com.natpryce.makeiteasy.sequence
Class ChainedSequence<T>

java.lang.Object
  com.natpryce.makeiteasy.sequence.ChainedSequence<T>

Type Parameters:

T - the type of the value

All Implemented Interfaces:

Donor<T>

public abstract class ChainedSequence<T>
extends Object
implements Donor<T>

A sequence of values, each of which is calculated from the previous value in the sequence.

Constructor Summary

ChainedSequence()

Method Summary

protected abstract T	firstValue() Returns the first value in the sequence.
T	value() Donate the value.
protected abstract T	valueAfter(T prevValue) Return the value after a given value.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainedSequence

public ChainedSequence()

Method Detail

value

public T value()

Description copied from interface: Donor

Donate the value.

Specified by:

value in interface Donor<T>

Returns:

the value donated

firstValue

protected abstract T firstValue()

Returns the first value in the sequence. The result must not be null.

Returns:

the first value.

valueAfter

protected abstract T valueAfter(T prevValue)

Return the value after a given value. The result must not be null.

Parameters:

prevValue - the previous value

Returns:

the value after prevValue in this sequence.