diff -r 000000000000 -r 4eba9c11703f web/Zend/Db/Adapter/Pdo/Mysql.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/web/Zend/Db/Adapter/Pdo/Mysql.php Mon Dec 13 18:29:26 2010 +0100 @@ -0,0 +1,257 @@ + Zend_Db::INT_TYPE, + Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE, + Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE, + 'INT' => Zend_Db::INT_TYPE, + 'INTEGER' => Zend_Db::INT_TYPE, + 'MEDIUMINT' => Zend_Db::INT_TYPE, + 'SMALLINT' => Zend_Db::INT_TYPE, + 'TINYINT' => Zend_Db::INT_TYPE, + 'BIGINT' => Zend_Db::BIGINT_TYPE, + 'SERIAL' => Zend_Db::BIGINT_TYPE, + 'DEC' => Zend_Db::FLOAT_TYPE, + 'DECIMAL' => Zend_Db::FLOAT_TYPE, + 'DOUBLE' => Zend_Db::FLOAT_TYPE, + 'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE, + 'FIXED' => Zend_Db::FLOAT_TYPE, + 'FLOAT' => Zend_Db::FLOAT_TYPE + ); + + /** + * Creates a PDO object and connects to the database. + * + * @return void + * @throws Zend_Db_Adapter_Exception + */ + protected function _connect() + { + if ($this->_connection) { + return; + } + + if (!empty($this->_config['charset'])) { + $initCommand = "SET NAMES '" . $this->_config['charset'] . "'"; + $this->_config['driver_options'][1002] = $initCommand; // 1002 = PDO::MYSQL_ATTR_INIT_COMMAND + } + + parent::_connect(); + } + + /** + * @return string + */ + public function getQuoteIdentifierSymbol() + { + return "`"; + } + + /** + * Returns a list of the tables in the database. + * + * @return array + */ + public function listTables() + { + return $this->fetchCol('SHOW TABLES'); + } + + /** + * Returns the column descriptions for a table. + * + * The return value is an associative array keyed by the column name, + * as returned by the RDBMS. + * + * The value of each array element is an associative array + * with the following keys: + * + * SCHEMA_NAME => string; name of database or schema + * TABLE_NAME => string; + * COLUMN_NAME => string; column name + * COLUMN_POSITION => number; ordinal position of column in table + * DATA_TYPE => string; SQL datatype name of column + * DEFAULT => string; default expression of column, null if none + * NULLABLE => boolean; true if column can have nulls + * LENGTH => number; length of CHAR/VARCHAR + * SCALE => number; scale of NUMERIC/DECIMAL + * PRECISION => number; precision of NUMERIC/DECIMAL + * UNSIGNED => boolean; unsigned property of an integer type + * PRIMARY => boolean; true if column is part of the primary key + * PRIMARY_POSITION => integer; position of column in primary key + * IDENTITY => integer; true if column is auto-generated with unique values + * + * @param string $tableName + * @param string $schemaName OPTIONAL + * @return array + */ + public function describeTable($tableName, $schemaName = null) + { + // @todo use INFORMATION_SCHEMA someday when MySQL's + // implementation has reasonably good performance and + // the version with this improvement is in wide use. + + if ($schemaName) { + $sql = 'DESCRIBE ' . $this->quoteIdentifier("$schemaName.$tableName", true); + } else { + $sql = 'DESCRIBE ' . $this->quoteIdentifier($tableName, true); + } + $stmt = $this->query($sql); + + // Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection + $result = $stmt->fetchAll(Zend_Db::FETCH_NUM); + + $field = 0; + $type = 1; + $null = 2; + $key = 3; + $default = 4; + $extra = 5; + + $desc = array(); + $i = 1; + $p = 1; + foreach ($result as $row) { + list($length, $scale, $precision, $unsigned, $primary, $primaryPosition, $identity) + = array(null, null, null, null, false, null, false); + if (preg_match('/unsigned/', $row[$type])) { + $unsigned = true; + } + if (preg_match('/^((?:var)?char)\((\d+)\)/', $row[$type], $matches)) { + $row[$type] = $matches[1]; + $length = $matches[2]; + } else if (preg_match('/^decimal\((\d+),(\d+)\)/', $row[$type], $matches)) { + $row[$type] = 'decimal'; + $precision = $matches[1]; + $scale = $matches[2]; + } else if (preg_match('/^float\((\d+),(\d+)\)/', $row[$type], $matches)) { + $row[$type] = 'float'; + $precision = $matches[1]; + $scale = $matches[2]; + } else if (preg_match('/^((?:big|medium|small|tiny)?int)\((\d+)\)/', $row[$type], $matches)) { + $row[$type] = $matches[1]; + // The optional argument of a MySQL int type is not precision + // or length; it is only a hint for display width. + } + if (strtoupper($row[$key]) == 'PRI') { + $primary = true; + $primaryPosition = $p; + if ($row[$extra] == 'auto_increment') { + $identity = true; + } else { + $identity = false; + } + ++$p; + } + $desc[$this->foldCase($row[$field])] = array( + 'SCHEMA_NAME' => null, // @todo + 'TABLE_NAME' => $this->foldCase($tableName), + 'COLUMN_NAME' => $this->foldCase($row[$field]), + 'COLUMN_POSITION' => $i, + 'DATA_TYPE' => $row[$type], + 'DEFAULT' => $row[$default], + 'NULLABLE' => (bool) ($row[$null] == 'YES'), + 'LENGTH' => $length, + 'SCALE' => $scale, + 'PRECISION' => $precision, + 'UNSIGNED' => $unsigned, + 'PRIMARY' => $primary, + 'PRIMARY_POSITION' => $primaryPosition, + 'IDENTITY' => $identity + ); + ++$i; + } + return $desc; + } + + /** + * Adds an adapter-specific LIMIT clause to the SELECT statement. + * + * @param string $sql + * @param integer $count + * @param integer $offset OPTIONAL + * @throws Zend_Db_Adapter_Exception + * @return string + */ + public function limit($sql, $count, $offset = 0) + { + $count = intval($count); + if ($count <= 0) { + /** @see Zend_Db_Adapter_Exception */ + require_once 'Zend/Db/Adapter/Exception.php'; + throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid"); + } + + $offset = intval($offset); + if ($offset < 0) { + /** @see Zend_Db_Adapter_Exception */ + require_once 'Zend/Db/Adapter/Exception.php'; + throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid"); + } + + $sql .= " LIMIT $count"; + if ($offset > 0) { + $sql .= " OFFSET $offset"; + } + + return $sql; + } + +}