sminnee /
silverstripe-framework
| Total Complexity | 71 |
| Total Lines | 674 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like DB 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 DB, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 24 | class DB |
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| 25 | { |
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| 26 | |||
| 27 | /** |
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| 28 | * This constant was added in SilverStripe 2.4 to indicate that SQL-queries |
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| 29 | * should now use ANSI-compatible syntax. The most notable affect of this |
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| 30 | * change is that table and field names should be escaped with double quotes |
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| 31 | * and not backticks |
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| 32 | */ |
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| 33 | const USE_ANSI_SQL = true; |
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| 34 | |||
| 35 | /** |
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| 36 | * Session key for alternative database name |
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| 37 | */ |
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| 38 | const ALT_DB_KEY = 'alternativeDatabaseName'; |
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| 39 | |||
| 40 | /** |
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| 41 | * Allow alternative DB to be disabled. |
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| 42 | * Necessary for DB backed session store to work. |
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| 43 | * |
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| 44 | * @config |
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| 45 | * @var bool |
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| 46 | */ |
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| 47 | private static $alternative_database_enabled = true; |
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|
introduced
by
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| 48 | |||
| 49 | /** |
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| 50 | * The global database connection. |
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| 51 | * |
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| 52 | * @var Database |
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| 53 | */ |
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| 54 | protected static $connections = []; |
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| 55 | |||
| 56 | /** |
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| 57 | * List of configurations for each connection |
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| 58 | * |
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| 59 | * @var array List of configs each in the $databaseConfig format |
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| 60 | */ |
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| 61 | protected static $configs = []; |
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| 62 | |||
| 63 | |||
| 64 | |||
| 65 | /** |
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| 66 | * The last SQL query run. |
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| 67 | * @var string |
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| 68 | */ |
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| 69 | public static $lastQuery; |
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| 70 | |||
| 71 | /** |
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| 72 | * Internal flag to keep track of when db connection was attempted. |
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| 73 | */ |
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| 74 | private static $connection_attempted = false; |
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| 75 | |||
| 76 | /** |
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| 77 | * Set the global database connection. |
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| 78 | * Pass an object that's a subclass of SS_Database. This object will be used when {@link DB::query()} |
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| 79 | * is called. |
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| 80 | * |
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| 81 | * @param Database $connection The connecton object to set as the connection. |
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| 82 | * @param string $name The name to give to this connection. If you omit this argument, the connection |
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| 83 | * will be the default one used by the ORM. However, you can store other named connections to |
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| 84 | * be accessed through DB::get_conn($name). This is useful when you have an application that |
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| 85 | * needs to connect to more than one database. |
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| 86 | */ |
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| 87 | public static function set_conn(Database $connection, $name = 'default') |
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| 88 | { |
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| 89 | self::$connections[$name] = $connection; |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Get the global database connection. |
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| 94 | * |
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| 95 | * @param string $name An optional name given to a connection in the DB::setConn() call. If omitted, |
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| 96 | * the default connection is returned. |
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| 97 | * @return Database |
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| 98 | */ |
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| 99 | public static function get_conn($name = 'default') |
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| 100 | { |
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| 101 | if (isset(self::$connections[$name])) { |
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| 102 | return self::$connections[$name]; |
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| 103 | } |
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| 104 | |||
| 105 | // lazy connect |
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| 106 | $config = static::getConfig($name); |
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| 107 | if ($config) { |
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| 108 | return static::connect($config, $name); |
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| 109 | } |
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| 110 | |||
| 111 | return null; |
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| 112 | } |
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| 113 | |||
| 114 | /** |
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| 115 | * @deprecated since version 4.0 Use DB::get_conn instead |
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| 116 | * @todo PSR-2 standardisation will probably un-deprecate this |
