hibernate/hibernate-orm · error · UnsupportedOperationException

AnyType support has not yet been implemented

Error message

AnyType support has not yet been implemented

What it means

Error "AnyType support has not yet been implemented" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/MappingModelCreationHelper.java:1890

					declaringType,
					declaringEntityPersister,
					propertyAccess
			) );

			creationProcess.registerForeignKeyPostInitCallbacks(
					"To-one key - " + navigableRole,
					() -> MappingModelCreationHelper.interpretToOneKeyDescriptor(
							attributeMapping,
							bootProperty,
							(ToOne) bootProperty.getValue(),
							null,
							creationProcess
					)
			);
			return attributeMapping;
		}
		else {
			throw new UnsupportedOperationException( "AnyType support has not yet been implemented" );
		}
	}

	private static FetchTiming fetchTiming(Property bootProperty, ManagedMappingType declaringType, ToOne value, EntityPersister entityPersister, FetchStyle fetchStyle, AssociationType type, SessionFactoryImplementor sessionFactory) {
		final String role = declaringType.getNavigableRole().toString() + "." + bootProperty.getName();
		final boolean lazy = value.isLazy();
		if ( lazy && entityPersister.getBytecodeEnhancementMetadata().isEnhancedForLazyLoading() ) {
			if ( value.isUnwrapProxy() ) {
				return determineFetchTiming( fetchStyle, type, lazy, role, sessionFactory );
			}
			else if ( value instanceof ManyToOne manyToOne && value.isNullable() && manyToOne.isIgnoreNotFound() ) {
				return FetchTiming.IMMEDIATE;
			}
			else {
				return determineFetchTiming( fetchStyle, type, lazy, role, sessionFactory );
			}
		}
		else if ( !lazy

View on GitHub (pinned to fad1729dce)

Solutions

1. Avoid @Any mappings in this context (e.g. inside the affected model part); use a standard many-to-one or inheritance mapping instead.

When it happens

Trigger: Thrown when mapping model creation reaches an AnyType usage in a context where any-type support has not been implemented.

Common situations: See trigger scenarios.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/d9e6e02e3538b1b9. Report an issue: GitHub.