/www/libs/dibi/drivers/mssql2005.php
PHP | 403 lines | 271 code | 48 blank | 84 comment | 8 complexity | 72723be37763e3b4938c364b76ddca5f MD5 | raw file
Possible License(s): BSD-3-Clause, MIT
- <?php
- /**
- * dibi - tiny'n'smart database abstraction layer
- * ----------------------------------------------
- *
- * @copyright Copyright (c) 2005, 2010 David Grudl
- * @license http://dibiphp.com/license dibi license
- * @link http://dibiphp.com
- * @package dibi\drivers
- */
- /**
- * The dibi driver for MS SQL Driver 2005 database.
- *
- * Connection options:
- * - 'host' - the MS SQL server host name. It can also include a port number (hostname:port)
- * - 'options' - connection info array {@link http://msdn.microsoft.com/en-us/library/cc296161(SQL.90).aspx}
- * - 'lazy' - if TRUE, connection will be established only when required
- * - 'charset' - character encoding to set (default is UTF-8)
- * - 'resource' - connection resource (optional)
- *
- * @copyright Copyright (c) 2005, 2010 David Grudl
- * @package dibi\drivers
- */
- class DibiMsSql2005Driver extends DibiObject implements IDibiDriver
- {
- /** @var resource Connection resource */
- private $connection;
- /** @var resource Resultset resource */
- private $resultSet;
- /**
- * @throws DibiException
- */
- public function __construct()
- {
- if (!extension_loaded('sqlsrv')) {
- throw new DibiDriverException("PHP extension 'sqlsrv' is not loaded.");
- }
- }
- /**
- * Connects to a database.
- * @return void
- * @throws DibiException
- */
- public function connect(array &$config)
- {
- if (isset($config['resource'])) {
- $this->connection = $config['resource'];
- } elseif (isset($config['options'])) {
- $this->connection = sqlsrv_connect($config['host'], (array) $config['options']);
- } else {
- $this->connection = sqlsrv_connect($config['host']);
- }
- if (!is_resource($this->connection)) {
- $info = sqlsrv_errors();
- throw new DibiDriverException($info[0]['message'], $info[0]['code']);
- }
- }
- /**
- * Disconnects from a database.
- * @return void
- */
- public function disconnect()
- {
- sqlsrv_close($this->connection);
- }
- /**
- * Executes the SQL query.
- * @param string SQL statement.
- * @return IDibiDriver|NULL
- * @throws DibiDriverException
- */
- public function query($sql)
- {
- $this->resultSet = sqlsrv_query($this->connection, $sql);
- if ($this->resultSet === FALSE) {
- $info = sqlsrv_errors();
- throw new DibiDriverException($info[0]['message'], $info[0]['code'], $sql);
- }
- return is_resource($this->resultSet) ? clone $this : NULL;
- }
- /**
- * Gets the number of affected rows by the last INSERT, UPDATE or DELETE query.
- * @return int|FALSE number of rows or FALSE on error
- */
- public function getAffectedRows()
- {
- return sqlsrv_rows_affected($this->resultSet);
- }
- /**
- * 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 getInsertId($sequence)
- {
- $res = sqlsrv_query($this->connection, 'SELECT @@IDENTITY');
- if (is_resource($res)) {
- $row = sqlsrv_fetch_array($res, SQLSRV_FETCH_NUMERIC);
- return $row[0];
- }
- return FALSE;
- }
- /**
- * Begins a transaction (if supported).
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function begin($savepoint = NULL)
- {
- $this->query('BEGIN TRANSACTION');
- }
- /**
- * Commits statements in a transaction.
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function commit($savepoint = NULL)
- {
- $this->query('COMMIT');
- }
- /**
- * Rollback changes in a transaction.
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function rollback($savepoint = NULL)
- {
- $this->query('ROLLBACK');
- }
- /**
- * Is in transaction?
- * @return bool
- */
- public function inTransaction()
- {
- throw new NotSupportedException('MSSQL 2005 driver does not support transaction testing.');
- }
- /**
- * Returns the connection resource.
- * @return mixed
- */
- public function getResource()
- {
- return $this->connection;
- }
- /********************* SQL ****************d*g**/
- /**
- * Encodes data for use in a SQL statement.
- * @param mixed value
- * @param string type (dibi::TEXT, dibi::BOOL, ...)
