EAExecutionContexts.java

package net.bmahe.genetics4j.core.spec;

import java.util.Objects;

import net.bmahe.genetics4j.core.selection.RouletteWheelSelectionPolicyHandler;

import net.bmahe.genetics4j.core.spec.ImmutableEAExecutionContext.Builder;

/**

 * Defines multiple factory and helper methods to create and manage EAExecutionContexts

 */

public class EAExecutionContexts {

	private EAExecutionContexts() {

	}

	public static <T extends Comparable<T>> Builder<T> standard() {

		return ImmutableEAExecutionContext.<T>builder();

	}

	/**

	 * Enrich an EAExecutionContext builder based on the knowledge of the fitness function returning a scalar value.

	 * <p>This will enrich it with additional implementations for selecting, combining and mutating individuals.

	 * 

	 * @param <T>     Type of the fitness measurement

	 * @param builder

	 * @return Enriched EAExecutionContext builder

	 */

	public static <T extends Number & Comparable<T>> Builder<T> enrichForScalarFitness(final Builder<T> builder) {

		Objects.requireNonNull(builder);

		builder.addSelectionPolicyHandlerFactories(

				gsd -> new RouletteWheelSelectionPolicyHandler<T>(gsd.randomGenerator()));

		return builder;

	}

	/**

	 * Create an EAExecutionContext builder based on the knowledge of the fitness function returning a scalar value.

	 * <p>This will enrich it with additional implementations for selecting, combining and mutating individuals.

	 * 

	 * @param <T>

	 * @return

	 */

	public static <T extends Number & Comparable<T>> Builder<T> forScalarFitness() {

		final Builder<T> builder = ImmutableEAExecutionContext.<T>builder();

		return enrichForScalarFitness(builder);

	}

}

Active mutators

• CONDITIONALS_BOUNDARY
• CONSTRUCTOR_CALLS
• EMPTY_RETURNS
• EXPERIMENTAL_ARGUMENT_PROPAGATION
• EXPERIMENTAL_BIG_DECIMAL
• EXPERIMENTAL_BIG_INTEGER
• EXPERIMENTAL_MEMBER_VARIABLE
• EXPERIMENTAL_NAKED_RECEIVER
• EXPERIMENTAL_REMOVE_SWITCH_MUTATOR_[0-99]
• EXPERIMENTAL_SWITCH
• FALSE_RETURNS
• INCREMENTS
• INLINE_CONSTS
• INVERT_NEGS
• MATH
• NEGATE_CONDITIONALS
• NON_VOID_METHOD_CALLS
• NULL_RETURNS
• PRIMITIVE_RETURNS
• REMOVE_CONDITIONALS_EQUAL_ELSE
• REMOVE_CONDITIONALS_EQUAL_IF
• REMOVE_CONDITIONALS_ORDER_ELSE
• REMOVE_CONDITIONALS_ORDER_IF
• REMOVE_INCREMENTS
• TRUE_RETURNS
• VOID_METHOD_CALLS

Tests examined

• net.bmahe.genetics4j.core.replacement.ElitismImplTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.replacement.ElitismImplTest]/[method:ctorNoSurvivorSelector()] (1 ms)
• net.bmahe.genetics4j.core.replacement.ElitismImplTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.replacement.ElitismImplTest]/[method:ctorNoOffspringSelector()] (1 ms)
• net.bmahe.genetics4j.core.replacement.ElitismImplTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.replacement.ElitismImplTest]/[method:ctorNoElitismSpec()] (1 ms)
• net.bmahe.genetics4j.core.selection.TournamentSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.TournamentSelectionPolicyHandlerTest]/[method:selectMaximize()] (2 ms)
• net.bmahe.genetics4j.core.selection.RouletteWheelSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.RouletteWheelSelectionPolicyHandlerTest]/[method:selectMaximizing()] (2 ms)
• net.bmahe.genetics4j.core.replacement.ElitismImplTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.replacement.ElitismImplTest]/[method:simple()] (2 ms)
• net.bmahe.genetics4j.core.selection.RandomSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.RandomSelectionPolicyHandlerTest]/[method:select()] (11 ms)
• net.bmahe.genetics4j.core.selection.TournamentSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.TournamentSelectionPolicyHandlerTest]/[method:selectMinimize()] (2 ms)
• net.bmahe.genetics4j.core.replacement.ElitismImplTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.replacement.ElitismImplTest]/[method:atLeastSpecified()] (3 ms)
• net.bmahe.genetics4j.core.selection.MultiTournamentsSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.MultiTournamentsSelectionPolicyHandlerTest]/[method:selectMaxThenMin()] (3 ms)
• net.bmahe.genetics4j.core.selection.RouletteWheelSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.RouletteWheelSelectionPolicyHandlerTest]/[method:selectMinimizing()] (3 ms)
• net.bmahe.genetics4j.core.evaluation.FitnessEvaluatorVirtualThreadTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.evaluation.FitnessEvaluatorVirtualThreadTest]/[method:testVirtualThreadFactory()] (2 ms)
• net.bmahe.genetics4j.core.selection.ProportionalTournamentSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.ProportionalTournamentSelectionPolicyHandlerTest]/[method:selectMinimize()] (5 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testSystemConstruction()] (2 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testGetterMethods()] (3 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvaluateOnceWithDifferentGenerations()] (3 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvaluateOnce()] (3 ms)
• net.bmahe.genetics4j.core.mutation.SupersimpleTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.mutation.SupersimpleTest]/[method:simple()] (4 ms)
• net.bmahe.genetics4j.core.selection.ProportionalTournamentSelectionPolicyHandlerTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.selection.ProportionalTournamentSelectionPolicyHandlerTest]/[method:selectMaximize()] (83 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvolveWithIntChromosome()] (13 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvolveWithPostEvaluationProcessor()] (22 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvolveWithBitChromosome()] (29 ms)
• net.bmahe.genetics4j.core.EASystemTest.[engine:junit-jupiter]/[class:net.bmahe.genetics4j.core.EASystemTest]/[method:testEvolveWithImmediateTermination()] (591 ms)