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## org.optaplanner.core.impl.heuristic.selector.common.iterator
Class UpcomingSelectionIterator<S>

    java.lang.Object
      org.optaplanner.core.impl.heuristic.selector.common.iterator.SelectionIterator<S>
          org.optaplanner.core.impl.heuristic.selector.common.iterator.UpcomingSelectionIterator<S>

Type Parameters:
  `S` -

All Implemented Interfaces:
  Iterator<S>

Direct Known Subclasses:
  AbstractOriginalChangeIterator, AbstractOriginalSwapIterator, AbstractRandomChangeIterator, AbstractRandomSwapIterator, CartesianProductMoveSelector.OriginalCartesianProductMoveIterator

    public abstract class UpcomingSelectionIterator<S>

extends SelectionIterator<S>

IMPORTANT: The constructor of any subclass of this abstract class, should never call any of its child `Selector`'s `Iterator.hasNext()` or `Iterator.next()` methods, because that can cause descendant `Selector`s to be selected too early (which breaks `MimicReplayingEntitySelector`).

Field Summary
`protected boolean` | `hasUpcomingSelection`
`protected boolean` | `upcomingCreated`
`protected S` | `upcomingSelection`

Constructor Summary
`UpcomingSelectionIterator()`

Method Summary
`protected abstract S` | `createUpcomingSelection()`
`boolean` | `hasNext()`
`S` | `next()`
`protected S` | `noUpcomingSelection()`
`String` | `toString()`

Methods inherited from class org.optaplanner.core.impl.heuristic.selector.common.iterator.SelectionIterator
`remove`

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

Field Detail

### upcomingCreated

    protected boolean upcomingCreated

### hasUpcomingSelection

    protected boolean hasUpcomingSelection

### upcomingSelection

    protected S upcomingSelection

Constructor Detail

### UpcomingSelectionIterator

    public UpcomingSelectionIterator()

Method Detail

### hasNext

    public boolean hasNext()

### next

    public S next()

### createUpcomingSelection

    protected abstract S createUpcomingSelection()

### noUpcomingSelection

    protected S noUpcomingSelection()

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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