if (writtenValues != null) {
    for (String writtenFieldName: writtenFieldNames) {
        int attributeIndex = entityPersister.getEntityMetamodel().getPropertyIndex(writtenFieldName);
        if (attributeIndex >= 0) {
            entityPersister.setPropertyValue(target, attributeIndex, writtenValues[attributeIndex]);
        }
    }
    writtenFieldNames.clear();
}