org.kie.server.services.taskassigning.planning

Class SolverExecutor

java.lang.Object

org.kie.server.services.taskassigning.planning.RunnableBase

org.kie.server.services.taskassigning.planning.SolverExecutor

All Implemented Interfaces:

Runnable

public class SolverExecutor
extends RunnableBase

This class is intended to manage the solver life-cycle in a multi-threaded environment.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SolverExecutor.SolverExecutorException

Nested classes/interfaces inherited from class org.kie.server.services.taskassigning.planning.RunnableBase

RunnableBase.Status

Field Summary

Fields inherited from class org.kie.server.services.taskassigning.planning.RunnableBase

status

Constructor Summary

Constructors

Constructor and Description
SolverExecutor(SolverDef solverDef, KieServerRegistry registry, org.optaplanner.core.api.solver.event.SolverEventListener<TaskAssigningSolution> eventListener)

Method Summary

Modifier and Type	Method and Description
void	addProblemFactChanges(List<org.optaplanner.core.impl.solver.ProblemFactChange<TaskAssigningSolution>> changes) Thread-safe method that adds a list of ProblemFactChanges to the current solver.
protected org.optaplanner.core.api.solver.Solver<TaskAssigningSolution>	buildSolver(SolverDef solverDef, KieServerRegistry registry)
void	destroy() This method programmes the subsequent finalization of the solver (if it was started) that will be produced as soon as possible by invoking the solver.terminateEarly() method.
boolean	isStarted()
boolean	isStopped()
void	run()
void	start(TaskAssigningSolution solution) This method is invoked from a different thread for starting the solver and must be invoked only one time.
void	stop() Stops the solver.

Methods inherited from class org.kie.server.services.taskassigning.planning.RunnableBase

isAlive, isDestroyed

Methods inherited from class java.lang.Object

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

Constructor Detail

SolverExecutor

public SolverExecutor(SolverDef solverDef,
                      KieServerRegistry registry,
                      org.optaplanner.core.api.solver.event.SolverEventListener<TaskAssigningSolution> eventListener)

Method Detail

start

public void start(TaskAssigningSolution solution)

This method is invoked from a different thread for starting the solver and must be invoked only one time. If the solver was already started an exception is thrown so callers of this method should call the isStarted() method to verify. This method is not thread-safe so it's expected that any synchronization required between the isStarted(), start() and stop() methods is performed by the callers. However it's normally not expected that multiple threads might try to start the same solver runner instance.

Parameters:

solution - a valid solution for starting the solver with.

buildSolver

protected org.optaplanner.core.api.solver.Solver<TaskAssigningSolution> buildSolver(SolverDef solverDef,
                                                                                    KieServerRegistry registry)

isStarted

public boolean isStarted()

Returns:

true if the solver has been started, false in any other case.

isStopped

public boolean isStopped()

stop

public void stop()

Stops the solver.

destroy

public void destroy()

This method programmes the subsequent finalization of the solver (if it was started) that will be produced as soon as possible by invoking the solver.terminateEarly() method. If the solver wasn't started it just finalizes current thread.

Overrides:

destroy in class RunnableBase

addProblemFactChanges

public void addProblemFactChanges(List<org.optaplanner.core.impl.solver.ProblemFactChange<TaskAssigningSolution>> changes)

Thread-safe method that adds a list of ProblemFactChanges to the current solver. If the solver has not been started an exception is thrown, so it's expected that callers of this method should call isStarted() method to verify.

Parameters:

changes - a list of problem fact changes to program in current solver.

run

public void run()