Package com.google.ortools.constraintsolver

Class LocalSearchOperator

  • Direct Known Subclasses:
    IntVarLocalSearchOperator
    public class LocalSearchOperator
extends BaseObject
    The base class for all local search operators.

    A local search operator is an object that defines the neighborhood of a
    solution. In other words, a neighborhood is the set of solutions which can
    be reached from a given solution using an operator.

    The behavior of the LocalSearchOperator class is similar to iterators.
    The operator is synchronized with an assignment (gives the
    current values of the variables); this is done in the Start() method.

    Then one can iterate over the neighbors using the MakeNextNeighbor method.
    This method returns an assignment which represents the incremental changes
    to the current solution. It also returns a second assignment representing
    the changes to the last solution defined by the neighborhood operator; this
    assignment is empty if the neighborhood operator cannot track this
    information.

    • Constructor Detail

      • LocalSearchOperator

        protected LocalSearchOperator​(long cPtr,
                              boolean cMemoryOwn)

      • LocalSearchOperator

        public LocalSearchOperator()

    • Method Detail

      • swigDirectorDisconnect

        protected void swigDirectorDisconnect()

      • swigReleaseOwnership

        public void swigReleaseOwnership()

      • swigTakeOwnership

        public void swigTakeOwnership()

      • start

        public void start​(Assignment assignment)

      • reset

        public void reset()

      • HasFragments

        public boolean HasFragments()

      • HoldsDelta

        public boolean HoldsDelta()