mysqli_meta_module.inc

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	function MetaIndexes ($table, $primary = FALSE, $owner=false)
	{
        // save old fetch mode
        global $ADODB_FETCH_MODE;
        
		$false = false;
        $save = $ADODB_FETCH_MODE;
        $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
        if ($this->fetchMode !== FALSE) {
               $savem = $this->SetFetchMode(FALSE);
        }
        
        // get index details
        $rs =& $this->Execute(sprintf('SHOW INDEX FROM %s',$table));
        
        // restore fetchmode
        if (isset($savem)) {
                $this->SetFetchMode($savem);
        }
        $ADODB_FETCH_MODE = $save;
        
        if (!is_object($rs)) {
                return $false;
        }
        
        $indexes = array ();
        
        // parse index data into array
        while (!$rs->EOF)
        {
                if ($primary == FALSE AND $rs->fields[2] == 'PRIMARY') {
                	$rs->MoveNext();
                        continue;
                }

                if (!isset($indexes[$rs->fields[2]])) {
                        $indexes[$rs->fields[2]] = array(
                                'unique' => ($rs->fields[1] == 0),
                                'columns' => array()
                        );
                }

                $indexes[$rs->fields[2]]['columns'][$rs->fields[3] - 1] = $rs->fields[4];

        	$rs->MoveNext();
        }
        
        // sort columns by order in the index
        foreach ( array_keys ($indexes) as $index )
        {
                ksort ($indexes[$index]['columns']);
        }
        
        return $indexes;
	}

	/**
	 * List columns names in a table as an array. 
	 * @param table	table name to query
	 *
	 * @return  array of column names for current table.
	 */ 
	function &MetaColumnNames($table, $numIndexes=false) 
	{
		$objarr =& $this->MetaColumns($table);
		if (!is_array($objarr)) {
			$false = false;
			return $false;
		}
		$arr = array();
		if ($numIndexes) {
			$i = 0;
			foreach($objarr as $v) $arr[$i++] = $v->name;
		} else
			foreach($objarr as $v) $arr[strtoupper($v->name)] = $v->name;

		return $arr;
	}

	function MetaTransaction($mode,$db)
	{
		$mode = strtoupper($mode);
		$mode = str_replace('ISOLATION LEVEL ','',$mode);
		
		switch($mode) {

		case 'READ UNCOMMITTED':
			switch($db) { 
			case 'oci8':
			case 'oracle':
				return 'ISOLATION LEVEL READ COMMITTED';
			default:
				return 'ISOLATION LEVEL READ UNCOMMITTED';
			}
			break;
					
		case 'READ COMMITTED':
				return 'ISOLATION LEVEL READ COMMITTED';
			break;
			
		case 'REPEATABLE READ':
			switch($db) {
			case 'oci8':
			case 'oracle':
				return 'ISOLATION LEVEL SERIALIZABLE';
			default:
				return 'ISOLATION LEVEL REPEATABLE READ';
			}
			break;
			
		case 'SERIALIZABLE':
				return 'ISOLATION LEVEL SERIALIZABLE';
			break;
			
		default:
			return $mode;
		}
	}

}

eval('class mysqli_meta_resultset_EXTENDER extends '. $last_module . '_ResultSet { }');

class mysqli_meta_ResultSet extends mysqli_meta_resultset_EXTENDER
{
	/**
	 * Get the metatype of the column. This is used for formatting. This is because
	 * many databases use different names for the same type, so we transform the original
	 * type to our standardised version which uses 1 character codes:
	 *
	 * @param t  is the type passed in. Normally is ADOFieldObject->type.
	 * @param len is the maximum length of that field. This is because we treat character
	 * 	fields bigger than a certain size as a 'B' (blob).
	 * @param fieldobj is the field object returned by the database driver. Can hold
	 *	additional info (eg. primary_key for mysql).
	 * 
	 * @return the general type of the data: 
	 *	C for character < 250 chars
	 *	X for teXt (>= 250 chars)
	 *	B for Binary
	 * 	N for numeric or floating point
	 *	D for date
	 *	T for timestamp
	 * 	L for logical/Boolean
	 *	I for integer
	 *	R for autoincrement counter/integer
	 * 
	 *
	*/
	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		
		$len = -1; // mysql max_length is not accurate
		switch (strtoupper($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 'INT': 
		case 'INTEGER':
		case 'BIGINT':
		case 'TINYINT':
		case 'MEDIUMINT':
		case 'SMALLINT': 
			
