[6779] | 1 | <?php |
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| 2 | /* |
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| 3 | V4.94 23 Jan 2007 (c) 2006 John Lim (jlim#natsoft.com.my). All rights reserved. |
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| 4 | |
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| 5 | This is a version of the ADODB driver for DB2. It uses the 'ibm_db2' PECL extension |
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| 6 | for PHP (http://pecl.php.net/package/ibm_db2), which in turn requires DB2 V8.2.2 or |
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| 7 | higher. |
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| 8 | |
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| 9 | Originally tested with PHP 5.1.1 and Apache 2.0.55 on Windows XP SP2. |
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| 10 | More recently tested with PHP 5.1.2 and Apache 2.0.55 on Windows XP SP2. |
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| 11 | |
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| 12 | This file was ported from "adodb-odbc.inc.php" by Larry Menard, "larry.menard#rogers.com". |
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| 13 | I ripped out what I believed to be a lot of redundant or obsolete code, but there are |
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| 14 | probably still some remnants of the ODBC support in this file; I'm relying on reviewers |
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| 15 | of this code to point out any other things that can be removed. |
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| 16 | */ |
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| 17 | |
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| 18 | // security - hide paths |
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| 19 | if (!defined('ADODB_DIR')) die(); |
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| 20 | |
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| 21 | define("_ADODB_DB2_LAYER", 2 ); |
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| 22 | |
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| 23 | /*-------------------------------------------------------------------------------------- |
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| 24 | --------------------------------------------------------------------------------------*/ |
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| 25 | |
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| 26 | |
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| 27 | class ADODB_db2 extends ADOConnection { |
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| 28 | var $databaseType = "db2"; |
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| 29 | var $fmtDate = "'Y-m-d'"; |
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| 30 | var $concat_operator = '||'; |
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| 31 | |
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| 32 | var $sysTime = 'CURRENT TIME'; |
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| 33 | var $sysDate = 'CURRENT DATE'; |
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| 34 | var $sysTimeStamp = 'CURRENT TIMESTAMP'; |
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| 35 | |
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| 36 | var $fmtTimeStamp = "'Y-m-d-H:i:s'"; |
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| 37 | var $replaceQuote = "''"; // string to use to replace quotes |
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| 38 | var $dataProvider = "db2"; |
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| 39 | var $hasAffectedRows = true; |
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| 40 | |
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| 41 | var $binmode = DB2_BINARY; |
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| 42 | |
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| 43 | var $useFetchArray = false; // setting this to true will make array elements in FETCH_ASSOC mode case-sensitive |
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| 44 | // breaking backward-compat |
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| 45 | var $_bindInputArray = false; |
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| 46 | var $_genIDSQL = "VALUES NEXTVAL FOR %s"; |
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| 47 | var $_genSeqSQL = "CREATE SEQUENCE %s START WITH 1 NO MAXVALUE NO CYCLE"; |
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| 48 | var $_dropSeqSQL = "DROP SEQUENCE %s"; |
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| 49 | var $_autocommit = true; |
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| 50 | var $_haserrorfunctions = true; |
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| 51 | var $_lastAffectedRows = 0; |
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| 52 | var $uCaseTables = true; // for meta* functions, uppercase table names |
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| 53 | var $hasInsertID = true; |
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| 54 | |
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| 55 | function _insertid() |
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| 56 | { |
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| 57 | return ADOConnection::GetOne('VALUES IDENTITY_VAL_LOCAL()'); |
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| 58 | } |
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| 59 | |
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| 60 | function ADODB_db2() |
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| 61 | { |
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| 62 | $this->_haserrorfunctions = ADODB_PHPVER >= 0x4050; |
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| 63 | } |
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| 64 | |
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| 65 | // returns true or false |
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| 66 | function _connect($argDSN, $argUsername, $argPassword, $argDatabasename) |
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| 67 | { |
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| 68 | global $php_errormsg; |
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| 69 | |
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| 70 | if (!function_exists('db2_connect')) { |
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| 71 | ADOConnection::outp("Warning: The old ODBC based DB2 driver has been renamed 'odbc_db2'. This ADOdb driver calls PHP's native db2 extension."); |
