Package org.apache.poi.ss.formula

Class ColumnCache

java.lang.Object

org.apache.poi.ss.formula.ColumnCache

All Implemented Interfaces:

Serializable

public class ColumnCache
extends Object
implements Serializable

Performance optimization for Vlookup. This class stores the calculated and sorted values of the column to improve the lookup speed.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
ColumnCache()

Method Summary

Modifier and Type	Method	Description
void	clear(int start, int end)
boolean	contains(int index)
SortedValues	get(int index)
void	put(int index, SortedValues pool)
void	remove(int index)

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnCache

public ColumnCache()

Method Detail

contains

public boolean contains(int index)

get

public SortedValues get(int index)

put

public void put(int index,
                SortedValues pool)

remove

public void remove(int index)

clear

public void clear(int start,
                  int end)