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849 lines
22 KiB
849 lines
22 KiB
<?php
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/**
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@version v5.20.9 21-Dec-2016
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@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
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@copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community
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This is a version of the ADODB driver for DB2. It uses the 'ibm_db2' PECL extension
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for PHP (http://pecl.php.net/package/ibm_db2), which in turn requires DB2 V8.2.2 or
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higher.
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Originally tested with PHP 5.1.1 and Apache 2.0.55 on Windows XP SP2.
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More recently tested with PHP 5.1.2 and Apache 2.0.55 on Windows XP SP2.
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This file was ported from "adodb-odbc.inc.php" by Larry Menard, "larry.menard#rogers.com".
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I ripped out what I believed to be a lot of redundant or obsolete code, but there are
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probably still some remnants of the ODBC support in this file; I'm relying on reviewers
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of this code to point out any other things that can be removed.
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*/
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// security - hide paths
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if (!defined('ADODB_DIR')) die();
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define("_ADODB_DB2_LAYER", 2 );
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/*--------------------------------------------------------------------------------------
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--------------------------------------------------------------------------------------*/
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class ADODB_db2 extends ADOConnection {
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var $databaseType = "db2";
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var $fmtDate = "'Y-m-d'";
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var $concat_operator = '||';
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var $sysTime = 'CURRENT TIME';
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var $sysDate = 'CURRENT DATE';
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var $sysTimeStamp = 'CURRENT TIMESTAMP';
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var $fmtTimeStamp = "'Y-m-d H:i:s'";
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var $replaceQuote = "''"; // string to use to replace quotes
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var $dataProvider = "db2";
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var $hasAffectedRows = true;
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var $binmode = DB2_BINARY;
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var $useFetchArray = false; // setting this to true will make array elements in FETCH_ASSOC mode case-sensitive
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// breaking backward-compat
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var $_bindInputArray = false;
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var $_genIDSQL = "VALUES NEXTVAL FOR %s";
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var $_genSeqSQL = "CREATE SEQUENCE %s START WITH %s NO MAXVALUE NO CYCLE";
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var $_dropSeqSQL = "DROP SEQUENCE %s";
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var $_autocommit = true;
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var $_haserrorfunctions = true;
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var $_lastAffectedRows = 0;
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var $uCaseTables = true; // for meta* functions, uppercase table names
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var $hasInsertID = true;
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function _insertid()
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{
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return ADOConnection::GetOne('VALUES IDENTITY_VAL_LOCAL()');
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}
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function __construct()
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{
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$this->_haserrorfunctions = ADODB_PHPVER >= 0x4050;
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}
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// returns true or false
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function _connect($argDSN, $argUsername, $argPassword, $argDatabasename)
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{
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global $php_errormsg;
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if (!function_exists('db2_connect')) {
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ADOConnection::outp("Warning: The old ODBC based DB2 driver has been renamed 'odbc_db2'. This ADOdb driver calls PHP's native db2 extension which is not installed.");
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return null;
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}
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// This needs to be set before the connect().
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// Replaces the odbc_binmode() call that was in Execute()
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ini_set('ibm_db2.binmode', $this->binmode);
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if ($argDatabasename && empty($argDSN)) {
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if (stripos($argDatabasename,'UID=') && stripos($argDatabasename,'PWD=')) $this->_connectionID = db2_connect($argDatabasename,null,null);
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else $this->_connectionID = db2_connect($argDatabasename,$argUsername,$argPassword);
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} else {
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if ($argDatabasename) $schema = $argDatabasename;
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if (stripos($argDSN,'UID=') && stripos($argDSN,'PWD=')) $this->_connectionID = db2_connect($argDSN,null,null);
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else $this->_connectionID = db2_connect($argDSN,$argUsername,$argPassword);
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}
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if (isset($php_errormsg)) $php_errormsg = '';
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// For db2_connect(), there is an optional 4th arg. If present, it must be
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// an array of valid options. So far, we don't use them.