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| 72 | return null; |
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| 73 | } |
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| 74 | // This needs to be set before the connect(). |
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| 75 | // Replaces the odbc_binmode() call that was in Execute() |
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| 76 | ini_set('ibm_db2.binmode', $this->binmode); |
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| 77 | |
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| 78 | if ($argDatabasename) { |
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| 79 | $this->_connectionID = db2_connect($argDatabasename,$argUsername,$argPassword); |
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| 80 | } else { |
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| 81 | $this->_connectionID = db2_connect($argDSN,$argUsername,$argPassword); |
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| 82 | } |
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| 83 | if (isset($php_errormsg)) $php_errormsg = ''; |
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| 84 | |
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| 85 | // For db2_connect(), there is an optional 4th arg. If present, it must be |
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| 86 | // an array of valid options. So far, we don't use them. |
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| 87 | |
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| 88 | $this->_errorMsg = @db2_conn_errormsg(); |
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| 89 | |
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| 90 | if (isset($this->connectStmt)) $this->Execute($this->connectStmt); |
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| 91 | |
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| 92 | return $this->_connectionID != false; |
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| 93 | } |
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| 94 | |
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| 95 | // returns true or false |
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| 96 | function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename) |
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| 97 | { |
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| 98 | global $php_errormsg; |
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| 99 | |
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| 100 | if (!function_exists('db2_connect')) return null; |
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| 101 | |
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| 102 | // This needs to be set before the connect(). |
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| 103 | // Replaces the odbc_binmode() call that was in Execute() |
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| 104 | ini_set('ibm_db2.binmode', $this->binmode); |
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| 105 | |
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| 106 | if (isset($php_errormsg)) $php_errormsg = ''; |
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| 107 | $this->_errorMsg = isset($php_errormsg) ? $php_errormsg : ''; |
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| 108 | |
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| 109 | if ($argDatabasename) { |
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| 110 | $this->_connectionID = db2_pconnect($argDatabasename,$argUsername,$argPassword); |
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| 111 | } else { |
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| 112 | $this->_connectionID = db2_pconnect($argDSN,$argUsername,$argPassword); |
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| 113 | } |
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| 114 | if (isset($php_errormsg)) $php_errormsg = ''; |
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| 115 | |
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| 116 | $this->_errorMsg = @db2_conn_errormsg(); |
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| 117 | if ($this->_connectionID && $this->autoRollback) @db2_rollback($this->_connectionID); |
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| 118 | if (isset($this->connectStmt)) $this->Execute($this->connectStmt); |
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| 119 | |
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| 120 | return $this->_connectionID != false; |
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| 121 | } |
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| 122 | |
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| 123 | // format and return date string in database timestamp format |
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| 124 | function DBTimeStamp($ts) |
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| 125 | { |
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| 126 | if (empty($ts) && $ts !== 0) return 'null'; |
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| 127 | if (is_string($ts)) $ts = ADORecordSet::UnixTimeStamp($ts); |
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| 128 | return 'TO_DATE('.adodb_date($this->fmtTimeStamp,$ts).",'YYYY-MM-DD HH24:MI:SS')"; |
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| 129 | } |
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| 130 | |
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| 131 | // Format date column in sql string given an input format that understands Y M D |
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| 132 | function SQLDate($fmt, $col=false) |
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| 133 | { |
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| 134 | // use right() and replace() ? |
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| 135 | if (!$col) $col = $this->sysDate; |
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| 136 | |
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| 137 | /* use TO_CHAR() if $fmt is TO_CHAR() allowed fmt */ |
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| 138 | if ($fmt== 'Y-m-d H:i:s') |
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| 139 | return 'TO_CHAR('.$col.", 'YYYY-MM-DD HH24:MI:SS')"; |
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| 140 | |
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| 141 | $s = ''; |
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| 142 | |
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| 143 | $len = strlen($fmt); |
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| 144 | for ($i=0; $i < $len; $i++) { |
