org.helidb.util.bplus
Class KeyAndValue<K,V>

java.lang.Object
  org.helidb.util.bplus.KeyAndValue<K,V>

Type Parameters:

K - The type of keys in the record.

V - The type of values in the record. For a leaf node record, this is the type of values in the tree. For a non-leaf node record, this is Long.

All Implemented Interfaces:

Comparable<KeyAndValue<K,V>>

public final class KeyAndValue<K,V>
extends Object
implements Comparable<KeyAndValue<K,V>>

A key and a value stored in a B+ Tree record.

Since:

1.0

Author:

Karl Gustafsson

In_jar:

helidb-core

Constructor Summary

KeyAndValue(K key, V value)
Create a new key-value pair.

KeyAndValue(K key, V value, Comparator<? super K> cmp)
Create a new key-value pair.

Method Summary

int	compareTo(KeyAndValue<K,V> o2)
boolean	equals(Object o)
K	getKey()
V	getValue()
int	hashCode()
void	setKey(K key)
void	setValue(V v)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyAndValue

public KeyAndValue(K key,
                   V value,
                   Comparator<? super K> cmp)

Create a new key-value pair. Use the supplied Comparator to make the pair Comparable.

Parameters:

key - The key.

value - The value.

cmp - The comparator. This may be null if the keys are Comparable.

KeyAndValue

public KeyAndValue(K key,
                   V value)
            throws IllegalArgumentException

Create a new key-value pair. The key must be Comparable.

Parameters:

key - The key. Must be Comparable.

value - The value.

Throws:

IllegalArgumentException - If the key is not Comparable.

Method Detail

getKey

public K getKey()

setKey

public void setKey(K key)

getValue

public V getValue()

setValue

public void setValue(V v)

compareTo

public int compareTo(KeyAndValue<K,V> o2)

Specified by:

compareTo in interface Comparable<KeyAndValue<K,V>>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object