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$this->_errorMsg = @db2_conn_errormsg();
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if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
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if ($this->_connectionID && isset($schema)) $this->Execute("SET SCHEMA=$schema");
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return $this->_connectionID != false;
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}
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// returns true or false
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function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename)
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{
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global $php_errormsg;
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if (!function_exists('db2_connect')) return null;
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// This needs to be set before the connect().
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// Replaces the odbc_binmode() call that was in Execute()
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ini_set('ibm_db2.binmode', $this->binmode);
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if (isset($php_errormsg)) $php_errormsg = '';
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$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
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if ($argDatabasename && empty($argDSN)) {
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if (stripos($argDatabasename,'UID=') && stripos($argDatabasename,'PWD=')) $this->_connectionID = db2_pconnect($argDatabasename,null,null);
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else $this->_connectionID = db2_pconnect($argDatabasename,$argUsername,$argPassword);
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} else {
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if ($argDatabasename) $schema = $argDatabasename;
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if (stripos($argDSN,'UID=') && stripos($argDSN,'PWD=')) $this->_connectionID = db2_pconnect($argDSN,null,null);
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else $this->_connectionID = db2_pconnect($argDSN,$argUsername,$argPassword);
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}
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if (isset($php_errormsg)) $php_errormsg = '';
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$this->_errorMsg = @db2_conn_errormsg();
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if ($this->_connectionID && $this->autoRollback) @db2_rollback($this->_connectionID);
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if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
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if ($this->_connectionID && isset($schema)) $this->Execute("SET SCHEMA=$schema");
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return $this->_connectionID != false;
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}
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// format and return date string in database timestamp format
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function DBTimeStamp($ts, $isfld = false)
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{
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if (empty($ts) && $ts !== 0) return 'null';
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if (is_string($ts)) $ts = ADORecordSet::UnixTimeStamp($ts);
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return 'TO_DATE('.adodb_date($this->fmtTimeStamp,$ts).",'YYYY-MM-DD HH24:MI:SS')";
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}
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// Format date column in sql string given an input format that understands Y M D
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function SQLDate($fmt, $col=false)
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{
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// use right() and replace() ?
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if (!$col) $col = $this->sysDate;
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/* use TO_CHAR() if $fmt is TO_CHAR() allowed fmt */
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if ($fmt== 'Y-m-d H:i:s')
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return 'TO_CHAR('.$col.", 'YYYY-MM-DD HH24:MI:SS')";
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$s = '';
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$len = strlen($fmt);
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for ($i=0; $i < $len; $i++) {
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if ($s) $s .= $this->concat_operator;
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$ch = $fmt[$i];
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switch($ch) {
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case 'Y':
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case 'y':
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if ($len==1) return "year($col)";
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$s .= "char(year($col))";
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break;
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case 'M':
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if ($len==1) return "monthname($col)";
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$s .= "substr(monthname($col),1,3)";
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break;
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case 'm':
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if ($len==1) return "month($col)";
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$s .= "right(digits(month($col)),2)";
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break;
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case 'D':
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case 'd':
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if ($len==1) return "day($col)";
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$s .= "right(digits(day($col)),2)";
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break;