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| 145 | if ($s) $s .= $this->concat_operator; |
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| 146 | $ch = $fmt[$i]; |
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| 147 | switch($ch) { |
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| 148 | case 'Y': |
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| 149 | case 'y': |
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| 150 | if ($len==1) return "year($col)"; |
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| 151 | $s .= "char(year($col))"; |
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| 152 | break; |
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| 153 | case 'M': |
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| 154 | if ($len==1) return "monthname($col)"; |
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| 155 | $s .= "substr(monthname($col),1,3)"; |
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| 156 | break; |
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| 157 | case 'm': |
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| 158 | if ($len==1) return "month($col)"; |
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| 159 | $s .= "right(digits(month($col)),2)"; |
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| 160 | break; |
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| 161 | case 'D': |
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| 162 | case 'd': |
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| 163 | if ($len==1) return "day($col)"; |
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| 164 | $s .= "right(digits(day($col)),2)"; |
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| 165 | break; |
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| 166 | case 'H': |
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| 167 | case 'h': |
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| 168 | if ($len==1) return "hour($col)"; |
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| 169 | if ($col != $this->sysDate) $s .= "right(digits(hour($col)),2)"; |
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| 170 | else $s .= "''"; |
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| 171 | break; |
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| 172 | case 'i': |
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| 173 | case 'I': |
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| 174 | if ($len==1) return "minute($col)"; |
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| 175 | if ($col != $this->sysDate) |
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| 176 | $s .= "right(digits(minute($col)),2)"; |
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| 177 | else $s .= "''"; |
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| 178 | break; |
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| 179 | case 'S': |
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| 180 | case 's': |
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| 181 | if ($len==1) return "second($col)"; |
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| 182 | if ($col != $this->sysDate) |
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| 183 | $s .= "right(digits(second($col)),2)"; |
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| 184 | else $s .= "''"; |
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| 185 | break; |
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| 186 | default: |
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| 187 | if ($ch == '\\') { |
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| 188 | $i++; |
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| 189 | $ch = substr($fmt,$i,1); |
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| 190 | } |
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| 191 | $s .= $this->qstr($ch); |
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| 192 | } |
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| 193 | } |
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| 194 | return $s; |
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| 195 | } |
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| 196 | |
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| 197 | |
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| 198 | function ServerInfo() |
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| 199 | { |
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| 200 | |
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| 201 | if (!empty($this->host) && ADODB_PHPVER >= 0x4300) { |
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| 202 | $dsn = strtoupper($this->host); |
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| 203 | $first = true; |
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| 204 | $found = false; |
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| 205 | |
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| 206 | if (!function_exists('db2_data_source')) return false; |
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| 207 | |
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| 208 | while(true) { |
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| 209 | |
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| 210 | $rez = @db2_data_source($this->_connectionID, |
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| 211 | $first ? SQL_FETCH_FIRST : SQL_FETCH_NEXT); |
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| 212 | $first = false; |
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| 213 | if (!is_array($rez)) break; |
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| 214 | if (strtoupper($rez['server']) == $dsn) { |
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| 215 | $found = true; |
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| 216 | break; |
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| 217 | } |
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| 218 | } |
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| 219 | if (!$found) return ADOConnection::ServerInfo(); |
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| 220 | if (!isset($rez['version'])) $rez['version'] = ''; |
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| 221 | return $rez; |
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| 222 | } else { |
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| 223 | return ADOConnection::ServerInfo(); |
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| 224 | } |
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| 225 | } |
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| 226 | |
