[jruby-dev] [jira] (JRUBY-6762) How to detect if a Ruby method has been defined using ScriptingContainer

Sat, 07 Jul 2012 01:19:27 -0700

Issue Type: Wish Wish
Affects Versions: JRuby 1.6.7
Assignee: Unassigned
Components: Embedding, Java Integration
Created: 07/Jul/12 3:18 AM
Description:

We are doing something like this:

import org.jruby.embed.ScriptingContainer;
import java.util.Arrays;

class MethodsExample {
    pubic void myJavaMethod() {
    }

    public static void main(String[] args) {
        System.out.println("Hello world!");
        ScriptingContainer sc = new ScriptingContainer();
        MethodsExample me = new MethodsExample();

        Object rubyClass = sc.runScriptlet("Java::MethodsExample");
        sc.put("MethodExample", rubyClass);
        sc.runScriptlet("class MethodsExample ; def my_ruby_method ; puts 'YES!' ; end ; end");

        // Expect true
        sc.callMethod(me, "respond_to?" , new Object[]{"my_ruby_method"}, Boolean.class);
        // Want false
        sc.callMethod(me, "respond_to?" , new Object[]{"my_java_method"}, Boolean.class);
        // Want false
        sc.callMethod(me, "respond_to?" , new Object[]{"myJavaMethod"}, Boolean.class);
    }
}

We want to call the Ruby method only if it is defined on the Ruby side, and ignore it if it is only defined on the Java side.

Any ideas on how to do this?
Project: JRuby
Priority: Major Major
Reporter: Uwe Kubosch
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