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The core ELK Reasoner package

There is a newer version: 0.29.0

package org.semanticweb.elk.reasoner.saturation;

/*
 * #%L
 * ELK Reasoner
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2016 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.saturation.context.Context;
import org.semanticweb.elk.reasoner.saturation.inferences.ClassInference;

/**
 * A {@link SaturationStateWriter} that does not produce conclusions if the
 * corresponding context does not exist.
 * 
 * @author "Yevgeny Kazakov"
 * 
 * @param 
 *                the type of contexts managed by this
 *                {@link SaturationStateWriter}
 */
public class ContextExistenceCheckingWriter extends
		SaturationStateWriterWrap {

	private final SaturationState state_;

	public ContextExistenceCheckingWriter(
			SaturationStateWriter writer,
			SaturationState state) {
		super(writer);
		this.state_ = state;
	}

	@Override
	public void produce(ClassInference inference) {
		Context context = state_.getContext(inference.getDestination());

		if (context != null) {
			super.produce(inference);
		}
	}

}