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| 227 | |
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| 228 | function CreateSequence($seqname='adodbseq',$start=1) |
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| 229 | { |
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| 230 | if (empty($this->_genSeqSQL)) return false; |
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| 231 | $ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname)); |
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| 232 | if (!$ok) return false; |
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| 233 | return true; |
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| 234 | } |
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| 235 | |
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| 236 | function DropSequence($seqname) |
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| 237 | { |
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| 238 | if (empty($this->_dropSeqSQL)) return false; |
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| 239 | return $this->Execute(sprintf($this->_dropSeqSQL,$seqname)); |
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| 240 | } |
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| 241 | |
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| 242 | /* |
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| 243 | This algorithm is not very efficient, but works even if table locking |
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| 244 | is not available. |
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| 245 | |
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| 246 | Will return false if unable to generate an ID after $MAXLOOPS attempts. |
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| 247 | */ |
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| 248 | function GenID($seq='adodbseq',$start=1) |
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| 249 | { |
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| 250 | // if you have to modify the parameter below, your database is overloaded, |
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| 251 | // or you need to implement generation of id's yourself! |
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| 252 | $num = $this->GetOne("VALUES NEXTVAL FOR $seq"); |
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| 253 | return $num; |
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| 254 | } |
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| 255 | |
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| 256 | |
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| 257 | function ErrorMsg() |
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| 258 | { |
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| 259 | if ($this->_haserrorfunctions) { |
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| 260 | if ($this->_errorMsg !== false) return $this->_errorMsg; |
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| 261 | if (empty($this->_connectionID)) return @db2_conn_errormsg(); |
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| 262 | return @db2_conn_errormsg($this->_connectionID); |
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| 263 | } else return ADOConnection::ErrorMsg(); |
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| 264 | } |
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| 265 | |
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| 266 | function ErrorNo() |
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| 267 | { |
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| 268 | |
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| 269 | if ($this->_haserrorfunctions) { |
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| 270 | if ($this->_errorCode !== false) { |
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| 271 | // bug in 4.0.6, error number can be corrupted string (should be 6 digits) |
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| 272 | return (strlen($this->_errorCode)<=2) ? 0 : $this->_errorCode; |
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| 273 | } |
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| 274 | |
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| 275 | if (empty($this->_connectionID)) $e = @db2_conn_error(); |
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| 276 | else $e = @db2_conn_error($this->_connectionID); |
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| 277 | |
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| 278 | // bug in 4.0.6, error number can be corrupted string (should be 6 digits) |
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| 279 | // so we check and patch |
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| 280 | if (strlen($e)<=2) return 0; |
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| 281 | return $e; |
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| 282 | } else return ADOConnection::ErrorNo(); |
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| 283 | } |
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| 284 | |
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| 285 | |
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| 286 | |
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| 287 | function BeginTrans() |
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| 288 | { |
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| 289 | if (!$this->hasTransactions) return false; |
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| 290 | if ($this->transOff) return true; |
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| 291 | $this->transCnt += 1; |
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| 292 | $this->_autocommit = false; |
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| 293 | return db2_autocommit($this->_connectionID,false); |
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| 294 | } |
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| 295 | |
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| 296 | function CommitTrans($ok=true) |
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| 297 | { |
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| 298 | if ($this->transOff) return true; |
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| 299 | if (!$ok) return $this->RollbackTrans(); |
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| 300 | if ($this->transCnt) $this->transCnt -= 1; |
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| 301 | $this->_autocommit = true; |
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| 302 | $ret = db2_commit($this->_connectionID); |
