com.neeve.rog
Interface IRogTraverser<T extends IRogCollectionNodeElement>

All Known Subinterfaces:

IRogList<T>, IRogQueue<T>

public interface IRogTraverser<T extends IRogCollectionNodeElement>

A traverser over an ordered collection.

Threading:

Lists are not safe for concurrent access by multiple threads.

Method Summary

T	first() Get the first element in a collection.
T	last() Get the last element in a collection.
T	next(T e) Get the element after another element in a collection.
T	previous(T e) Get the element before another element in a collection.

Method Detail

first

T first()

Get the first element in a collection.

Returns:

The first element in the collection.

Threading:

This method is not safe for concurrent access by multiple threads

next

T next(T e)

Get the element after another element in a collection.

Parameters:

e - The element whose succeeding element is to be returned.

Returns:

The element immediately following the specified element in the collection. A value of null is returned if the specified element is the last element in the collection.

Threading:

This method is not safe for concurrent access by multiple threads

previous

T previous(T e)

Get the element before another element in a collection.

Parameters:

e - The element whose preceding element is to be returned.

Returns:

The element immediately preceding the specified element in the collection. A value of null is returned if the specified element is the first element in the collection.

Threading:

This method is not safe for concurrent access by multiple threads

last

T last()

Get the last element in a collection.

Returns:

The last element in the collection.

Threading:

This method is not safe for concurrent access by multiple threads