chamilo /
chamilo-lms
| Total Complexity | 87 |
| Total Lines | 725 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Database often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Database, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 15 | class Database |
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| 16 | { |
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| 17 | /** |
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| 18 | * @var EntityManager |
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| 19 | */ |
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| 20 | private static $em; |
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| 21 | private static $connection; |
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| 22 | |||
| 23 | /** |
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| 24 | * Setup doctrine for the installation. |
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| 25 | * |
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| 26 | * @param array $params |
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| 27 | * @param string $entityRootPath |
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| 28 | */ |
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| 29 | public function connect($params = [], $entityRootPath = '') |
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| 30 | { |
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| 31 | $config = self::getDoctrineConfig($entityRootPath); |
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| 32 | $config->setAutoGenerateProxyClasses(true); |
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| 33 | $config->setEntityNamespaces( |
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| 34 | [ |
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| 35 | 'ChamiloCoreBundle' => 'Chamilo\CoreBundle\Entity', |
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| 36 | 'ChamiloCourseBundle' => 'Chamilo\CourseBundle\Entity', |
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| 37 | ] |
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| 38 | ); |
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| 39 | |||
| 40 | $params['charset'] = 'utf8'; |
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| 41 | $sysPath = api_get_path(SYMFONY_SYS_PATH); |
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| 42 | |||
| 43 | $cache = new Doctrine\Common\Cache\ArrayCache(); |
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| 44 | // standard annotation reader |
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| 45 | $annotationReader = new Doctrine\Common\Annotations\AnnotationReader(); |
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| 46 | $cachedAnnotationReader = new Doctrine\Common\Annotations\CachedReader( |
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| 47 | $annotationReader, // use reader |
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| 48 | $cache // and a cache driver |
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| 49 | ); |
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| 50 | |||
| 51 | $evm = new \Doctrine\Common\EventManager(); |
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| 52 | $timestampableListener = new Gedmo\Timestampable\TimestampableListener(); |
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| 53 | $timestampableListener->setAnnotationReader($cachedAnnotationReader); |
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| 54 | $evm->addEventSubscriber($timestampableListener); |
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| 55 | |||
| 56 | $driverChain = new \Doctrine\Persistence\Mapping\Driver\MappingDriverChain(); |
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| 57 | // load superclass metadata mapping only, into driver chain |
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| 58 | // also registers Gedmo annotations.NOTE: you can personalize it |
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| 59 | Gedmo\DoctrineExtensions::registerAbstractMappingIntoDriverChainORM( |
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| 60 | $driverChain, // our metadata driver chain, to hook into |
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| 61 | $cachedAnnotationReader // our cached annotation reader |
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| 62 | ); |
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| 63 | |||
| 64 | AnnotationRegistry::registerLoader( |
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| 65 | function ($class) use ($sysPath) { |
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| 66 | $file = str_replace("\\", DIRECTORY_SEPARATOR, $class).".php"; |
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| 67 | $file = str_replace('Symfony/Component/Validator', '', $file); |
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| 68 | $file = str_replace('Symfony\Component\Validator', '', $file); |
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| 69 | $file = str_replace('Symfony/Component/Serializer', '', $file); |
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| 70 | |||
| 71 | $fileToInclude = $sysPath.'vendor/symfony/validator/'.$file; |
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| 72 | |||
| 73 | if (file_exists($fileToInclude)) { |
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| 74 | // file exists makes sure that the loader fails silently |
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| 75 | require_once $fileToInclude; |
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| 76 | |||
| 77 | return true; |
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| 78 | } |
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| 79 | |||
| 80 | $fileToInclude = $sysPath.'vendor/symfony/validator/Constraints/'.$file; |
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| 81 | if (file_exists($fileToInclude)) { |
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| 82 | // file exists makes sure that the loader fails silently |
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| 83 | require_once $fileToInclude; |
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| 84 | |||
| 85 | return true; |
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| 86 | } |
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| 87 | |||
| 88 | $fileToInclude = $sysPath.'vendor/symfony/serializer/'.$file; |
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| 89 | |||
| 90 | if (file_exists($fileToInclude)) { |
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| 91 | // file exists makes sure that the loader fails silently |
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| 92 | require_once $fileToInclude; |
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| 93 | |||
| 94 | return true; |
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| 95 | } |
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| 96 | } |
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| 97 | ); |
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| 98 | |||
| 99 | AnnotationRegistry::registerFile( |
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| 100 | $sysPath.'vendor/api-platform/core/src/Annotation/ApiResource.php' |
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| 101 | ); |
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| 102 | AnnotationRegistry::registerFile( |
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| 103 | $sysPath.'vendor/api-platform/core/src/Annotation/ApiFilter.php' |