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| 303 | db2_autocommit($this->_connectionID,true); |
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| 304 | return $ret; |
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| 305 | } |
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| 306 | |
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| 307 | function RollbackTrans() |
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| 308 | { |
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| 309 | if ($this->transOff) return true; |
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| 310 | if ($this->transCnt) $this->transCnt -= 1; |
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| 311 | $this->_autocommit = true; |
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| 312 | $ret = db2_rollback($this->_connectionID); |
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| 313 | db2_autocommit($this->_connectionID,true); |
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| 314 | return $ret; |
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| 315 | } |
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| 316 | |
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| 317 | function MetaPrimaryKeys($table) |
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| 318 | { |
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| 319 | global $ADODB_FETCH_MODE; |
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| 320 | |
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| 321 | if ($this->uCaseTables) $table = strtoupper($table); |
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| 322 | $schema = ''; |
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| 323 | $this->_findschema($table,$schema); |
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| 324 | |
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| 325 | $savem = $ADODB_FETCH_MODE; |
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| 326 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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| 327 | $qid = @db2_primarykeys($this->_connectionID,'',$schema,$table); |
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| 328 | |
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| 329 | if (!$qid) { |
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| 330 | $ADODB_FETCH_MODE = $savem; |
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| 331 | return false; |
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| 332 | } |
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| 333 | $rs = new ADORecordSet_db2($qid); |
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| 334 | $ADODB_FETCH_MODE = $savem; |
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| 335 | |
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| 336 | if (!$rs) return false; |
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| 337 | |
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| 338 | $arr =& $rs->GetArray(); |
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| 339 | $rs->Close(); |
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| 340 | $arr2 = array(); |
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| 341 | for ($i=0; $i < sizeof($arr); $i++) { |
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| 342 | if ($arr[$i][3]) $arr2[] = $arr[$i][3]; |
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| 343 | } |
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| 344 | return $arr2; |
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| 345 | } |
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| 346 | |
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| 347 | function MetaForeignKeys($table, $owner = FALSE, $upper = FALSE, $asociative = FALSE ) |
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| 348 | { |
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| 349 | global $ADODB_FETCH_MODE; |
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| 350 | |
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| 351 | if ($this->uCaseTables) $table = strtoupper($table); |
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| 352 | $schema = ''; |
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| 353 | $this->_findschema($table,$schema); |
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| 354 | |
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| 355 | $savem = $ADODB_FETCH_MODE; |
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| 356 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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| 357 | $qid = @db2_foreign_keys($this->_connectionID,'',$schema,$table); |
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| 358 | if (!$qid) { |
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| 359 | $ADODB_FETCH_MODE = $savem; |
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| 360 | return false; |
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| 361 | } |
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| 362 | $rs = new ADORecordSet_db2($qid); |
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| 363 | |
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| 364 | $ADODB_FETCH_MODE = $savem; |
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| 365 | /* |
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| 366 | $rs->fields indices |
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| 367 | 0 PKTABLE_CAT |
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| 368 | 1 PKTABLE_SCHEM |
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| 369 | 2 PKTABLE_NAME |
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| 370 | 3 PKCOLUMN_NAME |
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| 371 | 4 FKTABLE_CAT |
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| 372 | 5 FKTABLE_SCHEM |
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| 373 | 6 FKTABLE_NAME |
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| 374 | 7 FKCOLUMN_NAME |
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| 375 | */ |
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| 376 | if (!$rs) return false; |
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| 377 | |
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| 378 | $foreign_keys = array(); |
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| 379 | while (!$rs->EOF) { |
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| 380 | if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) { |
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| 381 | if (!is_array($foreign_keys[$rs->fields[5].'.'.$rs->fields[6]])) |
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| 382 | $foreign_keys[$rs->fields[5].'.'.$rs->fields[6]] = array(); |
