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See Release Notes

  • Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
  • Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
  • PHP version: minimum PHP 7.3.0 Note: the minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is also supported.
<?php
/**
< @version v5.21.0 2021-02-27 < @copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved. < @copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community < Released under both BSD license and Lesser GPL library license. < Whenever there is any discrepancy between the two licenses, < the BSD license will take precedence. < < Set tabs to 4 for best viewing. <
> * Data Dictionary for DB2. > * > * This file is part of ADOdb, a Database Abstraction Layer library for PHP. > * > * @package ADOdb > * @link https://adodb.org Project's web site and documentation > * @link https://github.com/ADOdb/ADOdb Source code and issue tracker > * > * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause > * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option, > * any later version. This means you can use it in proprietary products. > * See the LICENSE.md file distributed with this source code for details. > * @license BSD-3-Clause > * @license LGPL-2.1-or-later > * > * @copyright 2000-2013 John Lim > * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
>
// security - hide paths if (!defined('ADODB_DIR')) die(); class ADODB2_db2 extends ADODB_DataDict { var $databaseType = 'db2'; var $seqField = false; var $dropCol = 'ALTER TABLE %s DROP COLUMN %s'; public $blobAllowsDefaultValue = true; public $blobAllowsNotNull = true; function ActualType($meta) { switch($meta) { case 'C': return 'VARCHAR'; case 'XL': return 'CLOB'; case 'X': return 'VARCHAR(3600)'; case 'C2': return 'VARCHAR'; // up to 32K case 'X2': return 'VARCHAR(3600)'; // up to 32000, but default page size too small case 'B': return 'BLOB'; case 'D': return 'DATE'; case 'TS': case 'T': return 'TIMESTAMP'; case 'L': return 'SMALLINT'; case 'I': return 'INTEGER'; case 'I1': return 'SMALLINT'; case 'I2': return 'SMALLINT'; case 'I4': return 'INTEGER'; case 'I8': return 'BIGINT'; case 'F': return 'DOUBLE'; case 'N': return 'DECIMAL'; default: return $meta; } } // return string must begin with space function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned) { $suffix = ''; if ($fautoinc) return ' GENERATED ALWAYS AS IDENTITY'; # as identity start with if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault"; if ($fnotnull) $suffix .= ' NOT NULL'; if ($fconstraint) $suffix .= ' '.$fconstraint; return $suffix; } function alterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') { $tabname = $this->TableName ($tabname); $sql = array(); list($lines,$pkey,$idxs) = $this->_GenFields($flds); // genfields can return FALSE at times if ($lines == null) $lines = array(); $alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' '; $dataTypeWords = array('SET','DATA','TYPE'); foreach($lines as $v) { /* * We must now post-process the line to insert the 'SET DATA TYPE' * text into the alter statement */ $e = explode(' ',$v); array_splice($e,1,0,$dataTypeWords); $v = implode(' ',$e); $sql[] = $alter . $v; } if (is_array($idxs)) { foreach($idxs as $idx => $idxdef) { $sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']); $sql = array_merge($sql, $sql_idxs); } } return $sql; } function dropColumnSql($tabname, $flds, $tableflds='',$tableoptions='') { $tabname = $this->connection->getMetaCasedValue($tabname); $flds = $this->connection->getMetaCasedValue($flds); if (ADODB_ASSOC_CASE == ADODB_ASSOC_CASE_NATIVE ) { /* * METACASE_NATIVE */ $tabname = $this->connection->nameQuote . $tabname . $this->connection->nameQuote; $flds = $this->connection->nameQuote . $flds . $this->connection->nameQuote; } $sql = sprintf($this->dropCol,$tabname,$flds); return (array)$sql; } function changeTableSQL($tablename, $flds, $tableoptions = false, $dropOldFields=false) { /** Allow basic table changes to DB2 databases DB2 will fatally reject changes to non character columns */ $validTypes = array("CHAR","VARC"); $invalidTypes = array("BIGI","BLOB","CLOB","DATE", "DECI","DOUB", "INTE", "REAL","SMAL", "TIME"); // check table exists $cols = $this->metaColumns($tablename); if ( empty($cols)) { return $this->createTableSQL($tablename, $flds, $tableoptions); } // already exists, alter table instead list($lines,$pkey) = $this->_GenFields($flds); $alter = 'ALTER TABLE ' . $this->tableName($tablename); $sql = array(); foreach ( $lines as $id => $v ) { /* * If the metaCasing was NATIVE the col returned with nameQuotes * around the field. We need to remove this for the metaColumn * match */ $id = str_replace($this->connection->nameQuote,'',$id); if ( isset($cols[$id]) && is_object($cols[$id]) ) { /** If the first field of $v is the fieldname, and the second is the field type/size, we assume its an attempt to modify the column size, so check that it is allowed $v can have an indeterminate number of blanks between the fields, so account for that too */ $vargs = explode(' ' , $v); // assume that $vargs[0] is the field name. $i=0; // Find the next non-blank value; for ($i=1;$i<sizeof($vargs);$i++) if ($vargs[$i] != '') break; // if $vargs[$i] is one of the following, we are trying to change the // size of the field, if not allowed, simply ignore the request. if (in_array(substr($vargs[$i],0,4),$invalidTypes)) continue; // insert the appropriate DB2 syntax if (in_array(substr($vargs[$i],0,4),$validTypes)) { array_splice($vargs,$i,0,array('SET','DATA','TYPE')); } // Now Look for the NOT NULL statement as this is not allowed in // the ALTER table statement. If it is in there, remove it if (in_array('NOT',$vargs) && in_array('NULL',$vargs)) { for ($i=1;$i<sizeof($vargs);$i++) if ($vargs[$i] == 'NOT') break; array_splice($vargs,$i,2,''); } $v = implode(' ',$vargs); $sql[] = $alter . $this->alterCol . ' ' . $v; } else { $sql[] = $alter . $this->addCol . ' ' . $v; } } return $sql; } }