-<?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;

-}

-

-include_once(PHPBB_ROOT_PATH . 'includes/db/dbal.' . PHP_EXT);

-

-/**

-* Unified ODBC functions

-* Unified ODBC functions support any database having ODBC driver, for example Adabas D, IBM DB2, iODBC, Solid, Sybase SQL Anywhere...

-* Here we only support MSSQL Server 2000+ because of the provided schema

-*

-* @note number of bytes returned for returning data depends on odbc.defaultlrl php.ini setting.

-* If it is limited to 4K for example only 4K of data is returned max, resulting in incomplete theme data for example.

-* @note odbc.defaultbinmode may affect UTF8 characters

-*

-* @package dbal

-*/

-class phpbb_dbal_mssql_odbc 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 = $server . (($port) ? $port_delimiter . $port : '');

-

- $max_size = @ini_get('odbc.defaultlrl');

- if (!empty($max_size))

- {

- $unit = strtolower(substr($max_size, -1, 1));

- $max_size = (int) $max_size;

-

- if ($unit == 'k')

- {

- $max_size = floor($max_size / 1024);

- }

- else if ($unit == 'g')

- {

- $max_size *= 1024;

- }

- else if (is_numeric($unit))

- {

- $max_size = floor((int) ($max_size . $unit) / 1048576);

- }

- $max_size = max(8, $max_size) . 'M';

-

- @ini_set('odbc.defaultlrl', $max_size);

- }

-

- $this->db_connect_id = ($this->persistency) ? @odbc_pconnect($this->server, $this->user, $password) : @odbc_connect($this->server, $this->user, $password);

-

- return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');

- }

-

- /**

- * 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('#mssqlodbc_version')) === false)

- {

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

-

- $row = false;

- if ($result_id)

- {

- $row = @odbc_fetch_array($result_id);

- @odbc_free_result($result_id);

- }

-

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

-

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

- {

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

- }

- }

-

- if ($raw)

- {

- return $this->sql_server_version;

- }

-

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

- }

-

- /**

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

- */

- protected function _sql_query($query)

- {

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

- }

-

- /**

- * 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)

- {

- // We do not fetch the row for rownum == 0 because then the next resultset would be the second row

- for ($i = 0; $i < $offset; $i++)

- {

- if (!$this->sql_fetchrow($result))

- {

- return false;

- }

- }

- }

-

- return $result;

- }

-

- /**

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

- */

- protected function _sql_close()

- {

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

- break;

-

- case 'commit':

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

- break;

-

- case 'rollback':

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

- break;

- }

-

- return true;

- }

-

- /**

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

- */

- public function sql_affectedrows()

- {

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

- }

-

- /**

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

- */

- public function sql_nextid()

- {

- $result_id = @odbc_exec($this->db_connect_id, 'SELECT @@IDENTITY');

-

- if ($result_id)

- {

- if (@odbc_fetch_array($result_id))

- {

- $id = @odbc_result($result_id, 1);

- @odbc_free_result($result_id);

- return $id;

- }

- @odbc_free_result($result_id);

- }

-

- return false;

- }

-

- /**

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

- * @note number of bytes returned depends on odbc.defaultlrl php.ini setting. If it is limited to 4K for example only 4K of data is returned max.

- */

- protected function _sql_fetchrow($query_id)

- {

- return @odbc_fetch_array($query_id);

- }

-

- /**

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

- */

- protected function _sql_freeresult($query_id)

- {

- return @odbc_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 = '')

- {

- if ($type === 'INSERT')

- {

- $stmt = odbc_prepare($this->db_connect_id, "INSERT INTO $table (". implode(', ', array_keys($data)) . ") VALUES (" . substr(str_repeat('?, ', sizeof($data)) ,0, -1) . ')');

- }

- else

- {

- $query = "UPDATE $table SET ";

-

- $set = array();

- foreach (array_keys($data) as $key)

- {

- $set[] = "$key = ?";

- }

- $query .= implode(', ', $set);

-

- if ($where !== '')

- {

- $query .= $where;

- }

-

- $stmt = odbc_prepare($this->db_connect_id, $query);

- }

-

- // get the stmt onto the top of the function arguments

- array_unshift($data, $stmt);

-

- call_user_func_array('odbc_execute', $data);

- }

- */

-

- /**

- * 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()

- {

- return array(

- 'message' => @odbc_errormsg(),

- 'code' => @odbc_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':

- break;

-

- case 'fromcache':

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

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

-

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

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

- {

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

- }

- @odbc_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