0004467: Resin unable to compile typed interfaces for stateless session beans

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Category

Severity

Reproducibility

Date Submitted

Last Update

0004467

[Resin]

major

always

03-30-11 07:10

04-04-11 18:04

Reporter

andreaskaltenbach

View Status

public

Assigned To

emil

Priority

normal

Resolution

unable to reproduce

Status

closed

Product Version

4.0.16

Summary

0004467: Resin unable to compile typed interfaces for stateless session beans

Description

Assume the following setup:

public interface Importer<T> {
void doImport(T t);
}

@Stateless
public ImporterImpl implements Importer<String> {
public void doImport(String t);
}

---

When setting up the EJBs, Resin fails with the following message:

java.lang.IllegalStateException: AnnotatedMethodImpl[public abstract void Importer.doImport(java.lang.Object)] does not have a matching base method in {1}

Internally, AnnotatedTypeUtil compares the two parameter lists but returns that doImport(T t) and doImport(String t) do not match. Reason is that a comparison of the java.lang.Class 'String' with a java.lang.reflect.TypeVariable is done (AnnotatedTypeUtil.isMatch(List<AnnotatedParameter<?>>, List<AnnotatedParameter<?>>)). Instead for comparing those types, the TypeVariable's bounds have to compared.

A workaround is to not use typed interfaces, but this a big limitiation in designing services.

Additional Information

Full stack trace:

at com.caucho.ejb.gen.SessionGenerator.introspectMethod(SessionGenerator.java:244)
                                   at com.caucho.ejb.gen.SessionGenerator.introspectType(SessionGenerator.java:226)
                                   at com.caucho.ejb.gen.SessionGenerator.introspect(SessionGenerator.java:206)
                                   at com.caucho.ejb.gen.StatelessGenerator.introspect(StatelessGenerator.java:177)
                                   at com.caucho.ejb.session.AbstractSessionManager.bind(AbstractSessionManager.java:251)
                                   at com.caucho.ejb.manager.EjbManager.bind(EjbManager.java:540)
                                   at com.caucho.ejb.manager.EjbManager.environmentBind(EjbManager.java:662)
                                   at com.caucho.loader.EnvironmentClassLoader.bind(EnvironmentClassLoader.java:864)
                                   at com.caucho.loader.EnvironmentClassLoader.start(EnvironmentClassLoader.java:883)
                                   at com.caucho.server.webapp.WebApp.start(WebApp.java:3109)
                                   at com.caucho.env.deploy.DeployController.startImpl(DeployController.java:630)
                                   at com.caucho.env.deploy.StartAutoRedeployAutoStrategy.startOnInit(StartAutoRedeployAutoStrategy.java:77)
                                   at com.caucho.env.deploy.DeployController.startOnInit(DeployController.java:493)
                                   at com.caucho.env.deploy.DeployContainer.start(DeployContainer.java:171)
                                   at com.caucho.server.webapp.WebAppContainer.start(WebAppContainer.java:713)
                                   at com.caucho.server.host.Host.start(Host.java:676)
                                   at com.caucho.env.deploy.DeployController.startImpl(DeployController.java:630)
                                   at com.caucho.env.deploy.StartAutoRedeployAutoStrategy.startOnInit(StartAutoRedeployAutoStrategy.java:77)
                                   at com.caucho.env.deploy.DeployController.startOnInit(DeployController.java:493)
                                   at com.caucho.env.deploy.DeployContainer.start(DeployContainer.java:171)
                                   at com.caucho.server.host.HostContainer.start(HostContainer.java:542)
                                   at com.caucho.server.cluster.Server.start(Server.java:1225)
                                   at com.caucho.server.cluster.ServletService.start(ServletService.java:72)
                                   at com.caucho.env.service.ResinSystem.startServices(ResinSystem.java:508)
                                   at com.caucho.env.service.ResinSystem.start(ResinSystem.java:476)
                                   at com.caucho.server.resin.Resin.start(Resin.java:892)
                                   at com.caucho.server.resin.Resin.initMain(Resin.java:1020)
                                   at com.caucho.server.resin.Resin.main(Resin.java:1297)
                                   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                                   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
                                   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
                                   at java.lang.reflect.Method.invoke(Method.java:597)

Attached Files

quickfix_for_resin_issue_#4467.patch [^] (19,799 bytes) 03-01-11 06:29

Relationships

Notes
(0005144) andreaskaltenbach 03-01-11 06:30	Uploaded a quickfix: -differentiate between generic types and ordinary types -identify all matching method candidates and return the closest one (the one which has a more narrow type parameter than java.lang.Object).

(0005149) ferg 04-04-11 17:50	ejb/40c4 This example works fine with 4.0.16. There must be some other difference in the test (for example different classloaders, .jar vs .ear etc.) The proposed patch is incorrect.

Issue History
Date Modified	Username	Field	Change
03-30-11 07:10	andreaskaltenbach	New Issue
03-30-11 07:21	andreaskaltenbach	Note Added: 0005142
03-01-11 06:28	andreaskaltenbach	Note Deleted: 0005142
03-01-11 06:29	andreaskaltenbach	File Added: quickfix_for_resin_issue_#4467.patch
03-01-11 06:30	andreaskaltenbach	Note Added: 0005144
04-04-11 17:50	ferg	Note Added: 0005149
04-04-11 17:50	ferg	Assigned To	=> emil
04-04-11 17:50	ferg	Status	new => assigned
04-04-11 17:50	ferg	Resolution	open => unable to reproduce
04-04-11 18:04	ferg	Status	assigned => closed

Mantis 1.0.0rc3[^]

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