operations_research::SwapActiveOperator< ignore_path_vars > Class Template Reference

--— SwapActiveOperator --— More...

Detailed Description

template<bool ignore_path_vars>
class operations_research::SwapActiveOperator< ignore_path_vars >

--— SwapActiveOperator --—

Definition at line 1136 of file local_search.cc.

Inheritance diagram for operations_research::SwapActiveOperator< ignore_path_vars >:

Public Member Functions
	SwapActiveOperator (const std::vector< IntVar * > &vars, const std::vector< IntVar * > &secondary_vars, std::function< int(int64_t)> start_empty_path_class)
	~SwapActiveOperator () override=default
bool	MakeNeighbor () override
std::string	DebugString () const override
Public Member Functions inherited from operations_research::BaseInactiveNodeToPathOperator< ignore_path_vars >
	BaseInactiveNodeToPathOperator (const std::vector< IntVar * > &vars, const std::vector< IntVar * > &secondary_vars, int number_of_base_nodes, std::function< int(int64_t)> start_empty_path_class, NeighborAccessor get_incoming_neighbors=nullptr, NeighborAccessor get_outgoing_neighbors=nullptr)
	~BaseInactiveNodeToPathOperator () override=default
Public Member Functions inherited from operations_research::PathOperator< ignore_path_vars >
	PathOperator (const std::vector< IntVar * > &next_vars, const std::vector< IntVar * > &path_vars, IterationParameters iteration_parameters)
	Builds an instance of PathOperator from next and path variables.
	PathOperator (const std::vector< IntVar * > &next_vars, const std::vector< IntVar * > &path_vars, int number_of_base_nodes, bool skip_locally_optimal_paths, bool accept_path_end_base, std::function< int(int64_t)> start_empty_path_class, std::function< const std::vector< int > &(int, int)> get_incoming_neighbors, std::function< const std::vector< int > &(int, int)> get_outgoing_neighbors)
	~PathOperator () override
void	EnterSearch () override
void	Reset () override
bool	SkipUnchanged (int index) const override
int64_t	Next (int64_t node) const
	Returns the node after node in the current delta.
int64_t	Prev (int64_t node) const
	Returns the node before node in the current delta.
int64_t	Path (int64_t node) const
int	number_of_nexts () const
	Number of next variables.
Public Member Functions inherited from operations_research::IntVarLocalSearchOperator
	IntVarLocalSearchOperator (const std::vector< IntVar * > &vars, bool keep_inverse_values=false)
	~IntVarLocalSearchOperator () override
bool	HoldsDelta () const override
void	Start (const Assignment *assignment) override
virtual bool	IsIncremental () const
int	Size () const
int64_t	Value (int64_t index) const
IntVar *	Var (int64_t index) const
	Returns the variable of given index.
int64_t	OldValue (int64_t index) const
int64_t	PrevValue (int64_t index) const
void	SetValue (int64_t index, int64_t value)
bool	Activated (int64_t index) const
void	Activate (int64_t index)
void	Deactivate (int64_t index)
bool	ApplyChanges (Assignment *delta, Assignment *deltadelta) const
void	RevertChanges (bool change_was_incremental)
void	AddVars (const std::vector< IntVar * > &vars)
bool	MakeNextNeighbor (Assignment *delta, Assignment *deltadelta) override
	--— Base operator class for operators manipulating IntVars --—
Public Member Functions inherited from operations_research::LocalSearchOperator
	LocalSearchOperator ()
	~LocalSearchOperator () override
virtual const LocalSearchOperator *	Self () const
virtual bool	HasFragments () const
Public Member Functions inherited from operations_research::BaseObject
	BaseObject ()
	BaseObject (const BaseObject &)=delete
	This type is neither copyable nor movable.
BaseObject &	operator= (const BaseObject &)=delete
virtual	~BaseObject ()=default

