io.debezium.util

Class Iterators

java.lang.Object

io.debezium.util.Iterators

@Immutable
public class Iterators
extends Object

A utility for creating iterators.

Author:

Randall Hauch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Iterators.PreviewIterator<T> A read only iterator that is able to preview the next value without consuming it or altering the behavior or semantics of the normal Iterator methods.

Constructor Summary

Constructors

Constructor and Description
Iterators()

Method Summary

Modifier and Type	Method and Description
static <T,U,V> Iterator<V>	around(Iterable<? extends T> first, Iterable<? extends U> second, BiFunction<T,U,V> conversion)
static <V,T> Iterator<T>	around(Iterable<? extends V> iterable, Function<V,T> conversion)
static <T,U,V> Iterator<V>	around(Iterator<? extends T> first, Iterator<? extends U> second, BiFunction<T,U,V> combineFirstAndSecond)
static <V,T> Iterator<T>	around(Iterator<? extends V> iterator, Function<V,T> conversion)
static <T> Iterable<T>	around(Iterator<T> iterator)
static <T> Iterator<T>	empty()
static <T> Iterator<T>	join(Iterable<T> first, Iterable<T> second)
static <T> Iterator<T>	join(Iterable<T> first, T last)
static <T> Iterator<T>	join(Iterable<T> first, T last1, T last2)
static <T> Iterator<T>	join(Iterable<T> first, T last1, T last2, T last3)
static <T> Iterator<T>	join(Iterable<T> first, T last1, T last2, T last3, T last4)
static <T> Iterator<T>	join(Iterator<T> first, Iterator<T> second)
static <T> Iterators.PreviewIterator<T>	preview(Iterator<T> iter) Get a read-only iterator that can peek at the next value before it is retrieved with Iterator.next().
static <T> Iterator<T>	readOnly(Iterable<T> iterable)
static <V,T> Iterator<T>	readOnly(Iterable<V> iterable, Function<V,T> conversion)
static <V,T> Iterator<T>	readOnly(Iterator<? extends V> iterator, Function<V,T> conversion)
static <T> Iterator<T>	readOnly(Iterator<T> iterator)
static <V,T> Iterable<T>	readOnlyIterable(Iterable<? extends V> iterable, Function<V,T> conversion)
static <T> Iterable<T>	readOnlyIterable(Iterable<T> iterable)
static <T> Iterator<T>	with(T value)
static <T> Iterator<T>	with(T[] values)
static <T> Iterator<T>	with(T value1, T value2)
static <T> Iterator<T>	with(T value1, T value2, T value3)
static <T> Iterator<T>	with(T value1, T value2, T value3, T... additional)

Methods inherited from class java.lang.Object

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

Constructor Detail

Iterators

public Iterators()

Method Detail

empty

public static <T> Iterator<T> empty()

with

public static <T> Iterator<T> with(T value)

with

public static <T> Iterator<T> with(T value1,
                                   T value2)

with

public static <T> Iterator<T> with(T value1,
                                   T value2,
                                   T value3)

with

@SafeVarargs
public static <T> Iterator<T> with(T value1,
                                                T value2,
                                                T value3,
                                                T... additional)

with

public static <T> Iterator<T> with(T[] values)

around

public static <T,U,V> Iterator<V> around(Iterable<? extends T> first,
                                         Iterable<? extends U> second,
                                         BiFunction<T,U,V> conversion)

around

public static <T,U,V> Iterator<V> around(Iterator<? extends T> first,
                                         Iterator<? extends U> second,
                                         BiFunction<T,U,V> combineFirstAndSecond)

around

public static <V,T> Iterator<T> around(Iterable<? extends V> iterable,
                                       Function<V,T> conversion)

around

public static <V,T> Iterator<T> around(Iterator<? extends V> iterator,
                                       Function<V,T> conversion)

around

public static <T> Iterable<T> around(Iterator<T> iterator)

readOnly

public static <T> Iterator<T> readOnly(Iterator<T> iterator)

readOnly

public static <V,T> Iterator<T> readOnly(Iterator<? extends V> iterator,
                                         Function<V,T> conversion)

readOnly

public static <T> Iterator<T> readOnly(Iterable<T> iterable)

readOnly

public static <V,T> Iterator<T> readOnly(Iterable<V> iterable,
                                         Function<V,T> conversion)

readOnlyIterable

public static <T> Iterable<T> readOnlyIterable(Iterable<T> iterable)

readOnlyIterable

public static <V,T> Iterable<T> readOnlyIterable(Iterable<? extends V> iterable,
                                                 Function<V,T> conversion)

join

public static <T> Iterator<T> join(Iterable<T> first,
                                   T last)

join

public static <T> Iterator<T> join(Iterable<T> first,
                                   T last1,
                                   T last2)

join

public static <T> Iterator<T> join(Iterable<T> first,
                                   T last1,
                                   T last2,
                                   T last3)

join

public static <T> Iterator<T> join(Iterable<T> first,
                                   T last1,
                                   T last2,
                                   T last3,
                                   T last4)

join

public static <T> Iterator<T> join(Iterable<T> first,
                                   Iterable<T> second)

join

public static <T> Iterator<T> join(Iterator<T> first,
                                   Iterator<T> second)

preview

public static <T> Iterators.PreviewIterator<T> preview(Iterator<T> iter)

Get a read-only iterator that can peek at the next value before it is retrieved with Iterator.next().

Parameters:

iter - the original iterator

Returns:

the peeking iterator; may be null if iter is null