com.google.ortools.constraintsolver

Class Demon

java.lang.Object

com.google.ortools.constraintsolver.BaseObject

com.google.ortools.constraintsolver.Demon

public class Demon
extends BaseObject

A Demon is the base element of a propagation queue. It is the main
object responsible for implementing the actual propagation
of the constraint and pruning the inconsistent values in the domains
of the variables. The main concept is that demons are listeners that are
attached to the variables and listen to their modifications.
There are two methods:
- Run() is the actual method called when the demon is processed.
- priority() returns its priority. Standard priorities are slow, normal
or fast. "immediate" is reserved for variables and is treated separately.

Field Summary

Fields inherited from class com.google.ortools.constraintsolver.BaseObject

swigCMemOwn

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Demon(long cPtr, boolean cMemoryOwn)

Method Summary

Modifier and Type	Method and Description
void	delete()
void	desinhibit(Solver s) This method un-inhibits the demon that was previously inhibited.
protected void	finalize()
protected static long	getCPtr(Demon obj)
void	inhibit(Solver s) This method inhibits the demon in the search tree below the current position.
int	priority() This method returns the priority of the demon.
void	run(Solver s) This is the main callback of the demon.
protected static long	swigRelease(Demon obj)
java.lang.String	toString()

Methods inherited from class com.google.ortools.constraintsolver.BaseObject

getCPtr, swigRelease

Methods inherited from class java.lang.Object

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

Constructor Detail

Demon

protected Demon(long cPtr,
                boolean cMemoryOwn)

Method Detail

getCPtr

protected static long getCPtr(Demon obj)

swigRelease

protected static long swigRelease(Demon obj)

finalize

protected void finalize()

Overrides:

finalize in class BaseObject

delete

public void delete()

Overrides:

delete in class BaseObject

run

public void run(Solver s)

This is the main callback of the demon.

priority

public int priority()

This method returns the priority of the demon. Usually a demon is
fast, slow or normal. Immediate demons are reserved for internal
use to maintain variables.

toString

public java.lang.String toString()

Overrides:

toString in class BaseObject

inhibit

public void inhibit(Solver s)

This method inhibits the demon in the search tree below the
current position.

desinhibit

public void desinhibit(Solver s)

This method un-inhibits the demon that was previously inhibited.