Additional Inherited Members
Protected Member Functions inherited from operations_research::BaseInactiveNodeToPathOperator< ignore_path_vars >
bool	MakeOneNeighbor () override
int64_t	GetInactiveNode () const
Protected Member Functions inherited from operations_research::PathOperator< ignore_path_vars >
bool	MakeOneNeighbor () override
	This method should not be overridden. Override MakeNeighbor() instead.
virtual void	ResetIncrementalism ()
int64_t	BaseNode (int i) const
	Returns the ith base node of the operator.
int64_t	BaseAlternativeNode (int i) const
	Returns the alternative node for the ith base node.
int64_t	BaseSiblingAlternativeNode (int i) const
	Returns the alternative node for the sibling of the ith base node.
int64_t	StartNode (int i) const
	Returns the start node of the ith base node.
int64_t	EndNode (int i) const
	Returns the end node of the ith base node.
const std::vector< int64_t > &	path_starts () const
	Returns the vector of path start nodes.
int	PathClass (int i) const
	Returns the class of the path of the ith base node.
int	PathClassFromStartNode (int64_t start_node) const
virtual bool	RestartAtPathStartOnSynchronize ()
virtual bool	OnSamePathAsPreviousBase (int64_t)
virtual int64_t	GetBaseNodeRestartPosition (int base_index)
virtual void	SetNextBaseToIncrement (int64_t base_index)
virtual bool	ConsiderAlternatives (int64_t) const
int64_t	OldNext (int64_t node) const
int64_t	PrevNext (int64_t node) const
int64_t	OldPrev (int64_t node) const
int64_t	OldPath (int64_t node) const
int	CurrentNodePathStart (int64_t node) const
int	CurrentNodePathEnd (int64_t node) const
bool	MoveChain (int64_t before_chain, int64_t chain_end, int64_t destination)
bool	ReverseChain (int64_t before_chain, int64_t after_chain, int64_t *chain_last)
bool	SwapNodes (int64_t node1, int64_t node2)
	Swaps the nodes node1 and node2.
bool	MakeActive (int64_t node, int64_t destination)
	Insert the inactive node after destination.
bool	MakeChainInactive (int64_t before_chain, int64_t chain_end)
bool	SwapActiveAndInactive (int64_t active, int64_t inactive)
	Replaces active by inactive in the current path, making active inactive.
bool	SwapActiveAndInactiveChains (absl::Span< const int64_t > active_chain, absl::Span< const int64_t > inactive_chain)
void	SetNext (int64_t from, int64_t to, int64_t path)
	Sets 'to' to be the node after 'from' on the given path.
bool	IsPathEnd (int64_t node) const
bool	IsPathStart (int64_t node) const
	Returns true if node is the first node on the path.
bool	IsInactive (int64_t node) const
	Returns true if node is inactive.
virtual bool	InitPosition () const
void	ResetPosition ()
int	AddAlternativeSet (const std::vector< int64_t > &alternative_set)
template<typename PairType>
void	AddPairAlternativeSets (const std::vector< PairType > &pair_alternative_sets)
int64_t	GetActiveInAlternativeSet (int alternative_index) const
	Returns the active node in the given alternative set.
int64_t	GetActiveAlternativeNode (int node) const
	Returns the active node in the alternative set of the given node.
int	GetSiblingAlternativeIndex (int node) const
	Returns the index of the alternative set of the sibling of node.
int	GetAlternativeIndex (int node) const
	Returns the index of the alternative set of the node.
int64_t	GetActiveAlternativeSibling (int node) const
bool	CheckChainValidity (int64_t before_chain, int64_t chain_end, int64_t exclude) const
bool	HasNeighbors () const
Neighbor	GetNeighborForBaseNode (int64_t base_index) const
Protected Member Functions inherited from operations_research::IntVarLocalSearchOperator
int64_t	InverseValue (int64_t index) const
int64_t	OldInverseValue (int64_t index) const
void	AddToAssignment (IntVar *var, int64_t value, bool active, std::vector< int > *assignment_indices, int64_t index, Assignment *assignment) const
Protected Attributes inherited from operations_research::PathOperator< ignore_path_vars >
const int	number_of_nexts_

Constructor & Destructor Documentation

SwapActiveOperator()

template<bool ignore_path_vars>

operations_research::SwapActiveOperator< ignore_path_vars >::SwapActiveOperator ( const std::vector< IntVar * > & vars, const std::vector< IntVar * > & secondary_vars, std::function< int(int64_t)> start_empty_path_class )

inline

Definition at line 1139 of file local_search.cc.

~SwapActiveOperator()

template<bool ignore_path_vars>

operations_research::SwapActiveOperator< ignore_path_vars >::~SwapActiveOperator ( )

overridedefault

Member Function Documentation

DebugString()

template<bool ignore_path_vars>

std::string operations_research::SwapActiveOperator< ignore_path_vars >::DebugString ( ) const

inlineoverridevirtual

Reimplemented from operations_research::BaseObject.

Definition at line 1151 of file local_search.cc.

MakeNeighbor()

template<bool ignore_path_vars>

bool operations_research::SwapActiveOperator< ignore_path_vars >::MakeNeighbor ( )

inlineoverridevirtual

Implements operations_research::PathOperator< ignore_path_vars >.

Definition at line 1145 of file local_search.cc.

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The documentation for this class was generated from the following file:

• ortools/constraint_solver/local_search.cc