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| 104 | ); |
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| 105 | AnnotationRegistry::registerFile( |
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| 106 | $sysPath.'vendor/api-platform/core/src/Annotation/ApiProperty.php' |
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| 107 | ); |
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| 108 | AnnotationRegistry::registerFile( |
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| 109 | $sysPath.'vendor/api-platform/core/src/Annotation/ApiSubresource.php' |
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| 110 | ); |
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| 111 | |||
| 112 | $entityManager = EntityManager::create($params, $config, $evm); |
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| 113 | |||
| 114 | if (false === Type::hasType('uuid')) { |
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| 115 | Type::addType('uuid', \Symfony\Bridge\Doctrine\Types\UuidType::class); |
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| 116 | } |
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| 117 | |||
| 118 | $connection = $entityManager->getConnection(); |
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| 119 | AnnotationRegistry::registerFile( |
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| 120 | $sysPath.'vendor/symfony/doctrine-bridge/Validator/Constraints/UniqueEntity.php' |
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| 121 | ); |
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| 122 | |||
| 123 | $this->setConnection($connection); |
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| 124 | $this->setManager($entityManager); |
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| 125 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * @param EntityManager $em |
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| 129 | */ |
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| 130 | public static function setManager($em) |
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| 131 | { |
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| 132 | self::$em = $em; |
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| 133 | } |
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| 134 | |||
| 135 | public static function setConnection(Connection $connection) |
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| 136 | { |
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| 137 | self::$connection = $connection; |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * @return Connection |
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| 142 | */ |
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| 143 | public static function getConnection() |
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| 144 | { |
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| 145 | return self::$connection; |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * @return EntityManager |
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| 150 | */ |
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| 151 | public static function getManager() |
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| 152 | { |
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| 153 | return self::$em; |
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| 154 | } |
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| 155 | |||
| 156 | /** |
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| 157 | * Returns the name of the main database. |
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| 158 | * |
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| 159 | * @return string |
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| 160 | */ |
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| 161 | public static function get_main_database() |
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| 162 | { |
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| 163 | return self::getManager()->getConnection()->getDatabase(); |
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| 164 | } |
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| 165 | |||
| 166 | /** |
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| 167 | * Get main table. |
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| 168 | * |
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| 169 | * @param string $table |
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| 170 | * |
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| 171 | * @return string |
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| 172 | */ |
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| 173 | public static function get_main_table($table) |
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| 174 | { |
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| 175 | return $table; |
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| 176 | } |
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| 177 | |||
| 178 | /** |
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| 179 | * Get course table. |
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| 180 | * |
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| 181 | * @param string $table |
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| 182 | * |
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| 183 | * @return string |
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| 184 | */ |
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| 185 | public static function get_course_table($table) |
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| 186 | { |
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| 187 | return DB_COURSE_PREFIX.$table; |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * Counts the number of rows in a table. |
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| 192 | * |
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| 193 | * @param string $table The table of which the rows should be counted |
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| 194 | * |
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| 195 | * @return int the number of rows in the given table |
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| 196 | * |
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| 197 | * @deprecated |
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| 198 | */ |
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| 199 | public static function count_rows($table) |
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| 200 | { |
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| 201 | $obj = self::fetch_object(self::query("SELECT COUNT(*) AS n FROM $table")); |
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| 202 | |||
| 203 | return $obj->n; |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * Returns the number of affected rows in the last database operation. |
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| 208 | * |
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| 209 | * @return int |
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| 210 | */ |
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| 211 | public static function affected_rows(Statement $result) |
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| 212 | { |
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| 213 | return $result->rowCount(); |
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| 214 | } |
