JRuby

TypeError converting java class to interface

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Cannot Reproduce
  • Affects Version/s: JRuby 1.6.2
  • Fix Version/s: None
  • Component/s: None
  • Labels:
    None
  • Number of attachments :
    0

Description

From https://aptanastudio.tenderapp.com/discussions/problems/3334-cannot-install

An error occurred while processing the invoke block for the command Install Bundle in U:\3.7\configuration\org.eclipse.osgi\bundles\1519\1.cp\bundles\bundle-development.ruble\commands\install_bundle.rb: (TypeError) cannot convert instance of class org.jruby.java.proxies.ConcreteJavaProxy to interface org.eclipse.jface.viewers.IStructuredContentProvider 
org.jruby.exceptions.RaiseException: (TypeError) cannot convert instance of class org.jruby.java.proxies.ConcreteJavaProxy to interface org.eclipse.jface.viewers.IStructuredContentProvider
at #<Class:0x1011f84de>.request_item(U:/3.7/configuration/org.eclipse.osgi/bundles/1520/1/.cp/framework/ruble/ui.rb:147)
at #<Class:0x10018f9d7>.define_command(U:\3.7\configuration\org.eclipse.osgi\bundles\1519\1\.cp\bundles\bundle-development.ruble\commands\install_bundle.rb:51)
at org.jruby.RubyProc.call(org/jruby/RubyProc.java:268)
at org.jruby.RubyProc.call(org/jruby/RubyProc.java:232)

The code in question is, specifically line 2 here:

ui.rb
dialog = org.eclipse.ui.dialogs.ListDialog.new(shell)
dialog.content_provider = org.eclipse.jface.viewers.ArrayContentProvider.new
dialog.label_provider = org.eclipse.jface.viewers.LabelProvider.new
dialog.input = items

in ListDialog, here's the method being called:

ListDialog.java
public void setContentProvider(IStructuredContentProvider sp) {
  fContentProvider = sp;
}

Activity

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Charles Oliver Nutter added a comment -

Im going to resolve this as "cannot reproduce" for now. The error in question should only happen if the object actually can't be cast to the interface in question. This can happen if the interface was loaded from a sibling classloader to the object's type's class, or obviously if the object actually doesn't implement the interface.

Either way, please re-test with a more recent JRuby version (1.6.6.dev ideally, from http://ci.jruby.org/snapshots) and if you still have a problem we can dig into it.

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Charles Oliver Nutter added a comment - Im going to resolve this as "cannot reproduce" for now. The error in question should only happen if the object actually can't be cast to the interface in question. This can happen if the interface was loaded from a sibling classloader to the object's type's class, or obviously if the object actually doesn't implement the interface. Either way, please re-test with a more recent JRuby version (1.6.6.dev ideally, from http://ci.jruby.org/snapshots ) and if you still have a problem we can dig into it.
Charles Oliver Nutter made changes -
Field Original Value New Value
Status Open [ 1 ] Resolved [ 5 ]
Assignee Thomas E Enebo [ enebo ] Charles Oliver Nutter [ headius ]
Resolution Cannot Reproduce [ 5 ]
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Peter Juhl Christiansen added a comment -

I was just now able to reproduce this error. The issues was seen by updating from 1.5.6 where the code is working and well tested, but gives this error on 1.6.7. Unfortunately the code is running in a complicated setup, so at pressent I cant submit an example.

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Peter Juhl Christiansen added a comment - I was just now able to reproduce this error. The issues was seen by updating from 1.5.6 where the code is working and well tested, but gives this error on 1.6.7. Unfortunately the code is running in a complicated setup, so at pressent I cant submit an example.
Charles Oliver Nutter made changes -
Status Resolved [ 5 ] Closed [ 6 ]

People

  • Assignee:
    Charles Oliver Nutter
    Reporter:
    Christopher Williams
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Dates

  • Created:
    Updated:
    Resolved: