public function mapChild(array $mapping, ClassMetadata $inherited = null)
{
if (empty($mapping['cascade'])) {
$mapping['cascade'] = 0;
}
$mapping['type'] = 'child';
$mapping = $this->validateAndCompleteFieldMapping($mapping, $inherited, false, 'nodeName');
if ($exception = $this->isValidNodename($mapping['nodeName'])) {
throw MappingException::illegalChildName($this->name, $mapping['fieldName'], $mapping['nodeName'], $exception);
}
$this->childMappings[$mapping['fieldName']] = $mapping['fieldName'];
}