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case 'H':
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case 'h':
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if ($len==1) return "hour($col)";
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if ($col != $this->sysDate) $s .= "right(digits(hour($col)),2)";
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else $s .= "''";
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break;
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case 'i':
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case 'I':
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if ($len==1) return "minute($col)";
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if ($col != $this->sysDate)
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$s .= "right(digits(minute($col)),2)";
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else $s .= "''";
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break;
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case 'S':
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case 's':
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if ($len==1) return "second($col)";
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if ($col != $this->sysDate)
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$s .= "right(digits(second($col)),2)";
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else $s .= "''";
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break;
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default:
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if ($ch == '\\') {
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$i++;
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$ch = substr($fmt,$i,1);
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}
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$s .= $this->qstr($ch);
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}
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}
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return $s;
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}
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function ServerInfo()
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{
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$row = $this->GetRow("SELECT service_level, fixpack_num FROM TABLE(sysproc.env_get_inst_info())
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as INSTANCEINFO");
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if ($row) {
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$info['version'] = $row[0].':'.$row[1];
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$info['fixpack'] = $row[1];
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$info['description'] = '';
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} else {
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return ADOConnection::ServerInfo();
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}
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return $info;
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}
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function CreateSequence($seqname='adodbseq',$start=1)
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{
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if (empty($this->_genSeqSQL)) return false;
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$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname,$start));
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if (!$ok) return false;
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return true;
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}
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function DropSequence($seqname = 'adodbseq')
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{
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if (empty($this->_dropSeqSQL)) return false;
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return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
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}
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function SelectLimit($sql, $nrows = -1, $offset = -1, $inputArr = false, $secs2cache = 0)
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{
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$nrows = (integer) $nrows;
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if ($offset <= 0) {
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// could also use " OPTIMIZE FOR $nrows ROWS "
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if ($nrows >= 0) $sql .= " FETCH FIRST $nrows ROWS ONLY ";
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$rs = $this->Execute($sql,$inputArr);
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} else {
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if ($offset > 0 && $nrows < 0);
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else {
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$nrows += $offset;
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$sql .= " FETCH FIRST $nrows ROWS ONLY ";
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}
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$rs = ADOConnection::SelectLimit($sql,-1,$offset,$inputArr);
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}
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return $rs;
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}
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/*
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This algorithm is not very efficient, but works even if table locking
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is not available.
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Will return false if unable to generate an ID after $MAXLOOPS attempts.
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*/
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function GenID($seq='adodbseq',$start=1)
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{
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// if you have to modify the parameter below, your database is overloaded,
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// or you need to implement generation of id's yourself!