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| 117 | */ |
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| 118 | public static function getConn($name = 'default') |
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| 119 | { |
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| 120 | Deprecation::notice('4.0', 'Use DB::get_conn instead'); |
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| 121 | return self::get_conn($name); |
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| 122 | } |
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| 123 | |||
| 124 | /** |
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| 125 | * Retrieves the schema manager for the current database |
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| 126 | * |
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| 127 | * @param string $name An optional name given to a connection in the DB::setConn() call. If omitted, |
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| 128 | * the default connection is returned. |
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| 129 | * @return DBSchemaManager |
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| 130 | */ |
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| 131 | public static function get_schema($name = 'default') |
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| 132 | { |
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| 133 | $connection = self::get_conn($name); |
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| 134 | if ($connection) { |
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| 135 | return $connection->getSchemaManager(); |
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| 136 | } |
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| 137 | return null; |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * Builds a sql query with the specified connection |
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| 142 | * |
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| 143 | * @param SQLExpression $expression The expression object to build from |
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| 144 | * @param array $parameters Out parameter for the resulting query parameters |
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| 145 | * @param string $name An optional name given to a connection in the DB::setConn() call. If omitted, |
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| 146 | * the default connection is returned. |
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| 147 | * @return string The resulting SQL as a string |
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| 148 | */ |
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| 149 | public static function build_sql(SQLExpression $expression, &$parameters, $name = 'default') |
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| 150 | { |
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| 151 | $connection = self::get_conn($name); |
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| 152 | if ($connection) { |
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| 153 | return $connection->getQueryBuilder()->buildSQL($expression, $parameters); |
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| 154 | } else { |
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| 155 | $parameters = array(); |
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| 156 | return null; |
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| 157 | } |
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| 158 | } |
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| 159 | |||
| 160 | /** |
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| 161 | * Retrieves the connector object for the current database |
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| 162 | * |
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| 163 | * @param string $name An optional name given to a connection in the DB::setConn() call. If omitted, |
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| 164 | * the default connection is returned. |
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| 165 | * @return DBConnector |
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| 166 | */ |
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| 167 | public static function get_connector($name = 'default') |
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| 168 | { |
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| 169 | $connection = self::get_conn($name); |
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| 170 | if ($connection) { |
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| 171 | return $connection->getConnector(); |
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| 172 | } |
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| 173 | return null; |
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| 174 | } |
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| 175 | |||
| 176 | /** |
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| 177 | * Set an alternative database in a browser cookie, |
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| 178 | * with the cookie lifetime set to the browser session. |
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| 179 | * This is useful for integration testing on temporary databases. |
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| 180 | * |
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| 181 | * There is a strict naming convention for temporary databases to avoid abuse: |
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| 182 | * <prefix> (default: 'ss_') + tmpdb + <7 digits> |
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| 183 | * As an additional security measure, temporary databases will |
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| 184 | * be ignored in "live" mode. |
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| 185 | * |
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| 186 | * Note that the database will be set on the next request. |
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| 187 | * Set it to null to revert to the main database. |
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| 188 | * |
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| 189 | * @param string $name |
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| 190 | */ |
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| 191 | public static function set_alternative_database_name($name = null) |
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| 192 | { |
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| 193 | // Ignore if disabled |
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| 194 | if (!Config::inst()->get(static::class, 'alternative_database_enabled')) { |
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| 195 | return; |
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| 196 | } |
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| 197 | // Skip if CLI |
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| 198 | if (Director::is_cli()) { |
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| 199 | return; |
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| 200 | } |
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| 201 | // Validate name |