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| 383 | $foreign_keys[$rs->fields[5].'.'.$rs->fields[6]][$rs->fields[7]] = $rs->fields[3]; |
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| 384 | } |
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| 385 | $rs->MoveNext(); |
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| 386 | } |
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| 387 | |
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| 388 | $rs->Close(); |
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| 389 | return $foreign_key; |
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| 390 | } |
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| 391 | |
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| 392 | |
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| 393 | function &MetaTables($ttype=false,$schema=false) |
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| 394 | { |
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| 395 | global $ADODB_FETCH_MODE; |
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| 396 | |
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| 397 | $savem = $ADODB_FETCH_MODE; |
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| 398 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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| 399 | $qid = db2_tables($this->_connectionID); |
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| 400 | |
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| 401 | $rs = new ADORecordSet_db2($qid); |
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| 402 | |
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| 403 | $ADODB_FETCH_MODE = $savem; |
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| 404 | if (!$rs) { |
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| 405 | $false = false; |
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| 406 | return $false; |
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| 407 | } |
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| 408 | |
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| 409 | $arr =& $rs->GetArray(); |
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| 410 | |
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| 411 | $rs->Close(); |
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| 412 | $arr2 = array(); |
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| 413 | |
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| 414 | if ($ttype) { |
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| 415 | $isview = strncmp($ttype,'V',1) === 0; |
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| 416 | } |
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| 417 | for ($i=0; $i < sizeof($arr); $i++) { |
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| 418 | if (!$arr[$i][2]) continue; |
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| 419 | $type = $arr[$i][3]; |
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| 420 | $schemaval = ($schema) ? $arr[$i][1].'.' : ''; |
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| 421 | if ($ttype) { |
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| 422 | if ($isview) { |
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| 423 | if (strncmp($type,'V',1) === 0) $arr2[] = $schemaval.$arr[$i][2]; |
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| 424 | } else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2]; |
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| 425 | } else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2]; |
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| 426 | } |
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| 427 | return $arr2; |
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| 428 | } |
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| 429 | |
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| 430 | /* |
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| 431 | See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/db2/htm/db2datetime_data_type_changes.asp |
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| 432 | / SQL data type codes / |
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| 433 | #define SQL_UNKNOWN_TYPE 0 |
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| 434 | #define SQL_CHAR 1 |
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| 435 | #define SQL_NUMERIC 2 |
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| 436 | #define SQL_DECIMAL 3 |
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| 437 | #define SQL_INTEGER 4 |
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| 438 | #define SQL_SMALLINT 5 |
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| 439 | #define SQL_FLOAT 6 |
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| 440 | #define SQL_REAL 7 |
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| 441 | #define SQL_DOUBLE 8 |
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| 442 | #if (DB2VER >= 0x0300) |
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| 443 | #define SQL_DATETIME 9 |
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| 444 | #endif |
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| 445 | #define SQL_VARCHAR 12 |
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| 446 | |
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| 447 | |
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| 448 | / One-parameter shortcuts for date/time data types / |
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| 449 | #if (DB2VER >= 0x0300) |
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| 450 | #define SQL_TYPE_DATE 91 |
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| 451 | #define SQL_TYPE_TIME 92 |
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| 452 | #define SQL_TYPE_TIMESTAMP 93 |
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| 453 | |
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| 454 | #define SQL_UNICODE (-95) |
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| 455 | #define SQL_UNICODE_VARCHAR (-96) |
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| 456 | #define SQL_UNICODE_LONGVARCHAR (-97) |
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| 457 | */ |
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| 458 | function DB2Types($t) |
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| 459 | { |
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| 460 | switch ((integer)$t) { |
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| 461 | case 1: |
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| 462 | case 12: |