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$num = $this->GetOne("VALUES NEXTVAL FOR $seq");
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return $num;
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}
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function ErrorMsg()
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{
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if ($this->_haserrorfunctions) {
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if ($this->_errorMsg !== false) return $this->_errorMsg;
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if (empty($this->_connectionID)) return @db2_conn_errormsg();
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return @db2_conn_errormsg($this->_connectionID);
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} else return ADOConnection::ErrorMsg();
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}
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function ErrorNo()
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{
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if ($this->_haserrorfunctions) {
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if ($this->_errorCode !== false) {
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// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
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return (strlen($this->_errorCode)<=2) ? 0 : $this->_errorCode;
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}
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if (empty($this->_connectionID)) $e = @db2_conn_error();
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else $e = @db2_conn_error($this->_connectionID);
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// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
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// so we check and patch
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if (strlen($e)<=2) return 0;
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return $e;
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} else return ADOConnection::ErrorNo();
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}
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function BeginTrans()
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{
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if (!$this->hasTransactions) return false;
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if ($this->transOff) return true;
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$this->transCnt += 1;
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$this->_autocommit = false;
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return db2_autocommit($this->_connectionID,false);
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}
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function CommitTrans($ok=true)
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{
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if ($this->transOff) return true;
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if (!$ok) return $this->RollbackTrans();
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if ($this->transCnt) $this->transCnt -= 1;
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$this->_autocommit = true;
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$ret = db2_commit($this->_connectionID);
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db2_autocommit($this->_connectionID,true);
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return $ret;
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}
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function RollbackTrans()
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{
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if ($this->transOff) return true;
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if ($this->transCnt) $this->transCnt -= 1;
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$this->_autocommit = true;
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$ret = db2_rollback($this->_connectionID);
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db2_autocommit($this->_connectionID,true);
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return $ret;
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}
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function MetaPrimaryKeys($table, $owner = false)
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{
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global $ADODB_FETCH_MODE;
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if ($this->uCaseTables) $table = strtoupper($table);
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$schema = '';
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$this->_findschema($table,$schema);
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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$qid = @db2_primarykeys($this->_connectionID,'',$schema,$table);
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if (!$qid) {
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$ADODB_FETCH_MODE = $savem;
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return false;
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}
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$rs = new ADORecordSet_db2($qid);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) return false;
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$arr = $rs->GetArray();
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$rs->Close();
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$arr2 = array();
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for ($i=0; $i < sizeof($arr); $i++) {
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if ($arr[$i][3]) $arr2[] = $arr[$i][3];
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}
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return $arr2;
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}
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function MetaForeignKeys($table, $owner = FALSE, $upper = FALSE, $asociative = FALSE )
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{
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global $ADODB_FETCH_MODE;
