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The core ELK Reasoner package
There is a newer version: 0.29.0
package org.semanticweb.elk.reasoner.saturation.rules;

/*-
 * #%L
 * ELK Reasoner Core
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2024 Department of Computer Science, University of Oxford
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import org.semanticweb.elk.reasoner.indexing.model.IndexedClassExpression;
import org.semanticweb.elk.reasoner.indexing.model.IndexedDefinedClass;
import org.semanticweb.elk.reasoner.indexing.model.IndexedObjectComplementOf;
import org.semanticweb.elk.reasoner.indexing.model.IndexedObjectHasSelf;
import org.semanticweb.elk.reasoner.indexing.model.IndexedObjectIntersectionOf;
import org.semanticweb.elk.reasoner.indexing.model.IndexedObjectSomeValuesFrom;
import org.semanticweb.elk.reasoner.indexing.model.IndexedPredefinedClass;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.BackwardLink;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.ClassInconsistency;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.ContextInitialization;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.DisjointSubsumer;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.ForwardLink;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.Propagation;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.SubContextInitialization;
import org.semanticweb.elk.reasoner.saturation.context.ContextPremises;
import org.semanticweb.elk.reasoner.saturation.rules.backwardlinks.BackwardLinkChainFromBackwardLinkRule;
import org.semanticweb.elk.reasoner.saturation.rules.backwardlinks.ContradictionOverBackwardLinkRule;
import org.semanticweb.elk.reasoner.saturation.rules.backwardlinks.SubsumerBackwardLinkRule;
import org.semanticweb.elk.reasoner.saturation.rules.contextinit.OwlThingContextInitRule;
import org.semanticweb.elk.reasoner.saturation.rules.contextinit.RootContextInitializationRule;
import org.semanticweb.elk.reasoner.saturation.rules.contradiction.ContradictionPropagationRule;
import org.semanticweb.elk.reasoner.saturation.rules.disjointsubsumer.ContradictionCompositionRule;
import org.semanticweb.elk.reasoner.saturation.rules.forwardlink.BackwardLinkFromForwardLinkRule;
import org.semanticweb.elk.reasoner.saturation.rules.forwardlink.NonReflexiveBackwardLinkCompositionRule;
import org.semanticweb.elk.reasoner.saturation.rules.forwardlink.ReflexiveBackwardLinkCompositionRule;
import org.semanticweb.elk.reasoner.saturation.rules.propagations.SubsumerPropagationRule;
import org.semanticweb.elk.reasoner.saturation.rules.subcontextinit.PropagationInitializationRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ComposedFromDecomposedSubsumerRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ContradictionFromNegationRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ContradictionFromOwlNothingRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.DisjointSubsumerFromMemberRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.EquivalentClassFirstFromSecondRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.EquivalentClassSecondFromFirstRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedClassDecompositionRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedClassFromDefinitionRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedObjectComplementOfDecomposition;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedObjectHasSelfDecomposition;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedObjectIntersectionOfDecomposition;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.IndexedObjectSomeValuesFromDecomposition;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ObjectIntersectionFromFirstConjunctRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ObjectIntersectionFromSecondConjunctRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.ObjectUnionFromDisjunctRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.OwlNothingDecompositionRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.PropagationFromExistentialFillerRule;
import org.semanticweb.elk.reasoner.saturation.rules.subsumers.SuperClassFromSubClassRule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A {@link RuleVisitor} that always returns {@code null} and prints that the
 * rules are ignored to the logger.
 * 
 * @author "Yevgeny Kazakov"
 * 
 * @param 
 *            the type of output parameter with which this visitor works
 */
public class DummyRuleVisitor implements RuleVisitor {

	// logger for events
	private static final Logger LOGGER_ = LoggerFactory
			.getLogger(DummyRuleVisitor.class);

	/**
	 * The default implementation of all methods
	 * 
	 * @param 
	 *            the type of premises to which the rule can be applied
	 * @param rule
	 *            the {@link Rule} to be applied
	 * @param premise
	 *            the main premise to which the rule is applied
	 * @param premises
	 *            other premises to which the rule is applied
	 * @param producer
	 *            the {@link ClassInferenceProducer} using which the inferences
	 *            produced by this rule application are handled
	 * @return the output of the visitor
	 */
	protected 
 O defaultVisit(Rule rule, P premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		if (LOGGER_.isTraceEnabled()) {
			LOGGER_.trace("ignore {} by {} in {}", premise, rule, premises);
		}
		return null;
	}

	@Override
	public O visit(BackwardLinkChainFromBackwardLinkRule rule,
			BackwardLink premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(BackwardLinkFromForwardLinkRule rule, ForwardLink premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ComposedFromDecomposedSubsumerRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ContradictionCompositionRule rule, DisjointSubsumer premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);

	}

	@Override
	public O visit(ContradictionFromNegationRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ContradictionFromOwlNothingRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ContradictionOverBackwardLinkRule rule, BackwardLink premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ContradictionPropagationRule rule,
			ClassInconsistency premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);

	}

	@Override
	public O visit(DisjointSubsumerFromMemberRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(EquivalentClassFirstFromSecondRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(EquivalentClassSecondFromFirstRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedClassDecompositionRule rule,
			IndexedDefinedClass premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedClassFromDefinitionRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedObjectComplementOfDecomposition rule,
			IndexedObjectComplementOf premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedObjectHasSelfDecomposition rule,
			IndexedObjectHasSelf premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedObjectIntersectionOfDecomposition rule,
			IndexedObjectIntersectionOf premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(IndexedObjectSomeValuesFromDecomposition rule,
			IndexedObjectSomeValuesFrom premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(NonReflexiveBackwardLinkCompositionRule rule,
			ForwardLink premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ObjectIntersectionFromFirstConjunctRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ObjectIntersectionFromSecondConjunctRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ObjectUnionFromDisjunctRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(OwlNothingDecompositionRule rule,
			IndexedPredefinedClass premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(OwlThingContextInitRule rule, ContextInitialization premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(PropagationFromExistentialFillerRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(PropagationInitializationRule rule,
			SubContextInitialization premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(ReflexiveBackwardLinkCompositionRule rule,
			ForwardLink premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);

	}

	@Override
	public O visit(RootContextInitializationRule rule,
			ContextInitialization premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(SubsumerBackwardLinkRule rule, BackwardLink premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(SubsumerPropagationRule rule, Propagation premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

	@Override
	public O visit(SuperClassFromSubClassRule rule,
			IndexedClassExpression premise, ContextPremises premises,
			ClassInferenceProducer producer) {
		return defaultVisit(rule, premise, premises, producer);
	}

}