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AnnotationFormatError: what does it means and how to solve it? [message #635554]

Wed, 27 October 2010 10:45

guofeng zhang

Messages: 49
Registered: July 2009

Member

One bundle defined an interface:

@Repository
public interface HelloWorldRepository extends ReadWriteJpaRepository<HelloWorld, Long> {

	@GenericQuery(query = "select e from HelloWorld e")
	public List<HelloWorld> listAll();
	
}

By using Sping AOP introduction, this interface is add some implementation and published as service:

   <bean id="repositoryFactory" class="org.codehaus.grepo.query.jpa.repository.JpaRepositoryFactoryBean" abstract="true" >
       <property name="entityManagerFactory" ref="entityManagerFactory" />
   </bean>
   
   <bean id="helloWorldRepositoryBean" parent="repositoryFactory">
       <property name="proxyClass" value="org.planner.repository.member.HelloWorldRepository" />
   </bean>
    <service id="helloWorldRepository"
             ref="helloWorldRepositoryBean"
             interface="org.planner.repository.member.HelloWorldRepository" />

Another bundle reference this service:

   <reference id="helloWorldRepositoryrRef" interface="org.planner.repository.member.HelloWorldRepository" />

But an error displayed says that helloWorldRepositoryrRef cannot be created:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'helloWorldRepositoryrRef': Post-processing of the FactoryBean's object failed; nested exception is java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.codehaus.grepo.query.commons.annotation.GenericQuery.resultConverter()
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:165)
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1414)
......

Where resultConverter is a element in GenericQuery.

If I removed the annonation from the listAll() method, it works without any error.

I donot know what cause it, and how to solve it.

Your help is appreciated.

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Re: AnnotationFormatError: what does it means and how to solve it? [message #635841 is a reply to message #635554]

Thu, 28 October 2010 10:48

guofeng zhang

Messages: 49
Registered: July 2009

Member

I made some test.

First in my bundle I defined:

public interface UserRepository //extends ReadWriteJpaRepository<User, Long> 
{
    @GenericQuery
    User getByUsername(String username);
}

I added the following code to my bundle's Activator:

				try
				{					 
			    	 Class c = UserRepository.class ;
			    	 AnnotatedElement elem = c.getMethod("getByUsername", String.class);
			    	 LOGGER.info( "---get-annotation---" ) ;
			    	 GenericQuery ann = elem.getAnnotation(GenericQuery.class);
			    	 LOGGER.info( "---annotation---: " + ann ) ;
				} catch (Throwable t )
				{
				    t.printStackTrace() ;
				}

Only GenericQuery is defined in another bundle provided by the third party.

I got the following similar error:

org.planner.service.member.management.impltest.Activator          ---get-annotation--- 
System.err                                                        java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.codehaus.grepo.query.commons.annotation.GenericQuery.resultConverter() 
System.err                                                        	at java.lang.reflect.Method.getDefaultValue(Method.java:726) 
System.err                                                        	at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:99) 
System.err                                                        	at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:66) 
System.err                                                        	at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:202) 
System.err                                                        	at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69) 
System.err                                                        	at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52) 
System.err                                                        	at java.lang.reflect.Method.declaredAnnotations(Method.java:693) 
System.err                                                        	at java.lang.reflect.Method.getAnnotation(Method.java:679) 
System.err                                                        	at org.planner.service.member.management.impltest.Activator$1.run(Activator.java:46) 
System.err                                                        	at java.lang.Thread.run(Thread.java:619)

If I only copy the GenericQuery to my bundle, the above code worked. It returned:
@org.codehaus.grepo.query.commons.annotation.GenericQuery(re sultConverter=class org.codehaus.grepo.core.converter.PlaceHolderResultConverter , queryGenerator=class org.codehaus.grepo.query.commons.generator.PlaceHolderQueryG enerator, firstResult=-1, resultValidator=class org.codehaus.grepo.core.validator.PlaceHolderResultValidator , queryName=, query=, queryExecutor=class org.codehaus.grepo.query.commons.executor.PlaceHolderQueryEx ecutor, maxResults=-1, isNativeQuery=false)

I do not know why it works in the late case.

Could any one kind give me some advice?

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Re: AnnotationFormatError: what does it means and how to solve it? [message #636059 is a reply to message #635841]

Fri, 29 October 2010 08:23

guofeng zhang

Messages: 49
Registered: July 2009

Member

This issue is solved.

The third party bundle does not export "org.codehaus.grepo.query.commons.annotation". Exporting this package solved this issue.

I thought this might be class loader issue because it worked in standalone application, it would be easier to figure it out if the error message could indicate directly by NoClassDefFoundError.

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