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The core ELK Reasoner package

There is a newer version: 0.29.0

package org.semanticweb.elk.reasoner.completeness;

/*-
 * #%L
 * ELK Reasoner Core
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2020 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.slf4j.Logger;

/**
 * An {@link IncompletenessMonitor} that keeps track of changes in
 * incompleteness status for a given {@link IncompletenessMonitor}. It only
 * reports changes to the completeness of the reasoning task as warnings, i.e.,
 * if the reasoning task was complete but becomes incomplete, or if the
 * reasoning task was incomplete and then becomes complete.
 * 
 * @author Yevgeny Kazakov
 *
 */
public class IncompletenessStatusMonitor
		extends DelegatingIncompletenessMonitor {

	private final String statusMessage_;
	private boolean isIncompletenessDetected_ = false;

	public IncompletenessStatusMonitor(IncompletenessMonitor delegate,
			String statusMessage) {
		super(delegate);
		this.statusMessage_ = statusMessage;
	}

	@Override
	public boolean isStatusChanged(Logger logger) {
		return logger.isWarnEnabled()
				&& (isIncompletenessDetected_ != isIncompletenessDetected()
						|| super.isStatusChanged(logger));
	}

	@Override
	public void logStatus(Logger logger) {
		if (!logger.isWarnEnabled()) {
			return;
		}
		boolean isIncompletenessDetected = isIncompletenessDetected();
		if (isIncompletenessDetected_ == isIncompletenessDetected
				&& !super.isStatusChanged(logger)) {
			return;
		}
		isIncompletenessDetected_ = isIncompletenessDetected;
		if (isIncompletenessDetected_) {
			logger.warn(statusMessage_);
		} else {
			logger.warn("[Fixed] " + statusMessage_);
		}
		super.logStatus(logger);
	}

}