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if ($this->uCaseTables) $table = strtoupper($table);
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$schema = '';
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$this->_findschema($table,$schema);
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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$qid = @db2_foreign_keys($this->_connectionID,'',$schema,$table);
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if (!$qid) {
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$ADODB_FETCH_MODE = $savem;
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return false;
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}
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$rs = new ADORecordSet_db2($qid);
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$ADODB_FETCH_MODE = $savem;
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/*
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$rs->fields indices
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0 PKTABLE_CAT
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1 PKTABLE_SCHEM
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2 PKTABLE_NAME
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3 PKCOLUMN_NAME
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4 FKTABLE_CAT
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5 FKTABLE_SCHEM
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6 FKTABLE_NAME
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7 FKCOLUMN_NAME
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*/
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if (!$rs) return false;
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$foreign_keys = array();
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while (!$rs->EOF) {
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if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) {
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if (!is_array($foreign_keys[$rs->fields[5].'.'.$rs->fields[6]]))
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$foreign_keys[$rs->fields[5].'.'.$rs->fields[6]] = array();
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$foreign_keys[$rs->fields[5].'.'.$rs->fields[6]][$rs->fields[7]] = $rs->fields[3];
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}
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$rs->MoveNext();
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}
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$rs->Close();
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return $foreign_key;
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}
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function MetaTables($ttype = false, $schema = false, $mask = false)
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{
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global $ADODB_FETCH_MODE;
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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$qid = db2_tables($this->_connectionID);
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$rs = new ADORecordSet_db2($qid);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) {
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$false = false;
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return $false;
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}
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$arr = $rs->GetArray();
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$rs->Close();
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$arr2 = array();
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if ($ttype) {
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$isview = strncmp($ttype,'V',1) === 0;
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}
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for ($i=0; $i < sizeof($arr); $i++) {
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if (!$arr[$i][2]) continue;
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$type = $arr[$i][3];
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$owner = $arr[$i][1];
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$schemaval = ($schema) ? $arr[$i][1].'.' : '';
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if ($ttype) {
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if ($isview) {
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if (strncmp($type,'V',1) === 0) $arr2[] = $schemaval.$arr[$i][2];
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} else if (strncmp($owner,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2];
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} else if (strncmp($owner,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2];
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}
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return $arr2;
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}
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|
|
/*
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|
See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/db2/htm/db2datetime_data_type_changes.asp
|
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/ SQL data type codes /
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|
#define SQL_UNKNOWN_TYPE 0
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#define SQL_CHAR 1
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#define SQL_NUMERIC 2
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#define SQL_DECIMAL 3
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#define SQL_INTEGER 4
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#define SQL_SMALLINT 5
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#define SQL_FLOAT 6
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#define SQL_REAL 7
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#define SQL_DOUBLE 8
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#if (DB2VER >= 0x0300)
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#define SQL_DATETIME 9
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#endif
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#define SQL_VARCHAR 12
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|
|
|
