edu.umd.cloud9.io
Class PairOfStrings

java.lang.Object
  edu.umd.cloud9.io.PairOfStrings

All Implemented Interfaces:

Comparable, Writable, WritableComparable

public class PairOfStrings
extends Object
implements WritableComparable

WritableComparable representing a pair of Strings. The elements in the pair are referred to as the left and right elements. The natural sort order is: first by the left element, and then by the right element.

Constructor Summary

PairOfStrings()
Creates a pair.

PairOfStrings(String left, String right)
Creates a pair.

Method Summary

PairOfStrings	clone() Clones this object.
int	compareTo(Object obj) Defines a natural sort order for pairs.
boolean	equals(Object obj) Checks two pairs for equality.
String	getLeftElement() Returns the left element.
String	getRightElement() Returns the right element.
int	hashCode() Returns a hash code value for the pair.
void	readFields(DataInput in) Deserializes the pair.
void	set(String left, String 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

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PairOfStrings

public PairOfStrings()

Creates a pair.

PairOfStrings

public PairOfStrings(String left,
                     String right)

Creates a pair.

Parameters:

left - the left element

right - the right element

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 String getLeftElement()

Returns the left element.

Returns:

the left element

getRightElement

public String getRightElement()

Returns the right element.

Returns:

the right element

set

public void set(String left,
                String right)

Sets the right and left elements of this pair.

Parameters:

left - the left element

right - the right element

equals

public boolean equals(Object obj)

Checks two pairs for equality.

Overrides:

equals in class Object

Parameters:

obj - object for comparison

Returns:

true if obj is equal to this object, false otherwise

compareTo

public int compareTo(Object obj)

Defines a natural sort order for pairs. Pairs are sorted first by the left element, and then by the right element.

Specified by:

compareTo in interface Comparable

Returns:

a value less than zero, a value greater than zero, or zero if this pair should be sorted before, sorted after, or is equal to obj.

hashCode

public int hashCode()

Returns a hash code value for the pair.

Overrides:

hashCode in class Object

Returns:

hash code for the pair

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

clone

public PairOfStrings clone()

Clones this object.

Overrides:

clone in class Object

Returns:

clone of this object