org.drools.planner.core.solver
Class BasicPlumbingTermination
java.lang.Object
org.drools.planner.core.termination.AbstractTermination
org.drools.planner.core.solver.BasicPlumbingTermination
- All Implemented Interfaces:
- EventListener, SolverPhaseLifecycleListener, SolverLifecycleListener, Termination
public class BasicPlumbingTermination
- extends AbstractTermination
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
terminatedEarly
protected AtomicBoolean terminatedEarly
problemFactChangeQueue
protected BlockingQueue<ProblemFactChange> problemFactChangeQueue
BasicPlumbingTermination
public BasicPlumbingTermination()
resetTerminateEarly
public void resetTerminateEarly()
terminateEarly
public boolean terminateEarly()
isTerminateEarly
public boolean isTerminateEarly()
addProblemFactChange
public boolean addProblemFactChange(ProblemFactChange problemFactChange)
getProblemFactChangeQueue
public BlockingQueue<ProblemFactChange> getProblemFactChangeQueue()
isSolverTerminated
public boolean isSolverTerminated(DefaultSolverScope solverScope)
- Description copied from interface:
Termination
- Called by the
Solver
after every phase to determine if the search should stop.
- Parameters:
solverScope
- never null
- Returns:
- true if the search should terminate.
isPhaseTerminated
public boolean isPhaseTerminated(AbstractSolverPhaseScope solverPhaseScope)
- Description copied from interface:
Termination
- Called by the
SolverPhase
after every step to determine if the search should stop.
- Parameters:
solverPhaseScope
- never null
- Returns:
- true if the search should terminate.
calculateSolverTimeGradient
public double calculateSolverTimeGradient(DefaultSolverScope solverScope)
- Description copied from interface:
Termination
- A timeGradient is a relative estimate of how long the search will continue.
Clients that use a timeGradient should cache it at the start of a single step
because some implementations are not time-stable.
If a timeGradient can not be calculated, it should return -1.0.
Several implementations (such a
SimulatedAnnealingAcceptor
) require a correctly implemented timeGradient.
A Termination's timeGradient can be requested after they are terminated, so implementations
should be careful not to return a timeGradient above 1.0.
- Parameters:
solverScope
- never null
- Returns:
- timeGradient t for which 0.0 <= t <= 1.0 or -1.0 when it is not supported.
At the start of a solver t is 0.0 and at the end t would be 1.0.
calculatePhaseTimeGradient
public double calculatePhaseTimeGradient(AbstractSolverPhaseScope solverPhaseScope)
- Description copied from interface:
Termination
- See
Termination.calculateSolverTimeGradient(DefaultSolverScope)
.
- Parameters:
solverPhaseScope
- never null
- Returns:
- timeGradient t for which 0.0 <= t <= 1.0 or -1.0 when it is not supported.
At the start of a phase t is 0.0 and at the end t would be 1.0.
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