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   1  <?php
   2  /*
   3    @version   v5.20.3  01-Jan-2016
   4    @copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
   5    @copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
   6  
   7    First cut at the Netezza Driver by Josh Eldridge joshuae74#hotmail.com
   8   Based on the previous postgres drivers.
   9   http://www.netezza.com/
  10   Major Additions/Changes:
  11      MetaDatabasesSQL, MetaTablesSQL, MetaColumnsSQL
  12      Note: You have to have admin privileges to access the system tables
  13      Removed non-working keys code (Netezza has no concept of keys)
  14      Fixed the way data types and lengths are returned in MetaColumns()
  15      as well as added the default lengths for certain types
  16      Updated public variables for Netezza
  17      Still need to remove blob functions, as Netezza doesn't suppport blob
  18  */
  19  // security - hide paths
  20  if (!defined('ADODB_DIR')) die();
  21  
  22  include_once(ADODB_DIR.'/drivers/adodb-postgres64.inc.php');
  23  
  24  class ADODB_netezza extends ADODB_postgres64 {
  25      var $databaseType = 'netezza';
  26      var $dataProvider = 'netezza';
  27      var $hasInsertID = false;
  28      var $_resultid = false;
  29        var $concat_operator='||';
  30        var $random = 'random';
  31      var $metaDatabasesSQL = "select objname from _v_object_data where objtype='database' order by 1";
  32      var $metaTablesSQL = "select objname from _v_object_data where objtype='table' order by 1";
  33      var $isoDates = true; // accepts dates in ISO format
  34      var $sysDate = "CURRENT_DATE";
  35      var $sysTimeStamp = "CURRENT_TIMESTAMP";
  36      var $blobEncodeType = 'C';
  37      var $metaColumnsSQL = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
  38      var $metaColumnsSQL1 = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
  39      // netezza doesn't have keys. it does have distributions, so maybe this is
  40      // something that can be pulled from the system tables
  41      var $metaKeySQL = "";
  42      var $hasAffectedRows = true;
  43      var $hasLimit = true;
  44      var $true = 't';        // string that represents TRUE for a database
  45      var $false = 'f';        // string that represents FALSE for a database
  46      var $fmtDate = "'Y-m-d'";    // used by DBDate() as the default date format used by the database
  47      var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
  48      var $ansiOuter = true;
  49      var $autoRollback = true; // apparently pgsql does not autorollback properly before 4.3.4
  50                              // http://bugs.php.net/bug.php?id=25404
  51  
  52  
  53  	function __construct()
  54      {
  55  
  56      }
  57  
  58  	function MetaColumns($table,$upper=true)
  59      {
  60  
  61      // Changed this function to support Netezza which has no concept of keys
  62      // could posisbly work on other things from the system table later.
  63  
  64      global $ADODB_FETCH_MODE;
  65  
  66          $table = strtolower($table);
  67  
  68          $save = $ADODB_FETCH_MODE;
  69          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  70          if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  71  
  72          $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
  73          if (isset($savem)) $this->SetFetchMode($savem);
  74          $ADODB_FETCH_MODE = $save;
  75  
  76          if ($rs === false) return false;
  77  
  78          $retarr = array();
  79          while (!$rs->EOF) {
  80              $fld = new ADOFieldObject();
  81              $fld->name = $rs->fields[0];
  82  
  83              // since we're returning type and length as one string,
  84              // split them out here.
  85  
  86              if ($first = strstr($rs->fields[1], "(")) {
  87               $fld->max_length = trim($first, "()");
  88              } else {
  89               $fld->max_length = -1;
  90              }
  91  
  92              if ($first = strpos($rs->fields[1], "(")) {
  93               $fld->type = substr($rs->fields[1], 0, $first);
  94              } else {
  95               $fld->type = $rs->fields[1];
  96              }
  97  
  98              switch ($fld->type) {
  99               case "byteint":
 100               case "boolean":
 101               $fld->max_length = 1;
 102               break;
 103               case "smallint":
 104               $fld->max_length = 2;
 105               break;
 106               case "integer":
 107               case "numeric":
 108               case "date":
 109               $fld->max_length = 4;
 110               break;
 111               case "bigint":
 112               case "time":
 113               case "timestamp":
 114               $fld->max_length = 8;
 115               break;
 116               case "timetz":
 117               case "time with time zone":
 118               $fld->max_length = 12;
 119               break;
 120              }
 121  
 122              if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
 123              else $retarr[($upper) ? strtoupper($fld->name) : $fld->name] = $fld;
 124  
 125              $rs->MoveNext();
 126          }
 127          $rs->Close();
 128          return $retarr;
 129  
 130      }
 131  
 132  
 133  }
 134  
 135  /*--------------------------------------------------------------------------------------
 136       Class Name: Recordset
 137  --------------------------------------------------------------------------------------*/
 138  
 139  class ADORecordSet_netezza extends ADORecordSet_postgres64
 140  {
 141      var $databaseType = "netezza";
 142      var $canSeek = true;
 143  
 144  	function __construct($queryID,$mode=false)
 145      {
 146          parent::__construct($queryID,$mode);
 147      }
 148  
 149      // _initrs modified to disable blob handling
 150  	function _initrs()
 151      {
 152      global $ADODB_COUNTRECS;
 153          $this->_numOfRows = ($ADODB_COUNTRECS)? @pg_num_rows($this->_queryID):-1;
 154          $this->_numOfFields = @pg_num_fields($this->_queryID);
 155      }
 156  
 157  }