- * @return string encoded value
- * @throws InvalidArgumentException
- */
- public function escape($value, $type)
- {
- switch ($type) {
- case dibi::TEXT:
- case dibi::BINARY:
- return "'" . str_replace("'", "''", $value) . "'";
- case dibi::IDENTIFIER:
- // @see http://msdn.microsoft.com/en-us/library/ms176027.aspx
- $value = str_replace(array('[', ']'), array('[[', ']]'), $value);
- return '[' . str_replace('.', '].[', $value) . ']';
- case dibi::BOOL:
- return $value ? 1 : 0;
- case dibi::DATE:
- return $value instanceof DateTime ? $value->format("'Y-m-d'") : date("'Y-m-d'", $value);
- case dibi::DATETIME:
- return $value instanceof DateTime ? $value->format("'Y-m-d H:i:s'") : date("'Y-m-d H:i:s'", $value);
- default:
- throw new InvalidArgumentException('Unsupported type.');
- }
- }
- /**
- * Decodes data from result set.
- * @param string value
- * @param string type (dibi::BINARY)
- * @return string decoded value
- * @throws InvalidArgumentException
- */
- public function unescape($value, $type)
- {
- if ($type === dibi::BINARY) {
- return $value;
- }
- throw new InvalidArgumentException('Unsupported type.');
- }
- /**
- * Injects LIMIT/OFFSET to the SQL query.
- * @param string &$sql The SQL query that will be modified.
- * @param int $limit
- * @param int $offset
- * @return void
- */
- public function applyLimit(&$sql, $limit, $offset)
- {
- // offset support is missing
- if ($limit >= 0) {
- $sql = 'SELECT TOP ' . (int) $limit . ' * FROM (' . $sql . ')';
- }
- if ($offset) {
- throw new NotImplementedException('Offset is not implemented.');
- }
- }
- /********************* result set ****************d*g**/
- /**
- * Returns the number of rows in a result set.
- * @return int
- */
- public function getRowCount()
- {
- throw new NotSupportedException('Row count is not available for unbuffered queries.');
- }
- /**
- * Fetches the row at current position and moves the internal cursor to the next position.
- * @param bool TRUE for associative array, FALSE for numeric
- * @return array array on success, nonarray if no next record
- * @internal
- */
- public function fetch($assoc)
- {
- return sqlsrv_fetch_array($this->resultSet, $assoc ? SQLSRV_FETCH_ASSOC : SQLSRV_FETCH_NUMERIC);
- }
- /**
- * Moves cursor position without fetching row.
- * @param int the 0-based cursor pos to seek to
- * @return boolean TRUE on success, FALSE if unable to seek to specified record
- */
- public function seek($row)
- {
- throw new NotSupportedException('Cannot seek an unbuffered result set.');
- }
- /**
- * Frees the resources allocated for this result set.
- * @return void
- */
- public function free()
- {
- sqlsrv_free_stmt($this->resultSet);
- $this->resultSet = NULL;
- }
- /**
- * Returns metadata for all columns in a result set.
- * @return array
- */
- public function getColumnsMeta()
- {
- $count = sqlsrv_num_fields($this->resultSet);
- $res = array();
- for ($i = 0; $i < $count; $i++) {
- $row = (array) sqlsrv_field_metadata($this->resultSet, $i);
- $res[] = array(
- 'name' => $row['Name'],
- 'fullname' => $row['Name'],
- 'nativetype' => $row['Type'],
- );
- }
- return $res;
- }
- /**
- * Returns the result set resource.
- * @return mixed
- */
- public function getResultResource()
- {
- return $this->resultSet;
- }
- /********************* reflection ****************d*g**/
- /**
- * Returns list of tables.
- * @return array
- */
- public function getTables()
- {
- throw new NotImplementedException;
- }
- /**
- * Returns metadata for all columns in a table.
- * @param string
- * @return array
- */
- public function getColumns($table)
- {
- throw new NotImplementedException;
- }
- /**
- * Returns metadata for all indexes in a table.
- * @param string
- * @return array
- */
- public function getIndexes($table)
- {
- throw new NotImplementedException;
- }
- /**
- * Returns metadata for all foreign keys in a table.
- * @param string
- * @return array
- */
- public function getForeignKeys($table)
- {
- throw new NotImplementedException;
- }
- }