owncloud / core

	 * @param Account $a

	 * @param UserInterface $backend

	 */

	private function syncDisplayName(Account $a, UserInterface $backend) {

		$uid = $a->getUserId();

		if ($backend instanceof IProvidesDisplayNameBackend || $backend->implementsActions(\OC_User_Backend::GET_DISPLAYNAME)) {

			$displayName = $backend->getDisplayName($uid);

			$a->setDisplayName($displayName);

			if (\array_key_exists('displayName', $a->getUpdatedFields())) {

				$this->logger->debug(

					"Setting displayName for <$uid> to <$displayName>", ['app' => self::class]

				);

			}

		}

	}

	/**

	 * TODO store username in account table instead of user preferences

	 * @param Account $a

	 * @param UserInterface $backend

	 */

	private function syncSearchTerms(Account $a, UserInterface $backend) {

		$uid = $a->getUserId();

		if ($backend instanceof IProvidesExtendedSearchBackend) {

			$searchTerms = $backend->getSearchTerms($uid);

			$a->setSearchTerms($searchTerms);

			if ($a->haveTermsChanged()) {

				$logTerms = \implode('|', $searchTerms);

				$this->logger->debug(

					"Setting searchTerms for <$uid> to <$logTerms>", ['app' => self::class]

				);

			}

		}

	}

	/**

	 * @param Account $a