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/*******************************************************************************
* Copyright (c) 2010-2018, Zoltan Ujhelyi, IncQuery Labs Ltd.
* 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.matchers.backend;
/**
* A provider interface for {@link IQueryBackendFactory} instances.
* @since 2.0
*/
public interface IQueryBackendFactoryProvider {
/**
* Returns a query backend factory instance. The method should return the same instance in case of repeated calls.
*/
IQueryBackendFactory getFactory();
/**
* Returns whether the given query backend should be considered as system default. If multiple backends are
* registered as system default, it is undefined which one will be chosen.
*/
default boolean isSystemDefaultEngine() {
return false;
}
/**
* Returns whether the given query backend should be considered as system default search backend. If multiple
* backends are registered as system default, it is undefined which one will be chosen.
*/
default boolean isSystemDefaultSearchBackend() {
return false;
}
/**
* Returns whether the given query backend should be considered as system default caching backend. If multiple
* backends are registered as system default, it is undefined which one will be chosen.
*/
default boolean isSystemDefaultCachingBackend() {
return false;
}
}
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