-<?php

-/**

-*

-* @package dbal

-* @version $Id$

-* @copyright (c) 2005 phpBB Group

-* @license http://opensource.org/licenses/gpl-license.php GNU Public License

-*

-*/

-

-/**

-* @ignore

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* MSSQL Database Abstraction Layer

-* Minimum Requirement is MSSQL 2000+

-* @package dbal

-*/

-class phpbb_dbal_mssql extends phpbb_dbal

-{

- /**

- * @var string Database type. No distinction between versions or used extensions.

- */

- public $dbms_type = 'mssql';

-

- /**

- * @var array Database type map, column layout information

- */

- public $dbms_type_map = array(

- 'INT:' => '[int]',

- 'BINT' => '[float]',

- 'UINT' => '[int]',

- 'UINT:' => '[int]',

- 'TINT:' => '[int]',

- 'USINT' => '[int]',

- 'BOOL' => '[int]',

- 'VCHAR' => '[varchar] (255)',

- 'VCHAR:' => '[varchar] (%d)',

- 'CHAR:' => '[char] (%d)',

- 'XSTEXT' => '[varchar] (1000)',

- 'STEXT' => '[varchar] (3000)',

- 'TEXT' => '[varchar] (8000)',

- 'MTEXT' => '[text]',

- 'XSTEXT_UNI'=> '[varchar] (100)',

- 'STEXT_UNI' => '[varchar] (255)',

- 'TEXT_UNI' => '[varchar] (4000)',

- 'MTEXT_UNI' => '[text]',

- 'TIMESTAMP' => '[int]',

- 'DECIMAL' => '[float]',

- 'DECIMAL:' => '[float]',

- 'PDECIMAL' => '[float]',

- 'PDECIMAL:' => '[float]',

- 'VCHAR_UNI' => '[varchar] (255)',

- 'VCHAR_UNI:'=> '[varchar] (%d)',

- 'VARBINARY' => '[varchar] (255)',

- );

-

- /**

- * Connect to server. See {@link phpbb_dbal::sql_connect() sql_connect()} for details.

- */

- public function sql_connect($server, $user, $password, $database, $port = false, $persistency = false , $new_link = false)

- {

- $this->persistency = $persistency;

- $this->user = $user;

- $this->dbname = $database;

- $this->port = $port;

-

- $port_delimiter = (defined('PHP_OS') && substr(PHP_OS, 0, 3) === 'WIN') ? ',' : ':';

- $this->server = $server . (($this->port) ? $port_delimiter . $this->port : '');

-

- @ini_set('mssql.charset', 'UTF-8');

- @ini_set('mssql.textlimit', 2147483647);

- @ini_set('mssql.textsize', 2147483647);

-

- $this->db_connect_id = ($this->persistency) ? @mssql_pconnect($this->server, $this->user, $password, $new_link) : @mssql_connect($this->server, $this->user, $password, $new_link);

-

- if (!$this->db_connect_id || !$this->dbname)

- {

- return $this->sql_error(phpbb::$last_notice['message']);

- }

-

- if (!@mssql_select_db($this->dbname, $this->db_connect_id))

- {

- return $this->sql_error('');

- }

-

- return $this->db_connect_id;

- }

-

- /**

- * Version information about used database. See {@link phpbb_dbal::sql_server_info() sql_server_info()} for details.

- */

- public function sql_server_info($raw = false)

- {

- if (!phpbb::registered('acm') || ($this->sql_server_version = phpbb::$acm->get('#mssql_version')) === false)

- {

- $result_id = @mssql_query("SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY('productlevel'), SERVERPROPERTY('edition')", $this->db_connect_id);

-

- $row = false;

- if ($result_id)

- {

- $row = @mssql_fetch_assoc($result_id);

- @mssql_free_result($result_id);

- }

-

- $this->sql_server_version = ($row) ? trim(implode(' ', $row)) : 0;

-

- if (phpbb::registered('acm'))

- {

- phpbb::$acm->put('#mssql_version', $this->sql_server_version);

- }

- }

-

- if ($raw)

- {

- return $this->sql_server_version;

- }

-

- return ($this->sql_server_version) ? 'MSSQL<br />' . $this->sql_server_version : 'MSSQL';

- }

-

- /**

- * DB-specific base query method. See {@link phpbb_dbal::_sql_query() _sql_query()} for details.

- */

- protected function _sql_query($query)

- {

- return @mssql_query($query, $this->db_connect_id);

- }

-

- /**

- * Build LIMIT query and run it. See {@link phpbb_dbal::_sql_query_limit() _sql_query_limit()} for details.

- */

- protected function _sql_query_limit($query, $total, $offset, $cache_ttl)

- {

- // Since TOP is only returning a set number of rows we won't need it if total is set to 0 (return all rows)

- if ($total)

- {

- // We need to grab the total number of rows + the offset number of rows to get the correct result

- if (strpos($query, 'SELECT DISTINCT') === 0)

- {

- $query = 'SELECT DISTINCT TOP ' . ($total + $offset) . ' ' . substr($query, 15);

- }

- else

- {

- $query = 'SELECT TOP ' . ($total + $offset) . ' ' . substr($query, 6);

- }

- }

-

- $result = $this->sql_query($query, $cache_ttl);

-

- // Seek by $offset rows

- if ($offset)

- {

- @mssql_data_seek($result, $offset);

- }

-

- return $result;

- }

-

- /**

- * Close sql connection. See {@link phpbb_dbal::_sql_close() _sql_close()} for details.

- */

- protected function _sql_close()

- {

- return @mssql_close($this->db_connect_id);

- }

-

- /**

- * SQL Transaction. See {@link phpbb_dbal::_sql_transaction() _sql_transaction()} for details.