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| 215 | |||
| 216 | /** |
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| 217 | * Escapes a string to insert into the database as text. |
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| 218 | * |
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| 219 | * @param string $string |
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| 220 | * |
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| 221 | * @return string |
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| 222 | */ |
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| 223 | public static function escape_string($string) |
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| 224 | { |
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| 225 | $string = self::getManager()->getConnection()->quote($string); |
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| 226 | // The quote method from PDO also adds quotes around the string, which |
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| 227 | // is not how the legacy mysql_real_escape_string() was used in |
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| 228 | // Chamilo, so we need to remove the quotes around. Using trim will |
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| 229 | // remove more than one quote if they are sequenced, generating |
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| 230 | // broken queries and SQL injection risks |
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| 231 | return substr($string, 1, -1); |
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| 232 | } |
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| 233 | |||
| 234 | /** |
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| 235 | * Gets the array from a SQL result (as returned by Database::query). |
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| 236 | * |
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| 237 | * @param string $option Optional: "ASSOC","NUM" or "BOTH" |
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| 238 | * |
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| 239 | * @return array|mixed |
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| 240 | */ |
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| 241 | public static function fetch_array(Statement $result, $option = 'BOTH') |
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| 242 | { |
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| 243 | if (false === $result) { |
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| 244 | return []; |
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| 245 | } |
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| 246 | |||
| 247 | return $result->fetch(self::customOptionToDoctrineOption($option)); |
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| 248 | } |
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| 249 | |||
| 250 | /** |
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| 251 | * Gets an associative array from a SQL result (as returned by Database::query). |
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| 252 | * |
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| 253 | * @return array |
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| 254 | */ |
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| 255 | public static function fetch_assoc(Statement $result) |
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| 256 | { |
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| 257 | return $result->fetch(PDO::FETCH_ASSOC); |
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| 258 | } |
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| 259 | |||
| 260 | /** |
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| 261 | * Gets the next row of the result of the SQL query |
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| 262 | * (as returned by Database::query) in an object form. |
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| 263 | * |
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| 264 | * @return mixed |
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| 265 | */ |
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| 266 | public static function fetch_object(Statement $result) |
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| 267 | { |
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| 268 | return $result->fetch(PDO::FETCH_OBJ); |
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| 269 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * Gets the array from a SQL result (as returned by Database::query) |
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| 273 | * help achieving database independence. |
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| 274 | * |
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| 275 | * @return mixed |
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| 276 | */ |
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| 277 | public static function fetch_row(Statement $result) |
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| 278 | { |
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| 279 | if (false === $result) { |
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| 280 | return []; |
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| 281 | } |
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| 282 | |||
| 283 | return $result->fetch(PDO::FETCH_NUM); |
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| 284 | } |
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| 285 | |||
| 286 | /** |
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| 287 | * Gets the ID of the last item inserted into the database. |
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| 288 | * |
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| 289 | * @return string |
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| 290 | */ |
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| 291 | public static function insert_id() |
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| 292 | { |
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| 293 | return self::getManager()->getConnection()->lastInsertId(); |
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| 294 | } |
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| 295 | |||
| 296 | /** |
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| 297 | * @return int |
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| 298 | */ |
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| 299 | public static function num_rows(Statement $result) |
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| 300 | { |
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| 301 | if (false === $result) { |
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| 302 | return 0; |
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| 303 | } |
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| 304 | |||
| 305 | return $result->rowCount(); |
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| 306 | } |
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| 307 | |||
| 308 | /** |
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| 309 | * Acts as the relative *_result() function of most DB drivers and fetches a |
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| 310 | * specific line and a field. |
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| 311 | * |
