simpledb.index.btree
Class DirEntry

java.lang.Object
  simpledb.index.btree.DirEntry

public class DirEntry
extends Object

A directory entry has two components: the number of the child block, and the dataval of the first record in that block.

Author:

Edward Sciore

Constructor Summary

DirEntry(Constant dataval, int blocknum)
Creates a new entry for the specified dataval and block number.

Method Summary

int	blockNumber() Returns the block number component of the entry
Constant	dataVal() Returns the dataval component of the entry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DirEntry

public DirEntry(Constant dataval,
                int blocknum)

Creates a new entry for the specified dataval and block number.

Parameters:

dataval - the dataval

blocknum - the block number

Method Detail

dataVal

public Constant dataVal()

Returns the dataval component of the entry

Returns:

the dataval component of the entry

blockNumber

public int blockNumber()

Returns the block number component of the entry

Returns:

the block number component of the entry