CountableValueRange (OptaPlanner Javadoc 8.12.0.Final API)

All Superinterfaces:

ValueRange<T>

All Known Implementing Classes:

AbstractCountableValueRange, BigDecimalValueRange, BigIntegerValueRange, BooleanValueRange, CompositeCountableValueRange, EmptyValueRange, IntValueRange, ListValueRange, LongValueRange, NullableCountableValueRange, TemporalValueRange
```
public interface CountableValueRange<T>
extends ValueRange<T>
```
A ValueRange that is ending. Therefore, it has a discrete (as in non-continuous) range.
An implementation must extend AbstractCountableValueRange to ensure backwards compatibility in future versions.

See Also:

ValueRangeFactory, ValueRange, AbstractCountableValueRange

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Iterator<T>`	`createOriginalIterator()`	Select the elements in original (natural) order.
`T`	`get(long index)`	Used by uniform random selection in a composite or nullable CountableValueRange.
`long`	`getSize()`	Used by uniform random selection in a composite or nullable CountableValueRange.

Methods inherited from interface org.optaplanner.core.api.domain.valuerange.ValueRange
contains, createRandomIterator, isEmpty

- Method Detail
  - getSize
```
long getSize()
```
    Used by uniform random selection in a composite or nullable CountableValueRange.
    
    Returns:
    
    the exact number of elements generated by this CountableValueRange, always >= 0
  - get
```
T get(long index)
```
    Used by uniform random selection in a composite or nullable CountableValueRange.
    
    Parameters:
    
    index - always < getSize()
    
    Returns:
    
    sometimes null (if PlanningVariable.nullable() is true)
  - createOriginalIterator
```
Iterator<T> createOriginalIterator()
```
    Select the elements in original (natural) order.
    
    Returns:
    
    never null