[#JRUBY-5866] JRuby can't access nested Java class if the class is called 'id' - jira.codehaus.org

Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Won't Fix
Affects Version/s: JRuby 1.6.2
Fix Version/s: JRuby 1.7.0.pre1
Component/s: Java Integration
Labels:
None
Environment:
Android 3.1, ruboto-core master

Number of attachments :
0

Description

Hi!

I need to access

android.R.id.home

or

android.R::id.home

This is a standard constant in Android. "id" is an inner class of android.R.

I am able to access the class using

JavaUtilities.get_proxy_class('android.R$id').home

so I have an acceptable workaround, but ~~JRUBY-4666~~ states I should be able to access the class without using JavaUtilities.

Any way to do this?

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Charles Oliver Nutter added a comment - 28/Jun/11 3:18 PM

The main problem here is that the class starts with a lower-case name; we don't currently map inner classes that are not capitalized.

The easiest way to do this may be to import the class as a specific name, rather than trying to access it directly:

~/projects/jruby &#10132; cat Blah.java
public class Blah {
  public static class id {
    public static String hello() {
      return "hello";
    }
  }
}

~/projects/jruby &#10132; jruby -rjava -e 'import "Blah$id" do; "Blah_id"; end; p Blah_id.hello'
"hello"

I suppose we could improve the inner class mapping to support lower-case class names, but in general all such cases we've left to explicit imports, even for normal top-level classes.

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Charles Oliver Nutter added a comment - 28/Jun/11 3:18 PM The main problem here is that the class starts with a lower-case name; we don't currently map inner classes that are not capitalized. The easiest way to do this may be to import the class as a specific name, rather than trying to access it directly: ~/projects/jruby ➔ cat Blah.java public class Blah { public static class id { public static String hello() { return "hello"; } } } ~/projects/jruby ➔ jruby -rjava -e 'import "Blah$id" do; "Blah_id"; end; p Blah_id.hello' "hello" I suppose we could improve the inner class mapping to support lower-case class names, but in general all such cases we've left to explicit imports, even for normal top-level classes.

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Uwe Kubosch added a comment - 20/Dec/11 7:06 AM

Closing this since there are two acceptable ways to do this.

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Uwe Kubosch added a comment - 20/Dec/11 7:06 AM Closing this since there are two acceptable ways to do this.

JRuby can't access nested Java class if the class is called 'id'

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