<?php/**  V4.94 23 Jan 2007  (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.  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. */// security - hide pathsif (!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 $renameColumn = 'ALTER TABLE %s CHANGE COLUMN %s %s %s';	// needs column-definition!		function MetaType($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;				$len = -1; // mysql max_length is not accurate		switch (strtoupper($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 $is_serial ? 'R' : 'I8';		default: return 'N';		}	}	function ActualType($meta)	{		switch(strtoupper($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 '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;	}}?>