- */

- protected function _sql_transaction($status)

- {

- switch ($status)

- {

- case 'begin':

- return @mssql_query('BEGIN TRANSACTION', $this->db_connect_id);

- break;

-

- case 'commit':

- return @mssql_query('COMMIT TRANSACTION', $this->db_connect_id);

- break;

-

- case 'rollback':

- return @mssql_query('ROLLBACK TRANSACTION', $this->db_connect_id);

- break;

- }

-

- return true;

- }

-

- /**

- * Return number of affected rows. See {@link phpbb_dbal::sql_affectedrows() sql_affectedrows()} for details.

- */

- public function sql_affectedrows()

- {

- return ($this->db_connect_id) ? @mssql_rows_affected($this->db_connect_id) : false;

- }

-

- /**

- * Get last inserted id after insert statement. See {@link phpbb_dbal::sql_nextid() sql_nextid()} for details.

- */

- public function sql_nextid()

- {

- $result_id = @mssql_query('SELECT SCOPE_IDENTITY()', $this->db_connect_id);

-

- if ($result_id)

- {

- if ($row = @mssql_fetch_assoc($result_id))

- {

- @mssql_free_result($result_id);

- return $row['computed'];

- }

- @mssql_free_result($result_id);

- }

-

- return false;

- }

-

- /**

- * Fetch current row. See {@link phpbb_dbal::_sql_fetchrow() _sql_fetchrow()} for details.

- */

- protected function _sql_fetchrow($query_id)

- {

- $row = @mssql_fetch_assoc($query_id);

-

- // I hope i am able to remove this later... hopefully only a PHP or MSSQL bug

- if ($row)

- {

- foreach ($row as $key => $value)

- {

- $row[$key] = ($value === ' ' || $value === NULL) ? '' : $value;

- }

- }

-

- return $row;

- }

-

- /**

- * Free query result. See {@link phpbb_dbal::_sql_freeresult() _sql_freeresult()} for details.

- */

- protected function _sql_freeresult($query_id)

- {

- return @mssql_free_result($query_id);

- }

-

- /**

- * Correctly adjust LIKE expression for special characters. See {@link phpbb_dbal::_sql_like_expression() _sql_like_expression()} for details.

- */

- protected function _sql_like_expression($expression)

- {

- return $expression . " ESCAPE '\\'";

- }

-

- /**

- * Escape string used in sql query. See {@link phpbb_dbal::sql_escape() sql_escape()} for details.

- */

- public function sql_escape($msg)

- {

- return str_replace(array("'", "\0"), array("''", ''), $msg);

- }

-

- /**

- * Expose a DBMS specific function. See {@link phpbb_dbal::sql_function() sql_function()} for details.

- */

- public function sql_function($type, $col)

- {

- switch ($type)

- {

- case 'length_varchar':

- case 'length_text':

- return 'DATALENGTH(' . $col . ')';

- break;

- }

- }

-

- /**

- * Handle data by using prepared statements. See {@link phpbb_dbal::sql_handle_data() sql_handle_data()} for details.

- public function sql_handle_data($type, $table, $data, $where = '')

- {

- }

- */

-

- /**

- * Build DB-specific query bits. See {@link phpbb_dbal::_sql_custom_build() _sql_custom_build()} for details.

- */

- protected function _sql_custom_build($stage, $data)

- {

- return $data;

- }

-

- /**

- * return sql error array. See {@link phpbb_dbal::_sql_error() _sql_error()} for details.

- */

- protected function _sql_error()

- {

- $error = array(

- 'message' => @mssql_get_last_message(),

- 'code' => ''

- );

-

- // Get error code number

- $result_id = @mssql_query('SELECT @@ERROR as code', $this->db_connect_id);

- if ($result_id)

- {

- $row = @mssql_fetch_assoc($result_id);

- $error['code'] = $row['code'];

- @mssql_free_result($result_id);

- }

-

- // Get full error message if possible

- $sql = 'SELECT CAST(description as varchar(255)) as message

- FROM master.dbo.sysmessages

- WHERE error = ' . $error['code'];

- $result_id = @mssql_query($sql);

-

- if ($result_id)

- {

- $row = @mssql_fetch_assoc($result_id);

- if (!empty($row['message']))

- {

- $error['message'] .= '<br />' . $row['message'];

- }

- @mssql_free_result($result_id);

- }

-

- return $error;

- }

-

- /**

- * Run DB-specific code to build SQL Report to explain queries, show statistics and runtime information. See {@link phpbb_dbal::_sql_report() _sql_report()} for details.

- */

- protected function _sql_report($mode, $query = '')

- {

- switch ($mode)

- {

- case 'start':

- $html_table = false;

- @mssql_query('SET SHOWPLAN_TEXT ON;', $this->db_connect_id);

- if ($result = @mssql_query($query, $this->db_connect_id))

- {

- @mssql_next_result($result);

- while ($row = @mssql_fetch_row($result))

- {

- $html_table = $this->sql_report('add_select_row', $query, $html_table, $row);

- }

- }

- @mssql_query('SET SHOWPLAN_TEXT OFF;', $this->db_connect_id);

- @mssql_free_result($result);

-

- if ($html_table)

- {

- $this->html_hold .= '</table>';

- }

- break;

-

- case 'fromcache':

- $endtime = explode(' ', microtime());

- $endtime = $endtime[0] + $endtime[1];

-

- $result = @mssql_query($query, $this->db_connect_id);

- while ($void = @mssql_fetch_assoc($result))

- {

- // Take the time spent on parsing rows into account

- }

- @mssql_free_result($result);

-

- $splittime = explode(' ', microtime());

- $splittime = $splittime[0] + $splittime[1];

-

- $this->sql_report('record_fromcache', $query, $endtime, $splittime);

-

- break;

- }

- }

-}

-

-?> \ No newline at end of file