hibernate/hibernate-orm · error · IllegalArgumentException

Embedded result mapping specified unknown attribute: {}

Error message

Embedded result mapping specified unknown attribute: {}

What it means

Error "Embedded result mapping specified unknown attribute: {}" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/query/results/internal/jpa/EntityBuilder.java:146

				throw new IllegalArgumentException(
						"No column name specified for embedded attribute selectable: "
								+ modelPart.getSelectable( i ).getSelectableName()
				);
			}
		}
		return List.of( columnNames );
	}

	private static void collectColumnNames(
			EmbeddedMapping<?, ?> embeddedMapping,
			ManagedMappingType embeddableMappingType,
			int offset,
			String[] columnNames) {
		for ( var memberMapping : embeddedMapping.fields() ) {
			final String memberName = memberName( memberMapping );
			final var attributeMapping = embeddableMappingType.findAttributeMapping( memberName );
			if ( attributeMapping == null ) {
				throw new IllegalArgumentException(
						"Embedded result mapping specified unknown attribute: " + memberName
				);
			}
			populateColumnNames(
					offset + getAttributeOffset( embeddableMappingType, memberName ),
					columnNames,
					memberMapping,
					memberName,
					attributeMapping
			);
		}
	}

	private static void populateColumnNames(
			int offset,
			String[] columnNames,
			MemberMapping<?> memberMapping,
			String memberName,

View on GitHub (pinned to fad1729dce)

Solutions

1. The embedded result mapping names an unknown attribute. Check the attribute exists on the embeddable.

When it happens

Trigger: A JPA result mapping for an embedded/identifier attribute is invalid: Embedded result mapping specified unknown attribute: <value>

Common situations: @SqlResultSetMapping/@MappingElement definitions referencing non-embedded attributes, missing column names, or duplicate member mappings.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/dcdd76272c2437d1. Report an issue: GitHub.