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| 463 | case 0: |
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| 464 | case -95: |
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| 465 | case -96: |
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| 466 | return 'C'; |
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| 467 | case -97: |
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| 468 | case -1: //text |
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| 469 | return 'X'; |
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| 470 | case -4: //image |
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| 471 | return 'B'; |
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| 472 | |
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| 473 | case 9: |
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| 474 | case 91: |
---|
| 475 | return 'D'; |
---|
| 476 | |
---|
| 477 | case 10: |
---|
| 478 | case 11: |
---|
| 479 | case 92: |
---|
| 480 | case 93: |
---|
| 481 | return 'T'; |
---|
| 482 | |
---|
| 483 | case 4: |
---|
| 484 | case 5: |
---|
| 485 | case -6: |
---|
| 486 | return 'I'; |
---|
| 487 | |
---|
| 488 | case -11: // uniqidentifier |
---|
| 489 | return 'R'; |
---|
| 490 | case -7: //bit |
---|
| 491 | return 'L'; |
---|
| 492 | |
---|
| 493 | default: |
---|
| 494 | return 'N'; |
---|
| 495 | } |
---|
| 496 | } |
---|
| 497 | |
---|
| 498 | function &MetaColumns($table) |
---|
| 499 | { |
---|
| 500 | global $ADODB_FETCH_MODE; |
---|
| 501 | |
---|
| 502 | $false = false; |
---|
| 503 | if ($this->uCaseTables) $table = strtoupper($table); |
---|
| 504 | $schema = ''; |
---|
| 505 | $this->_findschema($table,$schema); |
---|
| 506 | |
---|
| 507 | $savem = $ADODB_FETCH_MODE; |
---|
| 508 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
---|
| 509 | |
---|
| 510 | $colname = "%"; |
---|
| 511 | $qid = db2_columns($this->_connectionID, "", $schema, $table, $colname); |
---|
| 512 | if (empty($qid)) return $false; |
---|
| 513 | |
---|
| 514 | $rs =& new ADORecordSet_db2($qid); |
---|
| 515 | $ADODB_FETCH_MODE = $savem; |
---|
| 516 | |
---|
| 517 | if (!$rs) return $false; |
---|
| 518 | $rs->_fetch(); |
---|
| 519 | |
---|
| 520 | $retarr = array(); |
---|
| 521 | |
---|
| 522 | /* |
---|
| 523 | $rs->fields indices |
---|
| 524 | 0 TABLE_QUALIFIER |
---|
| 525 | 1 TABLE_SCHEM |
---|
| 526 | 2 TABLE_NAME |
---|
| 527 | 3 COLUMN_NAME |
---|
| 528 | 4 DATA_TYPE |
---|
| 529 | 5 TYPE_NAME |
---|
| 530 | 6 PRECISION |
---|
| 531 | 7 LENGTH |
---|
| 532 | 8 SCALE |
---|
| 533 | 9 RADIX |
---|
| 534 | 10 NULLABLE |
---|
| 535 | 11 REMARKS |
---|
| 536 | */ |
---|
| 537 | while (!$rs->EOF) { |
---|
| 538 | if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) { |
---|
| 539 | $fld = new ADOFieldObject(); |
---|
| 540 | $fld->name = $rs->fields[3]; |
---|
| 541 | $fld->type = $this->DB2Types($rs->fields[4]); |
---|
| 542 | |
---|
| 543 | // ref: http://msdn.microsoft.com/library/default.asp?url=/archive/en-us/dnaraccgen/html/msdn_odk.asp |
---|
| 544 | // access uses precision to store length for char/varchar |
---|
| 545 | if ($fld->type == 'C' or $fld->type == 'X') { |
---|
| 546 | if ($rs->fields[4] <= -95) // UNICODE |
---|
| 547 | $fld->max_length = $rs->fields[7]/2; |
---|
| 548 | else |
---|
| 549 | $fld->max_length = $rs->fields[7]; |
---|
| 550 | } else |
---|
| 551 | $fld->max_length = $rs->fields[7]; |
---|
| 552 | $fld->not_null = !empty($rs->fields[10]); |
---|
| 553 | $fld->scale = $rs->fields[8]; |
---|
| 554 | $fld->primary_key = false; |
---|
| 555 | $retarr[strtoupper($fld->name)] = $fld; |
---|
| 556 | } else if (sizeof($retarr)>0) |
---|
| 557 | break; |
---|
| 558 | $rs->MoveNext(); |
---|
| 559 | } |
---|
| 560 | $rs->Close(); |
---|
| 561 | if (empty($retarr)) $retarr = false; |
---|
| 562 | |
---|
| 563 | $qid = db2_primary_keys($this->_connectionID, "", $schema, $table); |
---|
| 564 | if (empty($qid)) return $false; |
---|
| 565 | |
---|
| 566 | $rs =& new ADORecordSet_db2($qid); |
---|
| 567 | $ADODB_FETCH_MODE = $savem; |
---|
| 568 | |
---|
| 569 | if (!$rs) return $retarr; |
---|
| 570 | $rs->_fetch(); |
---|
| 571 | |
---|
| 572 | /* |
---|
| 573 | $rs->fields indices |
---|
| 574 | 0 TABLE_CAT |
---|
| 575 | 1 TABLE_SCHEM |
---|
| 576 | 2 TABLE_NAME |
---|
| 577 | 3 COLUMN_NAME |
---|
| 578 | 4 KEY_SEQ |
---|
| 579 | 5 PK_NAME |
---|
| 580 | */ |
---|
| 581 | while (!$rs->EOF) { |
---|
| 582 | if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) { |
---|
| 583 | $retarr[strtoupper($rs->fields[3])]->primary_key = true; |
---|
| 584 | } else if (sizeof($retarr)>0) |
---|
| 585 | break; |
---|
| 586 | $rs->MoveNext(); |
---|
| 587 | } |
---|
| 588 | $rs->Close(); |
---|
| 589 | |
---|
| 590 | if (empty($retarr)) $retarr = false; |
---|
| 591 | return $retarr; |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | function Prepare($sql) |
---|
| 595 | { |
---|
| 596 | if (! $this->_bindInputArray) return $sql; // no binding |
---|
| 597 | $stmt = db2_prepare($this->_connectionID,$sql); |
---|
| 598 | if (!$stmt) { |
---|
| 599 | // we don't know whether db2 driver is parsing prepared stmts, so just return sql |
---|
| 600 | return $sql; |
---|
| 601 | } |
---|
| 602 | return array($sql,$stmt,false); |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | /* returns queryID or false */ |
---|
| 606 | function _query($sql,$inputarr=false) |
---|
| 607 | { |
---|
| 608 | GLOBAL $php_errormsg; |
---|
| 609 | if (isset($php_errormsg)) $php_errormsg = ''; |
---|
| 610 | $this->_error = ''; |
---|
| 611 | |
---|
| 612 | if ($inputarr) { |
---|
| 613 | if (is_array($sql)) { |
---|
| 614 | $stmtid = $sql[1]; |
---|
| 615 | } else { |
---|
| 616 | $stmtid = db2_prepare($this->_connectionID,$sql); |
---|
| 617 | |
---|
| 618 | if ($stmtid == false) { |
---|
| 619 | $this->_errorMsg = isset($php_errormsg) ? $php_errormsg : ''; |
---|
| 620 | return false; |
---|
| 621 | } |
---|
| 622 | } |
---|
| 623 | |
---|
| 624 | if (! db2_execute($stmtid,$inputarr)) { |
---|
| 625 | if ($this->_haserrorfunctions) { |
---|
| 626 | $this->_errorMsg = db2_stmt_errormsg(); |
---|
| 627 | $this->_errorCode = db2_stmt_error(); |
---|
| 628 | } |
---|
| 629 | return false; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | } else if (is_array($sql)) { |
---|
| 633 | $stmtid = $sql[1]; |
---|
| 634 | if (!db2_execute($stmtid)) { |
---|
| 635 | if ($this->_haserrorfunctions) { |
---|
| 636 | $this->_errorMsg = db2_stmt_errormsg(); |
---|
| 637 | $this->_errorCode = db2_stmt_error(); |
---|
| 638 | } |
---|
| 639 | return false; |
---|
| 640 | } |
---|
| 641 | } else |
---|
| 642 | $stmtid = @db2_exec($this->_connectionID,$sql); |
---|
| 643 | |
---|
| 644 | $this->_lastAffectedRows = 0; |
