lib/adodb/drivers/adodb-ado_mssql.inc.php

   1 <?php
   2 /*
   3 V4.94 23 Jan 2007  (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.
   4   Released under both BSD license and Lesser GPL library license.
   5   Whenever there is any discrepancy between the two licenses,
   6   the BSD license will take precedence.
   7 Set tabs to 4 for best viewing.
   8
   9   Latest version is available at http://adodb.sourceforge.net
  10
  11   Microsoft SQL Server ADO data driver. Requires ADO and MSSQL client.
  12   Works only on MS Windows.
  13
  14   Warning: Some versions of PHP (esp PHP4) leak memory when ADO/COM is used.
  15   Please check http://bugs.php.net/ for more info.
  16 */
  17
  18 // security - hide paths
  19 if (!defined('ADODB_DIR')) die();
  20
  21 if (!defined('_ADODB_ADO_LAYER')) {
  22         if (PHP_VERSION >= 5) include(ADODB_DIR."/drivers/adodb-ado5.inc.php");
  23         else include(ADODB_DIR."/drivers/adodb-ado.inc.php");
  24 }
  25
  26
  27 class  ADODB_ado_mssql extends ADODB_ado {
  28         var $databaseType = 'ado_mssql';
  29         var $hasTop = 'top';
  30         var $hasInsertID = true;
  31         var $sysDate = 'convert(datetime,convert(char,GetDate(),102),102)';
  32         var $sysTimeStamp = 'GetDate()';
  33         var $leftOuter = '*=';
  34         var $rightOuter = '=*';
  35         var $ansiOuter = true; // for mssql7 or later
  36         var $substr = "substring";
  37         var $length = 'len';
  38         var $_dropSeqSQL = "drop table %s";
  39
  40         //var $_inTransaction = 1; // always open recordsets, so no transaction problems.
  41
  42         function ADODB_ado_mssql()
  43         {
  44                 $this->ADODB_ado();
  45         }
  46
  47         function _insertid()
  48         {
  49                 return $this->GetOne('select @@identity');
  50         }
  51
  52         function _affectedrows()
  53         {
  54                 return $this->GetOne('select @@rowcount');
  55         }
  56
  57         function SetTransactionMode( $transaction_mode )
  58         {
  59                 $this->_transmode  = $transaction_mode;
  60                 if (empty($transaction_mode)) {
  61                         $this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
  62                         return;
  63                 }
  64                 if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
  65                 $this->Execute("SET TRANSACTION ".$transaction_mode);
  66         }
  67
  68         function qstr($s,$magic_quotes=false)
  69         {
  70                 $s = ADOConnection::qstr($s, $magic_quotes);
  71                 return str_replace("\0", "\\\\000", $s);
  72         }
  73
  74         function MetaColumns($table)
  75         {
  76         $table = strtoupper($table);
  77         $arr= array();
  78         $dbc = $this->_connectionID;
  79
  80         $osoptions = array();
  81         $osoptions[0] = null;
  82         $osoptions[1] = null;
  83         $osoptions[2] = $table;
  84         $osoptions[3] = null;
  85
  86         $adors=@$dbc->OpenSchema(4, $osoptions);//tables
  87
  88         if ($adors){
  89                 while (!$adors->EOF){
  90                         $fld = new ADOFieldObject();
  91                         $c = $adors->Fields(3);
  92                         $fld->name = $c->Value;
  93                         $fld->type = 'CHAR'; // cannot discover type in ADO!
  94                         $fld->max_length = -1;
  95                         $arr[strtoupper($fld->name)]=$fld;
  96
  97                         $adors->MoveNext();
  98                 }
  99                 $adors->Close();
 100         }
 101         $false = false;
 102                 return empty($arr) ? $false : $arr;
 103         }
 104
 105         function CreateSequence($seq='adodbseq',$start=1)
 106         {
 107
 108                 $this->Execute('BEGIN TRANSACTION adodbseq');
 109                 $start -= 1;
 110                 $this->Execute("create table $seq (id float(53))");
 111                 $ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
 112                 if (!$ok) {
 113                                 $this->Execute('ROLLBACK TRANSACTION adodbseq');
 114                                 return false;
 115                 }
 116                 $this->Execute('COMMIT TRANSACTION adodbseq');
 117                 return true;
 118         }
 119
 120         function GenID($seq='adodbseq',$start=1)
 121         {
 122                 //$this->debug=1;
 123                 $this->Execute('BEGIN TRANSACTION adodbseq');
 124                 $ok = $this->Execute("update $seq with (tablock,holdlock) set id = id + 1");
 125                 if (!$ok) {
 126                         $this->Execute("create table $seq (id float(53))");
 127                         $ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
 128                         if (!$ok) {
 129                                 $this->Execute('ROLLBACK TRANSACTION adodbseq');
 130                                 return false;
 131                         }
 132                         $this->Execute('COMMIT TRANSACTION adodbseq');
 133                         return $start;
 134                 }
 135                 $num = $this->GetOne("select id from $seq");
 136                 $this->Execute('COMMIT TRANSACTION adodbseq');
 137                 return $num;
 138
 139                 // in old implementation, pre 1.90, we returned GUID...
 140                 //return $this->GetOne("SELECT CONVERT(varchar(255), NEWID()) AS 'Char'");
 141         }
 142
 143         } // end class
 144
 145         class  ADORecordSet_ado_mssql extends ADORecordSet_ado {
 146
 147         var $databaseType = 'ado_mssql';
 148
 149         function ADORecordSet_ado_mssql($id,$mode=false)
 150         {
 151                 return $this->ADORecordSet_ado($id,$mode);
 152         }
 153 }
 154 ?>