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/ One-parameter shortcuts for date/time data types /
|
|
#if (DB2VER >= 0x0300)
|
|
#define SQL_TYPE_DATE 91
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|
#define SQL_TYPE_TIME 92
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#define SQL_TYPE_TIMESTAMP 93
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|
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#define SQL_UNICODE (-95)
|
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#define SQL_UNICODE_VARCHAR (-96)
|
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#define SQL_UNICODE_LONGVARCHAR (-97)
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*/
|
|
function DB2Types($t)
|
|
{
|
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switch ((integer)$t) {
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case 1:
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|
case 12:
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|
case 0:
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case -95:
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case -96:
|
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return 'C';
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case -97:
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case -1: //text
|
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return 'X';
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|
case -4: //image
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|
return 'B';
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|
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case 9:
|
|
case 91:
|
|
return 'D';
|
|
|
|
case 10:
|
|
case 11:
|
|
case 92:
|
|
case 93:
|
|
return 'T';
|
|
|
|
case 4:
|
|
case 5:
|
|
case -6:
|
|
return 'I';
|
|
|
|
case -11: // uniqidentifier
|
|
return 'R';
|
|
case -7: //bit
|
|
return 'L';
|
|
|
|
default:
|
|
return 'N';
|
|
}
|
|
}
|
|
|
|
function MetaColumns($table, $normalize=true)
|
|
{
|
|
global $ADODB_FETCH_MODE;
|
|
|
|
$false = false;
|
|
if ($this->uCaseTables) $table = strtoupper($table);
|
|
$schema = '';
|
|
$this->_findschema($table,$schema);
|
|
|
|
$savem = $ADODB_FETCH_MODE;
|
|
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
|
|
|
|
$colname = "%";
|
|
$qid = db2_columns($this->_connectionID, "", $schema, $table, $colname);
|
|
if (empty($qid)) return $false;
|
|
|
|
$rs = new ADORecordSet_db2($qid);
|
|
$ADODB_FETCH_MODE = $savem;
|
|
|
|
if (!$rs) return $false;
|
|
$rs->_fetch();
|
|
|
|
$retarr = array();
|
|
|
|
/*
|
|
$rs->fields indices
|
|
0 TABLE_QUALIFIER
|
|
1 TABLE_SCHEM
|
|
2 TABLE_NAME
|
|
3 COLUMN_NAME
|
|
4 DATA_TYPE
|
|
5 TYPE_NAME
|
|
6 PRECISION
|
|
7 LENGTH
|
|
8 SCALE
|
|
9 RADIX
|
|
10 NULLABLE
|
|
11 REMARKS
|
|
*/
|
|
while (!$rs->EOF) {
|
|
if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) {
|
|
$fld = new ADOFieldObject();
|
|
$fld->name = $rs->fields[3];
|
|
$fld->type = $this->DB2Types($rs->fields[4]);
|
|
|
|
// ref: http://msdn.microsoft.com/library/default.asp?url=/archive/en-us/dnaraccgen/html/msdn_odk.asp
|
|
// access uses precision to store length for char/varchar
|
|
if ($fld->type == 'C' or $fld->type == 'X') {
|
|
if ($rs->fields[4] <= -95) // UNICODE
|
|
$fld->max_length = $rs->fields[7]/2;
|
|
else
|
|
$fld->max_length = $rs->fields[7];
|
|
} else
|
|
$fld->max_length = $rs->fields[7];
|
|
$fld->not_null = !empty($rs->fields[10]);
|
|
$fld->scale = $rs->fields[8];
|
|
$fld->primary_key = false;
|
|
$retarr[strtoupper($fld->name)] = $fld;
|
|
} else if (sizeof($retarr)>0)
|
|
break;
|
|
$rs->MoveNext();
|
|
}
|
|
$rs->Close();
|
|
if (empty($retarr)) $retarr = false;
|
|
|
|
$qid = db2_primary_keys($this->_connectionID, "", $schema, $table);
|
|
if (empty($qid)) return $false;
|
|
|
|
$rs = new ADORecordSet_db2($qid);
|
|
$ADODB_FETCH_MODE = $savem;
|
|
|
|
if (!$rs) return $retarr;
|
|
$rs->_fetch();
|
|
|
|
/*
|
|
$rs->fields indices
|
|
0 TABLE_CAT
|
|
1 TABLE_SCHEM
|
|
2 TABLE_NAME
|
|
3 COLUMN_NAME
|
|
4 KEY_SEQ
|
|
5 PK_NAME
|
|
*/
|
|
while (!$rs->EOF) {
|
|
if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) {
|
|
$retarr[strtoupper($rs->fields[3])]->primary_key = true;
|
|
} else if (sizeof($retarr)>0)
|
|
break;
|
|
$rs->MoveNext();
|
|
}
|
|
$rs->Close();
|
|
|
|
if (empty($retarr)) $retarr = false;
|
|
return $retarr;
|
|
}
|
|
|
|
|
|
function Prepare($sql)
|
|
{
|
|
if (! $this->_bindInputArray) return $sql; // no binding
|
|
$stmt = db2_prepare($this->_connectionID,$sql);
|
|
if (!$stmt) {
|
|
// we don't know whether db2 driver is parsing prepared stmts, so just return sql
|
|
return $sql;
|
|
}
|
|
return array($sql,$stmt,false);
|
|
}
|
|
|
|
/* returns queryID or false */
|
|
function _query($sql,$inputarr=false)
|
|
{
|
|
GLOBAL $php_errormsg;
|
|
if (isset($php_errormsg)) $php_errormsg = '';
|
|
$this->_error = '';
|
|
|
|
if ($inputarr) {
|
|
if (is_array($sql)) {
|
|
$stmtid = $sql[1];
|
|
} else {
|
|
$stmtid = db2_prepare($this->_connectionID,$sql);
|
|
|
|
if ($stmtid == false) {
|
|
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (! db2_execute($stmtid,$inputarr)) {
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = db2_stmt_errormsg();
|
|
$this->_errorCode = db2_stmt_error();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
} else if (is_array($sql)) {
|
|
$stmtid = $sql[1];
|
|
if (!db2_execute($stmtid)) {
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = db2_stmt_errormsg();
|
|
$this->_errorCode = db2_stmt_error();
|
|
}
|
|
return false;
|
|
}
|
|
} else
|
|
$stmtid = @db2_exec($this->_connectionID,$sql);
|
|
|
|
$this->_lastAffectedRows = 0;
|
|
if ($stmtid) {
|
|
if (@db2_num_fields($stmtid) == 0) {
|
|
$this->_lastAffectedRows = db2_num_rows($stmtid);
|
|
$stmtid = true;
|
|
} else {
|
|
$this->_lastAffectedRows = 0;
|
|
}
|
|
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = '';
|
|
$this->_errorCode = 0;
|
|
} else
|
|
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
|
} else {
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = db2_stmt_errormsg();
|
|
$this->_errorCode = db2_stmt_error();
|
|
} else
|
|
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
|
|
|
}
|
|
return $stmtid;
|
|
}
|
|
|
|
/*
|
|
Insert a null into the blob field of the table first.
|
|
Then use UpdateBlob to store the blob.
