Declaration of certain method name (setJavaObject(Xxx x)) will throw an
exception using BSF
-------------------------------------------------------------------------------------------
Key: JRUBY-1562
URL: http://jira.codehaus.org/browse/JRUBY-1562
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.0.2
Environment: Windows XP SP2
Reporter: Sebastien AUVRAY
Priority: Minor
Attachments: JRubyBSFProxyTest.java, MyJObject.java
When defining the method _setJavaObject(SomeObject so)_ in Java and using this
Java Object from Ruby (in my case extending it), The following exception will
occur:
{noformat}
Exception: <script>:5:in `__jcreate!': invokee not a java object (TypeError)
from
file:/D:/sa/bin/jruby-1.0.2/lib/jruby.jar!/builtin/javasupport/proxy/concrete.rb:24:in
`initialize'
from
file:/D:/sa/bin/jruby-1.0.2/lib/jruby.jar!/builtin/javasupport/proxy/concrete.rb:7:in
`new'
from
file:/D:/sa/bin/jruby-1.0.2/lib/jruby.jar!/builtin/javasupport/proxy/concrete.rb:7:in
`new'
from <script>:1
...internal jruby stack elided...
from org.jruby.Ruby.eval(Ruby.java:278)
from org.jruby.Ruby.evalScript(Ruby.java:271)
from org.jruby.javasupport.bsf.JRubyEngine.eval(JRubyEngine.java:103)
from org.apache.bsf.BSFManager$5.run(Unknown Source)
from java.security.AccessController.doPrivileged(Native Method)
from org.apache.bsf.BSFManager.eval(Unknown Source)
from TestSetJavaObject.main(TestSetJavaObject.java:31)
from sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
from
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
from
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
from java.lang.reflect.Method.invoke(Method.java:324)
from
com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
{noformat}
It seems as if _java_object=_ which is used internally is messing around.
To reproduce:
{code:title=JRubyBSFProxyTest.java|borderStyle=solid}
import org.apache.bsf.BSFManager;
import junit.framework.TestCase;
public class JRubyBSFProxyTest extends TestCase {
private static final String RUBY_CODE = "require 'java'\n" +
"\n" +
"include_class \"MyJObject\"\n" +
"\n" +
"class MyOwnJavaInRuby < MyJObject\n" +
"\t\n" +
"end";
public static void testSetJavaObjectDoesNotRaiseException() {
try {
BSFManager.registerScriptingEngine("ruby",
"org.jruby.javasupport.bsf.JRubyEngine", new String[]{"rb"});
BSFManager manager = new BSFManager();
manager.exec("ruby", "my_own_java_in_ruby.rb", -1, -1, RUBY_CODE);
//--- Make a new ruby object
String expr = "MyOwnJavaInRuby.new";
MyJObject ruby = (MyJObject) manager.eval("ruby",
"my_own_java_in_ruby.rb", -1, -1, expr);
} catch (Exception e) {
e.printStackTrace();
fail("public void setJavaObject(String myJavaObject) should not
raise an exception");
}
}
}
{code}
{code:title=MyJObject.java|borderStyle=solid}
public class MyJObject {
public void setJavaObject(String myJavaObject) {
}
}
{code}
Commenting out setJavaObject (or use different name) method will make things
work.
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