enumj

Class LazyEnumerator<E>

java.lang.Object

enumj.AbstractEnumerator<E>

enumj.LazyEnumerator<E>

Type Parameters:

E - type of enumerated elements.

All Implemented Interfaces:

Enumerator<E>, Iterator<E>

final class LazyEnumerator<E>
extends AbstractEnumerator<E>

Enumerator that retrieves its source of elements lazily.

See Also:

Enumerator, AbstractEnumerator

Method Summary

Modifier and Type	Method and Description
protected void	cleanup() Cleans up the internals of the current enumerator when enumeration ends.
protected boolean	internalHasNext() Returns whether the enumerator has more elements.
protected E	internalNext() Returns the next enumerated element.
static <E> LazyEnumerator<E>	of(Supplier<? extends Iterator<E>> source) Creates a LazyEnumerator instance that uses source to get its source of elements.

Methods inherited from class enumj.AbstractEnumerator

enumerating, hasNext, next

Methods inherited from class java.lang.Object

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

Methods inherited from interface enumj.Enumerator

allMatch, anyMatch, append, as, asEnumerable, asEnumeration, asFiltered, asOptional, asShareable, asSpliterator, asStream, asSupplier, asTolerant, asTolerant, choiceOf, choiceOf, collect, concat, concat, concat, concat, concat, concat, concatOn, contains, count, distinct, elementAt, elementsEqual, empty, filter, first, flatMap, forEach, iterate, last, limit, limitWhile, map, map, max, min, noneMatch, of, of, of, of, of, of, of, ofLateBinding, ofLazyEnumeration, ofLazyIterable, ofLazyIterator, ofLazySpliterator, ofLazyStream, on, peek, prepend, prepend, prepend, prepend, prepend, prepend, prependOn, range, rangeClosed, rangeInt, rangeIntClosed, rangeLong, rangeLongClosed, reduce, reduce, repeat, repeatAll, repeatAll, repeatEach, reverse, single, skip, skipWhile, sorted, sorted, take, takeWhile, toArray, toList, toMap, toSet, union, union, union, union, union, union, unionOn, zipAll, zipAny, zipBoth, zipLeft, zipRight

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Method Detail

internalHasNext

protected boolean internalHasNext()

Description copied from class: AbstractEnumerator

Returns whether the enumerator has more elements.

This method is the internal counterpart of AbstractEnumerator.hasNext().

Specified by:

internalHasNext in class AbstractEnumerator<E>

Returns:

true if the enumerator has more elements, false otherwise.

See Also:

AbstractEnumerator.next()

internalNext

protected E internalNext()

Description copied from class: AbstractEnumerator

Returns the next enumerated element.

This method is the internal counterpart of AbstractEnumerator.hasNext()

Specified by:

internalNext in class AbstractEnumerator<E>

Returns:

next enumerated element.

cleanup

protected void cleanup()

Description copied from class: AbstractEnumerator

Cleans up the internals of the current enumerator when enumeration ends.

By default this method does nothing.

Overrides:

cleanup in class AbstractEnumerator<E>

See Also:

AbstractEnumerator.hasNext(), AbstractEnumerator.next(), AbstractEnumerator.internalHasNext(), AbstractEnumerator.internalNext()

of

public static <E> LazyEnumerator<E> of(Supplier<? extends Iterator<E>> source)

Creates a LazyEnumerator instance that uses source to get its source of elements.

Type Parameters:

E - type of enumerated elements.

Parameters:

source - Supplier instance providing the source of elements lazily.

Returns:

LazyEnumerator instance.