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| 202 | if ($name && !self::valid_alternative_database_name($name)) { |
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| 203 | throw new InvalidArgumentException(sprintf( |
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| 204 | 'Invalid alternative database name: "%s"', |
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| 205 | $name |
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| 206 | )); |
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| 207 | } |
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| 208 | |||
| 209 | // Set against session |
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| 210 | if (!Injector::inst()->has(HTTPRequest::class)) { |
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| 211 | return; |
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| 212 | } |
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| 213 | /** @var HTTPRequest $request */ |
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| 214 | $request = Injector::inst()->get(HTTPRequest::class); |
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| 215 | if ($name) { |
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| 216 | $request->getSession()->set(self::ALT_DB_KEY, $name); |
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| 217 | } else { |
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| 218 | $request->getSession()->clear(self::ALT_DB_KEY); |
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| 219 | } |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * Get the name of the database in use |
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| 224 | * |
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| 225 | * @return string|false Name of temp database, or false if not set |
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| 226 | */ |
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| 227 | public static function get_alternative_database_name() |
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| 228 | { |
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| 229 | // Ignore if disabled |
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| 230 | if (!Config::inst()->get(static::class, 'alternative_database_enabled')) { |
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| 231 | return false; |
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| 232 | } |
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| 233 | // Skip if CLI |
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| 234 | if (Director::is_cli()) { |
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| 235 | return false; |
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| 236 | } |
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| 237 | // Skip if there's no request object yet |
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| 238 | if (!Injector::inst()->has(HTTPRequest::class)) { |
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| 239 | return null; |
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| 240 | } |
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| 241 | /** @var HTTPRequest $request */ |
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| 242 | $request = Injector::inst()->get(HTTPRequest::class); |
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| 243 | // Skip if the session hasn't been started |
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| 244 | if (!$request->getSession()->isStarted()) { |
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| 245 | return null; |
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| 246 | } |
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| 247 | |||
| 248 | $name = $request->getSession()->get(self::ALT_DB_KEY); |
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| 249 | if (self::valid_alternative_database_name($name)) { |
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| 250 | return $name; |
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| 251 | } |
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| 252 | |||
| 253 | return false; |
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| 254 | } |
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| 255 | |||
| 256 | /** |
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| 257 | * Determines if the name is valid, as a security |
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| 258 | * measure against setting arbitrary databases. |
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| 259 | * |
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| 260 | * @param string $name |
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| 261 | * @return bool |
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| 262 | */ |
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| 263 | public static function valid_alternative_database_name($name) |
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| 264 | { |
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| 265 | if (Director::isLive() || empty($name)) { |
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| 266 | return false; |
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| 267 | } |
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| 268 | |||
| 269 | $prefix = Environment::getEnv('SS_DATABASE_PREFIX') ?: 'ss_'; |
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| 270 | $pattern = strtolower(sprintf('/^%stmpdb\d{7}$/', $prefix)); |
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| 271 | return (bool)preg_match($pattern, $name); |
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| 272 | } |
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| 273 | |||
| 274 | /** |
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| 275 | * Specify connection to a database |
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| 276 | * |
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| 277 | * Given the database configuration, this method will create the correct |
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| 278 | * subclass of {@link SS_Database}. |
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| 279 | * |
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| 280 | * @param array $databaseConfig A map of options. The 'type' is the name of the |
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| 281 | * subclass of SS_Database to use. For the rest of the options, see the specific class. |
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| 282 | * @param string $label identifier for the connection |
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| 283 | * @return Database |
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| 284 | */ |
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| 285 | public static function connect($databaseConfig, $label = 'default') |
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| 286 | { |
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| 287 | // This is used by the "testsession" module to test up a test session using an alternative name |
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| 288 | if ($name = self::get_alternative_database_name()) { |
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| 289 | $databaseConfig['database'] = $name; |
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| 290 | } |
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| 291 | |||
