Lost implicit conversion from ruby Time to java.util.Date
---------------------------------------------------------
Key: JRUBY-4784
URL: http://jira.codehaus.org/browse/JRUBY-4784
Project: JRuby
Issue Type: Bug
Components: Java Integration
Affects Versions: JRuby 1.5.0.RC2, JRuby 1.5
Environment: jruby 1.5.0.RC3 (ruby 1.8.7 patchlevel 249) (2010-05-04
603f15a) (Java HotSpot(TM) Client VM 1.6.0_19) [i386-java]
Reporter: David Kellum
Attachments: test_ruby_time_to_java.rb, TypeCheck.java
JRuby 1.2.x,1.4.x, through 1.5.0.RC1 performed an implicit conversion of Ruby
Time to java.util.Date, when calling a Java method which takes
java.lang.Object. This behavior was lost between 1.5.0.RC1 and 1.5.0.RC2 and is
still absent in RC3.
Note that this conversion is still performed correctly in all versions when the
Java method takes a java.util.Date instead of java.util.Object.
Here is the test code (also attached):
{code:java}
public class TypeCheck
{
public static String className( Object o )
{
return o.getClass().getName();
}
}
{code}
{noformat}
#!/usr/bin/env jruby
#.hashdot.profile += jruby-shortlived
require 'java'
require 'test/unit'
class TestRubyTimeToJava < Test::Unit::TestCase
import 'TypeCheck'
def test_type_object
assert_equal( 'java.util.Date', TypeCheck::class_name( Time.now ) )
end
import 'java.text.SimpleDateFormat'
def test_type_date
assert_equal( Time.now.year.to_s,
SimpleDateFormat.new( "yyyy" ).format( Time.now ) )
end
end
{noformat}
And here is the output for various versions:
{noformat}
% javac TypeCheck.java
% jruby-1.4 -wv ./test_ruby_time_to_java.rb
jruby 1.4.1 (ruby 1.8.7 patchlevel 174) (2010-04-26 ea6db6a) (Java HotSpot(TM)
Client VM 1.6.0_19) [i386-java]
Loaded suite ./test_ruby_time_to_java
Started
..
Finished in 0.017 seconds.
2 tests, 2 assertions, 0 failures, 0 errors
% jruby-1.5.0.RC1 -wv ./test_ruby_time_to_java.rb
jruby 1.5.0.RC1 (ruby 1.8.7 patchlevel 249) (2010-04-14 0b08bc7) (Java
HotSpot(TM) Client VM 1.6.0_19) [i386-java]
Loaded suite ./test_ruby_time_to_java
Started
./test_ruby_time_to_java.rb:18 warning: multiple Java methods found for
argument types ([String]): [public java.text.SimpleDateFormat(java.lang.String)]
./test_ruby_time_to_java.rb:18 warning: multiple Java methods found for
argument types ([Time]): [public final java.lang.String
java.text.DateFormat.format(java.util.Date), public final java.lang.String
java.text.Format.format(java.lang.Object)]
..
Finished in 0.019 seconds.
2 tests, 2 assertions, 0 failures, 0 errors
% jruby-1.5.0.RC3 -wv ./test_ruby_time_to_java.rb
jruby 1.5.0.RC3 (ruby 1.8.7 patchlevel 249) (2010-05-04 603f15a) (Java
HotSpot(TM) Client VM 1.6.0_19) [i386-java]
Loaded suite ./test_ruby_time_to_java
Started
.F
Finished in 0.109 seconds.
1) Failure:
test_type_object(TestRubyTimeToJava) [./test_ruby_time_to_java.rb:12]:
<"java.util.Date"> expected but was
<"org.jruby.RubyTime">.
2 tests, 2 assertions, 1 failures, 0 errors
{noformat}
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