ResettableSingletonTraverser (Hazelcast Root 5.4.0-SNAPSHOT API)

java.lang.Object
- com.hazelcast.jet.core.ResettableSingletonTraverser<T>

Type Parameters:

T - item type

All Implemented Interfaces:

Traverser<T>, java.util.function.Consumer<T>
```
public class ResettableSingletonTraverser<T>
extends java.lang.Object
implements Traverser<T>, java.util.function.Consumer<T>
```
Traverses over a single item which can be set from the outside, by using this traverser as a Consumer<T>. Another item can be set at any time and the subsequent next() call will consume it. However, if this traverser already has an item, it is illegal to set another one before consuming it.
See AppendableTraverser if you have more items to traverse.

Since:

Jet 3.0

Constructor Summary

Constructors
Constructor Description

ResettableSingletonTraverser()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(T item)`	Resets this traverser so that the following `next()` call will return the item supplied here.
`T`	`next()`	Returns the next item, removing it from this traverser.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Consumer
andThen

Methods inherited from interface com.hazelcast.jet.Traverser
append, dropWhile, filter, flatMap, map, onFirstNull, peek, prepend, takeWhile

- Constructor Detail
  - ResettableSingletonTraverser
```
public ResettableSingletonTraverser()
```
- Method Detail
  - next
```
public T next()
```
    Description copied from interface: Traverser
    
    Returns the next item, removing it from this traverser. If no item is available, returns null. If this traverser is null-terminated, getting a null means it's exhausted and will keep returning null forever. Otherwise, trying again later may produce one.
    
    Specified by:
    
    next in interface Traverser<T>
  - accept
```
public void accept(@Nullable
                   T item)
```
    Resets this traverser so that the following next() call will return the item supplied here. If the traverser already has an item, it is illegal to call this method until that item is consumed by calling next().
    
    Specified by:
    
    accept in interface java.util.function.Consumer<T>
    
    Parameters:
    
    item - the item to return from next()