| 292 | if (!isset($databaseConfig['type']) || empty($databaseConfig['type'])) { |
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| 293 | throw new InvalidArgumentException("DB::connect: Not passed a valid database config"); |
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| 294 | } |
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| 295 | |||
| 296 | self::$connection_attempted = true; |
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| 297 | |||
| 298 | $dbClass = $databaseConfig['type']; |
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| 299 | |||
| 300 | // Using Injector->create allows us to use registered configurations |
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| 301 | // which may or may not map to explicit objects |
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| 302 | $conn = Injector::inst()->create($dbClass); |
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| 303 | self::set_conn($conn, $label); |
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| 304 | $conn->connect($databaseConfig); |
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| 305 | |||
| 306 | return $conn; |
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| 307 | } |
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| 308 | |||
| 309 | /** |
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| 310 | * Set config for a lazy-connected database |
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| 311 | * |
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| 312 | * @param array $databaseConfig |
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| 313 | * @param string $name |
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| 314 | */ |
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| 315 | public static function setConfig($databaseConfig, $name = 'default') |
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| 316 | { |
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| 317 | static::$configs[$name] = $databaseConfig; |
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| 318 | } |
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| 319 | |||
| 320 | /** |
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| 321 | * Get the named connection config |
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| 322 | * |
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| 323 | * @param string $name |
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| 324 | * @return mixed |
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| 325 | */ |
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| 326 | public static function getConfig($name = 'default') |
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| 327 | { |
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| 328 | if (isset(static::$configs[$name])) { |
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| 329 | return static::$configs[$name]; |
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| 330 | } |
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| 331 | } |
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| 332 | |||
| 333 | /** |
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| 334 | * Returns true if a database connection has been attempted. |
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| 335 | * In particular, it lets the caller know if we're still so early in the execution pipeline that |
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| 336 | * we haven't even tried to connect to the database yet. |
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| 337 | */ |
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| 338 | public static function connection_attempted() |
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| 339 | { |
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| 340 | return self::$connection_attempted; |
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| 341 | } |
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| 342 | |||
| 343 | /** |
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| 344 | * Execute the given SQL query. |
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| 345 | * @param string $sql The SQL query to execute |
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| 346 | * @param int $errorLevel The level of error reporting to enable for the query |
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| 347 | * @return Query |
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| 348 | */ |
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| 349 | public static function query($sql, $errorLevel = E_USER_ERROR) |
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| 350 | { |
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| 351 | self::$lastQuery = $sql; |
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| 352 | |||
| 353 | return self::get_conn()->query($sql, $errorLevel); |
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| 354 | } |
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| 355 | |||
| 356 | /** |
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| 357 | * Helper function for generating a list of parameter placeholders for the |
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| 358 | * given argument(s) |
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| 359 | * |
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| 360 | * @param array|integer $input An array of items needing placeholders, or a |
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| 361 | * number to specify the number of placeholders |
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| 362 | * @param string $join The string to join each placeholder together with |
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| 363 | * @return string|null Either a list of placeholders, or null |
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| 364 | */ |
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| 365 | public static function placeholders($input, $join = ', ') |
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| 366 | { |
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| 367 | if (is_array($input)) { |
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| 368 | $number = count($input); |
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| 369 | } elseif (is_numeric($input)) { |
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| 370 | $number = intval($input); |
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| 371 | } else { |
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| 372 | return null; |
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| 373 | } |
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| 374 | if ($number === 0) { |
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| 375 | return null; |
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| 376 | } |
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| 377 | return implode($join, array_fill(0, $number, '?')); |
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| 378 | } |
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| 379 | |||
| 380 | /** |
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| 381 | * @param string $sql The parameterised query |
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| 382 | * @param array $parameters The parameters to inject into the query |
