/**
  * @param array $mapping
  * @param ClassMetadata $inherited same field of parent object, if any
  * @param bool $isField whether this is a field or an association
  * @param string $phpcrLabel the name for the phpcr thing. usually property,
  *                                  except for child where this is name. referrers
  *                                  use false to not set anything.
  *
  * @throws \Doctrine\ORM\ODMAdapter\Exception\MappingException
  * @throws MappingException
  * @return mixed
  */
 protected function validateAndCompleteFieldMapping(array $mapping, ClassMetadata $inherited = null, $isField = true, $phpcrLabel = 'property')
 {
     if (empty($mapping['fieldName'])) {
         throw new MappingException("Mapping a property requires to specify the name in '{$this->className}'.");
     }
     if (!is_string($mapping['fieldName'])) {
         throw new MappingException("Attribute name must be of type string in '{$this->className}'.");
     }
     if (!$this->reflectionClass->hasProperty($mapping['fieldName'])) {
         throw MappingException::classHasNoField($this->className, $mapping['fieldName']);
     }
     if (empty($mapping['property'])) {
         $mapping['property'] = $mapping['fieldName'];
     }
     if ($phpcrLabel && (!isset($mapping[$phpcrLabel]) || empty($mapping[$phpcrLabel]))) {
         $mapping[$phpcrLabel] = $mapping['fieldName'];
     }
     if (isset($this->mappings[$mapping['fieldName']])) {
         if (!$isField || empty($mapping['type']) || empty($this->mappings[$mapping['fieldName']]) || $this->mappings[$mapping['fieldName']]['type'] !== $mapping['type']) {
             throw MappingException::duplicateFieldMapping($this->className, $mapping['fieldName']);
         }
     }
     if (!isset($mapping['type'])) {
         throw MappingException::missingTypeDefinition($this->className, $mapping['fieldName']);
     }
     if ($mapping['type'] === 'int') {
         $mapping['type'] = 'long';
     } elseif ($mapping['type'] === 'float') {
         $mapping['type'] = 'double';
     }
     $reflProp = $this->reflectionClass->getProperty($mapping['fieldName']);
     $reflProp->setAccessible(true);
     $this->reflectionFields[$mapping['fieldName']] = $reflProp;
     $this->mappings[$mapping['fieldName']] = $mapping;
     return $mapping;
 }