org.ref_send.brand
Class Brand<T>

java.lang.Object
  org.ref_send.brand.Brand<T>

Type Parameters:

T - purpose of this brand

All Implemented Interfaces:

java.io.Serializable, Immutable, Powerless

public class Brand<T>
extends java.lang.Object
implements Powerless, java.io.Serializable

An opaque, globally unique identifier.

See Also:

Serialized Form

Method Summary

static <P> boolean	equal(P a, P b) Is one object equal to another?
static <T> Brand<T>	make() Constructs an instance.
static <T> void	require(Brand<T> expected, Brand<T> actual) Requires that one brand is the same as another.

Methods inherited from class java.lang.Object

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

Method Detail

make

public static <T> Brand<T> make()

Constructs an instance.

Type Parameters:

T - purpose of this brand

equal

public static <P> boolean equal(P a,
                                P b)

Is one object equal to another?

Type Parameters:

P - compared object type

Parameters:

a - object compared against

b - object compared to

Returns:

true if a claims b is equal, else false

require

public static <T> void require(Brand<T> expected,
                               Brand<T> actual)
                    throws WrongBrand

Requires that one brand is the same as another.

Type Parameters:

T - purpose of this brand

Parameters:

expected - brand compared against

actual - brand compared to

Throws:

WrongBrand - actual is not expected