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| 312 | * @param int $row |
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| 313 | * @param string $field |
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| 314 | * |
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| 315 | * @return mixed |
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| 316 | */ |
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| 317 | public static function result(Statement $resource, $row, $field = '') |
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| 318 | { |
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| 319 | if ($resource->rowCount() > 0) { |
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| 320 | $result = $resource->fetchAll(PDO::FETCH_BOTH); |
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| 321 | |||
| 322 | return $result[$row][$field]; |
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| 323 | } |
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| 324 | |||
| 325 | return false; |
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| 326 | } |
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| 327 | |||
| 328 | /** |
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| 329 | * @param string $query |
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| 330 | * |
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| 331 | * @return Statement |
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| 332 | */ |
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| 333 | public static function query($query) |
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| 334 | { |
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| 335 | $connection = self::getManager()->getConnection(); |
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| 336 | $result = null; |
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| 337 | try { |
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| 338 | $result = $connection->executeQuery($query); |
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| 339 | } catch (Exception $e) { |
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| 340 | self::handleError($e); |
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| 341 | } |
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| 342 | |||
| 343 | return $result; |
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| 344 | } |
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| 345 | |||
| 346 | /** |
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| 347 | * @param Exception $e |
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| 348 | */ |
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| 349 | public static function handleError($e) |
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| 350 | { |
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| 351 | $debug = 'test' === api_get_setting('server_type'); |
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| 352 | if ($debug) { |
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| 353 | throw $e; |
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| 354 | exit; |
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| 355 | } else { |
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| 356 | error_log($e->getMessage()); |
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| 357 | api_not_allowed(false, get_lang('An error has occured. Please contact your system administrator.')); |
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| 358 | exit; |
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| 359 | } |
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| 360 | } |
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| 361 | |||
| 362 | /** |
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| 363 | * @param string $option |
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| 364 | * |
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| 365 | * @return int |
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| 366 | */ |
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| 367 | public static function customOptionToDoctrineOption($option) |
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| 368 | { |
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| 369 | switch ($option) { |
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| 370 | case 'ASSOC': |
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| 371 | return PDO::FETCH_ASSOC; |
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| 372 | break; |
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| 373 | case 'NUM': |
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| 374 | return PDO::FETCH_NUM; |
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| 375 | break; |
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| 376 | case 'BOTH': |
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| 377 | default: |
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| 378 | return PDO::FETCH_BOTH; |
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| 379 | break; |
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| 380 | } |
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| 381 | } |
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| 382 | |||
| 383 | /** |
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| 384 | * Stores a query result into an array. |
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| 385 | * |
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| 386 | * @author Olivier Brouckaert |
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| 387 | * |
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| 388 | * @param Statement $result - the return value of the query |
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| 389 | * @param string $option BOTH, ASSOC, or NUM |
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| 390 | * |
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| 391 | * @return array - the value returned by the query |
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| 392 | */ |
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| 393 | public static function store_result(Statement $result, $option = 'BOTH') |
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| 394 | { |
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| 395 | return $result->fetchAll(self::customOptionToDoctrineOption($option)); |
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| 396 | } |
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| 397 | |||
| 398 | /** |
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| 399 | * Database insert. |
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| 400 | * |
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| 401 | * @param string $table_name |
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| 402 | * @param array $attributes |
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| 403 | * @param bool $show_query |
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| 404 | * |
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| 405 | * @return false|int |
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| 406 | */ |
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| 407 | public static function insert($table_name, $attributes, $show_query = false) |
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| 408 | { |
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| 409 | if (empty($attributes) || empty($table_name)) { |
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| 410 | return false; |
