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.

  • Constructor Details

    • Demon

      public Demon(long cPtr, boolean cMemoryOwn)

  • Method Details

    • getCPtr

      public static long getCPtr(Demon obj)

    • swigRelease

      public 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 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.