[
https://issues.apache.org/jira/browse/TAP5-729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ulrich Stärk updated TAP5-729:
------------------------------
Labels: bulk-close-candidate (was: )
This issue has been last updated more than 1.5 years ago, has no assignee,
affects an old version of Tapestry that is not actively developed anymore, and
is therefore prone to be bulk-closed in the near future.
If the issue still persists with the most recent development preview of
Tapestry, please update it as soon as possible. In the case of a feature
request, please discuss it with the Tapestry developer community on the
d...@tapestry.apache.org mailing list first.
> Tapestry IOC proxies have incorrect implementation when interface method uses
> a covariant return type (causes AbstractMethodError)
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: TAP5-729
> URL: https://issues.apache.org/jira/browse/TAP5-729
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-ioc
> Affects Versions: 5.1.0.5
> Reporter: Paul Field
> Labels: bulk-close-candidate
>
> Here's a Junit 3 test case to demonstrate:
> import junit.framework.TestCase;
> import org.apache.tapestry5.ioc.Registry;
> import org.apache.tapestry5.ioc.RegistryBuilder;
> import org.apache.tapestry5.ioc.ServiceBinder;
> public class ProxyText extends TestCase {
> private Registry registry;
> @Override
> protected void setUp() throws Exception {
> RegistryBuilder builder = new RegistryBuilder();
> builder.add(AppModule.class);
> registry = builder.build();
> registry.performRegistryStartup();
> }
> public void testRegistryWorks() {
> assertEquals(new Integer(1),
> registry.getService(SuperIFace.class).get());
> }
> public static class AppModule {
> public static void bind(ServiceBinder binder) {
> binder.bind(IFace.class, Impl.class);
> }
> }
> public interface SuperIFace {
> Number get();
> }
> public interface IFace extends SuperIFace {
> Integer get();
> }
> public static class Impl implements IFace {
> public Integer get() {
> return 1;
> }
> }
> }
> -----
> The result is:
> java.lang.AbstractMethodError: $IFace_1218d10684a.get()Ljava/lang/Number;
> Note that if you change SuperIFace to:
> public interface SuperIFace {
> Integer get();
> }
> the test works - demonstrating that the problem is to do with the use of a
> covariant return type in IFace.
> BTW, this has turned up in code for testing where I want to create
> sub-interfaces that provide additional testing facilities for fake services
> and I need to control the particular types that are returned by the fake
> implementation.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
