edu.umd.cloud9.io.pair
Class PairOfWritables<L extends Writable,R extends Writable>

java.lang.Object
  edu.umd.cloud9.io.pair.PairOfWritables<L,R>

All Implemented Interfaces:

Writable

public class PairOfWritables<L extends Writable,R extends Writable>
extends Object
implements Writable

Class representing pair of Writables.

Constructor Summary

PairOfWritables()
Creates a new PairOfWritables.

PairOfWritables(L left, R right)
Creates a new PairOfWritables.

Method Summary

L	getKey() Returns the key (left element).
L	getLeftElement() Returns the left element.
R	getRightElement() Returns the right element.
R	getValue() Returns the value (right element).
void	readFields(DataInput in) Deserializes the pair.
void	set(L left, R right) Sets the right and left elements of this pair.
String	toString() Generates human-readable String representation of this pair.
void	write(DataOutput out) Serializes this pair.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PairOfWritables

public PairOfWritables()

Creates a new PairOfWritables.

PairOfWritables

public PairOfWritables(L left,
                       R right)

Creates a new PairOfWritables.

Method Detail

readFields

public void readFields(DataInput in)
                throws IOException

Deserializes the pair.

Specified by:

readFields in interface Writable

Parameters:

in - source for raw byte representation

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Serializes this pair.

Specified by:

write in interface Writable

Parameters:

out - where to write the raw byte representation

Throws:

IOException

getLeftElement

public L getLeftElement()

Returns the left element.

Returns:

the left element

getRightElement

public R getRightElement()

Returns the right element.

Returns:

the right element

getKey

public L getKey()

Returns the key (left element).

Returns:

the key

getValue

public R getValue()

Returns the value (right element).

Returns:

the value

set

public void set(L left,
                R right)

Sets the right and left elements of this pair.

Parameters:

left - the left element

right - the right element

toString

public String toString()

Generates human-readable String representation of this pair.

Overrides:

toString in class Object

Returns:

human-readable String representation of this pair