Spring IDE: Project Error With ‘component-scan’ and “XML Parsing Problems Rule”

[phkoester]

When I activate the bean validator “XML Parsing Problems Rule,” I get project errors from Spring IDE: “Class is not assignable to [org.springframework.core.type.filter.TypeFilter]: com.acme.frob.ResourceFilter.”

This is what my ResourceFilter class looks like:

public class ResourceFilter implements TypeFilter {
    @Override
    public boolean match(MetadataReader metadataReader,
            MetadataReaderFactory metadataReaderFactory) throws IOException {
        AnnotationMetadata data = metadataReader.getAnnotationMetadata();
        return data.hasAnnotation(Resource.class.getName());
    }
}

This is the portion of the XML that the error points to:

<context:component-scan base-package="com.acme.frob">
    <context:include-filter expression="com.acme.frob.ResourceFilter" type="custom"/>
</context:component-scan>

Clearly my ResouceFilter class implements Spring’s TypeFilter—the fact that it works at run-time should be enough evidence.

This looks like yet another problem with different classes from different class loaders.

In earlier versions of the Spring IDE I had a different error message, but I still cannot activate this “XML Parsing Problems Rule” stuff. Deactivating that option is the only work-around I am aware of.

Cheers
—Phil

[Christian Dupuis]

Phil,

this has been fixed for the upcoming STS 2.2.0.RELEASE and Spring IDE 2.2.7.SR01 release which are being released early next week.

Christian

[phkoester]

That's good news, Christian.