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/*******************************************************************************
* Copyright (c) 2010-2014, Bergmann Gabor, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.api.scope;
import tools.refinery.viatra.runtime.api.IQuerySpecification;
import tools.refinery.viatra.runtime.api.ViatraQueryEngine;
import tools.refinery.viatra.runtime.internal.apiimpl.EngineContextFactory;
/**
* Defines a scope for a VIATRA Query engine, which determines the set of model elements that query evaluation operates on.
*
* @author Bergmann Gabor
*
*/
public abstract class QueryScope extends EngineContextFactory {
/**
* Determines whether a query engine initialized on this scope can evaluate queries formulated against the given scope type.
* <p> Every query scope class is compatible with a query engine initialized on a scope of the same class or a subclass.
* @param queryScopeClass the scope class returned by invoking {@link IQuerySpecification#getPreferredScopeClass()} on a query specification
* @return true if an {@link ViatraQueryEngine} initialized on this scope can consume an {@link IQuerySpecification}
*/
public boolean isCompatibleWithQueryScope(Class<? extends QueryScope> queryScopeClass) {
return queryScopeClass.isAssignableFrom(this.getClass());
}
}
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