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The core ELK Reasoner package

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/**
 * 
 */
package org.semanticweb.elk.reasoner.saturation.rules;

import org.semanticweb.elk.reasoner.saturation.context.ContextPremises;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/*
 * #%L
 * ELK Reasoner
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2012 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%
 */

/**
 * A {@link RuleVisitor} which simply applies the rules that it visits to the
 * given arguments.
 * 
 * @see Rule#apply(Object, ContextPremises, ClassInferenceProducer)
 * 
 * @author Pavel Klinov
 * 
 *         [email protected]
 * @author "Yevgeny Kazakov"
 */
public class BasicRuleVisitor extends DummyRuleVisitor {

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

	@Override
	protected  Void defaultVisit(Rule rule, P premise,
			ContextPremises premises, ClassInferenceProducer producer) {
		if (LOGGER_.isTraceEnabled()) {
			LOGGER_.trace("{}: process {} by {}", premises, premise, rule);
		}
		rule.apply(premise, premises, producer);
		return null;
	}

}