org.optaplanner.core.impl.heuristic.selector.move.generic.chained
Class TailChainSwapMoveSelector
java.lang.Object
org.optaplanner.core.impl.heuristic.selector.AbstractSelector
org.optaplanner.core.impl.heuristic.selector.move.AbstractMoveSelector
org.optaplanner.core.impl.heuristic.selector.move.generic.GenericMoveSelector
org.optaplanner.core.impl.heuristic.selector.move.generic.chained.TailChainSwapMoveSelector
- All Implemented Interfaces:
- Iterable<Move>, EventListener, IterableSelector<Move>, MoveSelector, Selector, PhaseLifecycleListener, SolverLifecycleListener
public class TailChainSwapMoveSelector
- extends GenericMoveSelector
Also known as a 2-opt move selector.
entitySelector
protected final EntitySelector entitySelector
valueSelector
protected final ValueSelector valueSelector
randomSelection
protected final boolean randomSelection
inverseVariableSupply
protected SingletonInverseVariableSupply inverseVariableSupply
anchorVariableSupply
protected AnchorVariableSupply anchorVariableSupply
TailChainSwapMoveSelector
public TailChainSwapMoveSelector(EntitySelector entitySelector,
ValueSelector valueSelector,
boolean randomSelection)
solvingStarted
public void solvingStarted(DefaultSolverScope solverScope)
- Specified by:
solvingStarted
in interface SolverLifecycleListener
- Overrides:
solvingStarted
in class AbstractSelector
solvingEnded
public void solvingEnded(DefaultSolverScope solverScope)
- Specified by:
solvingEnded
in interface SolverLifecycleListener
- Overrides:
solvingEnded
in class AbstractSelector
isCountable
public boolean isCountable()
- Description copied from interface:
Selector
- If false, then
Selector.isNeverEnding()
is true.
- Returns:
- true if all the
ValueRange
s are countable
(for example a double value range between 1.2 and 1.4 is not countable)
isNeverEnding
public boolean isNeverEnding()
- Description copied from interface:
Selector
- Is true if
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).
- Returns:
- true if the
Iterator.hasNext()
of the Iterator
created by Iterable.iterator()
never returns false (except when it's empty).
getSize
public long getSize()
- Description copied from interface:
IterableSelector
- A random JIT
Selector
with Selector.isNeverEnding()
true should return a size
as if it would be able to return each distinct element only once,
because the size can be used in SelectionProbabilityWeightFactory
.
- Returns:
- the approximate number of elements generated by this
Selector
, always >= 0
iterator
public Iterator<Move> iterator()
toString
public String toString()
- Overrides:
toString
in class Object
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