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| 383 | * |
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| 384 | * @return string |
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| 385 | */ |
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| 386 | public static function inline_parameters($sql, $parameters) |
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| 387 | { |
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| 388 | $segments = preg_split('/\?/', $sql); |
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| 389 | $joined = ''; |
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| 390 | $inString = false; |
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| 391 | $numSegments = count($segments); |
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| 392 | for ($i = 0; $i < $numSegments; $i++) { |
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| 393 | $input = $segments[$i]; |
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| 394 | // Append next segment |
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| 395 | $joined .= $segments[$i]; |
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| 396 | // Don't add placeholder after last segment |
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| 397 | if ($i === $numSegments - 1) { |
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| 398 | break; |
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| 399 | } |
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| 400 | // check string escape on previous fragment |
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| 401 | // Remove escaped backslashes, count them! |
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| 402 | $input = preg_replace('/\\\\\\\\/', '', $input); |
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| 403 | // Count quotes |
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| 404 | $totalQuotes = substr_count($input, "'"); // Includes double quote escaped quotes |
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| 405 | $escapedQuotes = substr_count($input, "\\'"); |
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| 406 | if ((($totalQuotes - $escapedQuotes) % 2) !== 0) { |
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| 407 | $inString = !$inString; |
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| 408 | } |
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| 409 | // Append placeholder replacement |
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| 410 | if ($inString) { |
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| 411 | // Literal question mark |
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| 412 | $joined .= '?'; |
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| 413 | continue; |
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| 414 | } |
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| 415 | |||
| 416 | // Encode and insert next parameter |
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| 417 | $next = array_shift($parameters); |
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| 418 | if (is_array($next) && isset($next['value'])) { |
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| 419 | $next = $next['value']; |
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| 420 | } |
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| 421 | if (is_bool($next)) { |
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| 422 | $value = $next ? '1' : '0'; |
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| 423 | } elseif (is_int($next)) { |
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| 424 | $value = $next; |
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| 425 | } else { |
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| 426 | $value = (DB::get_conn() !== null) ? Convert::raw2sql($next, true) : $next; |
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| 427 | } |
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| 428 | $joined .= $value; |
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| 429 | } |
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| 430 | return $joined; |
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| 431 | } |
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| 432 | |||
| 433 | /** |
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| 434 | * Execute the given SQL parameterised query with the specified arguments |
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| 435 | * |
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| 436 | * @param string $sql The SQL query to execute. The ? character will denote parameters. |
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| 437 | * @param array $parameters An ordered list of arguments. |
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| 438 | * @param int $errorLevel The level of error reporting to enable for the query |
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| 439 | * @return Query |
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| 440 | */ |
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| 441 | public static function prepared_query($sql, $parameters, $errorLevel = E_USER_ERROR) |
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| 442 | { |
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| 443 | self::$lastQuery = $sql; |
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| 444 | |||
| 445 | return self::get_conn()->preparedQuery($sql, $parameters, $errorLevel); |
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| 446 | } |
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| 447 | |||
| 448 | /** |
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| 449 | * Execute a complex manipulation on the database. |
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| 450 | * A manipulation is an array of insert / or update sequences. The keys of the array are table names, |
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| 451 | * and the values are map containing 'command' and 'fields'. Command should be 'insert' or 'update', |
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| 452 | * and fields should be a map of field names to field values, including quotes. The field value can |
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| 453 | * also be a SQL function or similar. |
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| 454 | * |
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| 455 | * Example: |
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| 456 | * <code> |
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| 457 | * array( |
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| 458 | * // Command: insert |
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| 459 | * "table name" => array( |
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| 460 | * "command" => "insert", |
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| 461 | * "fields" => array( |
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| 462 | * "ClassName" => "'MyClass'", // if you're setting a literal, you need to escape and provide quotes |
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| 463 | * "Created" => "now()", // alternatively, you can call DB functions |
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| 464 | * "ID" => 234, |
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| 465 | * ), |
