org.chocosolver.memory.trailing.trail.chunck

Class StoredDoubleChunckTrail

java.lang.Object

org.chocosolver.memory.trailing.trail.chunck.StoredDoubleChunckTrail

All Implemented Interfaces:

Serializable, IStorage, IStoredDoubleTrail, ITrailStorage

public class StoredDoubleChunckTrail
extends Object
implements IStoredDoubleTrail

Implementing storage of historical values for backtrackable integers.

See Also:

IStorage, Serialized Form

Constructor Summary

Constructors

Constructor and Description
StoredDoubleChunckTrail(int nWorlds) Constructs a trail with predefined size.

Method Summary

Methods

Modifier and Type	Method and Description
void	buildFakeHistory(StoredDouble v, double initValue, int olderStamp)
int	getSize() Returns the current size of the stack.
void	resizeWorldCapacity(int newWorldCapacity) increase the capacity of the environment to a given number of worlds
void	savePreviousState(StoredDouble v, double oldValue, int oldStamp) Reacts when a StoredInt is modified: push the former value & timestamp on the stacks.
void	worldCommit(int worldIndex) Comits a world: merging it with the previous one.
void	worldPop(int worldIndex) Moving down to the previous world.
void	worldPush(int worldIndex) Moving up to the next world.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StoredDoubleChunckTrail

public StoredDoubleChunckTrail(int nWorlds)

Constructs a trail with predefined size.

Parameters:

nWorlds - maximal number of worlds that will be stored

Method Detail

worldPush

public void worldPush(int worldIndex)

Moving up to the next world.

Specified by:

worldPush in interface IStorage

Parameters:

worldIndex - current world index

worldPop

public void worldPop(int worldIndex)

Moving down to the previous world.

Specified by:

worldPop in interface IStorage

Parameters:

worldIndex - current world index

getSize

public int getSize()

Returns the current size of the stack.

worldCommit

public void worldCommit(int worldIndex)

Comits a world: merging it with the previous one.

Specified by:

worldCommit in interface IStorage

savePreviousState

public void savePreviousState(StoredDouble v,
                     double oldValue,
                     int oldStamp)

Reacts when a StoredInt is modified: push the former value & timestamp on the stacks.

Specified by:

savePreviousState in interface IStoredDoubleTrail

buildFakeHistory

public void buildFakeHistory(StoredDouble v,
                    double initValue,
                    int olderStamp)

Specified by:

buildFakeHistory in interface IStoredDoubleTrail

resizeWorldCapacity

public void resizeWorldCapacity(int newWorldCapacity)

Description copied from interface: ITrailStorage

increase the capacity of the environment to a given number of worlds

Specified by:

resizeWorldCapacity in interface ITrailStorage

Parameters:

newWorldCapacity - estimation of the required capacity