[hibernate-issues] [Hibernate-JIRA] Created: (ANN-612) JavaReflectionManager fails with generic types like MyGenericType<Object[]>

[Aleksei Valikov (JIRA)]

JavaReflectionManager fails with generic types like MyGenericType<Object[]>
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                 Key: ANN-612
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-612
             Project: Hibernate Annotations
          Issue Type: Bug
    Affects Versions: 3.3.0.ga
         Environment: I'm using the latest versions:

Hibernate 3.2.4.ga
Hibernate Entity Manager 3.3.1.ga
Hibernate Commons Annotations 3.0.0.ga
Hibernate Validator 3.0.0.ga
JBoss Archive Browsing 2.0.2.alpha
            Reporter: Aleksei Valikov
         Attachments: C.java

I have a property of generic type with an array parameter like this one:

	public static class J<T> {}

	private J<Object[]> e;

	@Transient
	public J<Object[]> getE() {
		return e;
	}

	public void setE(J<Object[]> e) {
		this.e = e;
	}

When starting the entity manager, I get the following exception:

javax.persistence.PersistenceException: java.lang.IllegalArgumentException: No PropertyTypeExtractor available for type void 
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:258)
	at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:120)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
	at org.jvnet.hyperjaxb3.ejb.test.AbstractEntityManagerTest.createEntityManagerFactory(AbstractEntityManagerTest.java:85)
	at org.jvnet.hyperjaxb3.ejb.test.AbstractEntityManagerTest.setUp(AbstractEntityManagerTest.java:44)
	at junit.framework.TestCase.runBare(TestCase.java:125)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.IllegalArgumentException: No PropertyTypeExtractor available for type void 
	at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.toXType(JavaReflectionManager.java:164)
	at org.hibernate.annotations.common.reflection.java.JavaXProperty.create(JavaXProperty.java:20)
	at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.getXProperty(JavaReflectionManager.java:117)
	at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredMethodProperties(JavaXClass.java:91)
	at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredProperties(JavaXClass.java:106)
	at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredProperties(JavaXClass.java:98)
	at org.hibernate.cfg.AnnotationBinder.addElementsOfAClass(AnnotationBinder.java:984)
	at org.hibernate.cfg.AnnotationBinder.getElementsToProcess(AnnotationBinder.java:833)
	at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:645)
	at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:498)
	at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:277)
	at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1115)
	at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1269)
	at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:150)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:888)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:186)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:246)
	... 17 more


The following property makes no problem:

	private J<Object> f;

	@Transient
	public J<Object> getF() {
		return f;
	}

	public void setF(J<Object> f) {
		this.f = f;
	}

So I believe it's the arrayd type which is problematic.

>From the stack trace, I believe the problem is with hibernate-commons-annotations.

I also attach the class that reproduces the problem.

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