org.datavec.api.berkeley

Class Iterators

java.lang.Object

org.datavec.api.berkeley.Iterators

public class Iterators
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Iterators.FilteredIterator<T> Creates an iterator that only returns items of a base iterator that pass a filter.
static class	Iterators.IteratorIterator<T> Wraps a two-level iteration scenario in an iterator.
static class	Iterators.Transform<S,T> Wraps a base iterator with a transformation function.
static class	Iterators.TransformingIterator<I,O>

Method Summary

Modifier and Type	Method and Description
static <T> java.lang.Iterable<T>	able(java.util.Iterator<T> it) Wraps an iterator as an iterable
static <T> java.util.Iterator<T>	concat(java.lang.Iterable<java.util.Iterator<? extends T>> args)
static <T> java.lang.Iterable<T>	concat(java.lang.Iterable<T> a, java.lang.Iterable<T> b)
static <T> java.util.Iterator<T>	concat(java.util.Iterator<? extends T>... args)
static java.util.Iterator	emptyIterator()
static <T> java.util.List<T>	fillList(java.util.Iterator<? extends T> it)
static <T> void	fillList(java.util.Iterator<? extends T> it, java.util.List<T> lst)
static <T> java.util.Iterator<T>	filter(java.util.Iterator<T> iterator, Filter<T> filter)
static <T> java.util.Iterator<T>	maxLengthIterator(java.util.Iterator<T> base, int max) Provides a max number of elements for an underlying base iterator.
static <T> java.lang.Iterable<T>	newIterable(java.util.Iterator<T> it) Wraps an iterator as an iterable
static <T> java.util.List<T>	nextList(java.util.List<java.util.Iterator<T>> iterators)
static java.util.Iterator<java.lang.Object>	objectIterator(java.io.ObjectInputStream instream)
static <U> java.util.Iterator<U>	oneItemIterator(U item)
static <T> java.util.Iterator<T>	thread(java.util.Iterator<T> base) Executes calls to next() in a different thread
static <S,T> java.util.Iterator<Pair<S,T>>	zip(java.util.Iterator<S> s, java.util.Iterator<T> t)

Methods inherited from class java.lang.Object

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

Method Detail

fillList

public static <T> void fillList(java.util.Iterator<? extends T> it,
                                java.util.List<T> lst)

fillList

public static <T> java.util.List<T> fillList(java.util.Iterator<? extends T> it)

newIterable

public static <T> java.lang.Iterable<T> newIterable(java.util.Iterator<T> it)

Wraps an iterator as an iterable

Type Parameters:

T -

Parameters:

it -

Returns:

able

public static <T> java.lang.Iterable<T> able(java.util.Iterator<T> it)

Wraps an iterator as an iterable

Type Parameters:

T -

Parameters:

it -

Returns:

thread

public static <T> java.util.Iterator<T> thread(java.util.Iterator<T> base)

Executes calls to next() in a different thread

Type Parameters:

T -

Parameters:

base -

Returns:

zip

public static <S,T> java.util.Iterator<Pair<S,T>> zip(java.util.Iterator<S> s,
                                                      java.util.Iterator<T> t)

maxLengthIterator

public static <T> java.util.Iterator<T> maxLengthIterator(java.util.Iterator<T> base,
                                                          int max)

Provides a max number of elements for an underlying base iterator.

filter

public static <T> java.util.Iterator<T> filter(java.util.Iterator<T> iterator,
                                               Filter<T> filter)

concat

public static <T> java.util.Iterator<T> concat(java.lang.Iterable<java.util.Iterator<? extends T>> args)

concat

public static <T> java.util.Iterator<T> concat(java.util.Iterator<? extends T>... args)

oneItemIterator

public static <U> java.util.Iterator<U> oneItemIterator(U item)

emptyIterator

public static java.util.Iterator emptyIterator()

concat

public static <T> java.lang.Iterable<T> concat(java.lang.Iterable<T> a,
                                               java.lang.Iterable<T> b)

nextList

public static <T> java.util.List<T> nextList(java.util.List<java.util.Iterator<T>> iterators)

objectIterator

public static java.util.Iterator<java.lang.Object> objectIterator(java.io.ObjectInputStream instream)