ClassCastException when Queue implements Java interface
-------------------------------------------------------
Key: JRUBY-5166
URL: http://jira.codehaus.org/browse/JRUBY-5166
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.5.3, JRuby 1.5.2
Environment: On both Windows and Linux.
Reporter: Bob Whiteside
The following code gets a ClassCastException:
----
require 'thread'
require 'java'
class RunnableQueue < Queue
include Java::java.lang.Runnable
end
puts RunnableQueue.new.size
----
The exception looks like:
---
org/jruby/libraries/ThreadLibrary$Queue$i_method_0_0$RUBYINVOKER$length.gen:65535:in
`call': java.lang.ClassCastException: RunnableQueue_367947505 cannot be cast
to org.jruby.libraries.ThreadLibrary$Queue
from CachingCallSite.java:289:in `cacheAndCall'
from CachingCallSite.java:108:in `call'
from queue.rb:39:in `__file__'
from queue.rb:-1:in `load'
from Ruby.java:685:in `runScript'
from Ruby.java:568:in `runNormally'
from Ruby.java:414:in `runFromMain'
from Main.java:286:in `run'
from Main.java:128:in `run'
from Main.java:97:in `main'
bash-3.2$
---
I hope this is not a waste of your time: I *think* this is how I should be
able to make Queue declare that it implements a Java interface. This runs
successfully on 1.1.6 and 1.2
Cheers,
--Bob
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