[armedbear-devel] Issue finding methods in JSS

Jonathan P. Bona jonathanbona at gmail.com
Thu Jul 19 19:54:45 UTC 2012


We found this issue while working with LSW. It seems to be a bug in
how public methods are found for inner classes. The last line of code
below results in an exception rather than finding and running the
size() method:

(require :abcl-contrib)
(require :jss)
(setq headers (#"getHeaderFields" (#"openConnection" (jss::new
'java.net.url "http://google.com"))))

; a java.util.Collections$UnmodifiableRandomAccessList
(setq ural (#"get" headers (second (jss::set-to-list (#"keySet" headers)))))

;finds:  #<method public int
(find "size" (#"getMethods" (#"getClass" ural) ) :test 'string-equal
:key #"getName")

; Java exception 'java.lang.NoSuchMethodException: No applicable
method named size found in java.lang.Object or
(#"size" ural)

I chased this into org.armedbear.lisp.Java, where findMethod is returning null.

- Jonathan Bona

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