			if (!empty($fieldobj->primary_key)) return 'R';
			else return 'I';
		
		default:
			static $typeMap = array(
		'VARCHAR' => 'C',
		'VARCHAR2' => 'C',
		'CHAR' => 'C',
		'C' => 'C',
		'STRING' => 'C',
		'NCHAR' => 'C',
		'NVARCHAR' => 'C',
		'VARYING' => 'C',
		'BPCHAR' => 'C',
		'CHARACTER' => 'C',
		'INTERVAL' => 'C',  # Postgres
		'MACADDR' => 'C', # postgres
		##
		'LONGCHAR' => 'X',
		'TEXT' => 'X',
		'NTEXT' => 'X',
		'M' => 'X',
		'X' => 'X',
		'CLOB' => 'X',
		'NCLOB' => 'X',
		'LVARCHAR' => 'X',
		##
		'BLOB' => 'B',
		'IMAGE' => 'B',
		'BINARY' => 'B',
		'VARBINARY' => 'B',
		'LONGBINARY' => 'B',
		'B' => 'B',
		##
		'YEAR' => 'D', // mysql
		'DATE' => 'D',
		'D' => 'D',
		##
		'UNIQUEIDENTIFIER' => 'C', # MS SQL Server
		##
		'TIME' => 'T',
		'TIMESTAMP' => 'T',
		'DATETIME' => 'T',
		'TIMESTAMPTZ' => 'T',
		'T' => 'T',
		'TIMESTAMP WITHOUT TIME ZONE' => 'T', // postgresql
		##
		'BOOL' => 'L',
		'BOOLEAN' => 'L', 
		'BIT' => 'L',
		'L' => 'L',
		##
		'COUNTER' => 'R',
		'R' => 'R',
		'SERIAL' => 'R', // ifx
		'INT IDENTITY' => 'R',
		##
		'INT' => 'I',
		'INT2' => 'I',
		'INT4' => 'I',
		'INT8' => 'I',
		'INTEGER' => 'I',
		'INTEGER UNSIGNED' => 'I',
		'SHORT' => 'I',
		'TINYINT' => 'I',
		'SMALLINT' => 'I',
		'I' => 'I',
		##
		'LONG' => 'N', // interbase is numeric, oci8 is blob
		'BIGINT' => 'N', // this is bigger than PHP 32-bit integers
		'DECIMAL' => 'N',
		'DEC' => 'N',
		'REAL' => 'N',
		'DOUBLE' => 'N',
		'DOUBLE PRECISION' => 'N',
		'SMALLFLOAT' => 'N',
		'FLOAT' => 'N',
		'NUMBER' => 'N',
		'NUM' => 'N',
		'NUMERIC' => 'N',
		'MONEY' => 'N',
		
		## informix 9.2
		'SQLINT' => 'I', 
		'SQLSERIAL' => 'I', 
		'SQLSMINT' => 'I', 
		'SQLSMFLOAT' => 'N', 
		'SQLFLOAT' => 'N', 
		'SQLMONEY' => 'N', 
		'SQLDECIMAL' => 'N', 
		'SQLDATE' => 'D', 
		'SQLVCHAR' => 'C', 
		'SQLCHAR' => 'C', 
		'SQLDTIME' => 'T', 
		'SQLINTERVAL' => 'N', 
		'SQLBYTES' => 'B', 
		'SQLTEXT' => 'X',
		 ## informix 10
		"SQLINT8" => 'I8',
		"SQLSERIAL8" => 'I8',
		"SQLNCHAR" => 'C',
		"SQLNVCHAR" => 'C',
		"SQLLVARCHAR" => 'X',
		"SQLBOOL" => 'L'
		);
		
		$tmap = false;
		$t = strtoupper($t);
		$tmap = (isset($typeMap[$t])) ? $typeMap[$t] : 'N';
			if ($t == 'LONG' && $this->dataProvider == 'oci8') return 'B';
			return $tmap;
		}
	}

}

?>