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