org.apache.tapestry5.func

Class Tuple<A,B>

java.lang.Object

org.apache.tapestry5.func.Tuple<A,B>

Type Parameters:

A -

B -

public class Tuple<A,B>
extends Object

A Tuple holds two values of two different types.

Since:

5.3

Field Summary

Fields

Modifier and Type	Field and Description
A	first
B	second

Constructor Summary

Constructors

Constructor and Description
Tuple(A first, B second)

Method Summary

Modifier and Type	Method and Description
static <X,Y> Tuple<X,Y>	create(X first, Y second)
boolean	equals(Object obj) Compares this Tuple to another object.
protected void	extendDescription(StringBuilder builder) Overriden in subclasses to write additional values into the description.
int	hashCode() Returns a hash code value for the tuple, based on its values.
protected boolean	isMatch(Object other) The heart of equals(Object); the other object is the same class as this object.
String	toString() Returns the values of the tuple, separated by commas, enclosed in parenthesis.

Methods inherited from class java.lang.Object

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

Field Detail

first

public final A first

second

public final B second

Constructor Detail

Tuple

public Tuple(A first,
             B second)

Method Detail

create

public static <X,Y> Tuple<X,Y> create(X first,
                                      Y second)

toString

public String toString()

Returns the values of the tuple, separated by commas, enclosed in parenthesis. Example: ("Ace", "Spades").

Overrides:

toString in class Object

extendDescription

protected void extendDescription(StringBuilder builder)

Overriden in subclasses to write additional values into the description.

Parameters:

builder -

equals

public boolean equals(Object obj)

Compares this Tuple to another object. Equality is defined by: other object is not null, is same class as this Tuple, and all values are themselves equal.

Overrides:

equals in class Object

hashCode

public int hashCode()

Returns a hash code value for the tuple, based on its values.

Overrides:

hashCode in class Object

Returns:

a hash code value for this tuple.

Since:

5.6.2

isMatch

protected boolean isMatch(Object other)

The heart of equals(Object); the other object is the same class as this object.

Parameters:

other - other tuple to compare

Returns:

true if all values stored in tuple match