MBtreeKey Class Reference

class MBtreeKey

Interface for ordering and creating keys for entries in a B-tree.

Derived classes implement this interface for particular types of key.

Public Member Functions
void	Between(const TAny , const TAny , TBtreePivot &)
TInt	Compare(const TAny , const TAny )
IMPORT_C const TAny *	Key(const TAny *)

Member Functions Documentation

Gets the midpoint between two keys.

The generated midpoint will be greater or equal to aLeft (by a comparison performed by the Compare() function), and less than aRight.

const TAny * aLeft	First key
const TAny * aRight	Second key
TBtreePivot & aPivot	On return, the midpoint between the two keys

Orders two keys.

const TAny * aLeft	Pointer to first key
const TAny * aRight	Pointer to second key

IMPORT_C const TAny *

Key

(

const TAny *

anEntry

)

const [virtual]

Gets the key value for an entry.

const TAny * anEntry

Object for which to get the key value