com.net2plan.utils

Class Quadruple<A,B,C,D>

Object

com.net2plan.utils.Quadruple<A,B,C,D>

Type Parameters:

A - Class type for the first element

B - Class type for the second element

C - Class type for the third element

D - Class type for the fourth element

public class Quadruple<A,B,C,D>
extends Object

A tuple consisting of four elements. There is no restriction on the type of the objects that may be stored.

Example:

Map<String, Object> map = new LinkedHashMap<>();
map.put("parameter", "value");
Integer number = new Integer(3);
String string = "Test";
List list = new ArrayList();

Quadruple<Map<String, Object>, Integer, String, List> data = new Quadruple<>(map, number, string, list);

...

Map<String, Object> myMap = data.getFirst();
Integer myNumber = data.getSecond();
String myString = data.getThird();
List myList = data.getFourth();

Since:

0.2.0

Author:

Pablo Pavon-Marino, Jose-Luis Izquierdo-Zaragoza

See Also:

Pair, Triple, Quintuple

Constructor Summary

Constructors

Constructor and Description
Quadruple(A a, B b, C c, D d, boolean isModifiable) Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o) Indicates whether some other object is "equal to" this one.
A	getFirst() Returns the first element from this quadruple.
D	getFourth() Returns the fourth element from this quadruple.
B	getSecond() Returns the second element from this quadruple.
C	getThird() Returns the third element from this quadruple.
int	hashCode() Returns a hash code value for the object.
boolean	isModifiable() Indicates whether or not elements from the pair can be changed after initialization.
static <A,B,C,D> Quadruple<A,B,C,D>	of(A a, B b, C c, D d) This factory allows a quadruple to be created using inference to obtain the generic types.
void	setFirst(A a) Sets the first element from this quadruple.
void	setFourth(D d) Sets the fourth element from this quadruple.
void	setSecond(B b) Sets the second element from this quadruple.
void	setThird(C c) Sets the third element from this quadruple.
String	toString() Returns a String representation of this quadruple using the format (first, second, third, fourth).
static <A,B,C,D> Quadruple<A,B,C,D>	unmodifiableOf(A a, B b, C c, D d) This factory allows an unmodifiable pair to be created using inference to obtain the generic types.

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Quadruple

public Quadruple(A a,
         B b,
         C c,
         D d,
         boolean isModifiable)

Default constructor.

Parameters:

a - The first element, may be null

b - The second element, may be null

c - The third element, may be null

d - The fourth element, may be null

isModifiable - Indicates whether or not the elements can be changed after initialization

Since:

0.3.0

Method Detail

equals

public boolean equals(Object o)

Indicates whether some other object is "equal to" this one.

Overrides:

equals in class Object

Parameters:

o - Reference object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise

Since:

0.2.0

getFirst

public A getFirst()

Returns the first element from this quadruple.

Returns:

The first element from this quadruple

Since:

0.2.0

getFourth

public D getFourth()

Returns the fourth element from this quadruple.

Returns:

The fourth element from this quadruple

Since:

0.2.0

getSecond

public B getSecond()

Returns the second element from this quadruple.

Returns:

The second element from this quadruple

Since:

0.2.0

getThird

public C getThird()

Returns the third element from this quadruple.

Returns:

The third element from this quadruple

Since:

0.2.0

hashCode

public int hashCode()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

Overrides:

hashCode in class Object

Returns:

Hash code value for this object

Since:

0.2.0

isModifiable

public boolean isModifiable()

Indicates whether or not elements from the pair can be changed after initialization.

Returns:

true if the element can be changed. Otherwise, false

Since:

0.3.0

of

public static <A,B,C,D> Quadruple<A,B,C,D> of(A a,
                              B b,
                              C c,
                              D d)

This factory allows a quadruple to be created using inference to obtain the generic types.

Type Parameters:

A - Class type for the first element

B - Class type for the second element

C - Class type for the third element

D - Class type for the fourth element

Parameters:

a - The first element, may be null

b - The second element, may be null

c - The third element, may be null

d - The fourth element, may be null

Returns:

A quadruple formed from four parameters

Since:

0.2.0

setFirst

public void setFirst(A a)

Sets the first element from this quadruple.

Parameters:

a - The first element, may be null

Since:

0.2.0

setFourth

public void setFourth(D d)

Sets the fourth element from this quadruple.

Parameters:

d - The fourth element, may be null

Since:

0.2.0

setSecond

public void setSecond(B b)

Sets the second element from this quadruple.

Parameters:

b - The second element, may be null

Since:

0.2.0

setThird

public void setThird(C c)

Sets the third element from this quadruple.

Parameters:

c - The third element, may be null

Since:

0.2.0

toString

public String toString()

Returns a String representation of this quadruple using the format (first, second, third, fourth).

Overrides:

toString in class Object

Returns:

A String representation of this quadruple

Since:

0.2.0

unmodifiableOf

public static <A,B,C,D> Quadruple<A,B,C,D> unmodifiableOf(A a,
                                          B b,
                                          C c,
                                          D d)

This factory allows an unmodifiable pair to be created using inference to obtain the generic types.

Type Parameters:

A - Class type for the first element

B - Class type for the second element

C - Class type for the third element

D - Class type for the fourth element

Parameters:

a - The first element, may be null

b - The second element, may be null

c - The third element, may be null

d - The fourth element, may be null

Returns:

An unmodifiable quadruple formed from two parameters

Since:

0.3.0