|
|
|
|
Usage:
|
|
|
|
$conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)');
|
|
$conn->UpdateBlob('blobtable','blobcol',$blob,'id=1');
|
|
*/
|
|
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
|
|
{
|
|
return $this->Execute("UPDATE $table SET $column=? WHERE $where",array($val)) != false;
|
|
}
|
|
|
|
// returns true or false
|
|
function _close()
|
|
{
|
|
$ret = @db2_close($this->_connectionID);
|
|
$this->_connectionID = false;
|
|
return $ret;
|
|
}
|
|
|
|
function _affectedrows()
|
|
{
|
|
return $this->_lastAffectedRows;
|
|
}
|
|
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------------------
|
|
Class Name: Recordset
|
|
--------------------------------------------------------------------------------------*/
|
|
|
|
class ADORecordSet_db2 extends ADORecordSet {
|
|
|
|
var $bind = false;
|
|
var $databaseType = "db2";
|
|
var $dataProvider = "db2";
|
|
var $useFetchArray;
|
|
|
|
function __construct($id,$mode=false)
|
|
{
|
|
if ($mode === false) {
|
|
global $ADODB_FETCH_MODE;
|
|
$mode = $ADODB_FETCH_MODE;
|
|
}
|
|
$this->fetchMode = $mode;
|
|
|
|
$this->_queryID = $id;
|
|
}
|
|
|
|
|
|
// returns the field object
|
|
function FetchField($offset = -1)
|
|
{
|
|
$o= new ADOFieldObject();
|
|
$o->name = @db2_field_name($this->_queryID,$offset);
|
|
$o->type = @db2_field_type($this->_queryID,$offset);
|
|
$o->max_length = db2_field_width($this->_queryID,$offset);
|
|
if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name);
|
|
else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name);
|
|
return $o;
|
|
}
|
|
|
|
/* Use associative array to get fields array */
|
|
function Fields($colname)
|
|
{
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
|
|
if (!$this->bind) {
|
|
$this->bind = array();
|
|
for ($i=0; $i < $this->_numOfFields; $i++) {
|
|
$o = $this->FetchField($i);
|
|
$this->bind[strtoupper($o->name)] = $i;
|
|
}
|
|
}
|
|
|
|
return $this->fields[$this->bind[strtoupper($colname)]];
|
|
}
|
|
|
|
|
|
function _initrs()
|
|
{
|
|
global $ADODB_COUNTRECS;
|
|
$this->_numOfRows = ($ADODB_COUNTRECS) ? @db2_num_rows($this->_queryID) : -1;
|
|
$this->_numOfFields = @db2_num_fields($this->_queryID);
|
|
// some silly drivers such as db2 as/400 and intersystems cache return _numOfRows = 0
|
|
if ($this->_numOfRows == 0) $this->_numOfRows = -1;
|
|
}
|
|
|
|
function _seek($row)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// speed up SelectLimit() by switching to ADODB_FETCH_NUM as ADODB_FETCH_ASSOC is emulated
|
|
function GetArrayLimit($nrows,$offset=-1)
|
|
{
|
|
if ($offset <= 0) {
|
|
$rs = $this->GetArray($nrows);
|
|
return $rs;
|
|
}
|
|
$savem = $this->fetchMode;
|
|
$this->fetchMode = ADODB_FETCH_NUM;
|
|
$this->Move($offset);
|
|
$this->fetchMode = $savem;
|
|
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields = $this->GetRowAssoc();
|
|
}
|
|
|
|
$results = array();
|
|
$cnt = 0;
|
|
while (!$this->EOF && $nrows != $cnt) {
|
|
$results[$cnt++] = $this->fields;
|
|
$this->MoveNext();
|
|
}
|
|
|
|
return $results;
|
|
}
|
|
|
|
|
|
function MoveNext()
|
|
{
|
|
if ($this->_numOfRows != 0 && !$this->EOF) {
|
|
$this->_currentRow++;
|
|
|
|
$this->fields = @db2_fetch_array($this->_queryID);
|
|
if ($this->fields) {
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields = $this->GetRowAssoc();
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
$this->fields = false;
|
|
$this->EOF = true;
|
|
return false;
|
|
}
|
|
|
|
function _fetch()
|
|
{
|
|
|
|
$this->fields = db2_fetch_array($this->_queryID);
|
|
if ($this->fields) {
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields = $this->GetRowAssoc();
|
|
}
|
|
return true;
|
|
}
|
|
$this->fields = false;
|
|
return false;
|
|
}
|
|
|
|
function _close()
|
|
{
|
|
return @db2_free_result($this->_queryID);
|
|
}
|
|
|
|
}
|
|
|