EntityMerger::merge

public function merge($seedID, $targID, Integrity\DuplicateCriterion $targCriterion)
{
	if(!is_int($seedID))
	{
		$seedID = (int)$seedID;
	}

	if(!is_int($targID))
	{
		$targID = (int)$targID;
	}

	$entityTypeID = $this->entityTypeID;
	if($this->enablePermissionCheck && !$this->userIsAdmin)
	{
		$userPermissions = $this->getUserPermissions();
		if(!$this->checkEntityReadPermission($seedID, $userPermissions))
		{
			throw new EntityMergerException($entityTypeID, $seedID, self::ROLE_SEED, EntityMergerException::READ_DENIED);
		}
		if(!$this->checkEntityDeletePermission($seedID, $userPermissions))
		{
			throw new EntityMergerException($entityTypeID, $seedID, self::ROLE_SEED, EntityMergerException::DELETE_DENIED);
		}
		if(!$this->checkEntityReadPermission($targID, $userPermissions))
		{
			throw new EntityMergerException($entityTypeID, $targID, self::ROLE_TARG, EntityMergerException::READ_DENIED);
		}
		if(!$this->checkEntityUpdatePermission($targID, $userPermissions))
		{
			throw new EntityMergerException($entityTypeID, $targID, self::ROLE_TARG, EntityMergerException::UPDATE_DENIED);
		}
	}

	$collisions = self::getMergeCollisions($seedID, $targID);

	$seed = $this->getEntityFields($seedID, self::ROLE_SEED);
	$targ = $this->getEntityFields($targID, self::ROLE_TARG);

	$entityFieldInfos = $this->getEntityFieldsInfo();
	$userFieldInfos = $this->getEntityUserFieldsInfo();

	$options = array('conflictResolutionMode' => $this->conflictResolutionMode);
	$this->innerMergeEntityFields($seed, $targ, $entityFieldInfos, false, $options);
	EntityMerger::mergeUserFields($seed, $targ, $userFieldInfos, $options);

	$matches = $this->getRegisteredEntityMatches($entityTypeID, $seedID);

	//region Merge requisites
	if ($entityTypeID === \CCrmOwnerType::Company || $entityTypeID === \CCrmOwnerType::Contact)
	{
		$requisiteMergingHelper = new RequisiteMergingHelper($entityTypeID, $seedID, $targID);
		$requisiteMergingHelper->merge();
	}
	//endregion Merge requisites

	$historyItems = null;
	if (isset($targ['HISTORY_ITEMS']))
	{
		$historyItems = $targ['HISTORY_ITEMS'];
		unset($targ['HISTORY_ITEMS']);
	}
	$this->updateEntity($targID, $targ, self::ROLE_TARG, array('DISABLE_USER_FIELD_CHECK' => true));

	if (is_array($historyItems))
	{
		$this->saveHistoryItems($targID, $historyItems);
	}

	$this->rebind($seedID, $targID);

	$targIndexTypeID = $targCriterion->getIndexTypeID();
	$targScope = $targCriterion->getScope();
	if(!isset($matches[$targIndexTypeID][$targScope]))
	{
		$matches[$targIndexTypeID][$targScope] = array();
	}

	$targetMatchHash = $targCriterion->getMatchHash();
	if(!isset($matches[$targIndexTypeID][$targScope][$targetMatchHash]))
	{
		$matches[$targIndexTypeID][$targScope][$targetMatchHash] = $targCriterion->getMatches();
	}

	$this->deleteEntity($seedID, self::ROLE_SEED, array('ENABLE_DUP_INDEX_INVALIDATION' => false));
	if(!empty($matches))
	{
		$this->processEntityDeletion($entityTypeID, $seedID, $matches);
	}

	Integrity\DuplicateManager::markDuplicateIndexAsJunk($entityTypeID, $seedID);

	//region Send event
	$event = new Main\Event(
		'crm',
		'OnAfterEntityMerge',
		array(
			'entityTypeID' => $this->entityTypeID,
			'entityTypeName' => \CCrmOwnerType::ResolveName($this->entityTypeID),
			'seedEntityID'  => $seedID,
			'targetEntityID' => $targID,
			'userID' => $this->getUserID()
		)
	);
	$event->send();
	//endregion

	if(!empty($collisions))
	{
		$messageFields = $this->prepareCollisionMessageFields($collisions, $seed, $targ);
		if(is_array($messageFields) && !empty($messageFields) && Main\Loader::includeModule('im'))
		{
			$messageFields['FROM_USER_ID'] = $this->userID;
			$messageFields['MESSAGE_TYPE'] = IM_MESSAGE_SYSTEM;
			$messageFields['NOTIFY_TYPE'] = IM_NOTIFY_FROM;
			$messageFields['NOTIFY_MODULE'] = 'crm';
			$messageFields['NOTIFY_EVENT'] = 'merge';
			$messageFields['NOTIFY_TAG'] = 'CRM|MERGE|COLLISION';

			\CIMNotify::Add($messageFields);
		}
	}
}