Closure conversion doesn't play nice with some interface method names
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Key: JRUBY-5294
URL: http://jira.codehaus.org/browse/JRUBY-5294
Project: JRuby
Issue Type: Bug
Components: Java Integration
Affects Versions: JRuby 1.5.6
Environment: Mac OS X 10.6.5
Java(TM) SE Runtime Environment (build 1.6.0_22-b04-307-10M3261)
Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03-307, mixed mode)
JRuby 1.5.6
Reporter: Jason Fager
Attachments: jruby_exec_method_problem.tar.gz
Define a Java interface with a single-argument method named 'exec'. Define a
Java class that defines a method that uses instances of that interface as a
callback. Use JRuby to invoke the class's method using a block as its argument,
attempting to take advantage of the closure conversion feature of JRuby.
When the callback is invoked by the Java method, rather than running the code
defined in the block, the system attempts to coerce the argument to a String
and Kernel.exec it. The same issue happens for any Kernel.* method name I've
tried.
I'm a complete Ruby/JRuby noob, but based on a quick perusal of the code, it
looks like closure conversion is implemented by defining method_missing on a
fresh new RubyClass, and that any methods already defined for Ruby's Object are
going to be invoked ahead of any interface methods with the same names. This
behavior may be completely expected, then; if so, I apologize for the trouble.
I've attached example code illustrating the problem.
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