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

   1 <?php
   2 /*
   3   V4.94 23 Jan 2007  (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.
   4
   5   First cut at the Netezza Driver by Josh Eldridge joshuae74#hotmail.com
   6  Based on the previous postgres drivers.
   7  http://www.netezza.com/
   8  Major Additions/Changes:
   9     MetaDatabasesSQL, MetaTablesSQL, MetaColumnsSQL
  10     Note: You have to have admin privileges to access the system tables
  11     Removed non-working keys code (Netezza has no concept of keys)
  12     Fixed the way data types and lengths are returned in MetaColumns()
  13     as well as added the default lengths for certain types
  14     Updated public variables for Netezza
  15     Still need to remove blob functions, as Netezza doesn't suppport blob
  16 */
  17 // security - hide paths
  18 if (!defined('ADODB_DIR')) die();
  19
  20 include_once(ADODB_DIR.'/drivers/adodb-postgres64.inc.php');
  21
  22 class ADODB_netezza extends ADODB_postgres64 {
  23     var $databaseType = 'netezza';
  24         var $dataProvider = 'netezza';
  25         var $hasInsertID = false;
  26         var $_resultid = false;
  27         var $concat_operator='||';
  28         var $random = 'random';
  29         var $metaDatabasesSQL = "select objname from _v_object_data where objtype='database' order by 1";
  30     var $metaTablesSQL = "select objname from _v_object_data where objtype='table' order by 1";
  31         var $isoDates = true; // accepts dates in ISO format
  32         var $sysDate = "CURRENT_DATE";
  33         var $sysTimeStamp = "CURRENT_TIMESTAMP";
  34         var $blobEncodeType = 'C';
  35         var $metaColumnsSQL = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
  36         var $metaColumnsSQL1 = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
  37         // netezza doesn't have keys. it does have distributions, so maybe this is
  38         // something that can be pulled from the system tables
  39         var $metaKeySQL = "";
  40         var $hasAffectedRows = true;
  41         var $hasLimit = true;
  42         var $true = 't';                // string that represents TRUE for a database
  43         var $false = 'f';               // string that represents FALSE for a database
  44         var $fmtDate = "'Y-m-d'";       // used by DBDate() as the default date format used by the database
  45         var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
  46         var $ansiOuter = true;
  47         var $autoRollback = true; // apparently pgsql does not autorollback properly before 4.3.4
  48                                                         // http://bugs.php.net/bug.php?id=25404
  49
  50
  51         function ADODB_netezza()
  52         {
  53
  54         }
  55
  56         function &MetaColumns($table,$upper=true)
  57         {
  58
  59         // Changed this function to support Netezza which has no concept of keys
  60         // could posisbly work on other things from the system table later.
  61
  62         global $ADODB_FETCH_MODE;
  63
  64                 $table = strtolower($table);
  65
  66                 $save = $ADODB_FETCH_MODE;
  67                 $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  68                 if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  69
  70                 $rs =& $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
  71                 if (isset($savem)) $this->SetFetchMode($savem);
  72                 $ADODB_FETCH_MODE = $save;
  73
  74                 if ($rs === false) return false;
  75
  76                 $retarr = array();
  77                 while (!$rs->EOF) {
  78                         $fld = new ADOFieldObject();
  79                         $fld->name = $rs->fields[0];
  80
  81                         // since we're returning type and length as one string,
  82                         // split them out here.
  83
  84                         if ($first = strstr($rs->fields[1], "(")) {
  85                          $fld->max_length = trim($first, "()");
  86                         } else {
  87                          $fld->max_length = -1;
  88                         }
  89
  90                         if ($first = strpos($rs->fields[1], "(")) {
  91                          $fld->type = substr($rs->fields[1], 0, $first);
  92                         } else {
  93                          $fld->type = $rs->fields[1];
  94                         }
  95
  96                         switch ($fld->type) {
  97                          case "byteint":
  98                          case "boolean":
  99                          $fld->max_length = 1;
 100                          break;
 101                          case "smallint":
 102                          $fld->max_length = 2;
 103                          break;
 104                          case "integer":
 105                          case "numeric":
 106                          case "date":
 107                          $fld->max_length = 4;
 108                          break;
 109                          case "bigint":
 110                          case "time":
 111                          case "timestamp":
 112                          $fld->max_length = 8;
 113                          break;
 114                          case "timetz":
 115                          case "time with time zone":
 116                          $fld->max_length = 12;
 117                          break;
 118                         }
 119
 120                         if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
 121                         else $retarr[($upper) ? strtoupper($fld->name) : $fld->name] = $fld;
 122
 123                         $rs->MoveNext();
 124                 }
 125                 $rs->Close();
 126                 return $retarr;
 127
 128         }
 129
 130
 131 }
 132
 133 /*--------------------------------------------------------------------------------------
 134          Class Name: Recordset
 135 --------------------------------------------------------------------------------------*/
 136
 137 class ADORecordSet_netezza extends ADORecordSet_postgres64
 138 {
 139         var $databaseType = "netezza";
 140         var $canSeek = true;
 141
 142         function ADORecordSet_netezza($queryID,$mode=false)
 143         {
 144                 if ($mode === false) {
 145                         global $ADODB_FETCH_MODE;
 146                         $mode = $ADODB_FETCH_MODE;
 147                 }
 148                 switch ($mode)
 149                 {
 150                 case ADODB_FETCH_NUM: $this->fetchMode = PGSQL_NUM; break;
 151                 case ADODB_FETCH_ASSOC:$this->fetchMode = PGSQL_ASSOC; break;
 152
 153                 case ADODB_FETCH_DEFAULT:
 154                 case ADODB_FETCH_BOTH:
 155                 default: $this->fetchMode = PGSQL_BOTH; break;
 156                 }
 157                 $this->adodbFetchMode = $mode;
 158                 $this->ADORecordSet($queryID);
 159         }
 160
 161         // _initrs modified to disable blob handling
 162         function _initrs()
 163         {
 164         global $ADODB_COUNTRECS;
 165                 $this->_numOfRows = ($ADODB_COUNTRECS)? @pg_numrows($this->_queryID):-1;
 166                 $this->_numOfFields = @pg_numfields($this->_queryID);
 167         }
 168
 169 }
 170 ?>