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| 466 | * "id" => 234 // an alternative to providing ID in the fields list |
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| 467 | * ), |
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| 468 | * |
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| 469 | * // Command: update |
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| 470 | * "other table" => array( |
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| 471 | * "command" => "update", |
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| 472 | * "fields" => array( |
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| 473 | * "ClassName" => "'MyClass'", |
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| 474 | * "LastEdited" => "now()", |
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| 475 | * ), |
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| 476 | * "where" => "ID = 234", |
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| 477 | * "id" => 234 // an alternative to providing a where clause |
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| 478 | * ), |
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| 479 | * ) |
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| 480 | * </code> |
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| 481 | * |
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| 482 | * You'll note that only one command on a given table can be called. |
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| 483 | * That's a limitation of the system that's due to it being written for {@link DataObject::write()}, |
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| 484 | * which needs to do a single write on a number of different tables. |
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| 485 | * |
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| 486 | * @todo Update this to support paramaterised queries |
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| 487 | * |
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| 488 | * @param array $manipulation |
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| 489 | */ |
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| 490 | public static function manipulate($manipulation) |
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| 491 | { |
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| 492 | self::$lastQuery = $manipulation; |
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| 493 | self::get_conn()->manipulate($manipulation); |
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| 494 | } |
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| 495 | |||
| 496 | /** |
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| 497 | * Get the autogenerated ID from the previous INSERT query. |
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| 498 | * |
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| 499 | * @param string $table |
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| 500 | * @return int |
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| 501 | */ |
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| 502 | public static function get_generated_id($table) |
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| 503 | { |
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| 504 | return self::get_conn()->getGeneratedID($table); |
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| 505 | } |
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| 506 | |||
| 507 | /** |
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| 508 | * Check if the connection to the database is active. |
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| 509 | * |
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| 510 | * @return boolean |
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| 511 | */ |
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| 512 | public static function is_active() |
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| 515 | } |
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| 516 | |||
| 517 | /** |
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| 518 | * Create the database and connect to it. This can be called if the |
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| 519 | * initial database connection is not successful because the database |
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| 520 | * does not exist. |
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| 521 | * |
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| 522 | * @param string $database Name of database to create |
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| 523 | * @return boolean Returns true if successful |
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| 524 | */ |
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| 525 | public static function create_database($database) |
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| 526 | { |
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| 527 | return self::get_conn()->selectDatabase($database, true); |
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| 528 | } |
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| 529 | |||
| 530 | /** |
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| 531 | * Create a new table. |
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| 532 | * @param string $table The name of the table |
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| 533 | * @param array$fields A map of field names to field types |
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| 534 | * @param array $indexes A map of indexes |
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| 535 | * @param array $options An map of additional options. The available keys are as follows: |
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| 536 | * - 'MSSQLDatabase'/'MySQLDatabase'/'PostgreSQLDatabase' - database-specific options such as "engine" |
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| 537 | * for MySQL. |
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| 538 | * - 'temporary' - If true, then a temporary table will be created |
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| 539 | * @param array $advancedOptions Advanced creation options |
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| 540 | * @return string The table name generated. This may be different from the table name, for example with |
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| 541 | * temporary tables. |
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| 542 | */ |
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| 543 | public static function create_table( |
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| 544 | $table, |
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| 545 | $fields = null, |
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| 546 | $indexes = null, |
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| 547 | $options = null, |
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| 548 | $advancedOptions = null |
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| 549 | ) { |
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| 550 | return self::get_schema()->createTable($table, $fields, $indexes, $options, $advancedOptions); |
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| 551 | } |