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| 411 | } |
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| 412 | |||
| 413 | $params = array_keys($attributes); |
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| 414 | |||
| 415 | if (!empty($params)) { |
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| 416 | $sql = 'INSERT INTO '.$table_name.' ('.implode(',', $params).') |
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| 417 | VALUES (:'.implode(', :', $params).')'; |
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| 418 | |||
| 419 | if ($show_query) { |
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| 420 | var_dump($sql); |
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| 421 | error_log($sql); |
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| 422 | } |
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| 423 | |||
| 424 | $result = false; |
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| 425 | try { |
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| 426 | $statement = self::getConnection()->prepare($sql); |
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| 427 | $result = $statement->execute($attributes); |
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| 428 | } catch (Exception $e) { |
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| 429 | self::handleError($e); |
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| 430 | } |
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| 431 | |||
| 432 | if ($result) { |
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| 433 | return (int) self::getManager()->getConnection()->lastInsertId(); |
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| 434 | } |
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| 435 | } |
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| 436 | |||
| 437 | return false; |
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| 438 | } |
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| 439 | |||
| 440 | /** |
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| 441 | * @param string $tableName use Database::get_main_table |
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| 442 | * @param array $attributes Values to updates |
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| 443 | * Example: $params['name'] = 'Julio'; $params['lastname'] = 'Montoya'; |
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| 444 | * @param array $whereConditions where conditions i.e array('id = ?' =>'4') |
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| 445 | * @param bool $showQuery |
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| 446 | * |
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| 447 | * @return bool|int |
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| 448 | */ |
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| 449 | public static function update( |
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| 450 | $tableName, |
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| 451 | $attributes, |
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| 452 | $whereConditions = [], |
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| 453 | $showQuery = false |
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| 454 | ) { |
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| 455 | if (!empty($tableName) && !empty($attributes)) { |
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| 456 | $updateSql = ''; |
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| 457 | $count = 1; |
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| 458 | |||
| 459 | foreach ($attributes as $key => $value) { |
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| 460 | if ($showQuery) { |
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| 461 | echo $key.': '.$value.PHP_EOL; |
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| 462 | } |
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| 463 | $updateSql .= "$key = :$key "; |
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| 464 | if ($count < count($attributes)) { |
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| 465 | $updateSql .= ', '; |
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| 466 | } |
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| 467 | $count++; |
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| 468 | } |
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| 469 | |||
| 470 | if (!empty($updateSql)) { |
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| 471 | // Parsing and cleaning the where conditions |
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| 472 | $whereReturn = self::parse_where_conditions($whereConditions); |
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| 473 | $sql = "UPDATE $tableName SET $updateSql $whereReturn "; |
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| 474 | |||
| 475 | try { |
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| 476 | $statement = self::getManager()->getConnection()->prepare($sql); |
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| 477 | $result = $statement->execute($attributes); |
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| 478 | } catch (Exception $e) { |
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| 479 | self::handleError($e); |
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| 480 | } |
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| 481 | |||
| 482 | if ($showQuery) { |
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| 483 | var_dump($sql); |
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| 484 | var_dump($attributes); |
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| 485 | var_dump($whereConditions); |
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| 486 | } |
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| 487 | |||
| 488 | if ($result && $statement) { |
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| 489 | return $statement->rowCount(); |
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| 490 | } |
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| 491 | } |
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| 492 | } |
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| 493 | |||
| 494 | return false; |
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| 495 | } |
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| 496 | |||
| 497 | /** |
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| 498 | * Experimental useful database finder. |
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| 499 | * |
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| 500 | * @todo lot of stuff to do here |
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| 501 | * @todo known issues, it doesn't work when using LIKE conditions |
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| 502 | * |
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| 503 | * @example array('where'=> array('course_code LIKE "?%"')) |
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| 504 | * @example array('where'=> array('type = ? AND category = ?' => array('setting', 'Plugins')) |
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| 505 | * @example array('where'=> array('name = "Julio" AND lastname = "montoya"')) |
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| 506 | * |
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| 507 | * @param array $columns |
