de.unknownreality.dataframe.common

Class MultiKey

java.lang.Object

de.unknownreality.dataframe.common.MultiKey

public class MultiKey
extends Object

Created by Alex on 27.05.2016.

Constructor Summary

Constructors

Constructor and Description
MultiKey(Comparable[] values) Creates an multi key for an array of Comparable.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Returns true if another object equals this key.
Object[]	getValues() Returns the values in this key
int	hashCode() Returns the hash code of this key.
String	toString() Returns a string representing this key.
void	update(int index, Comparable value) Updates the value at a specified index with a new value
void	updateHash() Updates the hash code if this index

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MultiKey

public MultiKey(Comparable[] values)

Creates an multi key for an array of Comparable.

Parameters:

values - key values

Method Detail

update

public void update(int index,
                   Comparable value)

Updates the value at a specified index with a new value

Parameters:

index - index of value

value - new value

updateHash

public void updateHash()

Updates the hash code if this index

equals

public boolean equals(Object o)

Returns true if another object equals this key. The hash is compared in the first step. If both hashes are equal, the values of both keys are compared

Overrides:

equals in class Object

Parameters:

o - other object

Returns:

true if the other object equals this key

getValues

public Object[] getValues()

Returns the values in this key

Returns:

key values

toString

public String toString()

Returns a string representing this key.

Overrides:

toString in class Object

Returns:

string representation

hashCode

public int hashCode()

Returns the hash code of this key. The hash is based on all key values.

Overrides:

hashCode in class Object

Returns:

key hash code