[Sommaire] [Imprimer]

   1  <?php
   2  
   3  
   4  /*
   5  V4.90 8 June 2006  (c) 2000-2006 John Lim (jlim#natsoft.com.my). All rights reserved.
   6    Released under both BSD license and Lesser GPL library license. 
   7    Whenever there is any discrepancy between the two licenses, 
   8    the BSD license will take precedence.
   9    Set tabs to 8.
  10   
  11  */ 
  12  
  13  class ADODB_pdo_mysql extends ADODB_pdo {
  14      var $metaTablesSQL = "SHOW TABLES";    
  15      var $metaColumnsSQL = "SHOW COLUMNS FROM %s";
  16      var $_bindInputArray = false;
  17      var $sysDate = 'CURDATE()';
  18      var $sysTimeStamp = 'NOW()';
  19      
  20  	function _init($parentDriver)
  21      {
  22      
  23          $parentDriver->hasTransactions = false;
  24          $parentDriver->_bindInputArray = true;
  25          $parentDriver->hasInsertID = true;
  26          $parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);
  27      }
  28      
  29  	function ServerInfo()
  30      {
  31          $arr['description'] = ADOConnection::GetOne("select version()");
  32          $arr['version'] = ADOConnection::_findvers($arr['description']);
  33          return $arr;
  34      }
  35      
  36      function &MetaTables($ttype=false,$showSchema=false,$mask=false) 
  37      {    
  38          $save = $this->metaTablesSQL;
  39          if ($showSchema && is_string($showSchema)) {
  40              $this->metaTablesSQL .= " from $showSchema";
  41          }
  42          
  43          if ($mask) {
  44              $mask = $this->qstr($mask);
  45              $this->metaTablesSQL .= " like $mask";
  46          }
  47          $ret =& ADOConnection::MetaTables($ttype,$showSchema);
  48          
  49          $this->metaTablesSQL = $save;
  50          return $ret;
  51      }
  52      
  53  	function SetTransactionMode( $transaction_mode ) 
  54      {
  55          $this->_transmode  = $transaction_mode;
  56          if (empty($transaction_mode)) {
  57              $this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ');
  58              return;
  59          }
  60          if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
  61          $this->Execute("SET SESSION TRANSACTION ".$transaction_mode);
  62      }
  63      
  64       function &MetaColumns($table) 
  65      {
  66          $this->_findschema($table,$schema);
  67          if ($schema) {
  68              $dbName = $this->database;
  69              $this->SelectDB($schema);
  70          }
  71          global $ADODB_FETCH_MODE;
  72          $save = $ADODB_FETCH_MODE;
  73          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  74          
  75          if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  76          $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
  77          
  78          if ($schema) {
  79              $this->SelectDB($dbName);
  80          }
  81          
  82          if (isset($savem)) $this->SetFetchMode($savem);
  83          $ADODB_FETCH_MODE = $save;
  84          if (!is_object($rs)) {
  85              $false = false;
  86              return $false;
  87          }
  88              
  89          $retarr = array();
  90          while (!$rs->EOF){
  91              $fld = new ADOFieldObject();
  92              $fld->name = $rs->fields[0];
  93              $type = $rs->fields[1];
  94              
  95              // split type into type(length):
  96              $fld->scale = null;
  97              if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
  98                  $fld->type = $query_array[1];
  99                  $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 100                  $fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
 101              } elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
 102                  $fld->type = $query_array[1];
 103                  $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 104              } elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
 105                  $fld->type = $query_array[1];
 106                  $arr = explode(",",$query_array[2]);
 107                  $fld->enums = $arr;
 108                  $zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
 109                  $fld->max_length = ($zlen > 0) ? $zlen : 1;
 110              } else {
 111                  $fld->type = $type;
 112                  $fld->max_length = -1;
 113              }
 114              $fld->not_null = ($rs->fields[2] != 'YES');
 115              $fld->primary_key = ($rs->fields[3] == 'PRI');
 116              $fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
 117              $fld->binary = (strpos($type,'blob') !== false);
 118              $fld->unsigned = (strpos($type,'unsigned') !== false);
 119                  
 120              if (!$fld->binary) {
 121                  $d = $rs->fields[4];
 122                  if ($d != '' && $d != 'NULL') {
 123                      $fld->has_default = true;
 124                      $fld->default_value = $d;
 125                  } else {
 126                      $fld->has_default = false;
 127                  }
 128              }
 129              
 130              if ($save == ADODB_FETCH_NUM) {
 131                  $retarr[] = $fld;
 132              } else {
 133                  $retarr[strtoupper($fld->name)] = $fld;
 134              }
 135                  $rs->MoveNext();
 136              }
 137          
 138              $rs->Close();
 139              return $retarr;    
 140      }
 141          
 142      
 143      // parameters use PostgreSQL convention, not MySQL
 144      function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0)
 145      {
 146          $offsetStr =($offset>=0) ? "$offset," : '';
 147          // jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220
 148          if ($nrows < 0) $nrows = '18446744073709551615'; 
 149          
 150          if ($secs)
 151              $rs =& $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr);
 152          else
 153              $rs =& $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr);
 154          return $rs;
 155      }
 156  }
 157  ?>