org.semanticweb.elk.reasoner.indexing.model.IndexedContextRoot Maven / Gradle / Ivy
package org.semanticweb.elk.reasoner.indexing.model;
import org.semanticweb.elk.owl.interfaces.ElkClassExpression;
/*
* #%L
* ELK Reasoner
* $Id:$
* $HeadURL:$
* %%
* Copyright (C) 2011 - 2015 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.ExtendedContext;
/**
* An {@link IndexedObject} that can be used in special "root" positions of
* other {@link IndexedObject}s. It corresponds to a {@link ElkClassExpression}.
*
* @author Yevgeny Kazakov
*
*/
public interface IndexedContextRoot extends IndexedObject {
/**
* @return The corresponding context or {@code null} if none was assigned.
*/
ExtendedContext getContext();
/**
* Resets the corresponding context to {@code null}.
*/
void resetContext();
/**
* Assign the given {@link ExtendedContext} to this {@link IndexedObject} if
* none was yet assigned.
*
* @param context
* the {@link ExtendedContext} which will be assigned to this
* {@link IndexedObject}
*
* @return the previously assigned {@link ExtendedContext} or {@code null}
* if none was assigned (in which case the new
* {@link ExtendedContext} will be assigned)
*/
ExtendedContext setContextIfAbsent(ExtendedContext context);
/**
* The visitor pattern for instances
*
* @author Yevgeny Kazakov
*
* @param
* the type of the output
*/
interface Visitor
extends
IndexedClassExpression.Visitor,
IndexedRangeFiller.Visitor {
// combined interface
}
O accept(IndexedContextRoot.Visitor visitor);
}