ❤ by GitHub

and despite Java code calling it quite happily.

*sigh*