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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2002-2008 (original work) Public Research Centre Henri Tudor & University of Luxembourg |
| 19 | * (under the project TAO & TAO2); |
| 20 | * 2008-2010 (update and modification) Deutsche Institut für Internationale Pädagogische Forschung |
| 21 | * (under the project TAO-TRANSFER); |
| 22 | * 2009-2012 (update and modification) Public Research Centre Henri Tudor |
| 23 | * (under the project TAO-SUSTAIN & TAO-DEV); |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | use oat\oatbox\service\ConfigurableService; |
| 28 | use oat\generis\model\kernel\uri\UriProvider; |
| 29 | use oat\generis\model\kernel\uri\UriProviderException; |
| 30 | |
| 31 | /** |
| 32 | * UriProvider implementation based on a serial stored in the database. |
| 33 | * |
| 34 | * @access public |
| 35 | * @author Jerome Bogaerts, <jerome.bogaerts@tudor.lu> |
| 36 | * @package generis |
| 37 | */ |
| 38 | class core_kernel_uri_DatabaseSerialUriProvider extends ConfigurableService implements UriProvider |
| 39 | { |
| 40 | public const OPTION_PERSISTENCE = 'persistence'; |
| 41 | |
| 42 | public const OPTION_NAMESPACE = 'namespace'; |
| 43 | // --- ASSOCIATIONS --- |
| 44 | |
| 45 | // --- ATTRIBUTES --- |
| 46 | |
| 47 | // --- OPERATIONS --- |
| 48 | |
| 49 | /** |
| 50 | * @return common_persistence_SqlPersistence |
| 51 | */ |
| 52 | public function getPersistence() |
| 53 | { |
| 54 | return common_persistence_SqlPersistence::getPersistence($this->getOption(self::OPTION_PERSISTENCE)); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Generates a URI based on a serial stored in the database. |
| 59 | * |
| 60 | * @access public |
| 61 | * @author Jerome Bogaerts, <jerome.bogaerts@tudor.lu> |
| 62 | * @return string |
| 63 | * @throws UriProviderException |
| 64 | */ |
| 65 | public function provide() |
| 66 | { |
| 67 | $returnValue = (string) ''; |
| 68 | try { |
| 69 | $sth = $this->getPersistence()->query( |
| 70 | $this->getPersistence()->getPlatForm()->getSqlFunction("generis_sequence_uri_provider"), |
| 71 | [$this->getOption(self::OPTION_NAMESPACE)] |
| 72 | ); |
| 73 | |
| 74 | if ($sth !== false) { |
| 75 | $row = $sth->fetch(); |
| 76 | |
| 77 | $returnValue = current($row); |
| 78 | $sth->closeCursor(); |
| 79 | } else { |
| 80 | throw new UriProviderException( |
| 81 | "An error occured while calling the stored procedure for persistence " |
| 82 | . $this->getOption(self::OPTION_PERSISTENCE) . "." |
| 83 | ); |
| 84 | } |
| 85 | } catch (Exception $e) { |
| 86 | throw new UriProviderException("An error occured while calling the stored ': " . $e->getMessage() . "."); |
| 87 | } |
| 88 | |
| 89 | return (string) $returnValue; |
| 90 | } |
| 91 | } |