NoMethodError does not give a useful message when thrown in BSF
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Key: JRUBY-2905
URL: http://jira.codehaus.org/browse/JRUBY-2905
Project: JRuby
Issue Type: Bug
Components: Java Integration
Affects Versions: JRuby 1.1.3
Environment: Seen on OS X 10.5.4, Java 1.5.0_13, with BSF 2.3.0 or
2.4.0
Reporter: Rhett Sutphin
Attachments: NameErrorBsf.tar.gz
When you call an invalid method in a script running through BSF, the exception
message includes something like "#<NameError::Message:0x2b8b27>". This makes
it difficult to determine which method is causing the problem. E.g., with this
code:
{code}
import org.apache.bsf.BSFException;
import org.apache.bsf.BSFManager;
public class NameErrorDemo {
static {
BSFManager.registerScriptingEngine("ruby",
"org.jruby.javasupport.bsf.JRubyEngine", new String[] { "rb" });
}
public static void main(String[] argv) throws Throwable {
BSFManager bsf = new BSFManager();
bsf.exec("ruby", "(java)", 0, 0, "'test'.invalid_method");
}
}
{code}
I get this exception:
{noformat}
<script>:1: #<NameError::Message:0x2b8b27> (NoMethodError)
...internal jruby stack elided...
Exception in thread "main" org.apache.bsf.BSFException: Exception
at org.jruby.javasupport.bsf.JRubyEngine.exec(JRubyEngine.java:120)
at org.apache.bsf.BSFManager$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.bsf.BSFManager.exec(Unknown Source)
at bugs.NameErrorDemo.main(NameErrorDemo.java:13)
{noformat}
A similar call in (jruby) irb does not have this problem:
{noformat}
irb(main):001:0> 'test'.invalid_method
NoMethodError: undefined method `invalid_method' for "test":String
from (irb):2
{noformat}
The attached buildr project includes a test case illustrating this issue as
well as the above code.
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