hibernate/hibernate-orm · error · AnnotationException

error processing @AttributeBinderType annotation '%s' for at

Error message

error processing @AttributeBinderType annotation '%s' for attribute '%s' of entity type '%s'

What it means

Hibernate throws this AnnotationException while binding a property when a custom attribute binder registered through @AttributeBinderType fails. The exception only wraps the real failure: the original exception thrown inside your AttributeBinder.bind() implementation is attached as the cause. The message names the annotation, the attribute, and the entity.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/boot/model/internal/Binders.java:68

		}
		catch (Exception e) {
			throw new AnnotationException(
					"Error processing @TypeBinderType annotation '%s' for entity type '%s'"
							.formatted( annotation, entity.getClassName() ), e );
		}
	}

	static <A extends Annotation> void callPropertyBinder(
			Annotation annotation, Class<A> annotationType,
			PersistentClass entity, Property property,
			MetadataBuildingContext context) {
		try {
			propertyBinder( annotationType )
					.bind( annotationType.cast( annotation ),
							context, entity, property );
		}
		catch (Exception e) {
			throw new AnnotationException(
					"error processing @AttributeBinderType annotation '%s' for attribute '%s' of entity type '%s'"
							.formatted( annotation, property.getName(), entity.getClassName() ), e );
		}
	}

	private static <A extends Annotation> TypeBinder<A> typeBinder(Class<A> annotationType)
			throws Exception {
		final var binderType =
				annotationType.getAnnotation( TypeBinderType.class )
						.binder();
		checkImplementedTypeArgument( annotationType, binderType, TypeBinder.class );
		@SuppressWarnings("unchecked") // Safe, we just checked
		final var castBinderType = (Class<? extends TypeBinder<A>>) binderType;
		return castBinderType.getDeclaredConstructor().newInstance();
	}

	private static <A extends Annotation> AttributeBinder<A> propertyBinder(Class<A> annotationType)
					throws Exception {

View on GitHub (pinned to fad1729dce)

Solutions

Inspect the exception cause chain (getCause()) - the real failure is inside your AttributeBinder.bind() implementation
Step through the binder during Metadata build in a test to locate the failing line
Type-check property.getValue() (BasicValue vs association) inside the binder and throw a precise message for unsupported cases
Ensure the binder class has a public no-arg constructor and a generic argument matching the annotation

Example fix

// before
public class ValidityBinder implements AttributeBinder<ValidUntil> {
    public void bind(ValidUntil ann, MetadataBuildingContext ctx,
                     PersistentClass entity, Property property) {
        BasicValue value = (BasicValue) property.getValue(); // ClassCastException on associations
        value.setJpaAttributeConverter( ... );
    }
}

// after
public class ValidityBinder implements AttributeBinder<ValidUntil> {
    public void bind(ValidUntil ann, MetadataBuildingContext ctx,
                     PersistentClass entity, Property property) {
        if ( ! ( property.getValue() instanceof BasicValue basic ) ) {
            throw new IllegalArgumentException( "@ValidUntil only applies to basic attributes: "
                + entity.getClassName() + "." + property.getName() );
        }
        configure( basic, ann );
    }
}

Defensive patterns

Strategy: try-catch

Try / catch

try {
    SessionFactory sf = metadata.getSessionFactoryBuilder().build();
}
catch ( AnnotationException e ) {
    Throwable cause = e.getCause() != null ? e.getCause() : e;
    throw new IllegalStateException( "Custom @AttributeBinderType binder failed during bootstrap: "
        + cause.getMessage(), cause );
}

Prevention

Add a mapping smoke test covering every entity class that uses custom attribute annotations
instanceof-check property.getValue() in binders before casting; reject unsupported kinds with clear messages
Cover the binder with a direct unit test that passes a real Property and PersistentClass
Unwrap and read the cause chain whenever a binder wrapper error appears - the message alone never identifies the bug

When it happens

Trigger: A user-defined annotation meta-annotated with @AttributeBinderType is placed on a persistent attribute. During metadata building Binders.callPropertyBinder(Annotation, Class<A>, PersistentClass, Property, MetadataBuildingContext) instantiates the binder and calls bind(annotation, context, entity, property); any exception from bind() or binder instantiation is caught and rethrown wrapped in this message.

Common situations: The binder assumes a basic-valued property but receives an association or component; the binder mutates metadata that is not yet initialized at that binding stage; binder written against an older AttributeBinder signature; missing no-arg constructor.

Related errors

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/dd6af64a6ca9b986. Report an issue: GitHub.