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| 508 | * @param string $table_name |
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| 509 | * @param array $conditions |
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| 510 | * @param string $type_result |
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| 511 | * @param string $option |
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| 512 | * @param bool $debug |
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| 513 | * |
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| 514 | * @return array |
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| 515 | */ |
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| 516 | public static function select( |
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| 517 | $columns, |
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| 518 | $table_name, |
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| 519 | $conditions = [], |
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| 520 | $type_result = 'all', |
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| 521 | $option = 'ASSOC', |
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| 522 | $debug = false |
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| 523 | ) { |
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| 524 | $conditions = self::parse_conditions($conditions); |
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| 525 | |||
| 526 | //@todo we could do a describe here to check the columns ... |
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| 527 | if (is_array($columns)) { |
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| 528 | $clean_columns = implode(',', $columns); |
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| 529 | } else { |
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| 530 | if ('*' == $columns) { |
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| 531 | $clean_columns = '*'; |
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| 532 | } else { |
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| 533 | $clean_columns = (string) $columns; |
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| 534 | } |
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| 535 | } |
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| 536 | |||
| 537 | $sql = "SELECT $clean_columns FROM $table_name $conditions"; |
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| 538 | if ($debug) { |
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| 539 | var_dump($sql); |
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| 540 | } |
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| 541 | $result = self::query($sql); |
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| 542 | $array = []; |
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| 543 | |||
| 544 | if ('all' === $type_result) { |
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| 545 | while ($row = self::fetch_array($result, $option)) { |
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| 546 | if (isset($row['id'])) { |
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| 547 | $array[$row['id']] = $row; |
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| 548 | } else { |
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| 549 | $array[] = $row; |
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| 550 | } |
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| 551 | } |
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| 552 | } else { |
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| 553 | $array = self::fetch_array($result, $option); |
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| 554 | } |
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| 555 | |||
| 556 | return $array; |
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| 557 | } |
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| 558 | |||
| 559 | /** |
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| 560 | * Parses WHERE/ORDER conditions i.e array('where'=>array('id = ?' =>'4'), 'order'=>'id DESC'). |
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| 561 | * |
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| 562 | * @todo known issues, it doesn't work when using |
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| 563 | * LIKE conditions example: array('where'=>array('course_code LIKE "?%"')) |
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| 564 | * |
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| 565 | * @param array $conditions |
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| 566 | * |
||
| 567 | * @return string Partial SQL string to add to longer query |
||
| 568 | */ |
||
| 569 | public static function parse_conditions($conditions) |
||
| 659 | } |
||
| 660 | |||
| 661 | /** |
||
| 662 | * @param array $conditions |
||
| 663 | * |
||
| 664 | * @return string |
||
| 665 | */ |
||
| 666 | public static function parse_where_conditions($conditions) |
||
| 667 | { |
||
| 668 | return self::parse_conditions(['where' => $conditions]); |
||
| 669 | } |
||
| 670 | |||
| 671 | /** |
||
| 672 | * @param string $table_name |
||
| 673 | * @param array $where_conditions |
||
| 674 | * @param bool $show_query |
||
| 675 | * |
||
| 676 | * @return int |
||
| 677 | */ |
||
| 678 | public static function delete($table_name, $where_conditions, $show_query = false) |
||
| 679 | { |
||
| 680 | $where_return = self::parse_where_conditions($where_conditions); |
||
| 681 | $sql = "DELETE FROM $table_name $where_return "; |
||
| 682 | if ($show_query) { |
||
| 683 | echo $sql; |
||
| 684 | echo '<br />'; |
||
| 685 | } |
||
| 686 | $result = self::query($sql); |
||
| 687 | $affected_rows = self::affected_rows($result); |
||
| 688 | //@todo should return affected_rows for |
||
| 689 | return $affected_rows; |
||
| 690 | } |
||
| 691 | |||
| 692 | /** |
||
| 693 | * Get Doctrine configuration. |
||
| 694 | * |
||
| 695 | * @param string $path |
||
| 696 | * |
||
| 697 | * @return Configuration |
||
| 698 | */ |
||
| 699 | public static function getDoctrineConfig($path) |
||
| 700 | { |
||
| 701 | $isDevMode = true; // Forces doctrine to use ArrayCache instead of apc/xcache/memcache/redis |
||
| 702 | $isSimpleMode = false; // related to annotations @Entity |
||
| 703 | $cache = null; |
||
| 704 | $path = !empty($path) ? $path : api_get_path(SYMFONY_SYS_PATH); |
||
| 705 | |||
| 706 | $paths = [ |
||
| 707 | $path.'src/Chamilo/CoreBundle/Entity', |
||
| 708 | $path.'src/Chamilo/CourseBundle/Entity', |
||
| 709 | ]; |
||
| 710 | |||
| 711 | $proxyDir = $path.'var/cache/'; |
||
| 712 | |||
| 713 | return \Doctrine\ORM\Tools\Setup::createAnnotationMetadataConfiguration( |
||
| 714 | $paths, |
||
| 715 | $isDevMode, |
||
| 716 | $proxyDir, |
||
| 717 | $cache, |
||
| 718 | $isSimpleMode |
||
| 719 | ); |
||
| 720 | } |
||
| 721 | |||
| 722 | /** |
||
| 723 | * @param string $table |
||
| 724 | * |
||
| 725 | * @return bool |
||
| 726 | */ |
||
| 727 | public static function tableExists($table) |
||
| 730 | } |
||
| 731 | |||
| 732 | /** |
||
| 733 | * @param string $table |
||
| 734 | * |
||
| 735 | * @return \Doctrine\DBAL\Schema\Column[] |
||
| 736 | */ |
||
| 737 | public static function listTableColumns($table) |
||
| 738 | { |
||
| 739 | return self::getManager()->getConnection()->getSchemaManager()->listTableColumns($table); |
||
| 740 | } |
||
| 741 | } |
||
| 742 |
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In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.