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<?php
/**
* Microsoft SQL Server ADO driver.
*
* Requires ADO and MSSQL client. Works only on MS Windows.
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
if (!defined('_ADODB_ADO_LAYER')) {
include_once(ADODB_DIR . "/drivers/adodb-ado5.inc.php");
}
class ADODB_ado_mssql extends ADODB_ado {
var $databaseType = 'ado_mssql';
var $hasTop = 'top';
var $hasInsertID = true;
var $sysDate = 'convert(datetime,convert(char,GetDate(),102),102)';
var $sysTimeStamp = 'GetDate()';
var $leftOuter = '*=';
var $rightOuter = '=*';
var $ansiOuter = true; // for mssql7 or later
var $substr = "substring";
var $length = 'len';
var $_dropSeqSQL = "drop table %s";
//var $_inTransaction = 1; // always open recordsets, so no transaction problems.
protected function _insertID($table = '', $column = '')
{
return $this->GetOne('select SCOPE_IDENTITY()');
}
function _affectedrows()
{
return $this->GetOne('select @@rowcount');
}
function SetTransactionMode( $transaction_mode )
{
$this->_transmode = $transaction_mode;
if (empty($transaction_mode)) {
$this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
return;
}
if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
$this->Execute("SET TRANSACTION ".$transaction_mode);
}
function qStr($s, $magic_quotes=false)
{
$s = ADOConnection::qStr($s);
return str_replace("\0", "\\\\000", $s);
}
function MetaColumns($table, $normalize=true)
{
$table = strtoupper($table);
$arr= array();
$dbc = $this->_connectionID;
$osoptions = array();
$osoptions[0] = null;
$osoptions[1] = null;
$osoptions[2] = $table;
$osoptions[3] = null;
$adors=@$dbc->OpenSchema(4, $osoptions);//tables
if ($adors){
while (!$adors->EOF){
$fld = new ADOFieldObject();
$c = $adors->Fields(3);
$fld->name = $c->Value;
$fld->type = 'CHAR'; // cannot discover type in ADO!
$fld->max_length = -1;
$arr[strtoupper($fld->name)]=$fld;
$adors->MoveNext();
}
$adors->Close();
}
$false = false;
return empty($arr) ? $false : $arr;
}
function CreateSequence($seq='adodbseq',$start=1)
{
$this->Execute('BEGIN TRANSACTION adodbseq');
$start -= 1;
$this->Execute("create table $seq (id float(53))");
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
$this->Execute('ROLLBACK TRANSACTION adodbseq');
return false;
}
$this->Execute('COMMIT TRANSACTION adodbseq');
return true;
}
function GenID($seq='adodbseq',$start=1)
{
//$this->debug=1;
$this->Execute('BEGIN TRANSACTION adodbseq');
$ok = $this->Execute("update $seq with (tablock,holdlock) set id = id + 1");
if (!$ok) {
$this->Execute("create table $seq (id float(53))");
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
$this->Execute('ROLLBACK TRANSACTION adodbseq');
return false;
}
$this->Execute('COMMIT TRANSACTION adodbseq');
return $start;
}
$num = $this->GetOne("select id from $seq");
$this->Execute('COMMIT TRANSACTION adodbseq');
return $num;
// in old implementation, pre 1.90, we returned GUID...
//return $this->GetOne("SELECT CONVERT(varchar(255), NEWID()) AS 'Char'");
}
} // end class
class ADORecordSet_ado_mssql extends ADORecordSet_ado {
var $databaseType = 'ado_mssql';
}
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