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| 552 | |||
| 553 | /** |
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| 554 | * Create a new field on a table. |
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| 555 | * @param string $table Name of the table. |
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| 556 | * @param string $field Name of the field to add. |
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| 557 | * @param string $spec The field specification, eg 'INTEGER NOT NULL' |
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| 558 | */ |
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| 559 | public static function create_field($table, $field, $spec) |
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| 560 | { |
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| 561 | return self::get_schema()->createField($table, $field, $spec); |
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| 562 | } |
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| 563 | |||
| 564 | /** |
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| 565 | * Generate the following table in the database, modifying whatever already exists |
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| 566 | * as necessary. |
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| 567 | * |
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| 568 | * @param string $table The name of the table |
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| 569 | * @param string $fieldSchema A list of the fields to create, in the same form as DataObject::$db |
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| 570 | * @param string $indexSchema A list of indexes to create. The keys of the array are the names of the index. |
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| 571 | * The values of the array can be one of: |
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| 572 | * - true: Create a single column index on the field named the same as the index. |
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| 573 | * - array('fields' => array('A','B','C'), 'type' => 'index/unique/fulltext'): This gives you full |
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| 574 | * control over the index. |
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| 575 | * @param boolean $hasAutoIncPK A flag indicating that the primary key on this table is an autoincrement type |
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| 576 | * @param string $options SQL statement to append to the CREATE TABLE call. |
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| 577 | * @param array $extensions List of extensions |
||
| 578 | */ |
||
| 579 | public static function require_table( |
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| 580 | $table, |
||
| 581 | $fieldSchema = null, |
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| 582 | $indexSchema = null, |
||
| 583 | $hasAutoIncPK = true, |
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| 584 | $options = null, |
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| 585 | $extensions = null |
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| 586 | ) { |
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| 587 | self::get_schema()->requireTable($table, $fieldSchema, $indexSchema, $hasAutoIncPK, $options, $extensions); |
||
| 588 | } |
||
| 589 | |||
| 590 | /** |
||
| 591 | * Generate the given field on the table, modifying whatever already exists as necessary. |
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| 592 | * |
||
| 593 | * @param string $table The table name. |
||
| 594 | * @param string $field The field name. |
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| 595 | * @param string $spec The field specification. |
||
| 596 | */ |
||
| 597 | public static function require_field($table, $field, $spec) |
||
| 598 | { |
||
| 599 | self::get_schema()->requireField($table, $field, $spec); |
||
| 600 | } |
||
| 601 | |||
| 602 | /** |
||
| 603 | * Generate the given index in the database, modifying whatever already exists as necessary. |
||
| 604 | * |
||
| 605 | * @param string $table The table name. |
||
| 606 | * @param string $index The index name. |
||
| 607 | * @param string|boolean $spec The specification of the index. See requireTable() for more information. |
||
| 608 | */ |
||
| 609 | public static function require_index($table, $index, $spec) |
||
| 610 | { |
||
| 611 | self::get_schema()->requireIndex($table, $index, $spec); |
||
| 612 | } |
||
| 613 | |||
| 614 | /** |
||
| 615 | * If the given table exists, move it out of the way by renaming it to _obsolete_(tablename). |
||
| 616 | * |
||
| 617 | * @param string $table The table name. |
||
| 618 | */ |
||
| 619 | public static function dont_require_table($table) |
||
| 620 | { |
||
| 621 | self::get_schema()->dontRequireTable($table); |
||
| 622 | } |
||
| 623 | |||
| 624 | /** |
||
| 625 | * See {@link SS_Database->dontRequireField()}. |
||
| 626 | * |
||
| 627 | * @param string $table The table name. |
||
| 628 | * @param string $fieldName The field name not to require |
||
| 629 | */ |
||
| 630 | public static function dont_require_field($table, $fieldName) |
||
| 633 | } |
||
| 634 | |||
| 635 | /** |
||
| 636 | * Checks a table's integrity and repairs it if necessary. |
||
| 637 | * |
||
| 638 | * @param string $table The name of the table. |
||
| 639 | * @return boolean Return true if the table has integrity after the method is complete. |
||
| 640 | */ |
||
| 641 | public static function check_and_repair_table($table) |
||
| 642 | { |
||
| 643 | return self::get_schema()->checkAndRepairTable($table); |
||
| 644 | } |
||
| 645 | |||
| 646 | /** |
||
| 647 | * Return the number of rows affected by the previous operation. |
||
| 648 | * |
||
| 649 | * @return integer The number of affected rows |
||
| 650 | */ |
||
| 651 | public static function affected_rows() |
||
| 652 | { |
||
| 653 | return self::get_conn()->affectedRows(); |
||
| 654 | } |
||
| 655 | |||
| 656 | /** |
||
| 657 | * Returns a list of all tables in the database. |
||
| 658 | * The table names will be in lower case. |
||
| 659 | * |
||
| 660 | * @return array The list of tables |
||
| 661 | */ |
||
| 662 | public static function table_list() |
||
| 665 | } |
||
| 666 | |||
| 667 | /** |
||
| 668 | * Get a list of all the fields for the given table. |
||
| 669 | * Returns a map of field name => field spec. |
||
| 670 | * |
||
| 671 | * @param string $table The table name. |
||
| 672 | * @return array The list of fields |
||
| 673 | */ |
||
| 674 | public static function field_list($table) |
||
| 675 | { |
||
| 676 | return self::get_schema()->fieldList($table); |
||
| 677 | } |
||
| 678 | |||
| 679 | /** |
||
| 680 | * Enable supression of database messages. |
||
| 681 | * |
||
| 682 | * @param bool $quiet |
||
| 683 | */ |
||
| 684 | public static function quiet($quiet = true) |
||
| 687 | } |
||
| 688 | |||
| 689 | /** |
||
| 690 | * Show a message about database alteration |
||
| 691 | * |
||
| 692 | * @param string $message to display |
||
| 693 | * @param string $type one of [created|changed|repaired|obsolete|deleted|error] |
||
| 694 | */ |
||
| 695 | public static function alteration_message($message, $type = "") |
||
| 698 | } |
||
| 699 | } |
||
| 700 |
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