org.eclipse.viatra2.gtasm.patternmatcher.impl/src/org/eclipse/viatra2/gtasm/patternmatcher/impl/patternmatcher/internal/algorithms/SearchGraphFactory.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Akos Horvath, Gergely Varro and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Akos Horvath, Gergely Varro - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.algorithms;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.viatra2.core.IModelManager;

/**
 * Used to return the appropriate SearchGraphProvider (uses the alternate representation if available) for the Flattened Pattern.
 * @author Akos Horvath
 *
 */
public class SearchGraphFactory{
	
	private static boolean useAlternate = false;
	private static List<ISearchGraphProvider> alternateProvider = new ArrayList<ISearchGraphProvider>();
	
	public static ISearchGraph getSearchGraph(IModelManager manager){
		
		if( (!useAlternate) || alternateProvider.size() == 0) //use default
			return new VPMBasedSearchGraph(manager);
		else
			return alternateProvider.get(0).getSearchGraph(manager);
	}

	/**
	 * @return the useAlternate
	 */
	public static boolean isUseAlternate() {
		return useAlternate;
	}

	/**
	 * @param useAlternate the useAlternate to set
	 */
	public static void setUseAlternate(boolean useAlternate) {
		SearchGraphFactory.useAlternate = useAlternate;
	}

	/**
	 * @return the alternateProvider
	 */
	public static List<ISearchGraphProvider> getAlternateProvider() {
		return alternateProvider;
	}

	/**
	 * @param alternateProvider the alternateProvider to set
	 */
	public static void setAlternateProvider(
			List<ISearchGraphProvider> alternateProvider) {
		SearchGraphFactory.alternateProvider = alternateProvider;
	}
}