hibernate/hibernate-orm · error · CompositeValueGenerationException

Generated column values were not provided for composite attr

Error message

Generated column values were not provided for composite attribute: {}.{}

What it means

Error "Generated column values were not provided for composite attribute: {}.{}" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/generator/internal/CompositeGeneratorBuilder.java:134

			}
			if ( generator instanceof OnExecutionGenerator onExecutionGenerator
					&& generator.generatedOnExecution() ) {
				final var generatorEventTypes = generator.getEventTypes();
				for ( var eventType : eventTypes ) {
					final var details = columnValueDetailsByEvent.get( eventType );
					if ( details != null ) {
						if ( generatorEventTypes.contains( eventType ) ) {
							if ( !onExecutionGenerator.referenceColumnsInSql( dialect, eventType ) ) {
								details.excludeColumns( columnIndex, span );
							}
							else if ( onExecutionGenerator.writePropertyValue( eventType ) ) {
								// leave the default parameter marker values in place
							}
							else {
								final String[] referencedColumnValues =
										onExecutionGenerator.getReferencedColumnValues( dialect, eventType );
								if ( referencedColumnValues == null ) {
									throw new CompositeValueGenerationException(
											"Generated column values were not provided for composite attribute: "
											+ mappingProperty.getName() + '.' + property.getName()
									);
								}
								if ( referencedColumnValues.length != span ) {
									throw new CompositeValueGenerationException(
											"Mismatch between number of collected generated column values and number of columns for composite attribute: "
											+ mappingProperty.getName() + '.' + property.getName()
									);
								}
								details.setColumnValues( columnIndex, referencedColumnValues );
							}
						}
						else if ( !onExecutionGenerator.allowMutation() ) {
							details.excludeColumns( columnIndex, span );
						}
					}
				}

View on GitHub (pinned to fad1729dce)

Solutions

1. Ensure every generated column of the composite attribute has @Generated or a matching generator so values are produced.
2. Check the composite attribute mapping so that the set of generated columns matches what the generator provides.

When it happens

Trigger: Thrown when a composite attribute with generated columns receives no generated values from the database.

Common situations: Typical situations: the driver/database not returning generated values for all columns of the composite; partial generation metadata in the mapping.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/f97690a755c72cd8. Report an issue: GitHub.