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✏️ Editing: datadict-mysql.inc.php

<?php
/**
 * Data Dictionary for MySQL.
 *
 * 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_mysql extends ADODB_DataDict {
	var $databaseType = 'mysql';
	var $alterCol = ' MODIFY COLUMN';
	var $alterTableAddIndex = true;
	var $dropTable = 'DROP TABLE IF EXISTS %s'; // requires mysql 3.22 or later

var $dropIndex = 'DROP INDEX %s ON %s';
	var $renameColumn = 'ALTER TABLE %s CHANGE COLUMN %s %s %s';	// needs column-definition!

public $blobAllowsNotNull = true;
	
	function metaType($t,$len=-1,$fieldobj=false)
	{
		
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		$is_serial = is_object($fieldobj) && $fieldobj->primary_key && $fieldobj->auto_increment;

$len = -1; // mysql max_length is not accurate
			
		$t = strtoupper($t);
		
		if (array_key_exists($t,$this->connection->customActualTypes))
			return  $this->connection->customActualTypes[$t];
		
		switch ($t) {
			
		case 'STRING':
		case 'CHAR':
		case 'VARCHAR':
		case 'TINYBLOB':
		case 'TINYTEXT':
		case 'ENUM':
		case 'SET':
			if ($len <= $this->blobSize) return 'C';

case 'TEXT':
		case 'LONGTEXT':
		case 'MEDIUMTEXT':
			return 'X';

// php_mysql extension always returns 'blob' even if 'text'
		// so we have to check whether binary...
		case 'IMAGE':
		case 'LONGBLOB':
		case 'BLOB':
		case 'MEDIUMBLOB':
			return !empty($fieldobj->binary) ? 'B' : 'X';

case 'YEAR':
		case 'DATE': return 'D';

case 'TIME':
		case 'DATETIME':
		case 'TIMESTAMP': return 'T';

case 'FLOAT':
		case 'DOUBLE':
			return 'F';

case 'INT':
		case 'INTEGER': return $is_serial ? 'R' : 'I';
		case 'TINYINT': return $is_serial ? 'R' : 'I1';
		case 'SMALLINT': return $is_serial ? 'R' : 'I2';
		case 'MEDIUMINT': return $is_serial ? 'R' : 'I4';
		case 'BIGINT':  return $is_serial ? 'R' : 'I8';
		default: 
			
			return ADODB_DEFAULT_METATYPE;
		}
	}

function ActualType($meta)
	{
		
		$meta = strtoupper($meta);
		
		/*
		* Add support for custom meta types. We do this
		* first, that allows us to override existing types
		*/
		if (isset($this->connection->customMetaTypes[$meta]))
			return $this->connection->customMetaTypes[$meta]['actual'];
				
		switch($meta) 
		{
		
		case 'C': return 'VARCHAR';
		case 'XL':return 'LONGTEXT';
		case 'X': return 'TEXT';

case 'C2': return 'VARCHAR';
		case 'X2': return 'LONGTEXT';

case 'B': return 'LONGBLOB';

case 'D': return 'DATE';
		case 'TS':
		case 'T': return 'DATETIME';
		case 'L': return 'TINYINT';

case 'R':
		case 'I4':
		case 'I': return 'INTEGER';
		case 'I1': return 'TINYINT';
		case 'I2': return 'SMALLINT';
		case 'I8': return 'BIGINT';

case 'F': return 'DOUBLE';
		case 'N': return 'NUMERIC';
			
		default:
			
			return $meta;
		}
	}

// return string must begin with space
	function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
	{
		$suffix = '';
		if ($funsigned) $suffix .= ' UNSIGNED';
		if ($fnotnull) $suffix .= ' NOT NULL';
		if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
		if ($fautoinc) $suffix .= ' AUTO_INCREMENT';
		if ($fconstraint) $suffix .= ' '.$fconstraint;
		return $suffix;
	}

/*
	CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
		[table_options] [select_statement]
		create_definition:
		col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
		[PRIMARY KEY] [reference_definition]
		or PRIMARY KEY (index_col_name,...)
		or KEY [index_name] (index_col_name,...)
		or INDEX [index_name] (index_col_name,...)
		or UNIQUE [INDEX] [index_name] (index_col_name,...)
		or FULLTEXT [INDEX] [index_name] (index_col_name,...)
		or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
		[reference_definition]
		or CHECK (expr)
	*/

/*
	CREATE [UNIQUE|FULLTEXT] INDEX index_name
		ON tbl_name (col_name[(length)],... )
	*/

function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
	{
		$sql = array();

if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
			if ($this->alterTableAddIndex) $sql[] = "ALTER TABLE $tabname DROP INDEX $idxname";
			else $sql[] = sprintf($this->dropIndex, $idxname, $tabname);

if ( isset($idxoptions['DROP']) )
				return $sql;
		}

if ( empty ($flds) ) {
			return $sql;
		}

if (isset($idxoptions['FULLTEXT'])) {
			$unique = ' FULLTEXT';
		} elseif (isset($idxoptions['UNIQUE'])) {
			$unique = ' UNIQUE';
		} else {
			$unique = '';
		}

if ( is_array($flds) ) $flds = implode(', ',$flds);

if ($this->alterTableAddIndex) $s = "ALTER TABLE $tabname ADD $unique INDEX $idxname ";
		else $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname;

$s .= ' (' . $flds . ')';

if ( isset($idxoptions[$this->upperName]) )
			$s .= $idxoptions[$this->upperName];

$sql[] = $s;

return $sql;
	}
}

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