---|
| 645 | if ($stmtid) { |
---|
| 646 | if (@db2_num_fields($stmtid) == 0) { |
---|
| 647 | $this->_lastAffectedRows = db2_num_rows($stmtid); |
---|
| 648 | $stmtid = true; |
---|
| 649 | } else { |
---|
| 650 | $this->_lastAffectedRows = 0; |
---|
| 651 | } |
---|
| 652 | |
---|
| 653 | if ($this->_haserrorfunctions) { |
---|
| 654 | $this->_errorMsg = ''; |
---|
| 655 | $this->_errorCode = 0; |
---|
| 656 | } else |
---|
| 657 | $this->_errorMsg = isset($php_errormsg) ? $php_errormsg : ''; |
---|
| 658 | } else { |
---|
| 659 | if ($this->_haserrorfunctions) { |
---|
| 660 | $this->_errorMsg = db2_stmt_errormsg(); |
---|
| 661 | $this->_errorCode = db2_stmt_error(); |
---|
| 662 | } else |
---|
| 663 | $this->_errorMsg = isset($php_errormsg) ? $php_errormsg : ''; |
---|
| 664 | |
---|
| 665 | } |
---|
| 666 | return $stmtid; |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | /* |
---|
| 670 | Insert a null into the blob field of the table first. |
---|
| 671 | Then use UpdateBlob to store the blob. |
---|
| 672 | |
---|
| 673 | Usage: |
---|
| 674 | |
---|
| 675 | $conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)'); |
---|
| 676 | $conn->UpdateBlob('blobtable','blobcol',$blob,'id=1'); |
---|
| 677 | */ |
---|
| 678 | function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB') |
---|
| 679 | { |
---|
| 680 | return $this->Execute("UPDATE $table SET $column=? WHERE $where",array($val)) != false; |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | // returns true or false |
---|
| 684 | function _close() |
---|
| 685 | { |
---|
| 686 | $ret = @db2_close($this->_connectionID); |
---|
| 687 | $this->_connectionID = false; |
---|
| 688 | return $ret; |
---|
| 689 | } |
---|
| 690 | |
---|
| 691 | function _affectedrows() |
---|
| 692 | { |
---|
| 693 | return $this->_lastAffectedRows; |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | } |
---|
| 697 | |
---|
| 698 | /*-------------------------------------------------------------------------------------- |
---|
| 699 | Class Name: Recordset |
---|
| 700 | --------------------------------------------------------------------------------------*/ |
---|
| 701 | |
---|
| 702 | class ADORecordSet_db2 extends ADORecordSet { |
---|
| 703 | |
---|
| 704 | var $bind = false; |
---|
| 705 | var $databaseType = "db2"; |
---|
| 706 | var $dataProvider = "db2"; |
---|
| 707 | var $useFetchArray; |
---|
| 708 | |
---|
| 709 | function ADORecordSet_db2($id,$mode=false) |
---|
| 710 | { |
---|
| 711 | if ($mode === false) { |
---|
| 712 | global $ADODB_FETCH_MODE; |
---|
| 713 | $mode = $ADODB_FETCH_MODE; |
---|
| 714 | } |
---|
| 715 | $this->fetchMode = $mode; |
---|
| 716 | |
---|
| 717 | $this->_queryID = $id; |
---|
| 718 | } |
---|
| 719 | |
---|
| 720 | |
---|
| 721 | // returns the field object |
---|
| 722 | function &FetchField($offset = -1) |
---|
| 723 | { |
---|
| 724 | $o= new ADOFieldObject(); |
---|
| 725 | $o->name = @db2_field_name($this->_queryID,$offset); |
---|
| 726 | $o->type = @db2_field_type($this->_queryID,$offset); |
---|
| 727 | $o->max_length = db2_field_width($this->_queryID,$offset); |
---|
| 728 | if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name); |
---|
| 729 | else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name); |
---|
| 730 | return $o; |
---|
| 731 | } |
---|
| 732 | |
---|
| 733 | /* Use associative array to get fields array */ |
---|
| 734 | function Fields($colname) |
---|
| 735 | { |
---|
| 736 | if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname]; |
---|
| 737 | if (!$this->bind) { |
---|
| 738 | $this->bind = array(); |
---|
| 739 | for ($i=0; $i < $this->_numOfFields; $i++) { |
---|
| 740 | $o = $this->FetchField($i); |
---|
| 741 | $this->bind[strtoupper($o->name)] = $i; |
---|
| 742 | } |
---|
| 743 | } |
---|
| 744 | |
---|
| 745 | return $this->fields[$this->bind[strtoupper($colname)]]; |
---|
| 746 | } |
---|
| 747 | |
---|
| 748 | |
---|
| 749 | function _initrs() |
---|
| 750 | { |
---|
| 751 | global $ADODB_COUNTRECS; |
---|
| 752 | $this->_numOfRows = ($ADODB_COUNTRECS) ? @db2_num_rows($this->_queryID) : -1; |
---|
| 753 | $this->_numOfFields = @db2_num_fields($this->_queryID); |
---|
| 754 | // some silly drivers such as db2 as/400 and intersystems cache return _numOfRows = 0 |
---|
| 755 | if ($this->_numOfRows == 0) $this->_numOfRows = -1; |
---|
| 756 | } |
---|
| 757 | |
---|
| 758 | function _seek($row) |
---|
| 759 | { |
---|
| 760 | return false; |
---|
| 761 | } |
---|
| 762 | |
---|
| 763 | // speed up SelectLimit() by switching to ADODB_FETCH_NUM as ADODB_FETCH_ASSOC is emulated |
---|
| 764 | function &GetArrayLimit($nrows,$offset=-1) |
---|
| 765 | { |
---|
| 766 | if ($offset <= 0) { |
---|
| 767 | $rs =& $this->GetArray($nrows); |
---|
| 768 | return $rs; |
---|
| 769 | } |
---|
| 770 | $savem = $this->fetchMode; |
---|
| 771 | $this->fetchMode = ADODB_FETCH_NUM; |
---|
| 772 | $this->Move($offset); |
---|
| 773 | $this->fetchMode = $savem; |
---|
| 774 | |
---|
| 775 | if ($this->fetchMode & ADODB_FETCH_ASSOC) { |
---|
| 776 | $this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE); |
---|
| 777 | } |
---|
| 778 | |
---|
| 779 | $results = array(); |
---|
| 780 | $cnt = 0; |
---|
| 781 | while (!$this->EOF && $nrows != $cnt) { |
---|
| 782 | $results[$cnt++] = $this->fields; |
---|
| 783 | $this->MoveNext(); |
---|
| 784 | } |
---|
| 785 | |
---|
| 786 | return $results; |
---|
| 787 | } |
---|
| 788 | |
---|
| 789 | |
---|
| 790 | function MoveNext() |
---|
| 791 | { |
---|
| 792 | if ($this->_numOfRows != 0 && !$this->EOF) { |
---|
| 793 | $this->_currentRow++; |
---|
| 794 | |
---|
| 795 | $this->fields = @db2_fetch_array($this->_queryID); |
---|
| 796 | if ($this->fields) { |
---|
| 797 | if ($this->fetchMode & ADODB_FETCH_ASSOC) { |
---|
| 798 | $this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE); |
---|
| 799 | } |
---|
| 800 | return true; |
---|
| 801 | } |
---|
| 802 | } |
---|
| 803 | $this->fields = false; |
---|
| 804 | $this->EOF = true; |
---|
| 805 | return false; |
---|
| 806 | } |
---|
| 807 | |
---|
| 808 | function _fetch() |
---|
| 809 | { |
---|
| 810 | |
---|
| 811 | $this->fields = db2_fetch_array($this->_queryID); |
---|
| 812 | if ($this->fields) { |
---|
| 813 | if ($this->fetchMode & ADODB_FETCH_ASSOC) { |
---|
| 814 | $this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE); |
---|
| 815 | } |
---|
| 816 | return true; |
---|
| 817 | } |
---|
| 818 | $this->fields = false; |
---|
| 819 | return false; |
---|
| 820 | } |
---|
| 821 | |
---|
| 822 | function _close() |
---|
| 823 | { |
---|
| 824 | return @db2_free_result($this->_queryID); |
---|
| 825 | } |
---|
| 826 | |
---|
| 827 | } |
---|
| 828 | ?> |
---|