Model::setAttributes

private function setAttributes(array $attributes, $parentEntity)
{
	foreach ($attributes as $key => $value)
	{
		if ($value === null)
		{
			unset($attributes[$key]);
		}
	}
	if (!$parentEntity)
	{
		$mapAttributes = static::getMapAttributes();
		foreach ($attributes as $key => $value)
		{
			if (!empty($mapAttributes[$key]))
			{
				$this->{$mapAttributes[$key]} = $value;
				$this->currentDbState[$key] = $value;
				unset($attributes[$key]);
			}
		}
		$parentEntity = $this;
	}

	if (empty($attributes))
	{
		return $parentEntity;
	}

	$subEntitiesMapAttributes = static::getMapReferenceAttributes();
	$subEntitiesKeys = array_keys($subEntitiesMapAttributes);


	$subEntityAttributes = array();
	$loadedSubEntitiesKeys = array();
	foreach ($attributes as $key => $value)
	{
		$delimiter = self::ATTRIBUTE_SLICE_DELIMITER;
		$selectedAttributeParts = explode($delimiter, $key);
		if (count($selectedAttributeParts) == 2 && in_array($selectedAttributeParts[0], $subEntitiesKeys))
		{
			$loadedSubEntitiesKeys[$selectedAttributeParts[0]] = $selectedAttributeParts[0];
			$subEntityAttributes[$selectedAttributeParts[0]][$selectedAttributeParts[1]] = $value;
		}
		elseif (count($selectedAttributeParts) >= 2)
		{
			$nestedEntityParentKey = array_shift($selectedAttributeParts);
			$nestedElementKey = implode(self::ATTRIBUTE_SLICE_DELIMITER, $selectedAttributeParts);
			$subEntityAttributes[$nestedEntityParentKey][$nestedElementKey] = $value;
		}
	}

	foreach ($subEntityAttributes as $key => $validAttributes)
	{
		if (!empty($subEntitiesMapAttributes[$key]))
		{
			/** @var static $targetEntityClass */
			$targetEntityClass = $subEntitiesMapAttributes[$key]['targetEntity'];
			if ($subEntitiesMapAttributes[$key]['type'] != Common::MANY_TO_ONE)
			{
				if (!isset($parentEntity->{$key}[$validAttributes['ID']]))
				{
					$subEntity = $targetEntityClass::buildFromArray($validAttributes);

					$nestedEntityReferenceMap = $subEntity::getMapReferenceAttributes();


					/**
					 * If connection type is one to many we can map to nested parent entity automatically
					 */
					if ($subEntitiesMapAttributes[$key]['type'] == Common::ONE_TO_MANY)
					{
						if (!empty($nestedEntityReferenceMap[$subEntitiesMapAttributes[$key]['mappedBy']]))
						{
							$subEntity->{$subEntitiesMapAttributes[$key]['mappedBy']} = $parentEntity;
						}
					}
					$parentEntity->{$key}[$subEntity->id] = $subEntity;
				}
				else
				{
					$targetEntityClass::buildFromArray($validAttributes, $parentEntity->{$key}[$validAttributes['ID']]);
				}
			}
			else
			{
				$subEntity = $targetEntityClass::buildFromArray($validAttributes);
				$parentEntity->{$key} = $subEntity;
			}

		}
	}


	return $parentEntity;
}