connection = @mssql_connect($config['host'], $config['username'], $config['password'], TRUE); } else { $this->connection = @mssql_pconnect($config['host'], $config['username'], $config['password']); } if (!is_resource($this->connection)) { throw new DibiDriverException("Can't connect to DB"); } if (isset($config['database']) && !@mssql_select_db($config['database'], $this->connection)) { throw new DibiDriverException("Can't select DB '$config[database]'"); } } /** * Disconnects from a database * * @return void */ public function disconnect() { mssql_close($this->connection); } /** * Executes the SQL query * * @param string SQL statement. * @return bool have resultset? * @throws DibiDriverException */ public function query($sql) { $this->resultset = @mssql_query($sql, $this->connection); if ($this->resultset === FALSE) { throw new DibiDriverException('Query error', 0, $sql); } return is_resource($this->resultset); } /** * Gets the number of affected rows by the last INSERT, UPDATE or DELETE query * * @return int|FALSE number of rows or FALSE on error */ public function affectedRows() { return mssql_rows_affected($this->connection); } /** * Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query * * @return int|FALSE int on success or FALSE on failure */ public function insertId($sequence) { throw new BadMethodCallException(__METHOD__ . ' is not implemented'); } /** * Begins a transaction (if supported). * @return void * @throws DibiDriverException */ public function begin() { $this->query('BEGIN TRANSACTION'); } /** * Commits statements in a transaction. * @return void * @throws DibiDriverException */ public function commit() { $this->query('COMMIT'); } /** * Rollback changes in a transaction. * @return void * @throws DibiDriverException */ public function rollback() { $this->query('ROLLBACK'); } /** * Format to SQL command * * @param string value * @param string type (dibi::FIELD_TEXT, dibi::FIELD_BOOL, dibi::FIELD_DATE, dibi::FIELD_DATETIME, dibi::IDENTIFIER) * @return string formatted value * @throws InvalidArgumentException */ public function format($value, $type) { if ($type === dibi::FIELD_TEXT) return "'" . str_replace("'", "''", $value) . "'"; if ($type === dibi::IDENTIFIER) return '[' . str_replace('.', '].[', $value) . ']'; if ($type === dibi::FIELD_BOOL) return $value ? -1 : 0; if ($type === dibi::FIELD_DATE) return date("'Y-m-d'", $value); if ($type === dibi::FIELD_DATETIME) return date("'Y-m-d H:i:s'", $value); throw new InvalidArgumentException('Unsupported formatting type'); } /** * Injects LIMIT/OFFSET to the SQL query * * @param string &$sql The SQL query that will be modified. * @param int $limit * @param int $offset * @return void */ public function applyLimit(&$sql, $limit, $offset) { // offset suppot is missing... if ($limit >= 0) { $sql = 'SELECT TOP ' . (int) $limit . ' * FROM (' . $sql . ')'; } if ($offset) { throw new InvalidArgumentException('Offset is not implemented'); } } /** * Returns the number of rows in a result set * * @return int */ public function rowCount() { return mssql_num_rows($this->resultset); } /** * Fetches the row at current position and moves the internal cursor to the next position * internal usage only * * @return array|FALSE array on success, FALSE if no next record */ public function fetch() { return mssql_fetch_assoc($this->resultset); } /** * Moves cursor position without fetching row * * @param int the 0-based cursor pos to seek to * @return boolean TRUE on success, FALSE if unable to seek to specified record * @throws DibiException */ public function seek($row) { return mssql_data_seek($this->resultset, $row); } /** * Frees the resources allocated for this result set * * @return void */ public function free() { mssql_free_result($this->resultset); $this->resultset = NULL; } /** this is experimental */ public function buildMeta() { static $types = array( 'CHAR' => dibi::FIELD_TEXT, 'COUNTER' => dibi::FIELD_COUNTER, 'VARCHAR' => dibi::FIELD_TEXT, 'LONGCHAR' => dibi::FIELD_TEXT, 'INTEGER' => dibi::FIELD_INTEGER, 'DATETIME' => dibi::FIELD_DATETIME, 'CURRENCY' => dibi::FIELD_FLOAT, 'BIT' => dibi::FIELD_BOOL, 'LONGBINARY'=> dibi::FIELD_BINARY, 'SMALLINT' => dibi::FIELD_INTEGER, 'BYTE' => dibi::FIELD_INTEGER, 'BIGINT' => dibi::FIELD_INTEGER, 'INT' => dibi::FIELD_INTEGER, 'TINYINT' => dibi::FIELD_INTEGER, 'REAL' => dibi::FIELD_FLOAT, 'DOUBLE' => dibi::FIELD_FLOAT, 'DECIMAL' => dibi::FIELD_FLOAT, 'NUMERIC' => dibi::FIELD_FLOAT, 'MONEY' => dibi::FIELD_FLOAT, 'SMALLMONEY'=> dibi::FIELD_FLOAT, 'FLOAT' => dibi::FIELD_FLOAT, 'YESNO' => dibi::FIELD_BOOL, // and many others? ); $count = mssql_num_fields($this->resultset); $meta = array(); for ($index = 0; $index < $count; $index++) { $tmp = mssql_fetch_field($this->resultset, $index); $type = strtoupper($tmp->type); $info['native'] = $tmp->type; $info['type'] = isset($types[$type]) ? $types[$type] : dibi::FIELD_UNKNOWN; $info['length'] = $tmp->max_length; $info['table'] = $tmp->column_source; $meta[$tmp->name] = $info; } return $meta; } /** * Converts database error to DibiDriverException * * @throws DibiDriverException */ protected function throwException($sql=NULL) { throw new DibiDriverException(); } /** * Returns the connection resource * * @return mixed */ public function getResource() { return $this->connection; } /** * Returns the resultset resource * * @return mixed */ public function getResultResource() { return $this->resultset; } /** * Gets a information of the current database. * * @return DibiReflection */ function getDibiReflection() {} }