public class DowncastingValueSelector extends AbstractValueSelector
Modifier and Type | Field and Description |
---|---|
protected ValueSelector |
childValueSelector |
protected Class<?> |
downcastEntityClass |
logger, phaseLifecycleSupport, workingRandom
Constructor and Description |
---|
DowncastingValueSelector(ValueSelector childValueSelector,
Class<?> downcastEntityClass) |
Modifier and Type | Method and Description |
---|---|
Iterator<Object> |
endingIterator(Object entity)
If
Selector.isNeverEnding() is true, then ValueSelector.iterator(Object) will never end. |
ValueSelector |
getChildValueSelector() |
long |
getSize(Object entity)
Similar to
IterableSelector.getSize() , but requires an entity. |
GenuineVariableDescriptor |
getVariableDescriptor() |
boolean |
isCountable()
If false, then
Selector.isNeverEnding() is true. |
boolean |
isNeverEnding()
Is true if
Selector.isCountable() is false
or if this selector is in random order (for most cases). |
Iterator<Object> |
iterator(Object entity)
Similar to
Iterable.iterator() , but requires an entity. |
String |
toString() |
getCacheType, phaseEnded, phaseStarted, solvingEnded, solvingStarted, stepEnded, stepStarted
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
getCacheType
phaseEnded, phaseStarted, stepEnded, stepStarted
solvingEnded, solvingStarted
protected final ValueSelector childValueSelector
protected final Class<?> downcastEntityClass
public DowncastingValueSelector(ValueSelector childValueSelector, Class<?> downcastEntityClass)
public ValueSelector getChildValueSelector()
public GenuineVariableDescriptor getVariableDescriptor()
public boolean isCountable()
Selector
Selector.isNeverEnding()
is true.ValueRange
s are countable
(for example a double value range between 1.2 and 1.4 is not countable)public boolean isNeverEnding()
Selector
Selector.isCountable()
is false
or if this selector is in random order (for most cases).
Is never true when this selector is in shuffled order (which is less scalable but more exact).Iterator.hasNext()
of the Iterator
created by Iterable.iterator()
never returns false (except when it's empty).public long getSize(Object entity)
ValueSelector
IterableSelector.getSize()
, but requires an entity.entity
- never nullSelector
, always >= 0
public Iterator<Object> iterator(Object entity)
ValueSelector
Iterable.iterator()
, but requires an entity.entity
- never nullpublic Iterator<Object> endingIterator(Object entity)
ValueSelector
Selector.isNeverEnding()
is true, then ValueSelector.iterator(Object)
will never end.
This returns an ending Iterator
, that tries to match ValueSelector.iterator(Object)
as much as possible,
but return each distinct element only once
and therefore it might not respect the configuration of this ValueSelector
entirely.entity
- never nullValueSelector.iterator(Object)
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